南海西南次海盆广角地震探测*

doi:10.11978/j.issn.1009-5470.2012.03.005

Abstract

Abstract: During December 2010 and March 2011, Ocean Bottom Seismometer (OBS) experiment was carried out in the southwest sub-basin of the South China Sea (SWSB). Three types of OBS, Sedis IV type, I-4C type and MicrOBS type, were used in the experiment, and the energy source was supplied by 4?24.5L large volume air-gun. High quality seismic data that covered the extinct mid ocean ridge of the SWSB were acquired. The data could provide evidence for oceanic crust structure of the SWSB and seafloor spreading course, among others. The data of the seven stations of Profile 1 have been processed, which shows that the seismic records are clear and seismic phases are abundance and that the air-guns had enough energy supplies. Seismic phase analysis and first arrival tomography indicate that the crust of the SWSB is normal oceanic crust with a thin sedimentary layer on the seamount and shallow moho, which provides a good foundation for future research.

Key words: OBS, wide-angle seismic, southwest sub-basin of the South China Sea, seafloor spreading

CLC Number:

P738.4

WU Zhen-li, RUAN Ai-guo, LI Jia-biao, LEE Chao-shing, QIU Xue-lin, DING Wei-wei. Wide-angle seismic exploration in the southwest sub-basin of the South China Sea[J].Journal of Tropical Oceanography, 2012, 31(3): 35-39.

References

[1] RU K, PIGOTT J D. Episodic rifting and subsidence in the South China Sea [J]. AAPG Bull, 1986, 70(9): 1136-1155.

[2] 金翔龙. 南海地球科学研究报告[J]. 东海海洋, 1989, 7(4): 21-29.

[3] 刘光鼎. 中国海区及邻域地球物理图集[M]. 北京: 科学出版社, 1992: 1-10.

[4] 金庆焕. 南海地质与油气资源[M]. 北京:地质出版社, 1989: 222-343.

[5] 姚伯初, 曾维军, HAYES D E, 等．中美合作调研南海地质专报[M]．武汉: 中国地质大学出版社, 1994: 191-194.

[6] 李家彪. 中国边缘海形成演化与资源效应[M]. 北京:海洋出版社, 2005: 220-228.

[7] 丘学林, 施小斌, 阎贫, 等. 南海北部地壳结构的深地震探测和研究新进展[J]. 自然科学进展, 2003, (3): 231-236.

[8] YAN PIN, ZHOU DI, LIU ZHAOSHU. A crustal structure profile across the northern continental margin of the South China Sea[J]. Tectonophysics, 2001, 338(1): 1-21.

[9] ZHAO M H, QIU X L, XIA S H, et al. Seismic structure in the northeastern South China Sea: S-wave velocity and Vp/Vs ratios derived from three-component OBS data[J]. Tectonophysics, 2010, 480, 183–197. doi: 10.1016/j.tecto. 2009.10.004.

[10] QIU XUELIN, YE SANYU, WU SHIMIN, et al. Crustal structure across the Xisha Trough, northwestern South China Sea[J]. Tectonophysics, 2001, 341: 179-193.

[11] 赵明辉, 丘学林, 叶春明, 等. 南海东北部海陆深地震联测与滨海断裂带两侧地壳结构分析[J]. 地球物理学报, 2004, 47(5): 845-852.

[12] WANG T K, CHEN M K, LEE C S, et al. Seismic imaging of the transitional crust across the northeastern margin of the South China Sea[J]. Tectonophysics, 2006, 412(3-4): 237-254.

[13] 李湘云, 吴振利, 薛彬, 等. SEDIS Ⅳ型短周期自浮式海底地震仪及应用体会[J]. 热带海洋学报, 2007, 26(5): 35-39.

[14] 吴振利, 阮爱国, 李家彪, 等. 南海中北部地壳深部结构探测新进展[J]. 华南地震, 2008, 28(1): 21-28.

[15] 阮爱国, 丘学林, 李家彪, 等. 中国海洋深地震探测与研究进展[J]. 华南地震, 2009, 29(2): 10-18.

[16] 阮爱国, 牛雄伟, 吴振利, 等. 潮汕坳陷中生代沉积的折射波2D速度结构和密度[J]. 高校地质学报, 2009, 15: 417-428.

[17] 阮爱国, 李家彪, 陈永顺, 等. 国产I-4C型OBS西南印度洋中脊试[J].地球物理学报,2010, 53(4): 1015-1018.

[18] WU ZHENLI, LI JIABIAO, RUAN AIGUO, et al. Crustal structure of the northwestern sub-basin, South China Sea: Results from a wide-angle seismic experiment[J]. Sci China Earth Sci, 2012, 55: 159-172. doi: 10.1007/s11430-011- 4324-9.

[19] 陈雪, 林进峰. 南海中央海盆岩石圈厚度和地壳年代的初步分析[J]. 海洋学报, 1997, 19(2): 71-84.

[20] 姚伯初. 南海西南海盆的岩石圈张裂模式探讨[J]. 海洋地质与第四纪地质, 1999, 19(2):37-48.

[21] 陈洁, 温宁. 南海地球物理图集[M]. 北京: 科学出版社, 2010: 5-6.

[22] TAYLOR B, HAYES D E. The tectonic evolution of the South China Sea Basin[M]// HAYES D E. The tectonic and geologic evolution of southeast Asian seas and islands. Geophys Monogr. Washington D C : AGU, 1980, 23: 89-104.

