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Robot Submarine Maps World's Deepest Sinkhole

holy_calamity writes "The world's deepest water-filled sinkhole has finally been mapped — by a robotic submarine whose descendants may one day swim on one of Jupiter's moons. The last attempt to find the bottom resulted in the SCUBA diving depth record and the death of a diving legend. The sub's sonar found that the divers had descended to only about 10m from the floor. The sub's mapping also indicated that the sinkhole, which is over 300m deep, could connect to even deeper caves."

123 comments

  1. Mel's Hole? by WED+Fan · · Score: 4, Funny
    --
    Politics is the art of looking for trouble, finding it everywhere, diagnosing it incorrectly and applying the wrong fix.
    1. Re:Mel's Hole? by ricree · · Score: 5, Insightful

      I know that wikipedia isn't exactly the world's most reliable source, but why in the heck hasn't that article been deleted yet.

    2. Re:Mel's Hole? by bobo+mahoney · · Score: 1

      if the info about Mel's Hole in wikipedia is true and this is Mel's hole who would have gone down into that thing? The article says some one went in with just SCUBA gear. That is nasty.

      --
      Bobo Mahoney
    3. Re:Mel's Hole? by WED+Fan · · Score: 3, Insightful

      Are you kidding? Art Bell would descend with his minions claiming "Government Cover-Up" if they deleted it.

      --
      Politics is the art of looking for trouble, finding it everywhere, diagnosing it incorrectly and applying the wrong fix.
    4. Re:Mel's Hole? by Babbster · · Score: 2, Insightful

      Why would it be deleted?

      A) It's hilarious.
      2) It's a recounting of the guy's tall tales and doesn't seem to allege the truth of the stories. It's thus as valid as many other entries that discuss fables, comic books, etc.
      #) It's hilarious. The story of the alternate-universe dimes is reason enough to keep the article in perpetuity!

    5. Re:Mel's Hole? by WED+Fan · · Score: 1

      Sorry, Bobo, but I know its late, but if you RTFA, you'll realize...

      Well...

      --
      Politics is the art of looking for trouble, finding it everywhere, diagnosing it incorrectly and applying the wrong fix.
    6. Re:Mel's Hole? by Skevin · · Score: 4, Funny

      The goatse guy is named Mel? You learn something new every day.

      Solomon

      --
      "Twice half-assed makes an ass whole." --Solomon K. Chang
    7. Re:Mel's Hole? by Whiney+Mac+Fanboy · · Score: 5, Insightful

      I know that wikipedia isn't exactly the world's most reliable source, but why in the heck hasn't that article been deleted yet.

      For the same reason that articles on Leprechauns or the Piltdown Man aren't deleted. So someone can go & read about them, find out they're not real things, and the read the story of how the hoax/myth/whatever was perpetutated.

      --
      There are shills on slashdot. Apparently, I'm one of them.
    8. Re:Mel's Hole? by mrchaotica · · Score: 1

      That's true, but the introductory sentences have the wrong tone. I'm not sure how exactly to fix it, but it sounds too much like something out of Uncyclopedia (or maybe the Onion).

      --

      "[Regarding the 'cloud,'] ownership was what made America different than Russia." -- Woz

    9. Re:Mel's Hole? by Anonymous Coward · · Score: 0

      However, they did delete the "Electric Universe" article, though I suppose that's because it too strongly attempted to present its information as fact (when it is, in reality, nothing but nonsense). It's a bit of a shame, actually - I've only seen some of the nonsense of those theories, and I'm curious (similar to the way a biologist examines organisms under a microscope) how those people think and how they managed to come up with such a contrivance in the first place.

    10. Re:Mel's Hole? by evilviper · · Score: 2, Insightful

      someone can go & read about them, find out they're not real things, and the read the story of how the hoax/myth/whatever was perpetutated.

      The gaping hole in that theory, is that the Mel's Hole article doesn't bother to corroborate or contradict any of the evidence offered, even though much of it would be trivially easy to track down... Large checks and non-profits don't just appear and disappear without a paper trail. Not to mention travel records, alibis, etc., etc.

      The Piltdown Man article specifically says it was fake, and disproven. No such luck statement for Mel's Hole. And the "DISPUTED" tag at the top of Mel's Hole doesn't exactly lend credence to your claim, either.
      --
      Slashdot gets worse every day... Pipedot: News for nerds, without the corporate slant
    11. Re:Mel's Hole? by pudro · · Score: 2, Interesting

      You can't find that out from Wikipedia, because the gravity-based cosmologists there are deathly afraid of people supporting plasma cosmology (which still does have a Wikipedia page). Even if new info is presented as what plasma cosmologists believe but everyone else has moved beyond, it gets immediately cut out. It's like a medical doctor gutting the page on bloodletting, because he disagreed with the practice. No crap, you disagree with it. That doesn't mean nobody should know what it's about. The fact that the Hollow Earth theory has a bigger page than plasma cosmology says a lot about what those idiots are doing to the page (and I say "idiots" NOT because I think gravity-based cosmologists have anything wrong with their own theory - it's just the ones at Wikipedia who feel the need to suppress information).

      --
      Freedom is assumed. Then they try to take it away. The degree to which you resist is the degree to which you are free.
    12. Re:Mel's Hole? by master_p · · Score: 1

      But the article is stubbed as disputed. I do not think it should be deleted, as it is a great artifact of human stupidity.

