1.山东科技大学地球科学与工程学院,山东 青岛 266590
2.海洋地质资源湖北省重点实验室 / 中国地质大学(武汉)海洋学院,湖北 武汉 430074
3.自然资源部第一海洋研究所,山东 青岛 266061
4.青岛海洋科学与技术试点国家实验室,山东 青岛 266237
赵俐红(1976年生),女;研究方向:岩石圈动力学、海洋地球物理和构造地质;E-mail:skd992826@sdust.edu.cn
支鹏遥(1982年生),男;研究方向:海洋地球物理;E-mail:zpy8474376@126.com
纸质出版日期:2022-01-25,
网络出版日期:2021-12-12,
收稿日期:2021-07-23,
录用日期:2021-09-19
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赵俐红,李一泉,刘欣悦等.东海陆架深地震震相与地壳结构特征[J].中山大学学报(自然科学版),2022,61(01):84-93.
ZHAO Lihong,LI Yiquan,LIU Xinyue,et al.Deep seismic phases and crustal structure in the East China Sea shelf[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2022,61(01):84-93.
赵俐红,李一泉,刘欣悦等.东海陆架深地震震相与地壳结构特征[J].中山大学学报(自然科学版),2022,61(01):84-93. DOI: 10.13471/j.cnki.acta.snus.2021D057.
ZHAO Lihong,LI Yiquan,LIU Xinyue,et al.Deep seismic phases and crustal structure in the East China Sea shelf[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2022,61(01):84-93. DOI: 10.13471/j.cnki.acta.snus.2021D057.
东海因其特殊的构造位置而成为海洋科学研究的焦点,是海陆地质对比和深部地壳结构研究的理想场所。为此,本文基于在东海陆架地区布设的NW-SE向主动源广角深地震剖面,通过13个站位的震相分析,识别出丰富的Ps、PsP、Pg、PcP和PmP震相。利用射线追踪和走时拟合得到P波速度结构模型。模型表明,中、新生代沉积层埋深东高西低,测线西侧隆起处埋深约1.5~3.5 km,速度1.7~3.6 km/s;测线东侧凹陷处埋深约3.5~9.0 km,速度1.7~5.4 km/s;深部地壳分为上、下2层,其中上地壳底界面埋深13.0~14.5 km,界面起伏不明显,速度5.6~6.2 km/s,下地壳速度6.3~6.9 km/s,底部无明显速度扰动,推测未发育大规模的岩浆底侵及地幔上涌活动;莫霍面埋深26.5~28.5 km,具有凸˗凹˗凸的起伏形态;地壳厚度17.5~27.0 km,为有所减薄的陆壳,具有西厚东薄的特征,其中西侧隆起处拉张因子1.2,东侧凹陷处拉张因子1.3~1.8,表明东海陆架东部较西部经历了更加强烈的地壳拉伸减薄活动。
The East China Sea (ECS) is becoming attractive for marine scientific research owing to its special tectonic location, being recognized as an ideal site for sea-land geological comparison and deep crustal structure research. A deep seismic survey line has been deployed along the NW-SE direction in the ECS shelf to study the deep crustal structure. Abundant seismic phases, such as Ps, PsP, Pg, PcP, and PmP, are identified by analyzing the obtained 13 stations based on wide-angle reflection and refraction theory. The model shows that the burial depth of the Mesozoic and Cenozoic sedimentary is deeper in the east than in the west: in the west segment, it is about 1.5-3.5 km, with the velocity of 1.7-3.6 km/s, while in the east segment, it is about 3.5-9.0 km with the velocity of 1.7-5.4 km/s. The crust is divided into two layers: the upper crust, which has the velocity of 5.6-6.2 km/s, the bottom boundary in the depth of 13.0-14.5 km with a little undulation, and the lower crust, which has the velocity of 6.3-6.9 km/s, the bottom boundary in the depth of 26.5-28.5 km with some undulation. The bottom of the lower crust has no obvious velocity disturbance, implying that there are no large-scale magma activities or mantle upwelling. The crustal thickness is 17.5-27.0 km, presenting a thinned continental crust, and more thinning in the east. The stretching factor is estimated to be 1.2 for the west segment and 1.3-1.8 for the east segment, indicating that the east part of the ECS shelf has experienced more intense crustal stretching and thinning activities than the west part.
东海陆架OBS探测地震震相地壳结构
East China Sea shelfocean bottom seismometer(OBS)seismic phasecrustal structure
李家彪. 东海区域地质[M]. 北京: 海洋出版社, 2008.
郑求根,周祖翼,蔡立国,等. 东海陆架盆地中新生代构造背景及演化[J]. 石油与天然气地质,2005, 26(2): 197-201.
