![The
2011
earthquake
off
the
Pacific
coast
of
Tōhoku
(東北地方太平洋沖地震
Tōhoku-‐chihō
Taiheiyō
Oki
Jishin?)
was
a
magnitude
9.0
(Mw)
undersea
megathrust
earthquake
off
the
coast
of
Japan
that
occurred
at
14:46
JST
(05:46
UTC)
on
Friday
11
March
2011,[2][3][8]
with
the
epicentre
approximately
70
kilometres
(43
mi)
east
of
the
Oshika
Peninsula
of
Tōhoku
and
the
hypocenter
at
an
underwater
depth
of
approximately
30
km
(19
mi).[2][9]
The
earthquake
is
also
often
referred
to
in
Japan
as
the
Great
East
Japan
Earthquake
(東日本大震災
Higashi
nihon
daishinsai?)[10][11][12][fn
1]
and
also
known
as
the
2011
Tohoku
earthquake,[13]
and
the
3.11
Earthquake.
It
was
the
most
powerful
earthquake
ever
recorded
to
have
hit
Japan,
and
the
fourth
most
powerful
earthquake
in
the
world
since
modern
record-‐keeping
began
in
1900.[8][14][15]
The
earthquake
triggered
powerful
tsunami
waves
that
reached
heights
of
up
to
40.5
metres
(133
ft)
in
Miyako
in
Tōhoku's
Iwate
Prefecture,[16][17]
and
which,
in
the
Sendai
area,
travelled
up
to
10
km
(6
mi)
inland.[18]
The
earthquake
moved
Honshu
(the
main
island
of
Japan)
2.4
m
(8
ft)
east
and
shifted
the
Earth
on
its
axis
by
estimates
of
between
10
cm
(4
in)
and
25
cm
(10
in),[19][20][21]
and
generated
sound
waves
detected
by
the
low-‐
orbiting
GOCE
satellite.[22]](https://image.slidesharecdn.com/randomtext-150122185815-conversion-gate02/85/Random-text-1-320.jpg)
Random text
- 1. The 2011 earthquake off the Pacific coast of Tōhoku (東北地方太平洋沖地震 Tōhoku-‐chihō Taiheiyō Oki Jishin?) was a magnitude 9.0 (Mw) undersea megathrust earthquake off the coast of Japan that occurred at 14:46 JST (05:46 UTC) on Friday 11 March 2011,[2][3][8] with the epicentre approximately 70 kilometres (43 mi) east of the Oshika Peninsula of Tōhoku and the hypocenter at an underwater depth of approximately 30 km (19 mi).[2][9] The earthquake is also often referred to in Japan as the Great East Japan Earthquake (東日本大震災 Higashi nihon daishinsai?)[10][11][12][fn 1] and also known as the 2011 Tohoku earthquake,[13] and the 3.11 Earthquake. It was the most powerful earthquake ever recorded to have hit Japan, and the fourth most powerful earthquake in the world since modern record-‐keeping began in 1900.[8][14][15] The earthquake triggered powerful tsunami waves that reached heights of up to 40.5 metres (133 ft) in Miyako in Tōhoku's Iwate Prefecture,[16][17] and which, in the Sendai area, travelled up to 10 km (6 mi) inland.[18] The earthquake moved Honshu (the main island of Japan) 2.4 m (8 ft) east and shifted the Earth on its axis by estimates of between 10 cm (4 in) and 25 cm (10 in),[19][20][21] and generated sound waves detected by the low-‐ orbiting GOCE satellite.[22]