Wednesday, May 21, 2008
Mount St. Helens growls mysteriously
Random Gallery Photo
Sunset in Cape TownPosted by Alfie Posted by Ninja T. Penguin
(ERIK ROBINSON - Columbian staff writer) from United States of America.
As John Pallister circled above Mount St. Helens on Sunday afternoon, a sharply defined line of steam caught his attention.
"It was interesting enough to take some pictures," said Pallister, a U.S. Geological Survey scientist and private pilot.
He didn't know it, but his USGS colleagues back in Vancouver had already noticed a 2.9-magnitude earthquake followed by a small but unusually long tremor at the steadily erupting volcano. The tremor, in fact, continued for almost an hour and a half, punctuated by a 2.7-magnitude quake.
Such tremors typically signal that magma or gases are flowing underground like water in a pipe. The last tremor of note - a 55-minute stemwinder big enough to register on seismometers from Bend, Ore., to Bellingham on Oct....
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Sunset in Cape TownPosted by Alfie Posted by Ninja T. Penguin
(ERIK ROBINSON - Columbian staff writer) from United States of America.
As John Pallister circled above Mount St. Helens on Sunday afternoon, a sharply defined line of steam caught his attention.
"It was interesting enough to take some pictures," said Pallister, a U.S. Geological Survey scientist and private pilot.
He didn't know it, but his USGS colleagues back in Vancouver had already noticed a 2.9-magnitude earthquake followed by a small but unusually long tremor at the steadily erupting volcano. The tremor, in fact, continued for almost an hour and a half, punctuated by a 2.7-magnitude quake.
Such tremors typically signal that magma or gases are flowing underground like water in a pipe. The last tremor of note - a 55-minute stemwinder big enough to register on seismometers from Bend, Ore., to Bellingham on Oct....
Read More...
| Recent Significant Earthquakes | |||||
| Date | Magnitude | Latitude | Longitude | Depth | Region |
| Network: USGS | |||||
| 2008-05-21 02:45 | 5.1 | -9.9725 | 150.9122 | 35.4 | eastern New Guinea region, Papua New Guinea |
| 2008-05-21 01:30 | 5.1 | -9.9342 | 150.9329 | 35.0 | eastern New Guinea region, Papua New Guinea |
| 2008-05-20 21:37 | 5.4 | -8.5551 | -74.8345 | 129.6 | central Peru |
| 2008-05-20 20:42 | 5.2 | 53.3202 | 108.3624 | 10.0 | Lake Baykal region, Russia |
| 2008-05-20 17:08 | 5.7 | -3.1743 | 101.4752 | 47.4 | southern Sumatra, Indonesia |
| 2008-05-20 13:53 | 6.0 | 51.2702 | 178.7233 | 47.1 | Rat Islands, Aleutian Islands, Alaska |
| 2008-05-19 19:02 | 5.0 | -31.7065 | -178.6052 | 141.9 | Kermadec Islands region |
| 2008-05-19 17:52 | 5.2 | 32.2335 | 105.0347 | 10.0 | Sichuan-Gansu border region, China |
| 2008-05-19 15:19 | 5.2 | -5.7125 | 147.2116 | 121.3 | eastern New Guinea region, Papua New Guinea |
| 2008-05-19 14:49 | 5.2 | 1.7435 | 99.1959 | 10.0 | northern Sumatra, Indonesia |
| Recent Significant Earthquakes | |||||
| Date | Magnitude | Latitude | Longitude | Depth | Region |
| Network: EMSC | |||||
| Recent Volcanic Activity | |||||
| Date | Latitude | Longitude | Status | VolcanoName | Country |
| 2008-05-16 03:09 | -6.140 | 155.200 | Orange | Bagana | Papua New Guinea |
| 2008-05-16 03:09 | -19.520 | 169.430 | Orange | Yasur | So. Pacific |
| 2008-05-16 03:09 | -6.100 | 105.420 | Orange | Krakatau | Indonesia |
| 2008-05-16 03:09 | 14.760 | -91.550 | Orange | Santa Maria | Guatemala |
| 2008-05-16 03:09 | -5.450 | 150.030 | Orange | Garbuna | New Britain |
| 2008-05-16 03:09 | 31.580 | 130.670 | Orange | Sakura-Jima | Japan |
| 2008-05-16 03:09 | -16.510 | 168.350 | Orange | Lopevi | S. Pacific |
| 2008-05-16 03:09 | -0.800 | 127.330 | Orange | Gamalama | Halmahera |
| 2008-05-16 03:09 | -4.270 | 152.200 | Orange | Rabaul | New Britain |
| 2008-05-16 03:09 | 1.220 | -77.170 | Orange | Galeras | Colombia |
