Magnitude: 8.6M
Time: 03-09-1957 T14:22:31
Country: USA

ALASKA

This earthquake was recorded at a focal depth of 33km below the ground in Usa on 03-09-1957 T14:22:31, where it released a sizeable amount of seismic energy and reached a magnitude of 8.6 on the richter scale. Considering this quake occurred 33km under the surface, it is best classified as a deep geologic event. An earthquake of this magnitude would likely be causing destruction to well-built wooden structures; most masonry and frame structures with foundations would be destroyed. Expect rails to be bent, bridges detroyed, and loss of life.
More events from USA




Surface Geology

Underlying geological composition for the surrounding area.

Alaska Peninsula and Aleutian Islands - porphyry copper
Tertiary felsic to intermediate composition intrusions of the Alaska Peninsula and Aleutian Islands
Pacific Margin - porphyry copper
Cretaceous through middle Tertiary volcanic and intrusive rocks representing a series of continental- and island-arc systems accreted and superimposed onto the paleomargin of northeast Asia.

Surface Lithology

w - None
Water

Related USGS Publications

70159748 - 2016 - Unusually large tsunamis frequent a currently creeping part of the Aleutian megathrust
70143609 - 2015 - Geomorphic Consequences of Volcanic Eruptions in Alaska: A Review



Latest Earthquake Events

Recent Earthquake activity from around the globe.



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Earthquake Measurement
earthquake scale

Earthquake Stats
region_code 150
focal_depth 33
total_deaths 2
total_deaths_description 1
year 1957
eq_mag_ms 9.1
eq_mag_mw 8.6
id 4116
location_name ALASKA
total_damage_description 3
damage_description 1
eq_primary 8.6
state AK
time 03-09-1957 T14:22:31
latitude 51.292
total_injuries 1
total_injuries_description 1
longitude -175.629
country USA

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02-28-1979 T21:27:08
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ALASKA:SLANA,MENTASTALAKE,FAIRBANKS
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