    13. Re:Mel's Hole? by Anonymous Coward · · Score: 0

      Don't forget the Timecube...

      http://en.wikipedia.org/wiki/Timecube

    14. Re:Mel's Hole? by Anonymous Coward · · Score: 0

      Because it stands as a testament to the utter gullibility of Art Bell for believing it and his willingness to perpetuate myth-presented-as-fact on his radio show.

    15. Re:Mel's Hole? by Wookietim · · Score: 1

      That's hilarious - some guy pops up and claims to have found a magic hole and people believe him.... Hey everybody, I have found a magic speed bump. I'm not gonna tell you where it is, or show you pictures of it, but if you drive over it, you will be able to raise the dead!

      --
      http://timcol6.freehostia.com/
    16. Re:Mel's Hole? by tzanger · · Score: 1

      Hey everybody, I have found a magic speed bump. I'm not gonna tell you where it is, or show you pictures of it, but if you drive over it, you will be able to raise the dead!

      I bet if you drive over any speed bump fast enough, the dead will at least jump...

    17. Re:Mel's Hole? by Wookietim · · Score: 1

      On a different note - this sounds like what "The Simpsons" was referring to with "The Mystery Spot" in the episode about the baseball ringers coming to play for Burns power plant... I guess we should all be thankful for this Mel guy that he at least provided fodder for a good TV show...

      --
      http://timcol6.freehostia.com/
    18. Re:Mel's Hole? by Anonymous Coward · · Score: 1, Insightful

      Most people would be able to figure things out when they got to this, the second sentence: "Despite extensive efforts, the hole has never been located by anyone else, and none of Mel's claims about it have ever been confirmed." But then again, such alarm bells might not ring for the average slashdotter...

    19. Re:Mel's Hole? by Anonymous Coward · · Score: 0

      Hmm. Your ideas are intriguing to me and I wish to subscribe to your newsletter.

    20. Re:Mel's Hole? by Jesus_666 · · Score: 1

      I just went from Mel's Hole to Charles Manson to Helter Skelter to Arthur Brown to Alice Cooper to Alice Cooper in Popular Culture. Once again I thank Wikipedia for enabling me to waste my time following a bizarre series of encyclopedia entries.

      --
      USE HOT GRITS WITH STATUE OF NATALIE PORTMAN (NAKED AND PETRIFIED)
    21. Re:Mel's Hole? by Anonymous Coward · · Score: 1, Insightful

      It's nominated for deletion and most of the votes are Deletes. So pretty soon, people looking for information on the subject - maybe people reading through an archive of this discussion - won't find anything on Wikipedia.

      Wikipedia's policies on deleting information are ridiculous and stupid. Notability filtering has no place on an online encyclopedia. After the barrage of negative mainstream press articles a few years ago, they really sold out. I guess they just want to be the online equivalent of a paper encyclopedia now, medium be damned.

    22. Re:Mel's Hole? by cthulhu11 · · Score: 0

      Ah, you've met Red Elk too? "I was misquoted. There *are* lizard people inside the earth who kidnap humans to use as sex slaves, but they aren't *giant* lizard people".

  2. its descendants? by Anonymous Coward · · Score: 3, Funny

    > robotic submarine whose descendants may one day swim on one of Jupiter's moons

    Wow, robot submarine sex! I wonder if it has the hots for one of those mars rovers...

    1. Re:its descendants? by Anonymous Coward · · Score: 0

      They can't have offspring before they laugh five times

    2. Re:its descendants? by Puff+of+Logic · · Score: 1

      Wow, robot submarine sex! I wonder if it has the hots for one of those mars rovers... More importantly, does it have a robe and wizard hat?
      --
      P.P.S. I'm doing Science and I'm still alive.
  3. It's Jules Verne! by able1234au · · Score: 3, Funny

    > The sub's mapping also indicated that the sinkhole, which is over 300m deep, could connect to even deeper caves.

    So begins the journey to the centre of the earth

    1. Re:It's Jules Verne! by GregPK · · Score: 0, Redundant

      Hmmm. I wonder if I can get spare parts for it at http://www.westmarine.com/ :)

    2. Re:It's Jules Verne! by TallPeter · · Score: 1

      How low can you go?

  4. Spare parts!!! by GregPK · · Score: 0, Redundant

    I wonder if I can get spare parts for it at my local West Marine store. ;) http://www.westmarine.com/

    1. Re:Spare parts!!! by Anonymous Coward · · Score: 0

      you're an idiot

  5. Deep Diving Risks by wildsurf · · Score: 5, Interesting

    This reminds me of the amazing (and sobering) story of Dave Shaw, who perished in a deep freshwater cavern trying to recover the body of a fellow diver. Quite a read, if you have 20 minutes.

    --
    Weeks of coding saves hours of planning.
    1. Re:Deep Diving Risks by Anonymous Coward · · Score: 0

      Thank god. For an article that pointed to that situation, i was getting saddened by the lack of posts containing content beyond "Lol Sinkhole".

    2. Re:Deep Diving Risks by Joaz+Banbeck · · Score: 5, Insightful

      Quite a sad tale as I recall. Shows the dangers of nitrogen narcosis. Makes your judgement horrible.

