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Pattern of sand ridges and sand sheets in Bohai Sea and the relationship with M<2 tidal current

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doi: 10.3724/SP.J.1140.2015.02023
Authors:Wang Peng; Jia Kai; Wu Jianzheng; Hu Rijun
Author Affiliations:Primary:
Ocean University of China, National Marine Environmental Monitoring Center, Qingdao, China
Volume Title:Haiyang Dizhi yu Disiji Dizhi Marine Geology & Quaternary Geology
Source:Haiyang Dizhi yu Disiji Dizhi = Marine Geology & Quaternary Geology, 35(2), p.23-32. Publisher: Science Press, Beijing, China. ISSN: 0256-1492
Publication Date:2015
Note:In Chinese with English summary. 19 refs.; illus., incl. 5 tables, sketch maps
Summary:Based on the seafloor topography survey in the Bohai Sea, four areas of sand ridges are identified, i.e., the Liaodong Shoal, the east coast of Liaodong Bay, the estuary of Liugu River and Caofeidian. Data are collected from 8 current measurement stations in the sand ridge areas. The dynamics relation between sand ridges and sand sheets are simulated using numerical modeling method. Suppose the source of sediments is available, tidal sand ridges will be developed if the M2 tidal current elliptical semimajor is 50 cm/s to 75 cm/s, and the absolute value of ellipsoid rate less than 0.4. The direction of sand ridges follows the direction of elliptical semimajor. Tidal sand sheets will be developed if the M2 tidal current elliptical semimajor is 40 cm/s to 50 cm/s, and the absolute value of ellipsoid rate between 0.4 to 0.6. Neither tidal sand ridges nor sand sheets will be developed if the M2 tidal current elliptical semimajor is too large or too small.
Subjects:Bedding plane irregularities; Clastic sediments; Currents; Marine sediments; Patterns; Sand; Sand ridges; Sedimentary structures; Sediments; Tidal currents; Bohai Sea; North Pacific; Northwest Pacific; Pacific Ocean; West Pacific; Yellow Sea; Liaodong Bay
Coordinates:N380000 N410000 E1210000 E1190000
Record ID:838892-3
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute.
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