摘要
根据冲绳海槽地区实测海底热流资料,结合该地区最新的地质地球物理调查研究成果,分析了冲绳海槽地热研究中的几个问题,认为(1)相对于其它边缘海盆地,冲绳海槽是一个高热流异常区,同时具有热流值极不均匀的特点;(2)冲绳海槽的壳幔热流比值介于大陆地壳与大洋地壳之间,具有过渡性地壳的性质;(3)冲绳海槽强烈的岩浆作用是造成局部高热流的重要原因;(4)广泛分布的海底热液活动造成了局部热流值强烈的高低变化。
Based on the heat flow data and the results of recent geological and geophysical survey and study in the Okinawa Trough, several problems concerning the geothermics study are discussed, and it is concluded that （Ⅰ） comparing with other marginal basins, the heat flow of the Okinawa Trough is abnormally high and ununiform; （ Ⅱ ） the ratio of the crustal to mantle heat flow is approximately 1 ： 3, revealing the transitional characteristic of the crust; （ Ⅲ ） the strong magmatism is a key factor to result in the local high heat flow value in the Okinawa Trough; and （ Ⅳ） the extensively distributed seafloor hydrothermal activities cause the local heat flow variation.
出处
《海洋通报》
CAS
CSCD
北大核心
2006年第5期70-76,共7页
Marine Science Bulletin
基金
国家"863"计划资助项目(2004AA606061)
关键词
冲绳海槽
热流岩浆作用
热液活动
Okinawa Trough
Heat flow
Magmatism
Hydrothermal activity