      Shaw made one serious mistake: he had a plan, and when something went wrong - the corpse's head came off - he tried to modify the plan at 800+ ft below, instead of going up to safety and making a new plan. ( Can't say I would have done better, though )

    3. Re:Deep Diving Risks by flyingsquid · · Score: 4, Insightful
      Personally, I think the bigger mistake was first putting himself in a situation where even the slightest misstep could result in death. He pushed his luck, and his luck ran out. Outside Magazine just loves this kind of death-by-adventure story. There was the one about the kid who went into the backwoods of Alaska to live off the land and starved to death, and there was the one about all the people who died in a storm on Everest (both appeared first in the magazine and were later written up as Into The Wild and Into Thin Air, respectively, both by Jon Krakauer).

      But I have a hard time crying too much about those stories where someone takes a lot of risks and then dies. Either you're incompetent and in over your head, in which case you deserve whatever you get. Or, you know the risks but take them anyway, figuring a potentially short, but adventure-filled life is better than a long, boring, risk-averse one, in which case you knew exactly what you were getting into, so you can't complain too much. Still, they do make for great reading.

    4. Re:Deep Diving Risks by myth_of_sisyphus · · Score: 1

      That was an incredible and disturbing story. I was actually holding my breath waiting for the last pages to load.

      Extreme cave diving is not altogether sane i think.

    5. Re:Deep Diving Risks by Comatose51 · · Score: 5, Insightful

      I'm not sure if people like him needs anyone to feel sorry for or to even pass any judgment on him. From the article, his friends certainly didn't. They accepted the fact and that was it. He accepted the risks and knew that there's always an element of chance. His luck ran out and he's dead. There's a great deal of stoicism that I admire in people like that. If all of us waited until all the conditions were 100% right, nothing amazing will ever be achieved.

      --
      EvilCON - Made Famous by /.
    6. Re:Deep Diving Risks by Comatose51 · · Score: 1

      Thanks a lot for the article. Incredible, sad, yet still good in a way. Like his friend, I can't feel sorry for him. That's just the risk he accepted. In the end, he got the job done, which brings the whole story to a good ending.

      --
      EvilCON - Made Famous by /.
    7. Re:Deep Diving Risks by Prune · · Score: 1

      Mod parent "+1, He Gets It"

      --
      "Politicians and diapers must be changed often, and for the same reason."
    8. Re:Deep Diving Risks by CmdrGravy · · Score: 1

      Exactly, it's his own fault he's dead but he knew that might be the case when he set off and so did the other divers.

      He wanted the rewards of successfully recovering a body from that depth more than he worried about dying in the attempt and that's a perfectly rational judgement, it is people like this who push boundaries and it's good that they do.

    9. Re:Deep Diving Risks by argStyopa · · Score: 1

      "If all of us waited until all the conditions were 100% right, nothing amazing will ever be achieved."

      Or we'd work for NASA. And yes.

      --
      -Styopa
    10. Re:Deep Diving Risks by 4D6963 · · Score: 1

      As I understood it, it wasn't the head coming off the problem, it was the body being loose instead of stuck, making it hard to put in the bag.

      Anyways, that story was creepy.

      --
      You just got troll'd!
    11. Re:Deep Diving Risks by Viol8 · · Score: 1

      "nothing amazing will ever be achieved"

      True , but whats that got to do with deep diving? Its not amazing , just pointless and boring.

    12. Re:Deep Diving Risks by element-o.p. · · Score: 1

      You are right, but how boring would the world be if no one ever pushed boundaries?

      I'm a rock climber, kayaker and pilot. I like to push boundaries, but I try to do it with a realistic assessment of my skills and with planning for an out if things should go wrong. Personally, I find that life is much more enjoyable and fulfilling when you challenge yourself.

      --
      MCSE? No, sir...I don't do Windows. Yes, I am an idealist. What's your point?
    13. Re:Deep Diving Risks by Fizzl · · Score: 1

      Very captivating story. I just don't like the way they had to have a "bad guy" in the story and thus the documentary maker was painted as such.

    14. Re:Deep Diving Risks by Anonymous Coward · · Score: 0

      I totally know what you mean!

      I mean, I'm a farking wild man, my friends say.

      For example, once I tried to solo Hogger when I was only level 8. That was a rush!

    15. Re:Deep Diving Risks by Joaz+Banbeck · · Score: 1

      Now that you mention it, that was the underlying problem; I just remember the head because a goulish friend of mine made a crack about 'keeping your head about you while diving'.

    16. Re:Deep Diving Risks by David+Gould · · Score: 1

      My Kingdom for a Mod point! Ah, but then I'd have to choose between "funny" and "insightful", when it deserves both. Oh, well.

      --
      David Gould
      main(i){putchar(340056100>>(i-1)*5&31|!!(i<6)<< 6)&&main(++i);}
  6. The Duke Nuke'm Forever Development Budget? by CrtxReavr · · Score: 0

    It must me.

    --
    "So is the BSD licence even more 'free' (than GPLv2)? Yes. Unquestionably." --Linus Torvalds (TinyURL.com/2vugzl)
    1. Re:The Duke Nuke'm Forever Development Budget? by Anonymous Coward · · Score: 0

      Not exactly. One is a sink hole the other is a money pit.

