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7.4-Magnitude Earthquake Strikes Off Japan; Tsunami Alert Issued

There is breaking news that a 7.4 Magnitude Quake has hit off the coast of Japan, and a Tsuanmi warning has been made. Please post updates in the comments.

49 of 313 comments (clear)

  1. Fastest slashdot story ever! by inu_maru · · Score: 5, Informative

    I am still dizzy from the shake (living in yokohama), plenty of blurry images right now in http://www3.nhk.or.jp/nhkworld/

    --
    Mu
    1. Re:Fastest slashdot story ever! by chemicaldave · · Score: 3, Interesting

      Vote this up. Link has a live english translation stream.

    2. Re:Fastest slashdot story ever! by theNetImp · · Score: 4, Interesting

      This one lasted a good 2 minutes, steady shake once it got going. Trying to get back to sleep here in Chiba Prefecture.

    3. Re:Fastest slashdot story ever! by mc3000 · · Score: 5, Informative

      No injuries reported, according to NHK. This was in the vicinity of the 9.0 quake, 40 km below the sea bed off Sendai.

    4. Re:Fastest slashdot story ever! by Pharmboy · · Score: 3, Funny

      You're right, this is fast. At first I just though it was a dupe from a few weeks ago.

      --
      Tequila: It's not just for breakfast anymore!
    5. Re:Fastest slashdot story ever! by inu_maru · · Score: 2

      live in a tall-ish building, the quake was over 3-shindo, was playing halo... yeah...

      --
      Mu
    6. Re:Fastest slashdot story ever! by demonbug · · Score: 3, Informative

      Off-topic, but what's up with Slashdot links and FF4? Tried to go look at the images and the link didn't work. Had to copy & paste.

      I've been having the same problem. Found it works to double-right-click (to open the context menu; single right click doesn't seem to work) and select "open in new tab", but pretty ridiculous. Even worse than before, when control-clicking to open a link in a new window just expand parent threads, often causing you to have to hunt all over the place to find the comment you were reading.

    7. Re:Fastest slashdot story ever! by Anonymous Coward · · Score: 4, Informative

      For ref, 'cos I was wondering, "shindo" is a japanese earthquake scale, not directly comparable to the richter scale (or the "moment magnitude" scale often mislabelled as richter in the media) - shindo is for various points on the earth's surface, richter for overall energy of quake.

    8. Re:Fastest slashdot story ever! by stillnotelf · · Score: 2

      It also fails in FF3 and Ubuntu.

    9. Re:Fastest slashdot story ever! by Plasmoid2000ad · · Score: 2

      Same in FF3.6, only no right clicking either so no cut and paste.

    10. Re:Fastest slashdot story ever! by jkauzlar · · Score: 2

      I have to right-click twice to get the context menu. Haven't seen this before today and I've had ff4 for awhile now.. Also, the checkbox to post anonymously doesn't work any more.

    11. Re:Fastest slashdot story ever! by ThunderBird89 · · Score: 2

      Middle mouse click not working in Chrome either.

      --
      Hyperbole: I use it liberally!
  2. 2m high tsunami by AmiMoJo · · Score: 5, Informative

    According to the Japanese Meteorological Agency the tsunami is about 2m high. Coastal defences should be okay in most places but obviously anyone near the coast should retreat inland if possible.

    --
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    1. Re:2m high tsunami by tripleevenfall · · Score: 5, Funny

      Thank you, I just happened to be checking slashdot to see what I should do.

    2. Re:2m high tsunami by Farmer+Tim · · Score: 2

      So I guess we should thank Mark Zuckerberg for cutting out the deadwood.

      --
      Blank until /. makes another boneheaded UI decision.
  3. Re:Crap! by Anonymous Coward · · Score: 3, Insightful

    not funny

  4. 7.4 != 9.2 Not even close. by 140Mandak262Jamuna · · Score: 3, Informative

    The scales are logarithmic. 7.4 earthquake is about 150 times less powerful than a 9.2

    --
    sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
    1. Re:7.4 != 9.2 Not even close. by 140Mandak262Jamuna · · Score: 4, Informative

      The correct ratio seems to be 31 ^ ( 9.2 - 7.4 ) = 483. So this earthquake would be considered a moderate one, about 500 times less powerful than the 9.2 that stuck a few weeks ago.

