2007 Andreanof Islands earthquake
Encyclopedia
The 2007 Andreanof Islands Earthquake was a magnitude
7.2 earthquake
that took place on December 19, 2007, at 09:30:30 UTC. It was centered at 51.495°N 179.473°W, 200 km (124.3 mi) west of Adak
in the Andreanof Islands
group of the Aleutian Islands in the U.S. state
of Alaska.
A tsunami warning was issued. There were no reports of an actual tsunami or damage from the earthquake itself.
Moment magnitude scale
The moment magnitude scale is used by seismologists to measure the size of earthquakes in terms of the energy released. The magnitude is based on the seismic moment of the earthquake, which is equal to the rigidity of the Earth multiplied by the average amount of slip on the fault and the size of...
7.2 earthquake
Earthquake
An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time...
that took place on December 19, 2007, at 09:30:30 UTC. It was centered at 51.495°N 179.473°W, 200 km (124.3 mi) west of Adak
Adak, Alaska
Adak , formerly Adak Station, is a city in the Aleutians West Census Area, Alaska, United States. At the 2010 census the population was 326. It is the westernmost municipality in the United States and the southernmost city in Alaska. The city is the former location of the Adak Army Base and Adak...
in the Andreanof Islands
Andreanof Islands
The Andreanof Islands are a group of islands in the Aleutian Islands in southwest Alaska. They are located between Amchitka Pass and the Rat Islands group to the west, and Amukta Pass and the Islands of Four Mountains group to the east, at about 52° North and 172°57' to 179°09' West. The islands...
group of the Aleutian Islands in the U.S. state
U.S. state
A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...
of Alaska.
A tsunami warning was issued. There were no reports of an actual tsunami or damage from the earthquake itself.