  7. Wow, remotely operated by Anonymous Coward · · Score: 0

    From the article:
    The robotic probe is operated by a team of geologists from the University of Texas
    and then this one:
    Miles Pebody, who builds and operates autonomous underwater vehicles for oceanographic research at Southampton University, UK

    So are they actually operating this thing from Texas? The article is not clear on that. Really though, are they in Texas operating it? The article also references a Jupiter mission which I assume will be remotely operated so controlling it from Texas while it is in Mexico should be possible.

  8. Holy shit, that is deep.... by (H)elix1 · · Score: 4, Informative

    Wow. Just wow. This guy was trying for a 1000' dive? This guy did a 400' dive on air? Just as a few notes. With the PADI (recreational) diving, you can hit about 90' before you have to start dealing with decompression. 130' and you start hitting nitrogen narcosis as O2 gets toxic as the pressure increases. I've got buddies who are crazy enough to hang tanks and do 160' on air, and even they both admit that one was feeling a bit drunk/stupid from air and had been rescued by their buddy. After the third time, they gave up on the deep O2 dives.

    1. Re:Holy shit, that is deep.... by Fuji+Kitakyusho · · Score: 5, Interesting

      Crazy. I've done ~380 fsw on trimix, with four different decompression gases, and it was a logistical headache. I know that one team has done the Edmund Fitzgerald on SCUBA, but at those depths the logistical issues, risks and costs escalate to the point that you have to wonder what you are gaining over surface supported surface supply or saturation diving - a much safer option than SCUBA. Stunts like the one Sheck pulled, or those by Jim Bowden, etc., are nothing more than showboating for the sake of setting records. Problem is, the record you set might not be the one you were shooting for. (Most preventable death award goes to...)

      With trimix being so accessable now, it doesn't make any sense to me why anyone would continue to endanger themselves by doing deep dives on air. Actually, considering the widespread availability of nitrox, using air for any diving whatsoever doesn't really make sense anymore. I don't.

      As for 1000' deep sinkholes, using a ROV is probably the right idea.

    2. Re:Holy shit, that is deep.... by QuantumG · · Score: 3, Interesting

      Wonder if we'll ever have nanotech suits that make diving as safe as a submarine (or, hopefully, safer).

      Then I guess you'll have divers who wish for the good old days when you had to have skill to dive.

      A similar technology for space suits is probably a lot easier though. Only a single atmosphere of pressure, and a near vacuum environment.

      --
      How we know is more important than what we know.
    3. Re:Holy shit, that is deep.... by Bios_Hakr · · Score: 1

      The reason you deal with decompression sickness is that you breathe in air at 90' and the ascend. As you go up, the compressed air starts decompressing and filling up volume. In your joints, that causes the bends. In your lungs, it will cause a lot of pain.

      If, however, you take a normal breath at the surface, descend 90', and then ascend, the air will not expand and cause problems.

      I've heard that free divers' lungs will crush to the size of a baseball or smaller at depth.

      --
      I'd rather you do it wrong, than for me to have to do it at all.
    4. Re:Holy shit, that is deep.... by sydsavage · · Score: 1

      I'd like to hear more about diving the Fitzy, if you care to expound...

    5. Re:Holy shit, that is deep.... by PeeAitchPee · · Score: 2, Interesting

      Exley was a pioneer. He literally wrote the book on cave diving and was the first person in the world to log over 1,000 cave dives. Slashdotters may also be interested to know that he was a North Florida math teacher who wrote his own software ("Dr. X") to help calculate gas mixes etc. during deep dives into the many caves which are part of the Florida Aquifer system. I submitted a story a few years ago on the tenth anniversary of his death but it was rejected -- glad to see he's finally being mentioned here.

    6. Re:Holy shit, that is deep.... by Usquebaugh · · Score: 1

      No but you have another problem.

      As you descend the air is forced into your blood stream under pressure. And you have all this extra oxygen, which you use. As you ascend the air is withdrawn and you can end up with less oxygen than you need. Not good, it's why a lot of free divers black out on the ascent.

    7. Re:Holy shit, that is deep.... by devonbowen · · Score: 1

      I think you're confusing the bends with an embolism.

      When you breathe at the surface and descend to 90', the air in your lungs will still be under 90' of water pressure (plus atmospheric pressure on top of that). Just like the air you would breathe from a tank at that depth. There will be less volume in your lungs but the pressure is the same and it will still be driven into (absorbed by) your tissues. When you ascend, bubbles will form in your tissues and cause the bends. People breathing from the surface don't often get bent because they spend little time at depth - not because they breathed surface air. A 90' depth dive requires more than 10 minutes to be a significant bends danger (from memory and it depends on the model, ascent rate, etc). But there are cases of breath-holding divers with the bends.

      An embolism is when you breathe at depth and then come up with full lungs. As you ascend, the air expands to the point where your lungs can't hold it anymore and your lungs burst. The air then leaks into your chest cavity, your lungs can deflate, and bubbles can reach your brain. Nasty stuff.

      Devon

    8. Re:Holy shit, that is deep.... by Anonymous Coward · · Score: 0

      > I know that one team has done the Edmund Fitzgerald on SCUBA, but at those depths the logistical issues, risks and costs escalate

      For others' reference, the Fitzgerald is at 535 feet.

    9. Re:Holy shit, that is deep.... by swillden · · Score: 1

      A few minor corrections

      Just as a few notes. With the PADI (recreational) diving, you can hit about 90' before you have to start dealing with decompression.

      According to the PADI tables, you can spend 10 minutes at 140 feet before you're into decompression. At 90 feet you can stay for 30 minutes. The US Navy tables differ in some respects but agree on these limits.