      --
      sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
    2. Re:7.4 != 9.2 Not even close. by pclminion · · Score: 2

      So you're talking about blowing up a Volkswagon with a cluster bomb instead of a nuclear warhead. The car is still destroyed afterward. If the 7.4 had happened without a preceding 9.2 people would be talking about the 6.6 aftershocks being "not even close" to the 7.4... People, all of these are really big earthquakes.

    3. Re:7.4 != 9.2 Not even close. by gilleain · · Score: 2

      There seems to be some sort of increase in the size of the slashdot commenter estimates of earthquake power ratios. First commenter said 30 times, then 100, then 150, now 500. Is there a logarithmic function to describe this increase in accuracy?

    4. Re:7.4 != 9.2 Not even close. by ivan_w · · Score: 2

      This figure reflects pretty much measures the energy released during the event.

      For effects, you want to use the Modified Mercalli Intensity Scale - which is a closed scale - ranging from 0 (not felt) to 10 (everything leveled).

    5. Re:7.4 != 9.2 Not even close. by Noughmad · · Score: 5, Funny

      The Arena quake was 3.0

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      PlusFive Slashdot reader for Android. Can post comments.
  5. Also in Mexico by f1vlad · · Score: 4, Informative
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    o_O
  6. Actually there were two 7.4 within a minute by McNihil · · Score: 2, Informative

    14:32:41 & 14:32:00

    about 100km apart (caveat not so good at spherical trig in head calculations)

    http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/region/Asia_eqs.php

    1. Re:Actually there were two 7.4 within a minute by McNihil · · Score: 2

      actually they took the 14:32:00 out... hmmm... something is fishy.

    2. Re:Actually there were two 7.4 within a minute by qubezz · · Score: 2

      Earthquake tremors travel from the epicenter at slower speeds than one might expect. The fastest P seismic waves travel at a speed around 5km/s, with the slower and more significant S waves following at about 60% that speed. Tokyo didn't begin feeling the earthquake until about 60 seconds after the event, enough time for early warning systems to go off on tv screens and cel phone broadcasts. Early earthquake reports like this may be in error since the event time, location, and magnitude needs to be compiled from multiple seismometers after the event has finished, and the propogation delay means that different sensors will experience the quake at different times.

  7. tsunami warning URL by mrflash818 · · Score: 4, Informative

    http://www.jma.go.jp/en/tsunami/

    "Occurred at 23:32 JST 07 Apr 2011
    Region name Miyagi-ken Oki
    Depth about 40 km
    Magnitude 7.4"

    --
    Uh, Linux geek since 1999.
  8. Article on MercuryNews.com by De+Lemming · · Score: 4, Informative

    Article: Magnitude 7.4 earthquake hits off Japan coast

    Some quotes: "Officials say Thursday's quake was a 7.4-magnitude and hit 25 miles (40 kilometers) under the water and off the coast of Miyagi prefecture." "Buildings as far away as Tokyo shook for about a minute." "The Japan meteorological agency issued a tsunami warning for a wave of up to one meter." "Hundreds of aftershocks have shaken the northeast region devastated by the March 11 earthquake, but few have been stronger than 7.0."

  9. Re:trains by antifoidulus · · Score: 4, Interesting

    Most are already offline, it happened at 11:30 there, the shinkansen have probably almost all stopped, most regional services in the area probably weren't running at any real capacity anyway, so I doubt they would be running there. It was far enough away from Tokyo that I doubt any of the metros were really affected.

    FWIW I was riding on the shinkansen(headed to Germany for a bit since I didn't have water and food at my place :P) when a 6.1 struck Shizuoka. I have to hand it to the designers and operators of those cars, they handled it really well. You could actually barely feel anything on the car, but all of a sudden the lights went out and the train came to a sudden, but not abrupt stop since we lost all power. No derailing, no injuries.