索艳慧,李三忠,戴黎明,等. 东亚及其大陆边缘新生代构造迁移与盆地演化[J]. 岩石学报,2012, 28(8): 2602-2618.
李三忠,余珊,赵淑娟,等. 东亚大陆边缘的板块重建与构造转换[J]. 海洋地质与第四纪地质,2013, 33(3): 65-94.
李家彪,丁巍伟,吴自银. 东海的来历[J]. 中国科学(地球科学),2017, 47(4): 406-411.
索艳慧,李三忠,戴黎明,等. 东海陆架盆地构造单元划分与特征[J]. 海洋地质与第四纪地质,2010, 30(6): 49-58.
朱立新,宋在超. 东海西湖凹陷原型盆地构造格架与演化分析[J]. 海洋石油,2016, 36(1): 1-6.
陈建文,梁杰,张银国,等. 中国海域油气资源潜力分析与黄东海海域油气资源调查进展[J]. 海洋地质与第四纪地质,2019, 39(6): 1-29.
钟锴,朱伟林,高顺莉,等. 东海陆架盆地形成演化及油气成藏关键地质问题[J]. 地球科学,2018, 43(10): 3485-3497.
周心怀,蒋一鸣,唐贤君. 西湖凹陷成盆背景、原型盆地演化及勘探启示[J]. 中国海上油气, 2019, 31(3): 1-10.
吴招才,高金耀,沈中延,等. 中国东部及近海磁异常特征及大地构造意义[J]. 地学前缘,2018, 25(1): 210-217.
韩波,张训华,孟祥君. 东海磁场及磁性基底特征[J]. 海洋地质与第四纪地质,2010, 30(1): 71-76.
何慧优,方剑,陈铭,等. 利用重力数据反演中国东海海域莫霍面深度[J]. 武汉大学学报(信息科学版),2019, 44(5): 682-689.
吴健生,王家林,陈冰,等. 中国东部海区岩石层结构的区域综合地球物理研究[J]. 地球物理学报,2014, 57(12): 3884-3895.
SHANG L N, ZHANG X H, JIA Y G, et al. Late Cenozoic evolution of the East China continental margin insights from seismic, gravity, and magnetic analyses[J]. Tectonophysics, 2017, 698: 1-15.
CUKUR D, HOROZAL S, KIM D C, et al. Seismic stratigraphy and structural analysis of the northern East China Sea Shelf Basin interpreted from multi-channel seismic reflection data and cross-section restoration[J]. Marine and Petroleum Geology,2011, 28(5): 1003-1022.
郝天珧,刘建华,黄忠贤,等.边缘海岩石层结构研究[J].地球物理学进展,2004, 19(3): 583-589.
刘建华,胥颐,郝天珧,等. 中国边缘海及邻区地壳和上地幔速度结构特征[J]. 地球物理学进展,2005, 20(3): 594-599.
郝天珧,亚徐,颐胥,等. 对黄海—东海研究区深部结构的一些新认识[J]. 地球物理学报,2006, 49(2): 458-468.
张训华,韩波,孟祥君,等. 东海地区重磁场特征及其地质意义[J]. 矿床地质,2013, 32(4): 844-854.
高德章,赵金海,薄玉玲,等. 东海及邻近地区岩石圈三维结构研究[J]. 地质科学,2006, 41(1): 10-26.
李文兰,魏荣强,崔清辉,等. 基于波形拟合的中国东海地区410 km间断面附近速度结构研究[J]. 地球物理学报,2018, 61(1): 150-160.
胥颐,郝天珧,李志伟,等. 中国边缘海域及其邻区的岩石层结构与构造分析[J]. 地学前缘,2008, 15(3): 55-63.
支鹏遥,刘保华,华清峰,等. 渤海海底地震仪探测试验及初步成果[J]. 地球科学进展,2012, 27(7): 769-777.
李祖辉,郑彦鹏,支鹏遥,等. 渤海东南部深地震探测与地壳结构研究新进展——OBS2013剖面数据处理分析[J]. 地球物理学进展,2015, 30(3): 1402-1409.
HAO T Y, YOU Q Y, LIU L H, et al. Joint land-sea seismic survey and research on the deep structures of the Bohai Sea areas[J]. Acta Oceanologica Sinica,2013, 32(12): 13-24.
LIU L H, HAO T Y, LÜ C C, et al. Crustal structure of Bohai Sea and adjacent area (North China) from two onshore-offshore wide-angle seismic survey lines[J]. Journal of Asian Earth Sciences,2015, 98: 457-469.
