Micro-tsunami from a local interplate earthquake detected by cabled offshore tsunami observation in northeastern Japan

被引：47

作者：

Hino, R ^{[1
]}

Tanioka, Y

Kanazawa, T

Sakai, S

Nishino, M

Suyehiro, K

机构：

[1] Tohoku Univ, Res Ctr Predict Earthquakes & Volcan Erupt, Grad Sch Sci, Aoba Ku, Sendai, Miyagi 9808578, Japan

[2] Met Res Inst, Tsukuba, Ibaraki 3050052, Japan

[3] Univ Tokyo, Earthquake Res Inst, Tokyo 1130032, Japan

[4] Japan Marine Sci & Technol Ctr, Yokosuka, Kanagawa 2370061, Japan

来源：

GEOPHYSICAL RESEARCH LETTERS | 2001年 / 28卷 / 18期

关键词：

D O I：

10.1029/2001GL013297

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A micro tsunami from an interplate earthquake (M-w 6.1) was observed in 1998 on ocean bottom tsunami meters (OBTMs) deployed east off the northeastern Japan. The offshore tsunami data without complex distortions due to the coastal topography enable us to estimate reliable tsunami source parameters. The observed amplitude was about 1.5 cm at epicentral distance less than 100 km. We numerically computed the tsunami waveform by solving the linear Boussinesq equations. The observed tsunami waveforms are well explained by synthetic waveforms assuming the fault width of 10 - 15 km. The depth of the fault is estimated as 5 - 10 km below the seafloor, which is in good agreement with the location of the plate boundary defined by previous seismic studies.

引用

页码：3533 / 3536

页数：4

共 16 条

[1]

Dziewonski AM, 1999, PHYS EARTH PLANET IN, V112, P11, DOI 10.1016/S0031-9201(98)00157-5

[2] A real-time observation network of ocean-bottom-seismometers deployed at the Sagami trough subduction zone, central Japan [J].

Eguchi, T ;

Fujinawa, Y ;

Fujita, E ;

Iwasaki, SI ;

Watabe, I ;

Fujiwara, H .

MARINE GEOPHYSICAL RESEARCHES, 1998, 20 (02) :73-94

[3]

Gonzalez FI., 1991, TSUNAMI HAZARD, P119, DOI [10.1785/0120080040, DOI 10.1785/0120080040]

[4] Interplate seismic activity near the northern Japan Trench deduced from ocean bottom and land-based seismic observations [J].

Hino, R ;

Kanazawa, T ;

Hasegawa, A .

PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 1996, 93 (1-2) :37-52

[5]

Kajiura K., 1963, B EARTHQ RES I TOKYO, V41, P535

[6]

MATSUZAWA T, 1999, TOHOKU J NATUR DISAS, V35, P49

[7] SPATIAL-DISTRIBUTION OF EARTHQUAKES OFF SANRIKU, NORTHEASTERN JAPAN, IN 1989 DETERMINED BY OCEAN-BOTTOM AND LAND-BASED OBSERVATION [J].

NISHIZAWA, A ;

KONO, T ;

HASEGAWA, A ;

HIRASAWA, T ;

KANAZAWA, T ;

IWASAKI, T .

JOURNAL OF PHYSICS OF THE EARTH, 1990, 38 (05) :347-360

[8]

OKADA M, 1991, P 2 UJNR TSUN WORKSH, P219

[9]

OKADA Y, 1985, B SEISMOL SOC AM, V75, P1135

[10] TSUNAMI FROM THE MARIANA EARTHQUAKE OF APRIL 5, 1990 - ITS ABNORMAL PROPAGATION AND IMPLICATIONS FOR TSUNAMI POTENTIAL FROM OUTER-RISE EARTHQUAKES [J].

SATAKE, K ;

YOSHIDA, Y ;

ABE, K .

GEOPHYSICAL RESEARCH LETTERS, 1992, 19 (03) :301-304

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