Journal of Geographical Sciences ›› 2013, Vol. 23 ›› Issue (3): 490-502.doi: 10.1007/s11442-013-1023-9

• Research Articles • 上一篇    下一篇

Temporal and spatial evolution of coastline and subaqueous geomorphology in muddy coast of the Yellow River Delta

PENG Jun1, MA Suisui1, CHEN Hongquan1, LI Zhiwen2   

  1. 1. School of Urban and Resources Environment, Yancheng Teachers University, Yancheng 224000, Jiangsu, China;
    2. College of Earth Sciences, East China Institute of Technology, Nanchang 200062, China
  • 收稿日期:2012-10-21 修回日期:2012-11-15 出版日期:2013-06-15 发布日期:2013-06-15
  • 作者简介:Peng Jun (1980-), Ph.D and Lecturer, specialized in marine geology and sedimentary dynamics. E-mail: ipengjun2010@sina.com
  • 基金资助:

    National Natural Science Foundation of China, No.41201006

Temporal and spatial evolution of coastline and subaqueous geomorphology in muddy coast of the Yellow River Delta

PENG Jun1, MA Suisui1, CHEN Hongquan1, LI Zhiwen2   

  1. 1. School of Urban and Resources Environment, Yancheng Teachers University, Yancheng 224000, Jiangsu, China;
    2. College of Earth Sciences, East China Institute of Technology, Nanchang 200062, China
  • Received:2012-10-21 Revised:2012-11-15 Online:2013-06-15 Published:2013-06-15

摘要:

Based on measured data of coastline and bathometry, processed by softwares of Surfer and Mapinfo, and combined with sediment loads in different phases at Lijin gauging station, temporal and spatial evolution of coastline and subaqueous geomorphology in muddy coast of the Yellow River Delta is analyzed. The results show that ~68% of sediments were delivered by the Yellow River deposited around the river mouth and in the littoral area from 1953 to 2000. Coastline in different coasts had distinctive changes in response to shifts of river course. Coastline was stable in the west of the Diaokou river mouth. Coastline from the east of the Diaokou river mouth to the north of the Gudong oilfield had experienced siltation, then serious erosion, and finally kept stable with sea walls conservation. Generally, coastline of the survived river mouth of the Qingshuigou river course stretched seaward, whereas the south side of sand spit at the Qingshuigou old river mouth was eroded after the Yellow River inpouring near the position at the Qing 8. The subaqueous geomorphology off the survived river mouth exhibited siltation from 1976 to 1996, with flat topset beds and steeper foreset beds. From 1996 to 2005, the subaqueous geomorphology off the Qingshuigou old river mouth was eroded in the topset and foreset beds, but silted in the bottomset beds. The subaqueous geomorphology off the new river mouth sequentially performed siltation with small degree compared to that of 1976-1996.

关键词: Yellow River Delta, coastline, river mouth, subaqueous geomorphology, evolution

Abstract:

Based on measured data of coastline and bathometry, processed by softwares of Surfer and Mapinfo, and combined with sediment loads in different phases at Lijin gauging station, temporal and spatial evolution of coastline and subaqueous geomorphology in muddy coast of the Yellow River Delta is analyzed. The results show that ~68% of sediments were delivered by the Yellow River deposited around the river mouth and in the littoral area from 1953 to 2000. Coastline in different coasts had distinctive changes in response to shifts of river course. Coastline was stable in the west of the Diaokou river mouth. Coastline from the east of the Diaokou river mouth to the north of the Gudong oilfield had experienced siltation, then serious erosion, and finally kept stable with sea walls conservation. Generally, coastline of the survived river mouth of the Qingshuigou river course stretched seaward, whereas the south side of sand spit at the Qingshuigou old river mouth was eroded after the Yellow River inpouring near the position at the Qing 8. The subaqueous geomorphology off the survived river mouth exhibited siltation from 1976 to 1996, with flat topset beds and steeper foreset beds. From 1996 to 2005, the subaqueous geomorphology off the Qingshuigou old river mouth was eroded in the topset and foreset beds, but silted in the bottomset beds. The subaqueous geomorphology off the new river mouth sequentially performed siltation with small degree compared to that of 1976-1996.

Key words: Yellow River Delta, coastline, river mouth, subaqueous geomorphology, evolution