Interplate quasi-static slip off Sanriku, NE Japan, estimated from repeating earthquakes

被引：119

作者：

Uchida, N ^{[1
]}

Matsuzawa, T

Hasegawa, A

Igarashi, T

机构：

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

[2] Univ Tokyo, Earthquake Res Inst, Bunkyo Ku, Tokyo 1130032, Japan

来源：

GEOPHYSICAL RESEARCH LETTERS | 2003年 / 30卷 / 15期

关键词：

D O I：

10.1029/2003GL017452

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Space-time distribution of quasi-static slip on the plate boundary off Sanriku, northeastern (NE) Japan, was estimated by using small repeating earthquakes. We found 2509 repeating earthquakes occurring on the plate boundary for the last 17 years. Based on the interpretation that these events are caused by repeating slips of small asperities surrounded by stable sliding area, we regarded these repeating events as creepmeters embedded on the plate boundary. The results show that deeper portions of the plate boundary are sliding almost stably and earthquakes with magnitudes more than 6 are accompanied by quasi-static slips in the surrounding areas.

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页码：7 / 1

页数：4

相关论文

共 17 条

[1]

Ellsworth W.L., 1995, URBAN DISASTER MITIG

[2] MOMENT MAGNITUDE SCALE [J].

HANKS, TC ;

KANAMORI, H .

JOURNAL OF GEOPHYSICAL RESEARCH, 1979, 84 (NB5) :2348-2350

[3] Silent fault slip following an interplate thrust earthquake at the Japan Trench [J].

Heki, K ;

Miyazaki, S ;

Tsuji, H .

NATURE, 1997, 386 (6625) :595-598

[4] Aftershock distribution of the 1994 Sanriku-oki earthquake (Mw 7.7) revealed by ocean bottom seismographic observation [J].

Hino, R ;

Ito, S ;

Shiobara, H ;

Shimamura, H ;

Sato, T ;

Kanazawa, T ;

Kasahara, J ;

Hasegawa, A .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2000, 105 (B9) :21697-21710

[5] THERMAL CONSTRAINTS ON THE ZONE OF MAJOR THRUST EARTHQUAKE FAILURE - THE CASCADIA SUBDUCTION ZONE [J].

HYNDMAN, RD ;

WANG, K .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 1993, 98 (B2) :2039-2060

[6] Repeating earthquakes and interplate aseismic slip in the northeastern Japan subduction zone [J].

Igarashi, T ;

Matsuzawa, T ;

Hasegawa, A .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2003, 108 (B5)

[7] Spatial distribution of focal mechanisms for interplate and intraplate earthquakes associated with the subducting Pacific plate beneath the northeastern Japan arc: A triple-planed deep seismic zone [J].

Igarashi, T ;

Matsuzawa, T ;

Umino, N ;

Hasegawa, A .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2001, 106 (B2) :2177-2191

[8] Space-time distribution of interplate moment release including slow earthquakes and the seismo-geodetic coupling in the Sanriku-oki region along the Japan trench [J].

Kawasaki, I ;

Asai, Y ;

Tamura, Y .

TECTONOPHYSICS, 2001, 330 (3-4) :267-283

[9] Characteristic small-earthquake sequence off Sanriku, northeastern Honshu, Japan [J].

Matsuzawa, T ;

Igarashi, T ;

Hasegawa, A .

GEOPHYSICAL RESEARCH LETTERS, 2002, 29 (11) :38-1

[10]

Nadeau RM, 1997, B SEISMOL SOC AM, V87, P1463