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1957 Andreanof Islands earthquake
The
1957 Andreanof Islands earthquake
was a magnitude 8.6
M
W
(8.3
M
s
)
megathrust earthquake
that took place on March 9, 1957. It was centered at in the
Alaska-Aleutian megathrust
, south of the
Andreanof Islands
group of the
Aleutian Islands
in the U.S. state of
Alaska
.
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