渤海海底地形特征  

Features of Seafloor Topography in the Bohai Sea

作　　者：陈义兰[1] 吴永亭[1,2] 刘晓瑜[1] 周兴华[1] 雷宁[3] 

机构地区：[1]国家海洋局第一海洋研究所,山东青岛266061 [2]武汉大学测绘学院,湖北武汉430070 [3]山东科技大学测绘学院,山东青岛266590

出　　处：《海洋科学进展》2013年第1期75-82,共8页Advances in Marine Science

基　　金：中国近海海洋综合调查与评价专项--我国近海海底地形地貌调查研究成果集成(908-ZC-I-07)

摘　　要：基于2004—2010年渤海海底地形地貌调查资料,结合前人对渤海海底地形的认识,对渤海海底地形5个区(辽东湾、渤海湾、莱州湾、渤海中央盆地和渤海海峡)的地形及微地形,进行了全面的分析描述。并与1985年出版的渤海地形图进行比较,寻找渤海地形近几十年来的变化并分析其原因。分析表明:渤海海底地形平缓,从辽东湾、渤海湾和莱州湾三个海湾向渤海中央盆地及东部渤海海峡倾斜,平均水深18m;由于环境变化和人类活动,导致部分近岸海域的水深比40多a前的水深变浅,而渤海中央盆地发生侵蚀,水深加深。Based on the topographical and geomorphological data obtained in the surveys carried out in the Bohai Sea from 2004 to 2010 and by combining with previous studies as well, the seafloor topography and typical micro-topography in five topographical regions （the Liaodong Bay, the Bohai Bay, the Laizhou Bay, the Bohai Central Basin and the Bohai Strait） divided in the Bohai Sea are described in detail and com- pared to the topographical map of the Bohai Sea published in 1985, trying to find the changes in the sea- floor topography in the last decades years and to analyze their causes. The results show that the seafloor of the Bohai Sea is quite flat, with a gentle tilt being from the Liaodong Bay, the Bohai Bay and the Laizhou Bay toward the Bohai Central Basin and the Bohai Strait located in the east. The averaged water depth is 18m. Compared with the water depth over forty years ago, the present water depth in parts of the coastal area becomes shallower due to environmental changes and human activities. In the Bohai Central Basin, however, the water depth becomes deeper due to the erosion there.

关 键 词：渤海 海底地形 演变 

分 类 号：P736.4[天文地球—海洋地质]