[23] 姚伯初. 南海海盆在新生代的构造演化[J]. 南海地质研究, 1991, 3:9-23.

[24] BRIAIS A, PATRIAT P, TAPPONNIER P. Updated interpretation of magnetic anomalies and seafloor spreading in the South China Sea: implications for the Tertiary Tectonics of Southeast Asia[J]. J Geophys Res, 1993, 98(B4): 6299-6328.

[25] COHEN J K, STOCKWELL J W. The SU user's manual[M]. Chicago: Colorado School of Mines, 1995: 1-40.

[26] MAKRIS J, THIE?EN J. Wide-Angle Reflections: a Tool to Penetrate Horizons with High Acoustic Impedance Contrasts[C]. Exp Abstr, SEG 54th annual meeting, Atlanta. 1984: 672-674.

Wide-angle seismic exploration in the southwest sub-basin of the South China Sea

PDF (PC)

Like

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 0

[1]	XU Bingjie, LIU Yiming, LIAN Changpeng, WU Tao, PAN Ying. Ovarian development, oocyte and yolk production of Paphia textile in Beibu Gulf, Guangxi [J]. Journal of Tropical Oceanography, 2024, 43(2): 48-58.
[2]	QIU Yan, JU Dong, HUANG Wenkai, WANG Yingmin, NIE Xin. Re-determination of the initiation time of the seafloor spreading of the Central Basin, South China Sea [J]. Journal of Tropical Oceanography, 2024, 43(2): 154-165.
[3]	LI Junmin, LI Bo, CHEN Wuyang, LIU Junliang. Observation characteristics of coastal waves in Sanya and their responses to typhoon processes [J]. Journal of Tropical Oceanography, 2023, 42(4): 25-35.
[4]	QIAO Lijun, YAO Xuemei, YU Qiaochi. Development of oocytes and reproductive cycle of Siphonosoma australe in Hainan [J]. Journal of Tropical Oceanography, 2022, 41(5): 161-169.
[5]	GUO Jian, QIU Xuelin, LI Zizheng, HUANG Haibo. Data processing and phase identification of OBS2019-2 in Nansha Block* [J]. Journal of Tropical Oceanography, 2022, 41(5): 43-56.
[6]	GUO Xiaoran, LIU Shanhu. Characteristics of secondary Ps phases recorded by ocean bottom seismometer in the Taiwan Strait and its application [J]. Journal of Tropical Oceanography, 2022, 41(5): 57-63.
[7]	LIAN Changpeng, WU Tao, WANG Chaoqi, YANG Ling, PAN Ying. Ovarian development, histology of oogenesis and yolk formation of Tapes conspersus from the Beihai Yingpan, Guangxi [J]. Journal of Tropical Oceanography, 2022, 41(5): 170-179.
[8]	ZENG Yigang, JING Zhiyou, HUANG Xiaolong, ZHENG Ruixi. Analysis of the dynamic characteristics of the east Guangdong shelf front in the northern South China Sea in summer [J]. Journal of Tropical Oceanography, 2022, 41(4): 136-145.
[9]	YANG Shaoqiong, CHENG Dan, CHEN Guangyao, LUO Chenyi, NIU Wendong, MA Wei, FA Shuai. Review on the application of underwater gliders for observing typical ocean phenomena [J]. Journal of Tropical Oceanography, 2022, 41(3): 54-74.
[10]	NIE Wangchen, WANG Xidong, CHEN Zhiqiang, HE Zikang, FAN Kaigui. Research and application of global three-dimensional thermohaline reconstruction technology based on neural network [J]. Journal of Tropical Oceanography, 2022, 41(2): 1-15.
[11]	ZHANG Haoyu, QIU Xuelin, HUANG Haibo. Automatic search and non-uniqueness analysis of shear wave models from active Ocean Bottom Seismometer data [J]. Journal of Tropical Oceanography, 2022, 41(1): 194-203.
[12]	WANG Lifang, HUANG Tao, DU Chuanjun, GUO Xianghui. Comparison of different continuous in-situ observation systems in seawater [J]. Journal of Tropical Oceanography, 2021, 40(3): 103-113.
[13]	CAI Shuqun, NIU Jianwei, HE Yinghui, CHEN Xuebin, ZHANG Yongkang, XU Jiexin, CHEN Zhiwu, LIN Shicheng, XIE Jieshuo. A view on constructing synchronous real-time in-situ observational system of marine hydrology based on offshore wind power field [J]. Journal of Tropical Oceanography, 2021, 40(3): 96-102.
[14]	XU Changsan, SONG Xiangzhou, QI Yiquan. On the mechanisms behind diurnal variations in air-sea turbulent heat fluxes under different boundary layer stability [J]. Journal of Tropical Oceanography, 2021, 40(3): 57-68.
[15]	DU Yan, CHEN Ju, JING Zhiyou, WANG Xiangpeng, CHEN Gengxin, XU Chi, CHU Xiaoqing, CHEN Zhiwu, XU Jie, SHI Zhen, TANG Shilin, HE Yunkai, LIANG Yun, SHI Ping. Thoughts on the key scientific issues of Shiptime Sharing Project/Open Cruise in the South China Sea—From the perspective of multi-scale ocean dynamics [J]. Journal of Tropical Oceanography, 2020, 39(6): 1-17.