how many people died in the 1912 eruption of volcano mt.katmai.?
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There are no known fatalities.  The explosion could be heard 860 miles away in Ketchikan and Kodiak was evacuated.
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Visit the Hawaii Volcano Observatory at:\nhttp://hvo.wr.usgs.gov/\n\nLots of images of recent eruptions.\n\nHere is another site, that has YESTERDAY's eruption photos!!:\nhttp://www.myspy.us/cgi-bin/nph-paidmember.cgi/111011A/http/hvo.wr.usgs.gov/kilauea/update/
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Short answer: 7093 year round in Mammoth Springs, and approx 35,000 in peak season. \n\nI've been thinking about this question since you posed it. It is hard to answer correctly because the Long Valley Caldera might include every part of a potential volcanic eruption, or it might just include the area the USGS has identified as the South Deadman Creek Dome where there are tree kills from carbon dioxide. Here is the USGS map that shows the past 5000 years of eruptions:\nhttp://pubs.usgs.gov/fs/fs073-97/eruptions.html\n\nUsing this map, the population could be limited by the outline of the Long Valley Caldera as the USGS defines it. That would include Mammoth Lakes. This area's population can easily double or triple if you count tourists and skiers who are not counted in a census. The year 2000 census shows 7093 residents. The visitors bureau in Mammoth estimates peak season occupancy at 35,000 people. \n\nReviewing the area in Google Earth it is fair to say that there are almost no residences outside of Mammoth that are within the immediate area of the caldera. However, a major eruption here could affect several counties, or even several states. Past eruptions have spread ash as far as Kansas. This is the real challenge to answering your question.\n\nIf you want to look into the problem more I would suggest that you download Google Earth software here:  http://earth.google.com/\nIt is a GIS program and does include a layer for census data. Using this census data you could examine various scenarios to see what the population answer is for different areas.
68067
Fifty-seven people were killed and 200 homes, 47 bridges, 15 miles (24 km) of railways and 185 miles (300 km) of highway were destroyed. The eruption caused a massive debris avalanche, reducing its summit from 9,677 feet (2,950 m) to 8,364 feet (2,550 m) in elevation and replacing it with a mile-wide (1.5 km-wide) horseshoe-shaped crater (see geology section or 1980 eruption of Mount St. Helens for more detail). The debris avalanche from the 1980 eruption was up to 2.3 cubic kilometers (0.7 cubic miles)in volume, making it the largest in recorded history. However, the scale of it still pales in comparison to far larger debris avalanches that have occurred in the geological past elsewhere on Earth.
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51,983 — Americans died in the Pacific\nhttp://the.honoluluadvertiser.com/peaceinthepacific/numbers
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Birthplace of Stan Musial and Ken Griffey Jr\n\nOne I just found - 20 people were asphyxiated and over 7,000 were hospitalized or became ill as the result of severe air pollution over Donora
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Mount St. Helens is an active stratovolcano in Skamania County, Washington, in the Pacific Northwest region of the United States. It is located 96 miles (154 km) south of the city of Seattle and 53 miles (85 km) northeast of Portland, Oregon. The mountain, part of the Cascade Range, takes its English name from the British diplomat Lord St Helens, who was a friend of George Vancouver, an explorer who made a survey of the area in the late 18th century. Mount St. Helens is a part of the Pacific Ring of Fire that includes over 160 active volcanoes. This volcano is well known for its ash explosions and pyroclastic flows.-
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1228\nHolland: 100,000 people reputedly drowned by sea flood in Friesland.
