It is worse than that. It looks like their postcode database was in OS GR coordinates (good), which they converted to lat,long; but used the new coords as if they are WGS84 and not Airy36.
This results in errors of a few hundred metres. I've mailed them point out the error.
Just because you can see one volcano from another, does not mean they are connected in a meaningful way within the top 10-20 miles of the lithosphere (crust).
Yes, if you have a lava dome close to collapse (eg. Mt St Helens in early May 1980), then a reasonable size earthquake could be the trigger to cause that collapse. And that earthquake could be local, from another volcano, or even another fault (no, Parkfield has nothing to do with the current activity in WA): but the collapse was going to happen anyway, whether it is at that moment or in a couple of days time.
Some of the earthquakes are approaching magnitude 3, so it is very likely that the Rainier seismometers are picking up activity from Mt St Helens.
A seismometer can pick up small local earthquake, or a large distant earthquake. Although they'll have different frequency signatures, it is virtually impossible to get a good location for it unless you have multiple records from different places. I would wait until the CVO has produced some locations before drawing any conclusions.
At the moment, the frequency of earthquakes means the CVO staff are having to manually locate the earthquakes. (probably interference between each earthquake signal)
Although both Mt Rainier, Mt St Helens, and all the other dormant and volcanoes in Washington and Oregon are due to the same subduction zone; an eruption at Mt St Helens will not influence Rainier in any way.
The USGS is currently predicting a high likelihood of Rainier experiencing a small eruption in the next 50 years. This will melt Rainier's icecap and produce lahar flows (heavy, fast mud flows - these will take out bridges and buildings). The outskirts of Seattle are built on the deposits of old lahars from Rainier...
Early this year, a warning system (a bit like the tsunami system in the Pacific) has been put in place between Rainier and Seattle. This should give warning of lahars as they start. This could give enough warning to get people out of valley bottoms, etc - but how much of the populace knows what a lahar is and what the danger is???
Incidentally, a couple of days ago, I plotted the ongoing Mt St Helens earthquake swarm on some earthquake hazard maps and put the results
here.
After a lot of trying, you've finally slashdotted Google! lol
I keep getting server errors when I try searching for things like donuts or my own webpage. Either that, or it thinks Irving,TX is a black hole. Hmm, don't answer that.
...and NASA's Mars Rovers will spend the first week trying to find each other. Once they have found each other, the rest of the mission will be characterised my lots of exclamations of "Gee Honey, Isn't it just quaint!"
RB
Windows NT has been available on the Alpha for at least 6 years - I've had the installation CDs for at least that long!
I've worked on 64-bit conversion projects for applications on HP-Unix, and it tends not be as trivial as it should be. I'd compare it to converting a 16 bit Windows app to 32-bit Windows.
Yes, both should be trivial, but there are enough gotchas! On a per line of code, the Windows conversion was probably more involved, but then that was because it wasn't written as well - eg. assuming an "int" is 16 bits long.
Ferro-magnetic drives? Aye they were luXury. Wi only 'ad paper cards. Lots of paper cards. Don't get em mixed up either - would take months to sort 'em out.
Paper cards wer so expensive wen thi came out, like, wi culdn't AFFORD the puncher! Aye, we had to use ar TEETH! Good thing Binary only 'ad two bits - a hole or no hole.
Of course in them days Binary wa' still a newfangled invention. Wen I started out we were still using UNARY. One bit. Tha was it!
Tell them Linux whippersnappers, and they wuldn't believe yer!
ZonePhones (and a couple of competing products) were around in the UK in the 1980s, about the same time as the first cellphones came out with which they competed.
Receiving stations were positioned in various public places - airports, stations, motorway service stations, etc. Or that was the idea. Can't remember the exact coverage maybe 100m radius - definitely not much more, probably less. So a bit like a cross between a cellphone and one of those wireless telephones you can buy for your home.
Their advantage over the "brick" cellphones of the day, were their size - more like modern cellphones. But "brick" cellphones had the advantage of large areas of coverage, whilst zonephones were limited to a few hotspots here and there.
Needless to say the scheme was a spectacular failure. Last time I looked at Greenweld they had some of the base station parts available as surplus.
Zircon samples dated to over 4.3Ga, but these have been reworked. They are found in sedimentary rocks, not because the zircon "crystallised in an aqueous medium" but because they were in rocks which were eroded & then formed the sedimentary rocks. Zircons are very resistant to weathering. They are hard and chemically resistant (ie. they don't break down in water over geological timescales unlike many minerals).
The exact quantities of surface water & continental area (not directly related, btw) over the past 4.6Ga are open to debate, but liquid surface water is thought to have existed by about 4Ga give or take.
It should be noted that the earliest confirmed fossils (3.9Ga) are in 'wet' (rather than aeolian) sedimentary rocks.
