DGS AT1M-11型海洋重力仪在东北印度洋的应用与研究*

doi:10.11978/2025056

Abstract

Abstract:

In marine areas, the study of the gravity field is of great significance for understanding marine dynamic processes, submarine geological structures, and global climate change. High-precision marine gravity exploration technology has become the current development trend in marine gravity field investigation. The R/V “Shiyan 6” of the South China Sea Institute of Oceanography, Chinese Academy of Sciences, is equipped with a DGS AT1M-11 marine gravimeter, which is characterized by high precision, high reliability, and the ability to conduct global dynamic measurements. Before the gravimeter was put into use, the accuracy was evaluated, including static tests and internal conformity accuracy tests, all of which met the requirements of the Marine Survey Measurement Specification. The measured data collected in the northeastern Indian Ocean in 2022 was compared with the gravity field data from the Gravity Recovery and Climate Experiment (GRACE), which showed a basically consistent trend. Additionally, the results of the pre- and post-cruise benchmark tests of the voyage and the gravity intersection point difference are −0.73 mGal and 1.15 mGal respectively, indicating that the data of this instrument is highly accurate and can be used for high-precision marine gravity measurements. The gravitational field of the 90°E Ridge north of 10°S is not proportional to the water depth, suggesting differences in equilibrium compensation for crustal thickness and that the ridge consists of non-homogeneous material. Gravity modeling of the free-air gravity anomalies obtained from the measured data indicates the presence of a thickened crust beneath the 90°E Ridge, associated with compensation for topographic relief loads.

Key words: DGS AT1M-11 marine gravimeter, 90°E Ridge, northeastern Indian Ocean, gravity modeling, R/V “Shiyan 6”

CLC Number:

P738.2

WANG Xingyue, MAO Huabin, QI Yongfeng, XING Huanlin, YU Linghui, LI Xianpeng. Application and study of the DGS AT1M-11 marine gravimeter in the northeastern Indian Ocean^*[J].Journal of Tropical Oceanography, 2026, 45(1): 168-177.

