The evolutionary process of the geomorphology of tidal embayments in southern Jiaodong Peninsula, China
The evolutionary process of the geomorphology of tidal embayments in southern Jiaodong Peninsula, China
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胶东半岛南部潮汐海湾地貌演化过程
DOI：
10.1016/j.ecss.2017.06.016
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发表时间：
2017-07
期刊：
影响因子：
--
通讯作者：
Chu Xiaojing
中科院分区：
文献类型：
--
作者：
Zhan Chao;Yu Junbao;Wang Qing;Li Yunzhao;Zhou Di;Xing Qinghui;Chu Xiaojing
以胶东半岛南岸典型海湾为研究对象，运用遥感和地理信息系统（GIS）技术，以潮落不对称理论为基础，研究了近40年来胶东半岛南岸典型海湾沿着的地貌演变。结果表明，随着时间的推移，海湾内的潮滩和潮汐汊道等海岸特征发生了显着变化。研究的海湾是在一个环形的地貌空间格局，其特点是浅水，他们同心环形潮滩和海岸平原在20世纪80年代初之前。然而，后来在沿海平原和滩涂之间出现了许多池塘。1980年代各海湾的沉积物填充程度均大于1970年代。研究期间，四个海湾的平滩型河口转化和潮汐型河口的冲淤变化并不同步。各海湾处于洪水不对称状态，净细颗粒泥沙和净粗颗粒泥沙均发生在20世纪70年代。20世纪60年代末至80年代初，丁字湾具有洪水不对称性特征，其潮汐不对称比增大。静海湾和五雷岛湾处于洪水不对称状态，潮汐不对称率减小，乳山湾处于由洪水不对称向落潮不对称的过渡状态。然而，近30年来人类活动的加剧，特别是沿岸塘的建设，极大地改变了这些海湾的水文和沉积作用，使海湾的地貌特征发生了深刻的变化，并引导了海湾的演化过程。研究结果表明，人类活动是导致丁字湾潮滩地貌演变的关键因素，尤其是丁字湾潮滩从涨潮不对称到落潮不对称的突变。
Based on the theory of flood/ebb asymmetry, the evolution of the geomorphology of representative bays along the southern coast of the Jiaodong Peninsula over the last 40 years was investigated using remote sensing and geographic information system technologies. The results showed that coastal features such as tidal flats and tidal inlets in the bays changed significantly over time. The studied bays are in a ring-shaped geomorphic spatial pattern characterized by shallow water, and they were concentrically ringed by tidal flats and coastal plains before the early 1980s. Later, however, a number of ponds appeared between the coastal plains and tidal flats. The extent of sediment infill for each bay in the 1980s was greater than that in the 1970s. The conversion of flat-inlets and the erosion/deposition change of tidal inlets in these four bays during study period were not synchronized. Each bay was in a state of flood asymmetry, and both the net fine and net coarse sediment deposition took place in the 1970s. From the late 1960s to the early 1980s, Dingzi Bay was characterized by flood asymmetry, and its tidal asymmetry ratio increased. The Jinghai and the Wuleidao bays were in a state of flood asymmetry, and their tidal asymmetry ratios decreased, while Rushan Bay was in a transition state from flood to ebb asymmetry. However, intensive human activities over the last 30 years, especially the construction of coastal ponds, has greatly changed the hydrology and sedimentation of these bays, causing profound changes in geomorphic features; furthermore, these changes have guided the evolutionary process of the bays. Our results suggest that the intensive human activities were key factors that caused changes in the geomorphic evolution of the studied tidal embayments, especially the sudden change from a state of rising flood asymmetry to ebb asymmetry in Dingzi Bay.
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影响因子：
5.9
作者：
J. Dronkers
通讯作者：
J. Dronkers
影响因子：
4.5
作者：
Alexandre Augusto Oliveira Santos;J. Aubin;J. Aubin;M. Corson;M. Corson;W. Valenti;A. F. Camargo
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Alexandre Augusto Oliveira Santos;J. Aubin;J. Aubin;M. Corson;M. Corson;W. Valenti;A. F. Camargo
DOI：
--
发表时间：
1998
期刊：
World Sci-tech R & D
影响因子：
--
作者：
Gao Shu
通讯作者：
Gao Shu
影响因子：
2.3
作者：
S. Plecha;P. Silva;N. Vaz;X. Bertin;Anabela Oliveira;A. Fortunato;J. Dias
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S. Plecha;P. Silva;N. Vaz;X. Bertin;Anabela Oliveira;A. Fortunato;J. Dias
DOI：
--
发表时间：
1997
期刊：
Oceanographic Literature Review
影响因子：
--
作者：
R. Soulsby
通讯作者：
R. Soulsby