EPS C20 Lecture Notes - Lecture 6: Kim Jong-Un, Seismic Hazard, Plate Tectonics
14 Sep 2016
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This is the 5th time the north koreans have tested a nuclear weapon in the last 10 years. Underground nuclear test (versus an atmospheric detonation) Most of them could be detected with seismometers. So everyone is upset wit kim jong un. How does the accumulated stress get released: two possibilities. Accumulated strain gets released continuously at low rate no or very little seismic hazard. Eq in alaska, hawaii, the mississippi, tennessee, east coast, Alaska: pacific plate and continental plate, major volcano bearing islands, lots of eq in the subduction zone, anchorage, turnagain heights giant slide, denali eq, alaska. Magnitude 7. 9: problem: alaska pipeline crosses the denali fault. Mississippi river: new madrid seismic zone, changed the course of the mississippi river. East coast: last ice age was around 12,000 years ago, loading. Yellowstone: yellowstone is a remnant of a huge volcano, another hotspot, grand prismatic spring, old faithful.