Those are downright annoying. More annoying than cell-phones. At least cell-phones only assault your ears. Those things plough through ankles and legs like no-bodies business. (think of an impatient sod in an electric wheel-chair who just ploughs through people)
They're too huge and cumbersome. People who can't decide what they're doing (and slightly older kids who joyride them) just clog the place up.
Turning them is difficult (maybe it isn't, but it seems most people pushing them have trouble).
Maybe if the aisles were 2-3 times bigger they might work. Just can't see Albertson's trying that, somehow...
Same industry too, although their development was for in-house use only.
For graphical, geological, and geographical displays, have you tried INT? They sell various libraries/toolkits to do all this display stuff for you (graphs, seismic, contours, well logs, etc), and specialise in the oil industry, but also sell to other industries. Cross platform C++ (most Unices & Windows, even WinCE), and Java.
I bought this book a couple of years ago, when I had an idea for a project which I thought could benefit from a Forth-style system. In those days I did a lot more at-home dabbling which I just don't have time for now, and that idea has gone by the wayside.
If you have any questions for Elizabeth Rather, she can be found on Usenet. When I asked for an "introductory book for modern Forth" I believe she recommended her own book!:-)
Threaded Interpretive Languages (TILs) such as Forth have very elegant inner workings. I even wrote one as a kid. And I actually used it for a few months. Although my Forth-inspired TIL was limited to 16 bit integer math (on an 8086 I think it was), I still managed to get it to draw 3d wireframe graphics in real time on a PLUTO graphics card:-)
Well there's COSM (used by Folding@Home) and United Devices (THINK,etc).
Still centralised systems, but they work for different projects - unlike d.net & SETI@Home which are 'hard-wired' for particular projects.
There's lots of work going into this kind of stuff. As the current systems are considerably more advanced compared to the d.net circa 1997 system (when I first started to run a client), I'm sure another 5 years will see huge improvements in usability & flexibility.
RB
Re:Let's try this instead
on
ECCp-109 Solved
·
· Score: 2, Interesting
Yes, it is called "Grid Computing". A number of software magazines and journals have featured articles on it in recent months. I think even Scientific American had an article on it 6 months or so ago.
The scheduling/etc problems for a Grid are pretty big, so the first Grids will have nodes based in academia and each node will be pretty powerful (eg. a small cluster).
If such a scheme works and as the technology matures, maybe we'll see Grid nodes on home computers.
And remember that it's on the equator, which every piece of orbiting debris crosses twice during each orbit.
Also true of ALL Great Circles around the Earth!
What you mean is that more things in orbit pass over the lower latitudes than higher latitudes, because all orbits pass over the Equator irrespective of inclination, but only highly inclined orbits pass over the higher latitudes.
Slashdot Mirror
Why the hell am I wasting my time at astronaut school, then?!
Because you're a space cadet!
RBIt is worse than that. It looks like their postcode database was in OS GR coordinates (good), which they converted to lat,long; but used the new coords as if they are WGS84 and not Airy36. This results in errors of a few hundred metres. I've mailed them point out the error.
Just because you can see one volcano from another, does not mean they are connected in a meaningful way within the top 10-20 miles of the lithosphere (crust).
Yes, if you have a lava dome close to collapse (eg. Mt St Helens in early May 1980), then a reasonable size earthquake could be the trigger to cause that collapse. And that earthquake could be local, from another volcano, or even another fault (no, Parkfield has nothing to do with the current activity in WA): but the collapse was going to happen anyway, whether it is at that moment or in a couple of days time.
Richard
Some of the earthquakes are approaching magnitude 3, so it is very likely that the Rainier seismometers are picking up activity from Mt St Helens.
A seismometer can pick up small local earthquake, or a large distant earthquake. Although they'll have different frequency signatures, it is virtually impossible to get a good location for it unless you have multiple records from different places. I would wait until the CVO has produced some locations before drawing any conclusions.
At the moment, the frequency of earthquakes means the CVO staff are having to manually locate the earthquakes. (probably interference between each earthquake signal)
RichardAlthough both Mt Rainier, Mt St Helens, and all the other dormant and volcanoes in Washington and Oregon are due to the same subduction zone; an eruption at Mt St Helens will not influence Rainier in any way.
The USGS is currently predicting a high likelihood of Rainier experiencing a small eruption in the next 50 years. This will melt Rainier's icecap and produce lahar flows (heavy, fast mud flows - these will take out bridges and buildings). The outskirts of Seattle are built on the deposits of old lahars from Rainier...
Early this year, a warning system (a bit like the tsunami system in the Pacific) has been put in place between Rainier and Seattle. This should give warning of lahars as they start. This could give enough warning to get people out of valley bottoms, etc - but how much of the populace knows what a lahar is and what the danger is???
