Cite this paper:
Yanliang PEI, Mingming WEN, Zhengrong WEI, Baohua LIU, Kai LIU, Guangming KAN. Data processing of the Kuiyang-ST2000 deep-towed highresolution multichannel seismic system and application to South China Sea data[J]. Journal of Oceanology and Limnology, 2023, 41(2): 644-659

Data processing of the Kuiyang-ST2000 deep-towed highresolution multichannel seismic system and application to South China Sea data

Yanliang PEI1, Mingming WEN2, Zhengrong WEI3, Baohua LIU4, Kai LIU1, Guangming KAN1,4
1 Key Laboratory of Marine Geology and Metallogeny, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China;
2 Guangzhou Marine Geological Survey, China Geological Survey, Ministry of Natural Resources, Guangzhou 511458, China;
3 College of Ocean Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China;
4 Laoshan Laboratory, Qingdao 266237, China
Abstract:
The Kuiyang-ST2000 deep-towed high-resolution multichannel seismic system was designed by the First Institute of Oceanography, Ministry of Natural Resources (FIO, MNR). The system is mainly composed of a plasma spark source (source level: 216 dB, main frequency: 750 Hz, frequency bandwidth: 150-1 200 Hz) and a towed hydrophone streamer with 48 channels. Because the source and the towed hydrophone streamer are constantly moving according to the towing configuration, the accurate positioning of the towing hydrophone array and the moveout correction of deep-towed multichannel seismic data processing before imaging are challenging. Initially, according to the characteristics of the system and the towing streamer shape in deep water, travel-time positioning method was used to construct the hydrophone streamer shape, and the results were corrected by using the polynomial curve fitting method. Then, a new data-processing workflow for Kuiyang-ST2000 system data was introduced, mainly including float datum setting, residual static correction, phase-based moveout correction, which allows the imaging algorithms of conventional marine seismic data processing to extend to deep-towed seismic data. We successfully applied the Kuiyang-ST2000 system and methodology of data processing to a gas hydrate survey of the Qiongdongnan and Shenhu areas in the South China Sea, and the results show that the profile has very high vertical and lateral resolutions (0.5 m and 8 m, respectively), which can provide full and accurate details of gas hydrate-related and geohazard sedimentary and structural features in the South China Sea.
Key words:    Kuiyang-ST2000 system|deep-towed system|seismic data process|plasma spark source|high resolution|gas hydrate|South China Sea   
Received: 2022-01-30   Revised:
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References:
[1] Asakawa E, Mizohata S, Inamori T et al. 2009. High resolution, deep-tow seismic survey to investigate methane hydrate-bearing sediments, Nankai Trough, Offshore Japan. In:Oceans 2009-EUROPE. IEEE, Bremen, Germany. p.1-8.
[2] Byrd R H, Schnabel R B, Shultz G A. 1988. Approximate solution of the trust region problem by minimization over two-dimensional subspaces. Mathematical Programming, 40(1-3):247-263, https://doi.org/10.1007/BF01580735.
[3] Chapman N R, Gettrust J F, Walia R et al. 2002. Highresolution, deep-towed, multichannel seismic survey of deep-sea gas hydrates off western Canada. Geophysics, 67(4):1038-1047, https://doi.org/10.1190/1.1500364.
[4] Colin F, Ker S, Marsset B. 2020a. Fine-scale velocity distribution revealed by datuming of very-high-resolution deep-towed seismic data:example of a shallow-gas system from the western Black Sea. Geophysics, 85(5):B181-B192, https://doi.org/10.1190/geo2019-0686.1.
[5] Colin F, Ker S, Riboulot V et al. 2020b. Irregular BSR:evidence of an ongoing reequilibrium of a gas hydrate system. Geophysical Research Letters, 47(20):e2020GL089906, https://doi.org/10.1029/2020GL089906.
[6] Gutowski M, Breitzke M, Spieß V. 2002. Fast static correction methods for high-frequency multichannel marine seismic reflection data:a high-resolution seismic study of channel-levee systems on the Bengal Fan.Marine Geophysical Researches, 23(1):57-75, https://doi.org/10.1023/A:1021240415963.
[7] He T, Spence G D, Wood W T et al. 2009. Imaging a hydraterelated cold vent offshore Vancouver Island from deeptowed multichannel seismic data. Geophysics, 74(2):B23-B36, https://doi.org/10.1190/1.3072620.
[8] Ker S, Marsset B, Garziglia S et al. 2010. High-resolution seismic imaging in deep sea from a joint deep-towed/OBH reflection experiment:application to a mass transport complex offshore Nigeria. Geophysical Journal International, 182(3):1524-1542, https://doi.org/10.1111/j.1365-246X.2010.04700.x.