      130' and you start hitting nitrogen narcosis as O2 gets toxic as the pressure increases.

      Narcosis actually begins to hit quite a bit shallower than 130. Most people notice mild symptoms by 80 feet, once they know what to look for. Oxygen toxicity depends on time as well as depth. At 130 feet (five atmospheres), ppO2 is about 1 atmosphere, which is safe for several hours. At 220 feet on air, a ppO2 of 1.6, you have 45 minutes before you're into the danger zone. So oxtox isn't really an issue until you get significantly deeper.

      I've got buddies who are crazy enough to hang tanks and do 160' on air, and even they both admit that one was feeling a bit drunk/stupid from air and had been rescued by their buddy.

      I've been that deep (160) a couple of times on air, and I have a buddy who regularly does 240. Those depths aren't inherently dangerous, for short periods of time, but there is a very significant risk that you'll make bad decisions due to the narcosis. In my buddy's case, he's logged over 2000 dives in 30 years, and with that much experience the right decisions are reflexive, even when he's mostly out of it. With just over 150 dives, I turn back as soon as I feel I'm getting significantly impaired. Going to 300+ on air, you start to risk the narcosis knocking you out, and it doesn't matter how experienced you are when you're unconscious.

      I'll be the first to admit that deep diving on air is exhilarating, but I don't recommend it. I plan on getting trimix-certified soon, so I can go deeper safely.

      Of course, these guys doing 500+ feet aren't diving on air. Dave Shaw was diving a rebreather that automatically adjusts your gax mixture, reducing the O2 automatically as depths increase to avoid toxicity, and replacing much of the N2 in air with He, to reduce narcosis and ongassing of N2. Still, at 28 atmospheres, it doesn't take much nitrogen to induce narcosis, and using helium just means that you have two inert gasses to offgas in a controlled manner to avoid getting bent. Ideally, it would be good to mix in even more gases, to further reduce the partial pressures of each, but there aren't any other gases to use. Argon is inert, but it and all of the heavier noble gases are too heavy, which means they get too "thick" to breathe easily under high pressure.

      The current world record depths (a little over 1000 feet) are probably pretty close to the limit of what even an exceptional human body can handle, and there's not much more that equipment can do to address the issues.

      --
      Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
    10. Re:Holy shit, that is deep.... by Java+Ape · · Score: 1

      Great comment -- always nice to hear from someone who knows what they're talking about. I used to dive a lot, but scared myself one too many times (I narc way too easily, and I don't like being stupid). I'm strictly a shallow-water dabbler now.

    11. Re:Holy shit, that is deep.... by radtea · · Score: 1

      130' and you start hitting nitrogen narcosis as O2 gets toxic as the pressure increases.

      Nitrogen narcosis and oxygen toxicity are completely unrelated and quite separate phenomenon

      Nitrogen narcosis makes you stupid due to the effects of a high partial pressure of INERT nitrogen on nerves, probably specifically on synapses. In my experience you reason so slowly when narc'd that you may as well not be able to reason at all, although the effects differ depending on circumstances and the individual involved.

      Oxygen toxicity is due to the extreme REACTIVITY of O2 at high partial pressure, and it results in various physiological failure modes that are not specifically related to nervous tissue.

      --
      Blasphemy is a human right. Blasphemophobia kills.
    12. Re:Holy shit, that is deep.... by swillden · · Score: 1

      Wonder if we'll ever have nanotech suits that make diving as safe as a submarine (or, hopefully, safer).

      I'm trying to imagine how nanotech would help with diving, and not coming up with much. Are you thinking that somehow a nanotech suit could be strong enough to withstand the incredible pressures, yet still be flexible?

      A similar technology for space suits is probably a lot easier though. Only a single atmosphere of pressure, and a near vacuum environment.

      Yes, space is a much human-friendlier environment than a few hundred feet of water. Harder to reach, but easier to stay alive in.

      --
      Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
    13. Re:Holy shit, that is deep.... by Bishop · · Score: 1

      The advantages of trimix are not so clear cut. Insuring that the gas is blended properly with the correct mix of gases is a problem. The risks of diving on air can be managed. I know a number of very good experienced divers who only use air as the risks are well known.

    14. Re:Holy shit, that is deep.... by Fuji+Kitakyusho · · Score: 1

      At the risk of taking this thread way off on a tangent, ensuring that gas is properly mixed is not really a problem - it just requires a bit of diligence to do properly - i.e. patience, thorough analysis, and willingness to dump the gas at considerable expense and start over if you screw up. Yes, the risks of diving air are well known and can be managed. Specifically: For deep dives: 1) Risk of narcosis - managed by replacing nitrogen with helium. (i.e. using trimix) 2) Risk of oxygen toxicity - managed by replacing oxygen with an inert gas such as helium (i.e. using trimix) 3) Risk of elevated work of breathing and associated CO2 buildup due to gas density - managed by replacing nitrogen with a less dense gas such as helium (i.e. using trimix) For shallow dives: 4) Risk of incurring a decompression obligation greater than the bottom time necessitates due to an inert gas fraction that is greater than necessary given the oxygen partial pressure at the depth in question - managed by replacing some of the inert gas with oxygen (i.e. using hyperoxic trimix or nitrox) Seems pretty clear cut to me.

