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冲绳海槽至马里亚纳海沟重力异常和地壳结构的初步研究
王述功1, 高 仰1
国家海洋局第一海洋研究所
摘要:
根据我们实测的水深、重力连续剖面资料,计算了自东海至北斐济盆地的地壳厚度。本文旨在对冲绳海槽至马里亚纳海沟的重力异常和地壳结构进行初步的研究。该地段位于太平洋板块俯冲带以西,构造活动十分复杂、剧烈,并含有多种类型的地壳结构。
关键词:  重力异常  冲绳海槽  马里亚纳海沟  地壳结构
DOI：
分类号:
基金项目:
PRELIMINARY STUDY OF THE GRAVITY ANOMALY AND CRUSTAL STRUCTURES FROM OKINAWA TROUGH TO MARIANA TRENCH
Abstract:
The crustal thickness from East China Sea to North Fiji Basin was calculated on the basis of the actually measured water depth and the gravimetric data from continuous profiling. This paper aims to preliminarily discuss the gravity anomaly and the crustal structures from Okinawa Trongh to Mariana Trench (Fig. 1). Because this segment is situated to the west of Benioff Zone of Pacific Oceanic Plate, its tectonic movement is quite violent and complicated. This segment also includes a variety of crustal structures that demands further study because of its far reaching importance.
Key words:  Gravity anomaly  Okinawa Trough  Mariana Trench  Crustal structures
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