A probe heat flow value of the East China Sea shelf

LI Guanbao; LIU Baohua; LI Naisheng

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A probe heat flow value of the East China Sea shelf

机译：东海陆架热流探测值

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摘要

Bottom temperature variation (BTV) is a serious problem in determining the thermal gradient and heat flow of the sediments in shallow seas. The water depth of the East China Sea shelf is mostly below 150m, and the heat flow measurement is strongly affected by BTV. Following a statistical algorithm, we rechecked the temperature and thermal conductivity data of the cruises KX90-1 and KX91-1, carried out by a cooperation program of China and Japan, and calculate the heat flow in a site without long-term temperature record. The calculated heat flow in the site was 58.6±3.6 mW/m2, being just within the range of the drill heat flow value of East China Sea shelf. The inversed amplitude spectrum of BTV has a peak in frequency of 1/10 per year, and the annual component is also an important part. Comparison with two lakes of Lake Greifensee and Lac Leman (I.e. Lake Geneva), which are in different water depth, revealed that with increasing water depth, the peak of amplitude spectrum moved towards low frequency components. The heat flow values calculated in this paper and from petroleum bore hole in East China Sea shelf are much more close to that in southeast China than in Okinawa Trough.

机译：在确定浅海沉积物的热梯度和热流时，底部温度变化（BTV）是一个严重的问题。东海陆架的水深大多在150m以下，BTV对热流测量的影响很大。根据统计算法，我们重新检查了中日合作计划进行的KX90-1和KX91-1巡洋舰的温度和热导率数据，并计算了没有长期温度记录的站点中的热流。计算得出的现场热流量为58.6±3.6 mW / m2，刚好在东海陆架钻探热流量值的范围内。 BTV的反振幅谱的峰值频率为每年1/10，并且年度分量也是重要组成部分。与不同水深的格里芬湖湖和莱克勒曼湖（即日内瓦湖）两个湖进行比较后发现，随着水深的增加，振幅谱的峰值向低频成分移动。与冲绳海槽相比，本文计算得出的热流值以及从中国东海陆架的石油钻孔获得的热流值更接近中国东南部的热流值。

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来源
《中国海洋湖沼学报（英文版）》 |2006年第3期|243-249|共7页
作者
LI Guanbao; LIU Baohua; LI Naisheng;
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作者单位

First Institute of Oceanography,State Ocean Administration,Qingdao 266061,China;

Key Laboratory of Marine Sedimentology & Environmental Geology,SOA,Qingdao 266061,China;

Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;

First Institute of Oceanography,State Ocean Administration,Qingdao 266061,China;

Key Laboratory of Marine Sedimentology & Environmental Geology,SOA,Qingdao 266061,China;

Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类海洋学;
关键词
East China Sea shelf; heat flow; bottom temperature variation;

机译：东海陆架热流底温变化;

A probe heat flow value of the East China Sea shelf

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