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The eruption of Mount St. Helens, on May 18, 1980 was photographed and measured in lots of ways. The words below are from USGS websites/publications not copyrighted. But--they are excerpts and should have quotes if used in a report: \nFor weeks before the big eruption, there were earthquakes and small "phreatic explosions". By mid-April, the surface of the volcano was bulging. \nAt 0832 on May 18, a complex earthquake (M=5.1) shook the volcano, probably causing (but possibly caused by) a huge, 2.7-cubic-kilometer-landslide that in three different blocks successively removed the bulge and upper 400 meters of the volcano (Voight, et.al., 1981, 1983), leaving a 600-meter-deep crater 2 kilometers wide rim-to-rim. The landslide quickly developed into a debris avalanche that sped at 110-240 kilometers/hour for 24 kilometers down the North Fork Toutle River; arms of the avalanche entered spirit Lake, 8 kilometers from the summit, and overtopped 300-380-meter high Johnston Ridge north of the Toutle. The avalanche buried the Toutle valley to a depth of nearly 50 meters.\n\nThe landslide removed confining pressure on the cryptodome and its surrounding hydrothermal system. Juvenile gas was rapidly released from the cryptodome and superheated groundwater flashed to steam, causing a blast that exploded laterally from the collapsing north flank. The blast, called a "stone wind" by local journalists, knocked down most trees (the equivalent of about 150,000 houses) in a 600-square-kilometer area.\nSoon after the blast, a lahar rushed down the South Fork Toutle River and several streams draining the south and east flanks of the volcano. Whether water for these lahars came from snowmelt or from groundwater ejected by the eruption is hotly argued. The largest lahar, down the North Fork Toutle, did not start until early afternoon; it was fed as the debris avalanche dewatered (Janda, et.al., 1981). In addition to causing havoc along the rivers themselves, the lahars fed so much debris into the columbia River that 31 ships were stranded in upstream ports until the 4-meter-deep channel was dredged to its pre-eruption depth of 12 meters -- the first in a series of similar dredgings to maintain Portland (Oregon) as a seaport.\n\nA strong, vertically directed explosion of ash and steam began very shortly after the lateral blast. The resulting eruptive column rose very quickly. In less than 10 minutes, the ash column reached an altitude of more than 12 miles and began to expand into a characteristic mushroom-shaped ash cloud. Near the volcano, the swirling ash particles in the atmosphere generated lightning, which in turn started many forest fires. As the eruption roared on, the major part of the ash cloud drifted downwind in an east-northeasterly direction, although ash that rose above the high-speed (Jet-stream) winds followed other paths determined by complex wind directions.\n\nIf you go to one of the USGS websites below, they will have links to other USGS sites talking about violent volcanoes.
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Lahars - they kill far more people than any other volcanic hazard.
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I have some stats on the major eruptions in human history\n1980- Mount St. Helens killed 63 people and also stripped 10 kilometers of soil and life.\n\n1883- Krakatoa kille 35,000 people when it explosed with the force of several hydrogen boms.\n\n79- Vesuvius, the entire city of Pompeii was covered in 5 to 8 meters of ash.\n\n3600 years ago- Thera- 3 to 4 times more material erupted than Krakatoa.  May have caused the Minoan civilization extinction.
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http://www.fs.fed.us/gpnf/volcanocams/msh/
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Everest although no-one can say for sure.  On 8th June 1924 it's possible that George Mallory and Andrew Irvine reached the summit, this was 29 years prior to Hilary and Norgay.\n\nMallory and Irvine died on the mountain and were last observed very close to the summit before cloud obscured them.  No-one knows if they died on their way up or if they made it to the summit and died on the way down.
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http://www.volcano.si.edu/reports/usgs/index.cfm
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Enumerating (or providing a set number of) the countries impacted by the circum-Pacific volcanic belt (more commonly known as the Ring of Fire) would be very hard to do.\n\nThis volcanic belt is absolutely massive. It affects 5 of the 7 continents:  North America, South America, Asia, Australia, and Antarctica.\n\nI hope the website reference that I have provided is of some use to you.  The pictures may be a good starting point for counting the affected countries.
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Go here:\n\nhttp://www.fema.gov/kids/volcano.htm
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Effects\nThe combined effects of pyroclastic flows, volcanic ashes and tsunamis had disastrous results in the region. There were no survivors from 3,000 people located at the island of Sebesi, about 13 km from Krakatoa. Pyroclastic flows killed around 1,000 people at Ketimbang on the coast of Sumatra some 40 km north from Krakatoa. The official death toll recorded by the Dutch authorities was 36,417 and many settlements were destroyed, including Teluk Betung and Ketimbang in Sumatra, and Sirik and Semarang in Java. The areas of Banten on Java and the Lampong on Sumatra were devastated. There are numerous documented reports of groups of human skeletons floating across the Indian Ocean on rafts of volcanic pumice and washing up on the east coast of Africa, up to a year after the eruption. Some land on Java was never repopulated; it reverted to jungle and is now the Ujung Kulon National Park.\n\nRead more --> http://en.wikipedia.org/wiki/Krakatoa#Effects