Figures/Tables 10

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References 36

[1]	DONG QINGLIANG, LI DONGQING, YANG JIANYU, et al, 2019. Set and operations of the sea gravity while replacing parts[J]. Hydrographic Surveying and Charting, 39(1): 44-47 (in Chinese with English abstract).
[2]	黄谟涛, 翟国君, 管铮, 等, 2005. 海洋重力场测定及其应用[M]. 北京: 测绘出版社 (in Chinese).
[3]	黄仲良, 2008. 石油重磁电法勘探[M]. 东营: 中国石油大学出版社.
	HUANG ZHONGLIANG, 2008. Gravity, magnetic and electrical prospecting of petroleum[M]. Dongying: China University of Petroleum Press (in Chinese).
[4]	李锦, 成月, 魏柠阳, 2018. 海洋重力仪的研究现状[C]// 中国造船工程学会船舶力学学术委员会第九届全体会议论文集. 无锡: 中国造船工程学会 (in Chinese).
[5]	宁津生, 黄谟涛, 欧阳永忠, 等, 2014. 海空重力测量技术进展[J]. 海洋测绘, 34(3): 67-72, 76.
	NING JINSHENG, HUANG MOTAO, OUYANG YONGZHONG, et al, 2014. Development of marine and airborne gravity measurement technologies[J]. Hydrographic Surveying and Charting, 34(3): 67-72, 76 (in Chinese with English abstract).
[6]	欧阳永忠, 2013. 海空重力测量数据处理关键技术研究[D]. 武汉: 武汉大学.
	OUYANG YONGZHONG, 2013. On key technologies of data processing for air-sea gravity surveys[D]. Wuhan: Wuhan University (in Chinese with English abstract).
[7]	冉将军, 许厚泽, 钟敏, 等, 2014. 利用GRACE重力卫星观测数据反演全球时变地球重力场模型[J]. 地球物理学报, 57(4): 1032-1040.
	RAN JIANGJUN, XU HOUZE, ZHONG MIN, et al, 2014. Global temporal gravity filed recovery using GRACE data[J]. Chinese Journal of Geophysics, 57(4): 1032-1040 (in Chinese with English abstract).
[8]	王福民, 叶宇星, 2007. S-Ⅱ型海洋重力仪介绍和使用方法[J]. 物探装备, 17(3): 210-214.
[1]	董庆亮, 李东庆, 杨建宇, 等, 2019. 海洋重力仪更换部件时的设置与操作[J]. 海洋测绘, 39(1): 44-47.
[8]	WANG FUMIN, YE YUXING, 2007. Introduction SⅡ marine gravimeter and its usage[J]. Equipment for Geophysical Prospecting, 17(3): 210-214 (in Chinese with English abstract).
[9]	许才军, 申文斌, 晁定波, 2006. 地球物理大地测量学原理与方法[M]. 武汉: 武汉大学出版社.
	XU CAIJUN, SHEN WENBIN, CHAO DINGBO, 2006. Geophysical geodesy principles and methods[M]. Wuhan: Wuhan University Press (in Chinese).
[10]	姚长利, 郝天珧, 管志宁, 等, 2003. 重磁遗传算法三维反演中高速计算及有效存储方法技术[J]. 地球物理学报, 46: 252-258.
	YAO CHANGLI, HAO TIANYAO, GUAN ZHINING, et al, 2003. High-speed computation and efficient storage in 3-D gravity and magnetic inversion based on genetic algorithms[J]. Chinese Journal of Geophysics, 46: 252-258 (in Chinese with English abstract).
[11]	张彬彬, 万丽丽, 2024. DGS-AT1M型海洋重力仪静态观测结果分析与评估[J]. 物探与化探, 48(4): 1018-1024.
	ZHANG BINBIN, WAN LILI, 2024. Analysis and assessment of static measurement results from a DGS-AT1M marine gravimeter[J]. Geophysical and Geochemical Exploration, 48(4): 1018-1024 (in Chinese with English abstract).
[12]	张登, 袁园, 陶春辉, 等, 2020. DGS AT1M-3海洋重力仪的应用及精度评估[J]. 海洋测绘, 40(3): 68-72.
	ZHANG DENG, YUAN YUAN, TAO CHUNHUI, et al, 2020. Application and accuracy evaluation of DGS AT1M-3 marine gravimeter[J]. Hydrographic Surveying and Charting, 40(3): 68-72 (in Chinese with English abstract).
[13]	张遴梁, 2001. 海洋重力仪的现状和发展[J]. 海洋科学, 25(9): 18-20.
	ZHANG LINLIANG, 2001. Present state and development of marine gravimeter[J]. Marine Sciences, 25(9): 18-20 (in Chinese).
[14]	朱佳豪, 裴彦良, 支鹏遥, 等, 2024. 东印度洋东经90°海岭的地球物理特征和成因探讨[J]. 海洋科学进展, 42(3): 515-531.
	ZHU JIAHAO, PEI YANLIANG, ZHI PENGYAO, et al, 2024. Geophysical characteristics and genesis of the Ninetyeast Ridge in the Eastern Indian Ocean[J]. Advances in Marine Science, 42(3): 515-531 (in Chinese with English abstract).
[15]	曾华霖, 1999. 重力仪的现状及发展[J]. 物探与化探, 23(2): 84-89, 103.
	ZENG HUALIN, 1999. Present state and development of gravimeters[J]. Geophysical and Geochemical Exploration, 23(2): 84-89, 103 (in Chinese with English abstract).
[16]	曾华霖, 2005. 重力场与重力勘探[M]. 北京: 地质出版社 (in Chinese).
[17]	曾华霖, 李小孟, 1999. 重力勘探油气藏方法及其应用[M]. 北京: 地质出版社 (in Chinese).
[18]	中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会, 2007. 海洋调查规范第8部分: 海洋地质地球物理调查(GB/T 12763. 8-2007)[S]. 北京: 中国标准出版社.
	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China, 2007. Specifications for oceanographic survey-Part 8 : Marine geology and geophysics survey(GB/T 12763. 8-2007)[S]. Beijing: Standards Press of China (in Chinese).
[19]	中华人民共和国自然资源部, 2020. 海洋重力测量技术规范( DZ/T 0356-2020)[S].
	Ministry of Natural Resources, PRC, 2020. Technical specification for marine gravity survey (DZ/T 0356-2020) (in Chinese).
[20]	CHAMBERS D P, WILLIS J K, 2010. A global evaluation of ocean bottom pressure from GRACE, OMCT, and steric-corrected altimetry[J]. Journal of Atmospheric and Oceanic Technology, 27(8): 1395-1402. doi: 10.1175/2010JTECHO738.1
