M 9.1 - 2011 Great Tohoku Earthquake, Japan

2011-03-11 05:46:24 (UTC)
38.297°N 142.373°E
29.0 km depth

ShakeMap

Contributed by

last updated 2020-07-07 22:42:26 (UTC)

The data below are the most preferred data available
The data below have NOT been reviewed by a scientist.

Version 1

Processing

Output

Ground Motion/Intensity Information
Type	Max Value in Grid	Max Value on Land	Bias
SA(0.3 s)	2.83 g	2.314 g	0.223
SA(1.0 s)	1.238 g	1.238 g	-0.008
PGV	4.525 cms	4.43 cms	0.038
SA(3.0 s)	0.245 g	0.245 g	-0.124
PGA	1.213 g	1.008 g	0.256
Intensity	8.214 intensity	8.18 intensity	-0.043

Map Information
Type	Latitude	Longitude
Number of points	450	527
Grid spacing	0.0333333 degrees	0.0333333 degrees
Span	14.967 degrees	17.517 degrees
Min	30.133 degrees	134.733 degrees
Max	45.1 degrees	152.25 degrees

Input

Ground Motion Models