Science in China Series D: Earth Sciences

, Volume 48, Issue 11, pp 1972–1978 | Cite as

Ancient Changjiang channel system in the East China Sea continental shelf during the last glaciation

  • Guangxue Li
  • Yong Liu
  • Zigeng Yang
  • Shuhong Yue
  • Wenda Yang
  • Xibin Han
Article

Abstract

Based on the data of high-resolution seismic profiles, an ancient river channel system of the last glaciation occurred along the Zhedong and Xihu depression in the southeast of Hupijiao rise. The distribution of the channel fill system shows that the ancient Changjiang River went through the Changjiang depression into the low land plain of the outside continental shelf during the low sea level cycle of the last glaciation. The big channel fill into Okinawa Trough is not found due to the depletion of the river kinetic energy in the low land plain. The river discharge dispersal was of an important role to the dilution of the northern Okinawa Trough sea at that time Six ancient river channel systems (A-F), which are main distributaries of ancient Changjiang in the East China Sea continental shelf during the last glaciation, may be buried off the modern Changjiang estuary. The distribution of these channels coincides with the zonal elevations in the sea floor.

Keywords

last glaciation continental shelf plain Changjiang River ancient channel fill 

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Copyright information

© Science in China Press 2005

Authors and Affiliations

  • Guangxue Li
    • 1
    • 2
  • Yong Liu
    • 1
  • Zigeng Yang
    • 3
  • Shuhong Yue
    • 4
  • Wenda Yang
    • 5
  • Xibin Han
    • 1
  1. 1.College of Marine Geo-scienceOcean University of ChinaQingdaoChina
  2. 2.Shandong Key Laboratory of Sea Floor Resource and Exploration TechniqueQingdaoChina
  3. 3.Qingdao Institute of Marine GeologyQingdaoChina
  4. 4.College of Marine EnvironmentOcean University of ChinaQingdaoChina
  5. 5.First Survey Team of Marine GeologyShanghai Bureau of PetroleumShanghaiChina

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