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Titolo:
Lithospheric structure of Philippine Sea Plate near the western end of Ryukyu subduction zone and some of its tectonic effects
Autore:
Wang, CS; Chuang, SW; Li, ML; Cheng, WB;
Indirizzi:
Natl Taiwan Ocean Univ, Inst Appl Geophys, Keelung 20224, Taiwan Natl Taiwan Ocean Univ Keelung Taiwan 20224 ophys, Keelung 20224, Taiwan Jin Wen Inst Tectnol, Dept Visual Commun Design, Taipei, Taiwan Jin Wen Inst Tectnol Taipei Taiwan Visual Commun Design, Taipei, Taiwan
Titolo Testata:
TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
, , anno: 2001, supplemento:, S
pagine: 287 - 304
SICI:
1017-0839(200105):<287:LSOPSP>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
TAIWAN AREA; OKINAWA TROUGH; ARC-CONTINENT; MODEL; EVOLUTION; COLLISION;
Keywords:
structure of the Philippine Sea Plate; northern Taiwan area; seismicity; morphology; wave attenuation factor;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Wang, CS Natl Taiwan Ocean Univ, Inst Appl Geophys, Keelung 20224, Taiwan Natl Taiwan Ocean Univ Keelung Taiwan 20224 elung 20224, Taiwan
Citazione:
C.S. Wang et al., "Lithospheric structure of Philippine Sea Plate near the western end of Ryukyu subduction zone and some of its tectonic effects", TERR ATM OC, 2001, pp. 287-304

Abstract

The Ryukyu subduction zone, comprised of the Ryukyu trench, the Ryukyu areand the Okinawa trough, extends between southern Japan and northern Taiwan. This subduction zone is produced by the northwestward subduction of the Philippine ea plate beneath the Eurasian plate along the Ryukyu trench. The motion of the Philippine Sea plate is, however, impeded at its northwesterncorner by the island of Taiwan, which is reflected in the complicated structure of the Philippine Sea plate at the western end of the Ryukyu subduction zone. Using seismicity, as well as other geophysical and geological datain the Taiwan region, we have investigated the lithospheric structure of the Philippine Sea plate beneath the westhern end of the Ryukyu subduction zone and its tectonic effects. Although the Philippine Sea plate moves northwestward in general, at its northwestern corner the direction of subduction changes from the northwest to the north. The lithosphere of this northwestern corner of the plate underthrusts and extends westward beneath the island of Taiwan. A western boundary of the lithosphere exists beneath Taiwan. The boundary lies almost alongthe 121.degreesE meridian line. The boundary is migrating westward at a rate of about 6 cm/y along with the movement of the Philippine Sea plate. Thewestward migration of the lithospheric boundary of the plate causes the westward extension of the Okinawa trough, which lags behind the former by about 600,000 years (similar to 35 km). The initial stage of the formation of the Okinawa trough, in turn, put the whole northern Taiwan area under tensional stress.

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Documento generato il 18/11/18 alle ore 05:31:33