[21]	CHEN J L, WILSON C R, TAPLEY B D, 2006. Satellite gravity measurements confirm accelerated melting of Greenland ice sheet[J]. Science, 313(5795): 1958-1960. doi: 10.1126/science.1129007 pmid: 16902089
[22]	CHRISTENSEN N I, MOONEY W D, 1995. Seismic velocity structure and composition of the continental crust: a global view[J]. Journal of Geophysical Research: Solid Earth, 100(B6): 9761-9788.
[23]	DEAN S M, MINSHULL T A, WHITMARSH R B, et al, 2000. Deep structure of the ocean-continent transition in the southern Iberia Abyssal Plain from seismic refraction profiles: The IAM-9 transect at 40°20′N[J]. Journal of Geophysical Research: Solid Earth, 105(B3): 5859-5885.
[24]	FRANCIS T J G, RAITT R W, 1967. Seismic refraction measurements in the southern Indian Ocean[J]. Journal of Geophysical Research, 72(12): 3015-3041. doi: 10.1029/JZ072i012p03015
[25]	FREY F A, NOBRE SILVA I G, HUANG SHICHUN, et al, 2015. Depleted components in the source of hotspot magmas: Evidence from the Ninetyeast Ridge (Kerguelen)[J]. Earth and Planetary Science Letters, 426: 293-304. doi: 10.1016/j.epsl.2015.06.005
[26]	HAMILTON E L, 1978. Sound velocity-density relations in sea-floor sediments and rocks[J]. The Journal of the Acoustical Society of America, 63(2): 366-377. doi: 10.1121/1.381747
[27]	KRISHNA K S, ABRAHAM H, SAGER W W, et al, 2012. Tectonics of the Ninetyeast Ridge derived from spreading records in adjacent oceanic basins and age constraints of the ridge[J]. Journal of Geophysical Research: Solid Earth, 117: B04101.
[28]	LIANG K L, 1996. Marine gravity measurement and magnetometry[M]. Beijing: Surveying and Mapping Press.
[29]	MUKHOPADHYAY M, KRISHNA M B R, 1995. Gravity anomalies and deep structure of the Ninetyeast Ridge north of the equator, eastern Indian Ocean: a hot spot trace model[J]. Marine Geophysical Researches, 17(2): 201-216. doi: 10.1007/BF01203426
[30]	RAO G S, RADHAKRISHNA M, SREEJITH K M, et al, 2016. Lithosphere structure and upper mantle characteristics below the Bay of Bengal[J]. Geophysical Journal International, 206(1): 675-695. doi: 10.1093/gji/ggw162
[31]	ROYER J Y, CHANG T, 1991. Evidence for relative motions between the Indian and Australian Plates during the last 20 m. y. from plate tectonic reconstructions: Implications for the deformation of the Indo-Australian Plate[J]. Journal of Geophysical Research: Solid Earth, 96(B7): 11779-11802.
[32]	SANDWELL D T, MÜLLER R D, SMITH W H F, et al, 2014. New global marine gravity model from CryoSat-2 and Jason-1 reveals buried tectonic structure[J]. Science, 346(6205): 65-67. doi: 10.1126/science.1258213
[33]	SCLATER J G, FISHER R L, 1974. Evolution of the east: central Indian Ocean, with emphasis on the tectonic setting of the Ninetyeast Ridge[J]. GSA Bulletin, 85(5): 683-702. doi: 10.1130/0016-7606(1974)85<683:EOTECI>2.0.CO;2
[34]	TAPLEY B D, CHAMBERS D P, BETTADPUR S, et al, 2003. Large scale ocean circulation from the GRACE GGM01 Geoid[J]. Geophysical Research Letters, 30(22):2163.
[35]	WOUTERS B, CHAMBERS D, SCHRAMA E J O, 2008. GRACE observes small-scale mass loss in Greenland[J]. Geophysical Research Letters, 35(20): L20501.
[36]	ZHANG WANG, SHI XIAOWEI, XIAO CHUNQIAO, et al, 2020. Discussion on the delay time of DGS AT1M marine gravimeter[C]. IOP Conference Series: Materials Science and Engineering, 782(4): 042006.

日期	时间	地点	桥面至水面距离/m	船舶吃水/m	重力仪读数/mGal
2022-03-10	12:40	南海海洋研究所新洲码头	2.51	5.6	10108.8
2022-05-22	16:14	南海海洋研究所新洲码头	1.75	5	10106.6

交点序号	经度	纬度	第一次经过		第二次经过		两次差值/mGal
交点序号	经度	纬度	时间(北京)	重力/mGal	时间(北京)	重力 /mGal	两次差值/mGal
1	88°59′59.64″E	9°59′50.28″S	2022-03-25, 23:54:02	9467.46	2022-03-29, 02:59:14	9466.54	−0.92
2	87°06′16.92″E	0°02′37.68″N	2022-04-05, 15:15:05	9300.89	2022-05-01, 10:20:58	9302.29	−1.41
3	89°54′06.12″E	2°59′54.96″N	2022-04-08, 23:04:28	9336.72	2022-04-11, 10:02:54	9337.79	1.06

Application and study of the DGS AT1M-11 marine gravimeter in the northeastern Indian Ocean^*

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Application and study of the DGS AT1M-11 marine gravimeter in the northeastern Indian Ocean*

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Application and study of the DGS AT1M-11 marine gravimeter in the northeastern Indian Ocean^*