    15. Re:Holy shit, that is deep.... by zippthorne · · Score: 2, Interesting

      We already have centitech suits that make diving as safe as a submarine. Actually probably a bit safer, considering they're rated for over three times the depth of a typical submarine. Not quite as fun though, since it's more like diving in your own personal submarine.

      --
      Can you be Even More Awesome?!
    16. Re:Holy shit, that is deep.... by QuantumG · · Score: 1

      Yeah.. they're just as lame as existing space suits (if not more).. a magical nanotech suit would be completely transparent and so you feel like you're swimming in shallow water.

      --
      How we know is more important than what we know.
    17. Re:Holy shit, that is deep.... by zippthorne · · Score: 1

      I think you'll find it difficult to obtain the phoenix feathers and unicorn horn required for the manufacture of those manabots.

      --
      Can you be Even More Awesome?!
  9. Deep Diving Risks-Metal Fatigue. by Anonymous Coward · · Score: 0

    Rule number one: never send a man to do a robot's job.

  10. Those bastards by SuperKendall · · Score: 4, Funny

    I can understand the "man" taking Mel's hole away from him, possibly to store with the Ark in that large warehouse.

    But shutting down his wombat-rescue operation? That's just plain mean.

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
    1. Re:Those bastards by MichaelSmith · · Score: 1

      But shutting down his wombat-rescue operation? That's just plain mean.

      Perhaps his hole was a giant wombat hole. I for one wouldn't want to mess with a three metre wombat. Nothing like that has been seen for 100000 years. I think the Government did the right thing to suppress information about the Hole.

    2. Re:Those bastards by Jesus_666 · · Score: 1

      The wombat was infinitely deep, too. It also turned a sheep into Seal (due to bad grammar), who then went on to become a hit musician.

      --
      USE HOT GRITS WITH STATUE OF NATALIE PORTMAN (NAKED AND PETRIFIED)
  11. meh by Anonymous Coward · · Score: 0, Interesting

    Wow, a robot sub in a sinkhole... didn't we have machines capable of going MUCH deeper, say to film the Titanic, MANY years ago? I am not impressed.

    1. Re:meh by markov_chain · · Score: 3, Informative

      A bathyscaphe has been to 35,810 feet or so.

      --
      Tsunami -- You can't bring a good wave down!
    2. Re:meh by Fuji+Kitakyusho · · Score: 1

      I think the story is not the ROV, but rather the fact that the famed sinkhole was finally mapped after years of exploration and at least 1 tragic death.

    3. Re:meh by Anonymous Coward · · Score: 0

      35,810 feet or so? In the metric system this would be approximately 10,914.888 meters.

    4. Re:meh by redcliffe · · Score: 1

      As I understand it, the deep divers used a cable to lower their decompression tanks to the bottom, and perhaps themselves too. The guy that died there was pulled up on such a cable. Therefore wouldn't they have already known how deep the sinkhole was? Thanks,

      David

    5. Re:meh by ehui · · Score: 1

      They would only know that there was some sort of floor/shelf at the location of the dive. Maybe 5 meters away, there is a huge drop off. Zacaton is about 120 meters in diameter at the surface, so we are talking about quite a large cross sectional area.

      Of course, it turns out that it looks like there is a flat, sloped floor at the bottom, but there is still a tantalizing unmapped corner that may lead to deeper caverns.

  12. I believe this has been tried before by iminplaya · · Score: 1

    Unfortunately, he didn't get very far.

    --
    What?
  13. Why not for this one? by dsanfte · · Score: 1

    Why didn't they use a bathyscaphe for this descent, then?

    --
    occultae nullus est respectus musicae - originally a Greek proverb
    1. Re:Why not for this one? by Zeussy · · Score: 5, Informative

      Its not the depth, its the fact that its a sinkhole. uncharted at that, you need a ROV that can work in an enclosed space and create a map to know where it is accurately and how to get back.

    2. Re:Why not for this one? by Anonymous Coward · · Score: 0

      > Why didn't they use a bathyscaphe for this descent, then? http://en.wikipedia.org/wiki/JIM_suit

  14. It's an understatement: not deep enough! by freaker_TuC · · Score: 1

    Sorry, that's an understatement, this hole is not going deep enough!

    --
    --- I am known for the ones who want to find me on the net. Is that a privacy risk or a privilege? One might wonder..
  15. Re:Best fictional appearance by a robot submarine. by imsabbel · · Score: 1

    I heard it was pretty crappy, but some people hated hyperion and endymion, too.

    How does it relate to those, in style and content?

    --
    HI O WISE PRINCE. WHT TOOK U SO DAM LONG?
  16. Mel's Hole?-RIP! by Anonymous Coward · · Score: 0

    Not as new as knowing it's finally been mapped, and someone died doing it.

  17. Re:Anybody else read stinkhole? by EaglemanBSA · · Score: 1

    My robots caresses your moons. You're right, baby this sh- is hot.

    --
    Quiz: True or False -- On a scale of 1 to 10, what is your middle name?
  18. Re:Best fictional appearance by a robot submarine. by Anonymous Coward · · Score: 0

    By a Jupiter moon they probably meant Europa (haven't RTFA). It would be a good place for a diver robot, because it is covered with deep water (and ice on top). At least according to AC Clarke (but ACs don't have much credibility on slashdot, do they?).