[9] Ker S, Gonidec Y L, Marsset B et al. 2014. Fine-scale gas distribution in marine sediments assessed from deeptowed seismic data. Geophysical Journal International, 196(3):1466-1470, https://doi.org/10.1093/gji/ggt497.
[10] Kong F D, He T, Spence G D. 2012. Application of deeptowed multichannel seismic system for gas hydrate on mid-slope of northern Cascadia margin. Science China Earth Sciences, 55(5):758-769, https://doi.org/10.1007/s11430-012-4377-4.
[11] Leon P, Ker S, Gall Y L et al. 2009. SYSIF a new seismic tool for near bottom very high resolution profiling in deep water. In:Oceans 2009-EUROPE. IEEE, Bremen, Germany. p.1-5.
[12] Li S J, Chu F Y, Fang Y X et al. 2011. Associated interpretation of sub-bottom and single-channel seismic profiles from Shenhu Area in the north slope of South China Sea-characteristic of gas hydrate sediment. Advanced Materials Research, 217-218:1430-1437, https://doi.org/10.4028/www.scientific.net/AMR.217-218.1430.
[13] Lichman E. 1999. Automated phase-based moveout correction.In:SEG Technical Program Expanded Abstracts 1999. Houston. p.1150-1153, https://doi.org/10.1190/1.1820706.
[14] Marsset B, Ker S, Thomas Y et al. 2018. Deep-towed high resolution seismic imaging II:Determination of P-wave velocity distribution. Deep Sea Research Part I:Oceanographic Research Papers, 132:29-36, https://doi.org/10.1016/j.dsr.2017.12.005.
[15] Marsset B, Menut E, Ker S et al. 2014. Deep-towed High Resolution multichannel seismic imaging. Deep Sea Research Part I:Oceanographic Research Papers, 93:83-90, https://doi.org/10.1016/j.dsr.2014.07.013.
[16] Marsset T, Marsset B, Ker S et al. 2010. High and very high resolution deep-towed seismic system:Performance and examples from deep water Geohazard studies. Deep Sea Research Part I:Oceanographic Research Papers, 57(4):628-637, https://doi.org/10.1016/j.dsr.2010.01.001.
[17] Riboulot V, Sultan N, Imbert P et al. 2016. Initiation of gashydrate pockmark in deep-water Nigeria:Geo-mechanical analysis and modelling. Earth and Planetary Science Letters, 434:252-263, https://doi.org/10.1016/j.epsl.2015.11.047.
[18] Rowe M M, Gettrust J F. 1993. Faulted structure of the bottom simulating reflector on the Blake Ridge, western North Atlantic. Geology, 21(9):833-836, https://doi.org/10.1130/0091-7613(1993)021<0833:FSOTBS>2.3.CO;2.
[19] Walia R, Hannay D. 1999. Source and receiver geometry corrections for deep towed multichannel seismic data. Geophysical Research Letters, 26(13):1993-1996, https://doi.org/10.1029/1999GL900402.
[20] Ward P, Asakawa E, Shimizu S. 2004. High resolution, deeptow seismic survey to investigate the methane hydrate stability zone in the Nankai Trough. Resource Geology, 54(1):115-124, https://doi.org/10.1111/j.1751-3928.2004.tb00193.x.
[21] Wei Z R, Pei Y L, Liu B H. 2020. A new deep-towed, multichannel high-resolution seismic system and its preliminary application in the South China Sea. Oil Geophysical Prospecting, 55(5):965-972, https://doi.org/10.13810/j.cnki.issn.1000-7210.2020.05.004. (in Chinese with English abstract)
[22] Xu H N, Yang S X, Zheng X D et al. 2010. Seismic identification of gas hydrate and its distribution in Shenhu Area, South China Sea. Chinese Journal of Geophysics, 53(7):1691-1698. (in Chinese with English abstract)
[23] Yilmaz Ö. 2001. Seismic Data Analysis:Processing, Inversion, and Interpretation of Seismic Data. Science of Exploration Geophysicists, Tulsa. p.380-383, https://doi.org/10.1190/1.9781560801580.
[24] Zhu X Q, Wang Y F, Yu K B et al. 2020a. Dynamic analysis of deep-towed seismic array based on relative-velocityelement-frame. Ocean Engineering, 218:108243, https://doi.org/10.1016/j.oceaneng.2020.108243.
[25] Zhu X Q, Wei Z R, Pei Y L et al. 2020b. Dynamic modeling and position prediction of deep-towed seismic array. Journal of Shandong University (Engineering Science), 50(6):9-16, https://doi.org/10.6040/j.issn.1672-3961.0.2020.084. (in Chinese with English abstract)
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