ZOU Z H, LIU K, ZHAO W N, et al. Upper crustal structure beneath the northern South Yellow Sea revealed by wide-angle seismic tomography and joint interpretation of geophysical data[J]. Geological Journal, 2016, 51: 108-122.
ZHAO W N, WANG H G, SHI H V, et al. Crustal structure from onshore-offshore wide-angle seismic data: Application to Northern Sulu Orogen and its adjacent area[J]. Tectonophysics,2019, 770:1-12.
KIM H J, KIM C H , HAO T Y, et al. Crustal structure of the Gunsan Basin in the SE Yellow Sea from ocean bottom seismometer (OBS) data and its linkage to the South China Block[J]. Journal of Asian Earth Sciences,2019, 180:1-11.
KUO Y W, WANG C Y, HAO K C, et al. Crustal structures from the Wuyi-Yunkai orogen to the Taiwan orogen: The onshore-offshore wide-angle seismic experiments of the TAIGER and ATSEE projects[J]. Tectonophysics,2016, 692(Part B): 164-180.
YAN P, ZHANG Y F, LI P C, et al. Deep seismic exploration in the Taiwan straits: the hx9 survey line experiment and preliminary results[J]. Earthquake Research in China,2015, 29(4): 459-469.
WANG T K, DENG J M, WANG J, et al. P-wave velocity structures of the crust across the southern Taiwan strait imaged by using air-gun data recorded from ocean-bottom seismometers[J]. Marine Geophysical Research,2020, 41(12): 2-17.
丘学林,赵明辉,徐辉龙,等. 南海深地震探测的重要科学进程:回顾和展望[J]. 热带海洋学报,2012, 31(3): 1-9.
XIA S H, ZHAO F, ZHAO D P, et al. Crustal plumbing system of post-rift magmatism in the northern margin of South China Sea: New insights from integrated seismology[J]. Tectonophysics,2018, 744(2): 227-238.
LIU S Q, ZHAO M H, SIBUET J C, et al. Geophysical constraints on the lithospheric structure in the northeastern South China Sea and its implications for the South China Sea geodynamics[J]. Tectonophysics,2018, 742/743: 101-119.
NAKAMURA M, KATAO H. Microearthquakes and faulting in the southern Okinawa Trough[J]. Tectonophysics,2003, 372(3): 167-177.
WANG T K, LIN S F, LIU C S, et al. Crustal structure of the southernmost Ryukyu subduction zone: OBS, MCS and gravity modelling[J]. Geophysical Journal International,2004, 157(1): 147-163.
LIN J Y, SIBUET J C, LEE C S, et al. Microseismicity and faulting in the southwestern Okinawa Trough[J]. Tectonophysics,2009, 466(3/4): 268-280.
KLINGELHOEFER F, LEE C S, LIN J Y, et al. Structure of the southernmost Okinawa Trough from reflection and wide-angle seismic data[J]. Tectonophysics,2009, 466(3/4): 281-288.
祁江豪,吴志强,张训华,等. 西太平洋弧后地区新生代构造迁移的深部地震证据[J]. 地球科学,2020, 45(7): 2495-2507.
QI J H, ZHANG X H, WU Z Q, et al. Characteristics of crustal variation and extensional break-up in the Western Pacific back-arc region based on a wide-angle seismic profile[J/OL]. Geoscience Frontiers,2021, 12(3) [2021-10-08]. https://www.sciencedirect.com/science/article/pii/S1674987120302140https://www.sciencedirect.com/science/article/pii/S1674987120302140. DOI:10.1016/j.gsf.2020.09.011http://dx.doi.org/10.1016/j.gsf.2020.09.011.
CHEN Y, CUI T, DING W W, et al. New progress on the onshore-offshore seismic survey in east China continental margin[J]. Solid Earth Sciences,2019, 4(3): 85-91.
杨福平,余刚群,侯林锋,等. 浙江省台州-昌化深部构造特征探测[J]. 大地测量与地球动力学,2019, 39(2): 142-147.
ZELT C A, SMITH R B. Seismic travel time inversion for 2-D crustal velocity structure[J]. Geophysical Journal International,1992, 108(1): 16-34.
何慧优. 中国东海卫星重力异常与深部岩石圈结构的对应分析[D]. 北京:中国地质大学(北京), 2011.
张云帆,孙珍,周蒂,等. 南海北部陆缘新生代地壳减薄特征及其动力学意义[J]. 中国科学:地球科学,2007, 37(12): 1609-1616.
周志远,高金耀,吴招才,等. 东海莫霍面起伏与地壳减薄特征初步分析[J]. 海洋学研究,2013, 31(1): 16-25.
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