Table 1. Tsunami waveform data recorded during the tsunami of the 2011 off the Pacific coast of Tohoku Earthquake.

Coastal wave gauges ^a

WS613

Kushiro Port

50.0

15:27 (−2)

U

–

–

15:42

WS602

Tomakomai Port

50.7

15:34 (−2.5)

D

15:47

–

16:04

WS202

Mutsu-Ogawara Port

43.8

15:21 (−2.5)

D

15:29

–

15:43

WS203

Hachinohe Port

27.7

15:17 (−2)

D

15:38

15:43

x

WS219

Kuji Port

49.5

15:02 (−2)

D

15:21

–

x

WS205

Sendai New Port

21.3

14:54 (−1)

D

15:33

–

x

RTK-GPS buoys ^a

GPS807

OffNorthern Iwate

125

14:56 (−2)

D

15:11

15:15

15:19

GPS804

Off Central Iwate

200

14:47

D

14:59

15:07

15:12

GPS802

Off Southern Iwate

204

14:48

D

14:57

–

15:12

GPS803

Off Northern Miyagi

160

14:47

D

14:56

–

15:14

GPS801

Off Central Miyagi

144

14:47

D

x

–

15:17

GPS806

Off Fukushima

137

14:51 (−1)

U

–

15:04

15:16

Cabled OBPGs

KPG1

Off Tokachi 1 ^b

2218

15:02 (−2)

U

–

15:05

15:12

KPG2

Off Tokachi 2 ^b

2210

15:08 (−2)

U

–

15:11

15:24

TM1

Off Kamaishi 1 ^c

1618

14:47

U

–

14:58

15:01

TM2

Off Kamaishi 2 ^c

1013

14:47

D

14:52

–

15:05

BOS02

Off Boso 2 ^d

2090

15:05 (−2)

U

–

–

15:21

BOS03

Off Boso 3 ^d

1898

15:08 (−2)

U

–

–

15:24

Tsunami buoy ^e

DART21401

SE off Etorofu Island

5.3×l0³

15:44 (−2)

U

–

–

15:53

DART buoys ^f

DART21418

NE off Tokyo

5685

15:13 (−0.5)

U

–

–

15:19

DART21413

SE off Tokyo

5822

16:02 (−1.5)

U

–

–

16:07