首页|Inversion of Seabed Geotechnical Properties in the Arctic Chukchi Deep Sea Basin Based on Time Domain Adaptive Search Matching Algorithm

Inversion of Seabed Geotechnical Properties in the Arctic Chukchi Deep Sea Basin Based on Time Domain Adaptive Search Matching Algorithm

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The chirp sub-bottom profiler,for its high resolution,easy accessibility and cost-effectiveness,has been widely used in acoustic detection.In this paper,the acoustic impedance and grain size compositions were obtained based on the chirp sub-bottom profiler data collected in the Chukchi Plateau area during the 11th Arctic Expedition of China.The time-domain adaptive search match-ing algorithm was used and validated on our established theoretical model.The misfit between the inversion result and the theoretical model is less than 0.067%.The grain size was calculated according to the empirical relationship between the acoustic impedance and the grain size of the sediment.The average acoustic impedance of sub-seafloor strata is 2.5026×106 kg(s m2)-1 and the average grain size(θ value)of the seafloor surface sediment is 7.1498,indicating the predominant occurrence of very fine silt sediment in the study area.Comparison of the inversion results and the laboratory measurements of nearby borehole samples shows that they are in general agreement.

time domain adaptive search matching algorithmacoustic impedance inversionsedimentary grain sizeArctic OceanChukchi Deep Sea Basin

AN Long、XU Chong、XING Junhui、GONG Wei、JIANG Xiaodian、XU Haowei、LIU Chuang、YANG Boxue

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Jiangsu Automation Research Institute,Lianyungang 222061,China

Key Laboratory of Submarine Geosciences and Prospecting Techniques,MOE and College of Marine Geosciences,Ocean University of China,Qingdao 266100,China

Laboratory for Marine Mineral Resources,Qingdao Marine Science and Technology Center,Qingdao 266071,China

National Key R&D Program of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central Universities

2021YFC280120242076224202262012

2024

10.1007/s11802-024-5602-4

中国海洋大学学报(自然科学英文版)
中国海洋大学

中国海洋大学学报(自然科学英文版)

CSTPCD
影响因子：0.268
ISSN：1672-5182
年,卷(期)：2024.23(4)
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