Posted in General and tagged Earthquakes, Swarm earthquakes, Washington by Roger with no comments yet.
There has been a swarm of 39 earthquakes including a 4.5 on Mauna Kea in the last 24 hours.
Posted in General and tagged Earthquakes, Hawaii by Roger with no comments yet.
Geologists are puzzled by thousands of Magnitude 1 “ice quakes” believed to be at the base of — most likely the Emmons Glacier — on Mount Rainier. There were similar quakes in 1990 and 1998, but these have lasted long. Scientists speculate it may be water. Unlike regular earthquakes which come on suddenly the ice quakes build and then subside. They say that the quakes are not related to the recent slab avalanche that killed a climber. That quake was blamed on weather (recent cool weather brought on large late season snows).
Posted in Uncategorized and tagged Earthquakes, Washington by Roger with no comments yet.
The Boise Center Aerospace Laboratory at Idaho State University has this video combining still photos and google earth animations about the the Borah earthquake.
Posted in Uncategorized and tagged Borah earthquake, Earthquakes, Idaho by Roger with no comments yet.
Mount Hood reports a series of swarm earthquakes with the biggest so far being 3.0 on May 14. The last swarm was July 2006 which peaked at 2.1 quake. In 2002 more than 200 quakes including a 4.5 hit the mountain. Scientists do not believe it is a sign that of the mountain waking up like it did in the 1790s. Here’s a list of recent quakes.
Posted in Uncategorized and tagged Earthquakes, Oregon, Swarm earthquakes by Roger with no comments yet.
Sitnews reports that the 9.0 Sumatra earthquake that touched off the Boxing Day Tidal initiated 12 tiny earthquakes on Mount Wrangell, the 14,163 foot volcano in Alaska. Authorities believe this would be the longest documented reported of related quakes (7,000 miles). Wrangell heated up after the Good Friday 9.2 Alaska Quake in 1964 but ironically the 7.9 Denali fault quake in 2002 caused the mountain to calm down. Other Alaska volcanoes were not affected by the 2004 quake.
Posted in Uncategorized and tagged Alaska, Earthquakes, Phenomenon by Roger with .
The Boise Weekly reports Idaho has received its first application in more than 10 years for a new cyanidation gold mining facility. Desert Mineral MiningÃ¢â‚¬â„¢s proposed small facility is located a 15-mile crowÃ¢â‚¬â„¢s flight from downtown Boise off of Blacks Creek Road in northwest Elmore County. The article notes that 90 percent of the gold mined in the U.S.uses cyanide. The article criticizes the application because it is not even mention the earthquake hazard of the Borah 7.3 quake in 1983.
Posted in Uncategorized and tagged Earthquakes, Idaho, Phenomenon by Roger with .
The Honolulu Advertiser reports that there were 13,000 earthquakes were recorded in 2004 by the U.S. Geological Survey’s Hawaiian Volcano Observatory, only three were greater than magnitude 4. The average is 10,000 but Observatory seismologist Paul Okubo said there were fewer moderate to large quakes in the past year. There were 4,228 quakes were magnitude 1.5 or greater, and only 79 were big enough to have been felt by Big Island residents. The three largest quakes of 2004 Ã¢â‚¬â€ none greater than 4.5 Ã¢â‚¬â€ occurred beneath Kilauea on Feb. 5, Oct. 11 and Oct. 12. The principal source of earthquakes are Kilauea, Mauna Loa and Lo’ihi, all active volcanoes. Lo’ihi, about 6 miles south of the Big Island and 2,000 feet deep, is the youngest. It is expected to rise above sea level sometime in the next few thousand years. The most recent big earthquake in Hawai’i occurred in 1975 when a magnitude 7.2 temblor shook the Big Island, causing a tsunami that killed two campers in Halape, Puna.
The article was prompted by a 3.6 quake this week between Waiki’i and the Mauna Kea summit at a depth of 13 miles. Books on earthquakes.
Posted in Uncategorized and tagged Earthquakes, Hawaii, Phenomenon by Roger with .
An AP article published in the Billings Gazette and other publications notes that most of Yellowstone’s earthquakes occur in late spring and early summer. The study by Lizet Christiansen of the U.S. Geological Survey suspects that snow melt is responsible. Most of the earthquakes that shake Yellowstone National Park happen during the busiest time of year – but hardly anyone notices. The study analyzed earthquakes between 1984 and 2004 at Yellowstone, the Long Valley caldera in eastern California, and Mount Lassen, Mount Hood, Mount St. Helens and Mount Rainier.
Posted in Uncategorized and tagged Earthquakes, Phenomenon, Wyoming by Roger with .