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Internal architecture and mobility of tidal sand ridges in the East China Sea |
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| Authors: | Zhenxia Liu Serge Berné Yoshiki Saito Hua Yu Alain Trentesaux Katsuto Uehara Ping Yin J Paul Liu Chaoxing Li Guanghai Hu Xiangqin Wang |
| Institution: | 1. First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, PR China;2. Rice University, Houston, TX 77005, USA;3. Geological Survey of Japan, AIST, Tsukuba 305-8567, Japan;4. IFREMER, DRO/GM, P.O. Box 70, 29280 Plouzané, France;5. PBDS Laboratory, UMR 8110 CNRS, University of Lille 1, 59 655 Villeneuve d’Ascq, France;6. DSRC/RIAM, Kyushu University, Kasuga, Fukuoka 816-8580, Japan;g Qingdao Institute of Marine Geology, Qingdao 266071, PR China;h Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, USA;i Ocean University of China, Qingdao 266061, PR China |
| Abstract: | On the basis of bathymetric and seismic data and data from piston cores collected by the Chinese–French marine geology and geophysics investigation of 1996, we discuss the internal architecture and mobility of tidal sand ridges in the East China Sea (ECS). We characterized the sand ridges on the middle to outer shelf of the ECS as tide-dominated sand ridges with southwest dipping beds, indicating that the regional net sediment transport is toward the southwest. As the sand ridges gradually migrate toward the southwest, new sand ridges are continually replacing old ones, and several generations of sand ridges have developed in the study area. |
| Keywords: | Tidal sand ridge Internal architecture Mobility East China sea Ridge evolution Transgression |
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