Incidentally, a couple of days ago, I plotted the ongoing Mt St Helens earthquake swarm on some earthquake hazard maps and put the results here.
Richard (yes I was a seismologist 10 years ago)Any color as long as it is black!
After a lot of trying, you've finally slashdotted Google! lol
I keep getting server errors when I try searching for things like donuts or my own webpage. Either that, or it thinks Irving,TX is a black hole. Hmm, don't answer that.
RB
You forgot the RFID which they transplant under your skin, whilst you're asleep!
RB
...and NASA's Mars Rovers will spend the first week trying to find each other. Once they have found each other, the rest of the mission will be characterised my lots of exclamations of "Gee Honey, Isn't it just quaint!"
RB
RB
RB
I've worked on 64-bit conversion projects for applications on HP-Unix, and it tends not be as trivial as it should be. I'd compare it to converting a 16 bit Windows app to 32-bit Windows. Yes, both should be trivial, but there are enough gotchas! On a per line of code, the Windows conversion was probably more involved, but then that was because it wasn't written as well - eg. assuming an "int" is 16 bits long.
RB
Ferro-magnetic drives? Aye they were luXury. Wi only 'ad paper cards. Lots of paper cards. Don't get em mixed up either - would take months to sort 'em out.
Paper cards wer so expensive wen thi came out, like, wi culdn't AFFORD the puncher! Aye, we had to use ar TEETH! Good thing Binary only 'ad two bits - a hole or no hole.
Of course in them days Binary wa' still a newfangled invention. Wen I started out we were still using UNARY. One bit. Tha was it! Tell them Linux whippersnappers, and they wuldn't believe yer!
RB
Needless to say the scheme was a spectacular failure. Last time I looked at Greenweld they had some of the base station parts available as surplus.
RB
Zircon samples dated to over 4.3Ga, but these have been reworked. They are found in sedimentary rocks, not because the zircon "crystallised in an aqueous medium" but because they were in rocks which were eroded & then formed the sedimentary rocks. Zircons are very resistant to weathering. They are hard and chemically resistant (ie. they don't break down in water over geological timescales unlike many minerals).
The exact quantities of surface water & continental area (not directly related, btw) over the past 4.6Ga are open to debate, but liquid surface water is thought to have existed by about 4Ga give or take.
It should be noted that the earliest confirmed fossils (3.9Ga) are in 'wet' (rather than aeolian) sedimentary rocks.
RB (FGS)
They're too huge and cumbersome. People who can't decide what they're doing (and slightly older kids who joyride them) just clog the place up. Turning them is difficult (maybe it isn't, but it seems most people pushing them have trouble).
Maybe if the aisles were 2-3 times bigger they might work. Just can't see Albertson's trying that, somehow...
RB
We have a compost heap too, but I can't really see the relevence to Slashdot unless there's something on his site which explains all?
RB
For graphical, geological, and geographical displays, have you tried INT? They sell various libraries/toolkits to do all this display stuff for you (graphs, seismic, contours, well logs, etc), and specialise in the oil industry, but also sell to other industries. Cross platform C++ (most Unices & Windows, even WinCE), and Java.
http://www.int.com
If you're staying with C++ cross-platform GUIs, X-Designer isn't bad. Not a patch on Visual Studio, but then Visual Studio isn't very cross platform.
For source management, there are lots of tools. I've only used the SourceSafe family and Perforce. Perforce was the better IMHO.
RB
If you have any questions for Elizabeth Rather, she can be found on Usenet. When I asked for an "introductory book for modern Forth" I believe she recommended her own book! :-)
Threaded Interpretive Languages (TILs) such as Forth have very elegant inner workings. I even wrote one as a kid. And I actually used it for a few months. Although my Forth-inspired TIL was limited to 16 bit integer math (on an 8086 I think it was), I still managed to get it to draw 3d wireframe graphics in real time on a PLUTO graphics card :-)
RB
Still centralised systems, but they work for different projects - unlike d.net & SETI@Home which are 'hard-wired' for particular projects.
There's lots of work going into this kind of stuff. As the current systems are considerably more advanced compared to the d.net circa 1997 system (when I first started to run a client), I'm sure another 5 years will see huge improvements in usability & flexibility.
RB
The scheduling/etc problems for a Grid are pretty big, so the first Grids will have nodes based in academia and each node will be pretty powerful (eg. a small cluster).
If such a scheme works and as the technology matures, maybe we'll see Grid nodes on home computers.
RB
RB
Also true of ALL Great Circles around the Earth!
What you mean is that more things in orbit pass over the lower latitudes than higher latitudes, because all orbits pass over the Equator irrespective of inclination, but only highly inclined orbits pass over the higher latitudes.
RB
I crash enough whilst ice skating, without juggling a PC with an ad-ridden wireless connection! RB
You didn't write scripts for ST:Voyager, by any chance?
RB