Development progress of long-term seafloor heat flow monitoring system
文献类型：期刊论文
| 作者 | Yang XiaoQiu1,2; Zeng Xin10; Shi HongCai3; Yu ChuanHai1,2; Shi XiaoBin1,2; Guo XingWei4; Wang YingChun5; Ren ZiQiang6; Shao Jia1,2; Xu HeHua1,2 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 65期号:2页码:427-447 |
| 关键词 | Seafloor heat flow Bottom water temperature variation (BTV) Long-term observation Low power consumption High stability temperature measurement technique South China Sea Xingycou Lake Xianshuihe fault zone Shallow borehole in Kangding Huguangyan Maar Lake |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2022P0190 |
| 英文摘要 | The shallow seas and subduction trenches are not only the main potential areas for mineral and hydrocarbon resource, but also areas of frequent tectonic earthquakes. The shallow heat flow and deep temperature distribution are crucial for understanding the process of plate subduction and magma activity. In these areas, the shallow temperature and heat flow fields are strongly disturbed by the bottom water temperature variation (BTV). Thus, its background heat flow needs to be obtained by long-term observation. After a comprehensive analysis of the technical characteristics of the existing long-term seafloor heat flow observation techniques, we proposed a scheme for tethered long-term seafloor heat flow monitoring system (TLHF), and since 2013, carried out a series of pre-developments and tests in the South China Sea, Xingycou Lake, Huguangyan Maar Lake, and Kangding shallow borehole in the Xianshuihe fault zone. The results show: (1) the self-developed long-period and low-power miniature temperature loggers can continuously work for one year in an environment of 2 similar to 36 degrees C. The tethering-type launch and recovery scheme is still feasible even under the conditions of steep terrain, 1.5 knots of velocity and without dynamic positioning. (2) In northern South China Sea, the BTV generally increases as the water depth becomes shallower, whose disturbance to the shallow temperature field cannot be ignored in shallow area. For example, the BTV is only 0.025 similar to 0.053 degrees C during 17 days in Dongsha waters with a depth of 2600 similar to 3200 m but up to 0.182 similar to 0.417 degrees C within 2 days in Xisha waters with a depth of 850 similar to 1200 m. In summer, the seafloor heat flow on the northern slope of the Taixinan Basin (with a water depth of 763 m) from 0.69 W . m(-2) at the shallow surface to -0.25 similar to-0.05 W . m(-2) at a depth of 0.83 m. (3) In Xingycou Lake and Huguangyan Maar Lake, the BTV amplitude gradually decreases and the phase lags during the process of conduction to the deep. That causes the intensity and direction of the heat flow to vary with change of seasons. In Zhonggu Village of Kangding City, the shallow ground temperature is high to 35 similar to 36 degrees C in winter but low to 28 similar to 32 degrees C in summer due to heavy rainfall in summer, and fluctuates synchronously at different depths. The surface heat flow is 0.504 W . m(-2) at the depth of m, and rises to 0.901 W . m(-2) at the depth of m. That indicates the upwelling of thermal fluid from the deep part of the Xianshuihe fault zone. These preliminary work has laid a solid foundation for the development and application of the TLHF system. |
| WOS关键词 | SEISMOGENIC ZONE ; TEMPERATURE-GRADIENTS ; FLUID CIRCULATION ; NORTHERN SLOPE ; SOUTHWEST ; SEDIMENT ; WATER ; AREA ; CONDUCTIVITY ; ANOMALIES |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000776144900002 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/105067]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Yang XiaoQiu |
| 作者单位 | 1.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou 511458, Peoples R China 2.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Peoples R China 3.Guangdong Ocean Univ, Dept Educ Guangdong Prov, Key Lab Climate Resources & Environm Continental, Zhanjiang 524088, Guangdong, Peoples R China 4.China Geol Survey, Qingdao Inst Marine Geol, Qingdao 266071, Shandong, Peoples R China 5.Chengdu Univ Technol, Coll Energy Resources, Chengdu 610059, Peoples R China 6.Three Gorges Geotech Consultants Co Ltd, Wuhan 430074, Peoples R China 7.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 8.Minist Nat Resources, Key Lab Submarine Geosci, Hangzhou 310012, Peoples R China 9.Minist Nat Resources, Inst Oceanog 2, Hangzhou 310012, Peoples R China 10.Sun Yat Sen Univ, Ctr Ocean Expedit, Sch Atmospher Sci, Zhuhai 519082, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang XiaoQiu,Zeng Xin,Shi HongCai,et al. Development progress of long-term seafloor heat flow monitoring system[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2022,65(2):427-447. |
| APA | Yang XiaoQiu.,Zeng Xin.,Shi HongCai.,Yu ChuanHai.,Shi XiaoBin.,...&Pang ZhongHe.(2022).Development progress of long-term seafloor heat flow monitoring system.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,65(2),427-447. |
| MLA | Yang XiaoQiu,et al."Development progress of long-term seafloor heat flow monitoring system".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 65.2(2022):427-447. |
入库方式： OAI收割
来源：地质与地球物理研究所
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