DISTRIBUTION PATTERN OF SAND RIDGES AND SAND SHEETS IN BOHAI SEA AND THE RELATIONSHIP WITH M2 TIDAL CURRENT

WANG Peng; JIA Kai; WU Jianzheng; HU Rijun

doi:10.3724/SP.J.1140.2015.02023

2015 Vol. 35, No. 2

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Article navigation > Marine Geology & Quaternary Geology > 2015 > 35(2): 23-32

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WANG Peng, JIA Kai, WU Jianzheng, HU Rijun. DISTRIBUTION PATTERN OF SAND RIDGES AND SAND SHEETS IN BOHAI SEA AND THE RELATIONSHIP WITH M2 TIDAL CURRENT[J]. Marine Geology & Quaternary Geology, 2015, 35(2): 23-32. doi: 10.3724/SP.J.1140.2015.02023

Citation:

WANG Peng, JIA Kai, WU Jianzheng, HU Rijun. DISTRIBUTION PATTERN OF SAND RIDGES AND SAND SHEETS IN BOHAI SEA AND THE RELATIONSHIP WITH M2 TIDAL CURRENT[J]. Marine Geology & Quaternary Geology, 2015, 35(2): 23-32. doi: 10.3724/SP.J.1140.2015.02023

DISTRIBUTION PATTERN OF SAND RIDGES AND SAND SHEETS IN BOHAI SEA AND THE RELATIONSHIP WITH M2 TIDAL CURRENT

1. National Marine Environmental Monitoring Center, Dalian 116023, China;
2. Ocean University of China, Qingdao 266100, China

Received Date: 11 May 2014

Revised Date: 25 August 2014

Abstract

Abstract

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 50cm/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.
- sand ridges /
- sand sheets /
- M₂ tidal current /
- Bohai Sea

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References

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