  10. Japan Meteorological Agency Website... by torxim · · Score: 5, Informative

    For near real-time info surrounding the Tsunami impact http://www.jma.go.jp/en/tsunami/

    1. Re:Japan Meteorological Agency Website... by Heian-794 · · Score: 2

      Map with local magnitudes (on the Japanese "shindo" scale):

      http://tenki.jp/earthquake/detail-4575.html

      Tenki.jp was my go-to site during the last quake. It shows quakes and tsunami warnings, updated almost instantly.

  11. the US West Coast is next by circletimessquare · · Score: 5, Insightful

    it's long overdue

    could take a month, could take a decade, but if you live on the US West Coast and you have not prepared for the big one, now is the time

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
    1. Re:the US West Coast is next by Spatial · · Score: 2

      Overdue? Sounds like gambler's fallacy to me.

    2. Re:the US West Coast is next by wytcld · · Score: 2

      More at Wikipedia. Summary: Can easily go over 9.0 from N. California to BC. If that happens, Portland, Seattle and Vancouver would be severely damaged.

      --
      "with their freedom lost all virtue lose" - Milton
  12. Really? BBC Twitter as your source? by thomasdz · · Score: 4, Informative

    The USGS is like a million times better.
        Here's the link: http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc0002ksa.php
    and here's the Tsunami info:
        http://ptwc.weather.gov/ptwc/text.php?id=pacific.2011.04.07.143955

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    Karma: Excellent. 15 moderator points expire sometime.
  13. Re:Earth-Pissed Japanese in Space by elrous0 · · Score: 2

    Maybe someone from the future is trying to sink the island before they start turning out robot armies.

    --
    SJW: Someone who has run out of real oppression, and has to fake it.
  14. Re:A Twitter feed? by jonbryce · · Score: 2

    It is the BBC's twitter feed. They hadn't written the article at that point, but they have now, and you can find it here. http://www.bbc.co.uk/news/world-asia-pacific-13005110

  15. Re:7.4 versus 9.0 by Kentari · · Score: 4, Informative

    One step in magnitude means a factor 10 increase in ground displacement. In energy this is about a factor 30 per magnitude. A 7.0 packs about 900 times less energy than a 9.0. The new earthquake has already been revised to 7.1.

  16. Cluster-Fukushima by wcrowe · · Score: 3, Funny

    Just trying to coin a new term.

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    Proverbs 21:19
  17. Re:l2type by Qzukk · · Score: 3, Funny

    hey, you try typing on a shaking keyboard!

    --
    If I have been able to see further than others, it is because I bought a pair of binoculars.
  18. Funny? Not really. Ironic? Maybe. True? Definitely by Anonymous Coward · · Score: 2, Insightful

    Note the lame post-facto "sorta apology" to the readers.
    http://www.zdnet.com/blog/apple/how-will-japan-earthquake-affect-apples-ipad-supply-chain/9763

    Authorâ(TM)s Note: A number of readers have complained that this article is insensitive to the pain and suffering of the Japanese people. Please accept my sincere apology. I have friends and former colleagues in Japan and I offered them my prayers for their safety and recovery last night. I have been to Japan and have a respect for its traditions and people. The devastation from the quake is terrible.

    At the same time, my editorial mission here is to look at Apple, its products and markets. If that appears callous, I ask your forbearance. Some of the comments in the story were made several months ago, so please keep that context in mind.

    http://www.businessinsider.com/gene-munster-apple-supply-demand-2011-3

    Apple's supply chain is likely temporarily going to be affected by the Japan earthquake and tsunami, Piper Jaffray analyst Gene Munster writes today, but demand for Apple products is stronger than ever, he says, and that should ultimately drive shares higher.

    Hilarious phrasing here, "not much impact - more worried about the impact in the next quarter":
    http://www.bbc.co.uk/news/business-12782566

    "In the short term, there won't be much impact," said chief executive Yang Yuanqing of Lenovo. "We are more worried about the impact in the next quarter."

