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서태평양에 위치한 해저산들의 3-D flexure 모델링: 무한지판 모델

Three-dimensional Flexure Modeling by Seamount Loading in the Western Pacific: Infinite Plate Model

이태국|문재운|박정기|이기화|지상범
한국해양과학기술원 (Korea Institute of Ocean Science & Technology)|2005.03|Ocean and Polar Research|제27권 제1호|pp. 35-44

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참고문헌

키워드

오가사와라 균열대3-D 휨 모델링무한지판 모델탄성두께지판의 재가열Ogasawara Fracture Zonethree-dimensional flexure modelinginfinite plate modelelastic thicknessrejuvenation of lithosphere
주제분류해양학

초록

Abstract

The bathymetric and gravity data were obtained in 2001 and 2003 during a survey of seamounts in the northwest of the Marshall Islands, western Pacific. The study areas are located in the Pigafetta Basin which is the oldest part of the Pacific plate and in the Ogasawara Fracture Zone which formed from the spreading ridge between the Izanagi and Pacific plates in the Jurassic. The densities of seamounts and the elastic thickness values of the lithosphere are calculated by using three-dimensional flexure modeling considering the constant sediment layer in the infinite plate model. Very low elastic thickness values (5 km), relatively young seamounts, and old lithosphere in the east study area suggest the possibility of the rejuvenation of lithosphere by widespread volcanisms, whereas the elastic thickness values (15 km), relatively old seamounts, and young lithosphere of the west study area are suitable for a simple cooling plate model of 300-600oC isotherm. The gravity residuals of OSM6-1 and OSM6-2 suggest the possibility of different load density or elastic thickness. Relatively older OSM6-2 formed on the younger lithosphere with relatively thin elastic thickness, while younger OSM6-1 on the older lithosphere with relatively thick elastic thickness.

참고문헌 (31)

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서태평양 Lomilik 해저산 퇴적환경 특성김종욱, 남상헌, 문재운, 박정기, 오재경, 이현복, 지상범한국해양과학기술원 · Ocean and Polar Research2004 · 제26권 제2호남부 필리핀해 Ayu Trough에서의 지형과 선상지구물리 관측: 지각 확장과 구조 고찰이상묵, 정미숙한국해양과학기술원 · Ocean and Polar Research2002 · 제24권 제3호Total Field Magnetic Analysis of Nine Seamounts Northwest of the Marshall Islands, Western Pacific문재운, 이기화, Sang-Mook Lee, Tae-Gook Lee한국해양과학기술원 · Ocean and Polar Research2002 · 제24권 제3호자기이상 역산에 의한 마샬제도 북서쪽 세 해저산의 고지자기 해석고영탁, 김현섭, 문재운, 이기화, 이태국, 정미숙한국해양과학기술원 · Ocean and Polar Research2004 · 제26권 제4호Boussinesq 방정식을 이용한 동해지진해일 수치실험 연구김성대, 박수영, 정경태한국해양과학기술원 · Ocean and Polar Research2007 · 제29권 제1호지자기이상을 이용한 동해 독도 및 독도주변의 구조와 성인에 관한 고찰권문상, 김창환, 민경덕, 박찬홍, 심재설, 오순복, 최성호, 한현철한국해양과학기술원 · Ocean and Polar Research2002 · 제24권 제4호

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