Larsen, Jessica. Image courtesy of the AVO/UAF-GI.
Posted on 08/08/2008 7:08:51 AM PDT by cogitator
Okmok on August 3. It's gotten less active since this big day.
Larsen, Jessica. Image courtesy of the AVO/UAF-GI.
Kastochi: Aviation hazard code is RED
Google Earth image showing AVHRR image of volcanic cloud (band 4) from Kasatochi, and earthquakes located in the region. Note: coastlines are slightly mis-registered in this image. To download a .kmz file of AVO located earthquakes, see this page: http://www.avo.alaska.edu/earthquakes/ .
Picture Date: August 07, 2008
Image Creator: Bailey, John
Image courtesy of the AVO/UAF-GI and USGS.
Quickbird true-color satellite image of Kasatochi Island collected on April 9, 2004. Image copyright Digital Globe. Picture Date: April 09, 2004. Image Creator: Schneider, Dave. Image courtesy of AVO/USGS.
Last two reports:
Kasatochi Volcano Latest Observations 2008-08-08 03:29:25 Seismicity at Kasatochi remains elevated but has quieted down over the past hour. Satellite imagery suggests a continuous eruption plume.
2008-08-07 23:56:52 Seismic activity indicative of an ongoing eruption at Kasatochi volcano continues. The plume associated with a tremor episode beginning at 20:35 AKDT (4:35 UTC) appears to still be connected to the volcano indicating a continuous eruption.
An eyewitness account from a marine vessel (in the vicinity of Kasatochi and heading in the direction of Adak) reported ash fall (particles up to pebble size), spectacular lightening and thunder, and total darkness tonight between the hours of 21:00 and 23:15 AKDT.
So, all of that volcanic ash will mean cooler temps in that area this winter? The polar bears will be so pleased-and Al Gore and the WWF will be saddened.
Don’t tell anyone, but, could it be that mother nature is responsible for global warming? Nay, no eevil conservatives to blame for something perceived as bad...
Maybe a little. The main longer-term cooling effect is from SO2 aerosols, and though these are impressive eruptions, most of the SO2 is going south and west. Unless there’s a LOT of ash (like Krakatoa), the cooling effects of the direct sun blockage don’t last long because the ash settles out fast. Even the biggest eruption on record, Tambora in 1815, caused one notably cool year subsequently (colloquially called “eighteen-hunderd and froze-to-death”; including frosts in New England in August).
2008-08-08 08:38:17
The eruption of Kasatochi continues. Current satellite data shows a continuous ash plume extending in a counterclockwise spiral for about 600 miles (950 km). The NWS warning message for the ash cloud estimates the cloud altitude at 45,000 ft (13.7 km).
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