DOUBLE SEISMIC ZONE FOR DEEP EARTHQUAKES IN THE IZU-BONIN SUBDUCTION ZONE

被引：50

作者：

IIDAKA, T ^{[1
]}

FURUKAWA, Y ^{[1
]}

机构：

[1] KYOTO UNIV,FAC SCI,DEPT GEOL & MINERAL,KYOTO 606,JAPAN

来源：

SCIENCE | 1994年 / 263卷 / 5150期

关键词：

D O I：

10.1126/science.263.5150.1116

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A double seismic zone for deep earthquakes was found in the Izu-Bonin region. An analysis of SP-converted phases confirms that the deep seismic zone consists of two layers separated by approximately 20 kilometers. Numerical modeling of the thermal structure implies that the hypocenters are located along isotherms of 500-degrees to 550-degrees-C, which is consistent with the hypothesis that deep earthquakes result from the phase transition of metastable olivine to a high-pressure phase in the subducting slab.

引用

页码：1116 / 1118

页数：3

共 34 条

[1]

BRIDGMAN PW, 1945, AM J SCI, V243A, P90

[2]

Cerveny V, 1983, PROGRAM PACKAGE SEIS

[3] MAGMATIC PROCESSES UNDER ARCS AND FORMATION OF THE VOLCANIC FRONT [J].

FURUKAWA, Y .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 1993, 98 (B5) :8309-8319

[4] ANTICRACK-ASSOCIATED FAULTING AT VERY HIGH-PRESSURE IN NATURAL OLIVINE [J].

GREEN, HW ;

YOUNG, TE ;

WALKER, D ;

SCHOLZ, CH .

NATURE, 1990, 348 (6303) :720-722

[5]

Griggs D., 1960, GEOL SOC AM MEM, V79, P347, DOI DOI 10.1130/MEM79

[6]

GRIGGS DT, 1972, NATURE SOLID EARTH, P361

[7]

GRIGGS DT, 1969, PROPERTIES MATTER

[8] PLASTIC INSTABILITIES - IMPLICATIONS FOR THE ORIGIN OF INTERMEDIATE AND DEEP-FOCUS EARTHQUAKES [J].

HOBBS, BE ;

ORD, A .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1988, 93 (B9) :10521-10540

[9]

IIDAKA T, 1992, NATURE, V356, P593, DOI 10.1038/356593a0

[10] SEISMIC VELOCITY STRUCTURE OF THE SUBDUCTING PACIFIC PLATE IN THE IZU-BONIN REGION [J].

IIDAKA, T ;

MIZOUE, M ;

SUYEHIRO, K .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 1992, 97 (B11) :15307-15319

← 1 2 3 4 →