    No shit? Employee absences common?
    http://www.internetevolution.com/author.asp?section_id=774&doc_id=205416&f_src=internetevolution_gnews

    Getting raw materials supplied and distributed remains a challenge in Japan. Disruptions to the country's transportation systems have made employee absences common. Interruptions in Japan's electricity supply have hindered maintenance of sensitive processes such as semiconductor lithography. Because of the setbacks, Apple delayed iPad2 shipments by one week from the original March 25 launch to allow it to catch up with production, given the shortfall in Japan-sourced parts.

    But don't worry. Apple's supply chain is very robust and you'll be able to get your iPrick in time for Christmas.
    http://www.minyanville.com/businessmarkets/articles/thestreet-apple-supply-chain-japan-supply/4/4/2011/id/33755

    Apple's (AAPL) supply chain remains robust, according to analyst firm Canaccord Genuity.

    "While we believe supply could be tight for the industry due to Japan, we believe Apple is leveraging its dominant market position and will fare much better than competitors," wrote Canaccord analyst Michael Walkley in a note Monday. "We believe suppliers will likely provide Apple with preferential supply, as Apple is often the largest customer for many suppliers."

  19. To: Mother Nature by BriggsBU · · Score: 2

    Leave Japan alone :(

  20. Re:Earth-Pissed Japanese in Space by GooberToo · · Score: 2

    Or more likely, completely destroy the oceanic ecosystem.

    While tragic, the disasters in Japan have brought a small yet direly needed reprieve from Japan's massive and completely disproportionate over fishing of the seas.

  21. Re:trains by TheRaven64 · · Score: 3, Funny

    The British rail system is the most advanced in the world. Nowhere else do the stations have an automated system for generating and announcing plausible excuses for delays.

    --
    I am TheRaven on Soylent News
  22. Re:7.4 versus 9.0 by maxume · · Score: 2

    A 9 releases 1000 times the energy of a 7:

    http://en.wikipedia.org/wiki/Moment_magnitude_scale#Definition

    And a 9 is about 250 times more powerful than a 7.4 (there is a factor of 1.5 in the exponent that "it's just a logarithmic scale" misses).

    --
    Nerd rage is the funniest rage.
  23. i miss k5 too by circletimessquare · · Score: 2

    the problem is the low iq racist morons

    you find those on any site, but as time went on, they tended to represent a larger and larger piece of the k5 pie (which makes sense, because they were driving anyone not a low iq racist moron away)

    k5 is a failed experiment, because it shows you can't let the inmates run the prison. you actually need to shoot a certain loud ignorant few of them in the head to keep things in order (i am advocating termination of account, not actual real life murder... i know you know i am speaking in analogy, but if the subject matter is k5, you have to be crystal clear because we are dealing with the issue of the dregs of society here, and some of those fucking retards might be reading this)

    there are perhaps only 8 people on k5 that need to be removed (and actively re-removed, along with 40 of their puppet accounts, on an ongoing basis) before k5 is useful again. but no one will remove those 8. so those loud 8 will vomit their toxic ignorance (poor michael crawford), and drive everyone else away, until k5 is just those 8 completely useless twatstains, and k5 is completely and utterly dead to the realm of human thought

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
  24. Not moderate. by MoellerPlesset2 · · Score: 2

    7.4 is a major earthquake. That's about the size of the 1996 Kobe Earthquake, larger than the 1986 Loma Prieta quake. Even by Japanese standards it's large.

    It's likely to have mild effects only because it occurred far offshore, not because 7.4 is small.

    1. Re:Not moderate. by wisty · · Score: 2

      Exactly. "Moderate" is a factor of 2 things - who's talking (Japanese laugh of 5s, while the 5.6 Newcastle quake was the most devastating earthquake in Australian history - it killed 13 people) and how far away you are (a deep earthquake 100 miles away is usually safe, but a 3.0 can kill you if you are in a mineshaft, close to the hypercenter).

  25. Re:What's the worst that could happen? by quenda · · Score: 2

    I mean, it's just a little wave. It's not like a full on nuclear disaster.

    And the "nuclear disaster" pales into triviality compared to the tsunami that caused it, despite the media obsession.
    Oh, ... you were being ironic. Sorry.