  19. Re:They already got pictures available! by KylePflug · · Score: 1

    You almost got me. Ironically, my college network's internet filter saved me. It IS good for something...

  20. In other news... by __aaclcg7560 · · Score: 1

    Dick Cheney's top secret bunker has been located in a sinkhole. ;)

  21. FTA... by Capt+James+McCarthy · · Score: 1

    "Pebody says getting such a heavy craft is unlikely to make it to Europa, but believes exploring the environment closer to home might be a more realistic goal. "Lake Vostok under Antarctica would be a good precursor to Europa," he suggests."

    So the builder even realizes that the chance of going to Europa is not a possibility. Talk about an angle to get funding money. I guess they thought that Europa sounds cool, and was referenced in movies so Joe and Jane Taxpayer can better understand why they need money.

    --
    There are no loopholes. It's either legal or it's not.
    1. Re:FTA... by Christianfreak · · Score: 1

      Or maybe they'll learn something from the tech and be able to recreate it in a smaller and lighter bot that can go to Europa.

      Nah, that's too obvious. All scientists are about getting more money. Evil scientists.

    2. Re:FTA... by cbacba · · Score: 1

      It's a large creature but it's also basically a one of a kind.

      One of my friends is down there now on that project. Vostock has always been on the menu, although probably not for something that big either. Europa is an entirely plausible venture as they have equipment on new horizon which is working rather well - although again, it's not for the prototype.

      The gizmo has about 30+ microprocessors networked together, just about one for every section and function. I think once they get the basics operational and the initial testing complete is when they'll start making it into a tabletop device rather than a table sized device. While there's limits on this size due to deep diving requirements, it still should be capable of being somewhat smaller.

  22. Re:They already got pictures available! by MLease · · Score: 1

    This is why I have "Always show link domains" selected in my preferences. :)

    -Mike

    --
    I'm sorry; I don't know what I was thinking!
  23. In the town, where I was born..... by simm1701 · · Score: 1

    Altogether now:

    We all hack in a robot submarine, a robot submarine, a robot submarine....

    --
    $_="Slashdotter";$syn="OTT";s;..;;;sub _{print shift||$_};s!ash!Perl !;s=$syn=ack=i;tr+LLEd+BLAH+;_"Just Another ";_
  24. Re:They already got pictures available! by freaker_TuC · · Score: 1

    Whoever modded it troll seems to have lost the humor in parent post...

    --
    --- I am known for the ones who want to find me on the net. Is that a privacy risk or a privilege? One might wonder..
  25. World's deepest hole by Anonymous Coward · · Score: 0

    They finally probed Laura DiDio's vagina!

    1. Re:World's deepest hole by Laura_DilDio · · Score: 1

      No no no...the article was referring to a SINKhole, not a STINKhole.

    2. Re:World's deepest hole by sgt_doom · · Score: 1

      Isn't the world's biggest sinkhole at 1600 Pennsylvania Avenue, Washington, D.C., USA (I think it's a big white house)?

    3. Re:World's deepest hole by Laura_DilDio · · Score: 1

      Close...the occupant of that address is an ASSHOLE.

  26. Next up, a miniaturized version... by Anonymous Coward · · Score: 0

    ..called the Goatse Explorer. It's going to map the world's deepest bunghole.

  27. One thing is certain... by RationalRoot · · Score: 1

    We all die. Sooner or later. We all die.

    I've pushed many limits, mostly jumping out of reasonably good aircraft. I've also gone big water rafting where death was a real possibility. Been scuba diving in places where I really should not have been (OK, that wasn't co clever). All that time I had no real dependants. I have scars and broken bones to show for my troubles. But I also have experienced life in a way that most people never will.

    It is intense like most people cannot imagine. The highs are Huge.... so are the Lows. Sometimes there's an adrenaline rush, sometimes you have to cope with massive stress and stay calm. Often your life depends on not doing stupid things. Sometimes you do stupid stuff and survive in spite of yourself.

    Mostly you train, you prepare, you check, you have someone else check. Then you train again. When you do sometime stupid and survire in spite of yourself, you are glad that you're still able to be pissed off at your self.

    You don't consider death on a regular basis. You tend to re-evaluate when a friend gets badly broken. I have a lot of friends who have gotten badly broken - most jumped again. Modern medicine is pretty good as far as acute traumatic injuries are concerned - mostly.

    I never really planed on dying :-) People did die. Some people died doing dumb ass things, and some people did everything right and died anyway. Some people thing that we who push the limits have a death wish, that's just not true. When you push the limits you have to want to live. Sometimes you have to fight very hard to live.

    You also re-evalute as life changes. Now that I'm married with a child, I would not even consider doing some of the things that I used to do. I'm glad I did them. Some days life was slow and easy, some days life was a freight train. I enjoyed both. Now I find other challanges.

    --
    http://davesboat.blogspot.com/
    1. Re:One thing is certain... by gEvil+(beta) · · Score: 3, Insightful

      We all die. Sooner or later. We all die.

      I recently watched a few people get into a flamefest on another site because someone made the comment that "America is tied for first for the highest mortality rate." It was great watching all the "America: Love it or leave it" people come out saying there was no way that was possible and calling the guy a troll and telling him that America was the greatest country so it couldn't be true, etc. None of them seemed to be able to figure out that the guy was saying "everyone dies". : p

      --
      This guy's the limit!
  28. Perhaps this could map Lost Sea by dmleach · · Score: 4, Interesting

    The world's largest known underground lake is Lost Sea, in Tennessee between Chattanooga and Knoxville. It's worth stopping off if you're ever in the area. Back in the 1970's, a group of divers tried to map the lake. The bubbles from their air tanks dislodged so much debris from the ceilings of the caves that they were unable to complete the project. I wonder if something like this robot would be able to finish the job.

