探针偏角对海底热流测量结果的影响*

doi:10.11978/2015117

热带海洋学报 ›› 2016, Vol. 35 ›› Issue (4): 95-101.doi: 10.11978/2015117CSTR: 32234.14.2015117

探针偏角对海底热流测量结果的影响^*

徐子英^{1, 2}, 杨小秋², 施小斌², 曾信², 赵俊峰², 于传海²

1. 国土资源部海底矿产资源重点实验室, 广州海洋地质调查局, 广东广州 510075;
2. 中国科学院边缘海地质重点实验室, 南海海洋研究所, 广东广州 510301

收稿日期:2015-09-01 出版日期:2016-07-29 发布日期:2016-08-04
通讯作者: 杨小秋(1981—), 男, 江西省吉安市人, 博士, 副研究员, 从事地热地质、热流探测原理研究与技术研发。E-mail: yxq2081@scsio.ac.cn
作者简介:徐子英(1981—), 女, 江西省上饶市人, 博士, 工程师, 从事海洋区域地质调查与研究。E-mail: ziyingx06@scsio.ac.cn
基金资助:
国家自然科学基金项目(41106086、41474065); 国土资源部海底矿产资源重点实验室开放基金项目(KLMMR-2013-A-10); 中国科学院战略性先导科技专项子课题(XDA11040303); 中国科学院科研装备研制项目(YZ201136); 中国科学院知识创新工程青年人才领域前沿项目(SQ201007); 中国地质调查局项目(GZH201400202、1212010611302); 国家高技术研究发展计划(“863”计划)项目(2009AA09A201-05); 中国科学院边缘海地质重点实验室基金项目(MSGL09-08、MSGL12-08)

Effects on the results of seafloor heat flow measurements by probe tilt

XU Ziying^{1, 2}, YANG Xiaoqiu², SHI Xiaobin², ZENG Xin², ZHAO Junfeng², YU Chuanhai²

1. Key Laboratory of Marine Mineral Resources, Ministry of Land and Resources, Guangzhou Marine Geological Survey, Guangzhou 510075, China;
2. Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

Received:2015-09-01 Online:2016-07-29 Published:2016-08-04
Contact: YANG Xiaoqiu (1981—), E-mail: yxq2081@scsio.ac.cn
Supported by:
National Natural Science Foundation of China (41106086, 41474065); The Key laboratory of Marine Mineral Resources, Ministry of Land and Resources (KLMMR-2013-A-10); The Strategic Priority Research Program of the Chinese Academy of Sciences (XDA11040303); The Instrument Developing Project of the Chinese Academy of Sciences (YZ201136), and the Knowledge Innovation Program of the Chinese Academy of Sciences (SQ201007); China Geological Survey Program (GZH201400202, 1212010611302); The National High Technology Research and Development Program of China (“863”Program) (2009AA09A201-05); The Key Laboratory of Marginal Sea Geology, Chinese Academy of Sciences (MSGL09-08, MSGL12-08)

摘要/Abstract

摘要： 南海和印度洋共87个海底热流测量站位的探针偏角分布表明: 海底热流测量过程中, 探针插入海底沉积物后通常都存在偏角, 其偏角在0°~10°的占48.3%, 10°~20°的占20.7%, 20°~30°的占2.3%, 30°~40°的占2.3%, 超过40°的占26.3%。当用探针偏角较大时, 必然会给地热参数计算带来不容忽视的相对误差。因此, 文章建立探针偏角与地温梯度和热流相对误差之间的定量关系式, 并据此计算得知: 探针偏角<10°时, 对地热参数测量影响不大, 其相对误差只在2.0%以内; 而当探针偏角增大到15°~20°时, 地热参数相对误差则增大到5.0%左右, 且随着探针偏角逐渐增大, 引起的相对误差呈非线性迅速增大。因此, 建议今后进行海底热流测量过程中, 尽可能获取探针插入海底沉积物时的偏角, 进而可对地温梯度和热流进行偏角校正, 获得更为准确的地热参数。

关键词: 海底热流, 地温梯度, 探针偏角, 相对误差, 南海, 印度洋

Abstract: It is well known that probe tilt is one of error sources of seafloor heat flow measurements. And the error can never be neglected when the probe tilt becomes greater. Recently, we found that the probe tilts were more than 10° at over half of the 87 seafloor heat flow measurement stations in the South China Sea and the Indian Ocean, where the probe tilts were recorded simultaneously. Thus, we obtained a quantitative relationship between probe tilt and the errors of thermal gradient and heat flow. Based on this relationship, we learned that the relative error, which is within 2%, can be neglected when the probe tilt is within 10 degrees. But at terrible operation conditions, especially the bad state of the sea, the tilt is perhaps up to 15~20 degrees, the relative error can be up to about 5%, and will increase nonlinearly and swiftly with probe tilt. We suggest that the inclinometer should be attached when we carry out seafloor heat flow measurements. Then, we should make tilt correction for the seafloor thermal gradient and heat flow if possible.

Key words: Seafloor heat flow, Thermal gradient, Probe tilt, Relative error, South China Sea, Indian Ocean

中图分类号:

P716⁺.8

徐子英, 杨小秋, 施小斌, 曾信, 赵俊峰, 于传海. 探针偏角对海底热流测量结果的影响^*[J]. 热带海洋学报, 2016, 35(4): 95-101.

XU Ziying, YANG Xiaoqiu, SHI Xiaobin, ZENG Xin, ZHAO Junfeng, YU Chuanhai. Effects on the results of seafloor heat flow measurements by probe tilt[J]. Journal of Tropical Oceanography, 2016, 35(4): 95-101.

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探针偏角对海底热流测量结果的影响^*

Effects on the results of seafloor heat flow measurements by probe tilt

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