A SUBDUCTION ANGLE OF THE PACIFIC PLATE BENEATH THE JAPAN TRENCH INFERRED FROM 3 COMPONENT GEOMAGNETIC ANOMALIES

Authors
KITAHARA A SEAMA N ISEZAKI N
Citation
A. Kitahara et al., A SUBDUCTION ANGLE OF THE PACIFIC PLATE BENEATH THE JAPAN TRENCH INFERRED FROM 3 COMPONENT GEOMAGNETIC ANOMALIES, Journal of Geomagnetism and Geoelectricity, 46(6), 1994, pp. 455-462
Citations number
9
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Journal of Geomagnetism and Geoelectricity → ACNP
ISSN journal
00221392
Volume
46
Issue
6
Year of publication
1994
Pages
455 - 462
Database
ISI
SICI code
0022-1392(1994)46:6<455:ASAOTP>2.0.ZU;2-F
Abstract
Three component geomagnetic observation was conducted along east-west tracklines over the Japan Trench in 1990. Dip and strike of the two-di mensional source body of the geomagnetic anomaly lineations, correspon ding to the upper part of the Pacific Plate, were obtained from these data. The strike was determined as N100-degrees-W-N120-degrees-W and t he dip was determined as 9-degrees, which corresponds to the subductio n angle of 11-degrees. The subduction angle is not constant but variab le along the trench which implies that the magnetic source body subduc ts with undulation.