Abstract
The study of coastal currents variations in the Yangtze River mouth has significance for the understanding of riverine sediment 'source to sink' processes in this region. The post-glacial core sediments from the northern Yangtze River mouth, along with sedimentary structures and distributions of grain size and benthic foraminifera, show an estuarine depositional system characterized by tidal sand ridge in Early Holocene and a deltaic system consists of prodelta, delta front slope and delta front. Based on changes in the dominant microfauna species, two main current patterns prevailed in this region during most of the Holocene: one is the Yellow Sea coastal current (YSCC) and the other is the Yangtze dilute water (YDW). in Early Holocene, the YSCC dominated this area and the effect of YDW gradually strengthened. The YDW clearly weakened due to the sea level rise in early Middle Holocene. Then the East China Sea water mass (ESWM) penetrated the area dominated by mixed water mass consists of YDW, YSCC, Zhe-Min coastal current (ZMCC) and Yellow Sea cold water (YSCW), yet the Yangtze plume prevailed due to the rapid seaward migration of the Yangtze mouth.The YDW dominated this area again in Late Holocene.
| Translated title of the contribution | Sedimentary Evolution and Coastal Currents Variations of the Yangtze River Mouth(East China Sea) since Last Deglaciation |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 2697-2708 |
| Number of pages | 12 |
| Journal | Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences |
| Volume | 45 |
| Issue number | 7 |
| DOIs | |
| State | Published - 1 Jul 2020 |