  29. Thank goodness! by Junior+J.+Junior+III · · Score: 1

    Now, the next time I go to the world's deepest sinkhole, I won't have to worry about getting lost. Is it on Google Maps yet?

    --
    You see? You see? Your stupid minds! Stupid! Stupid!
  30. Kind of like a poster I saw by RationalRoot · · Score: 1

    It was raising awareness of a particular disease. I can't remember the disease, but the poster stated something along the lines of

            30% of people born with this genetic disorder will eventually die.

    The corollary I presume is that the remaining 70% are immortal. While I don't want to die any time soon, I think being actually immortal could be a drag.

    --
    http://davesboat.blogspot.com/
    1. Re:Kind of like a poster I saw by Rycross · · Score: 1

      I had a friend who wrote an essay on the dangers of oxygen addiction. One of the facts was that 100% of people addicted to oxygen eventually die.

  31. The DEPTHX was just covered on this podcast by DeafDumbBlind · · Score: 1

    It's during the Fraser Cain and Pamela Gay interview segment.
    http://www.theskepticsguide.org/skepticsguide/podc astinfo.asp?pid=95

    --


    Jesus used to be my co-pilot, but we crashed in the mountains and I had to eat him.
  32. At the bottom it found ... by Bob-taro · · Score: 1

    ... a stockpile of Iraqi WMDs.

    --
    Prov 9:8 Do not rebuke mockers or they will hate you; rebuke the wise and they will love you.
  33. Actually, it's not completely mapped! by Scott7477 · · Score: 1

    The summary is a little misleading(surprise, surprise). According to the article, "The sinkhole may be connected to even deeper caverns. At the bottom of the slope, was an area DEPTHX's could not probe. This could be simply a depression or the entrance to further caves. The researchers hope to send the probe back later this week to find out, and to explore any connected passages." The opening paragraph states that "A robotic submarine yesterday mapped the bottom of the world's deepest water-filled sinkhole in Mexico for the first time." Notice that it doesn't say "completely mapped."

    I'm not trying to play down the achievement here. These explorers have done a great job and demonstrating the usefulness of ROV technology for exploring places where it is dangerous for people to go is very important. This should remind us that there are plenty of unexplored areas here on and in the Earth; that sense of mystery is a nice thing. There's been a lot of hoo-ha about how there are supposedly no places left to explore on Earth; this story should put a nail in the coffin of that idea. The subterranean parts of Earth and the open ocean depths remain largely unexplored.

    --
    "Lack of technical competence coupled with the arrogance of power, as usual, leads to no good end."
  34. Appropriate? by Johann+Public · · Score: 1

    "All these worlds are yours save Europa. Make no landings there."

  35. Re:Mystery Spot by William_K_F · · Score: 1
  36. Re:Best fictional appearance by a robot submarine. by Cragen · · Score: 1
    To stay off-topic (re: robot subs in Jupiter's moons), "Ilium" and "Olympus", by Dan Simmons, were both great books. As the parent notes, not much will ever compare well to his "Hyperion" and "Endymion" books. (Would that be a tetrology?) Technically, (from my shallow understanding of writing) they are all of the first rank. The Endymion books seem to ask more interesting psychological and philosophical questions, to my mind, along with great action, of course.

    Then, again, how often do you get to read, as in "Olympus", about a human disemboweling a God? The human being Ajax of ancient Greece, this god cannot kill him without sticking an arrow is Achilles' famous ankle. This particular god cannot die so continues to suffer the pain of disembowelment for quite some time, until things get ever worse for that god. (I'll keep the name of the god out of this so as to not include much spoilage.) Not a concept I had ever mulled over before. Thankfully. (As for god-killing, you'll have to read the books to see why and how, etc.)

    Good stuff All of it!

  37. Easier way? by jgoemat · · Score: 1

    Why not train a dolphin to do the exploration? Strap a camera and sensors to it and let it do the work. Once we have that technology we can strap lasers to them!

  38. Caverns Unknown to Man by tm2b · · Score: 1

    If you're interested in Shek Exley's story, you can find it in the book Caverns Unknown to Man, by Steve Dalcher. The book is out of print, but can still be found in some tech diving shops, particularly those near the freshwater caves in northern Florida (where he grew up and cut his teeth).

    The man really was a god among divers, and saved uncounted divers through his use of accident analysis to create a safe methodology for cave diving. The ones who die, do not follow his methods (and yes, that includes his final dives).

    --
    "It is our blasphemy which has made us great, and will sustain us, and which the gods secretly admire in us." - Zelazny
  39. Re: no, it's not remotely operated fromTexas by Anonymous Coward · · Score: 0

    So are they actually operating this thing from Texas? The article is not clear on that.
    The team is based in the outskirts of Austin, Texas. They loaded the robot onto a truck, drove it down to Mexico, and lowered it into the water. Once in the water the robot is autonomous. It maps the surroundings and plans its own route.

    How do I know? I've been to the lab. I met the team, I touched the robot, and I read the source code.