a. strain buildup only b. location of foci c. magnitude of P-waves [pic] d. reoccurrence rates of earthquakes in an area and the rate of strain buildup 2. What are most earthquakes associated with? a. rift valleys b. mid-ocean ridges c. divergent plate boundaries [pic] d. plate boundaries 3. At what point in the graph would a rock be permanently deformed? [pic] a. at the start of the stress [pic] b. past
Haiti Earthquake, January 2010 Terrah-Leigh Ann Pietersen On the 12th of January, 2010, an earthquake struck Haiti which measured up to 7.0 on the Richter scale. This caused an estimate of 230, 000 to 316, and 000 to have died. The earthquake was produced form the fault line that separates the Caribbean tectonic plate from the North American plate. The fault line ran from east to west. It was miles away from the capital called Port au Prince.
Trevor Palmer 4/30/14 5th Period 1960 Chilean & Japanese Tsunami Natural disasters can happen at any moment, ranging from the most deadly to just minor natural disaster, but on this day in May of 1960 something happened that will never be forgotten. They say it was the largest earthquake that ever happened off the coast of Chile and because of that a tsunami happened also. According to the Natural Disaster Organization “the earthquake hit at 7:11 pm approximately 100 miles off the coast of Chile”. The shock of the earthquake had a large magnitude of at most 9.5, this goes without saying that there were warnings of this going to happen the day before. The deadly earthquake caused a large amount of damage and death in the country and in the pacific coastal areas.
Geologic Summary. The high, isolated massif of Shiveluch volcano (also spelled Sheveluch) rises above the lowlands NNE of the Kliuchevskaya volcano group and forms one of Kamchatka's largest and most active volcanoes. The currently active Molodoy Shiveluch lava-dome complex was constructed during the Holocene within a large breached caldera formed by collapse of the massive late-Pleistocene Strary Shiveluch volcano. At least 60 large eruptions of Shiveluch have occurred during the Holocene, making it the most vigorous andesitic volcano of the Kuril-Kamchatka arc. Frequent collapses of lava-dome complexes, most recently in 1964, have produced large debris avalanches whose deposits cover much of the floor of the breached caldera.
8 H October 26, 2012 1886 Charleston Earthquake In Charleston August 31, 1886, a devastating earthquake shocked millions throughout the country. Not only was this earthquake reported in South Carolina, but in distant places such as Boston, Massachusetts, Milwaukee, Wisconsin, Chicago, Illinois, Cuba, Bermuda, and many more. Why so many places? The earthquake recorded a 7.4 on the Richter scale. This tells us that it’s a powerful earthquake, reaching and being felt by farther away places.
How the 1906 Earthquake Marked the Dawn of Understanding Earthquakes And the Study of the San Andreas Fault in California On the morning of April 18, 1906 at approximately 5:12 in the morning, the city of San Francisco was awoken to one of the most devastating earthquakes in the history of California. The earthquake and subsequent fires caused an estimated 3,000 deaths and over half of the city’s residents were left homeless, and the once wealthiest and most important cities on the Pacific Coast was turned to ashes and ruins (Zoback). Before 1906, little was known or understood about earthquakes, how and where they occurred, or the risk they posed. Although the 1906 earthquake manifested a groundbreaking and tragic event in California,
A magnitude 4.2 earthquake on March 20, 1980 preceded by several smaller earthquakes beginning as early as March 16, was the first substantial indication of Mt. Saint Helens awakening from its 123-year slumber. With a thunderous explosion, widely heard throughout the region around noon on March 27, Mt. Saint Helens began to spew ash and steam, marking the first significant eruption in the conterminous United States since that of Lassen Peak in California. The crown of the ash column rose approximately 6,000 feet above the volcano.
7. The most recent major eruption of Mount Saint Helens was May 18, 1980. The eruption was so large, the whole north face of the volcano slid away. I can tell it was the north face, because the compass points north and that is where the face slid away. This eruption was an explosive eruption.
The Science Legacy of Mount St. Helens May 4, 2010 Mount St. Helens energized the scientific community • It was the first large explosive eruption in the conterminous United States since the advent of modern volcanology. An aura of excitement and concern for citizen safety swept through the volcanological community, motivating scientists to study in depth this easily viewed and accessible volcano. • The eruption was and its effects were photographed by countless citizens from numerous vantage points. This allowed scientists to study observed phenomena and to recognize the origin of fresh volcanic deposits. • Mount St. Helens is a volcanologist’s ideal laboratory.
At approximately 5:12 a.m. on Wednesday, April 18, 1906 the city of San Francisco was struck by a 7.9 magnitude earthquake! The main shock occurred offshore about 2 miles out. The earthquake happened along the San Andreas Fault line, and the shock was felt from Oregon to Los Angeles. The earthquake was extremely catastrophic which also resulted in fires. This earthquake is remembered as one of the most destructive natural disasters next to the Galveston hurricane of 1900, and hurricane Katrina of 2005.