中文摘要：

渤海是一个伸入中国大陆内部的半封闭内陆海域。在气候变暖导致全球性海平面上升的大背景下,不少学者认为渤海海域处于一个海平面上升的趋势中,认为渤海地区正处于一个海进的过程中。以1992年渤海南部调查得到的水深数据和2006年公布的渤海水深数据为基础,分析了近20年来黄河三角洲地区20多条长期观测断面的水深变化数据,通过对比分析指出,近20年来,渤海南部水深在变浅。在综合分析了渤海南部海域沉积输入、构造沉降、海平面变化等数据后,得出渤海南部水深变浅的速率在0.44-3.49 cm/a之间。

英文摘要：

The Bohai Sea is a marginal inland sea,enclosed by Shandong Peninsula in the South,Liaoning Peninsula in the North and the Yanshan mountains in the North-West.On the background of global climate warming,the Bohai Sea is believed under a trend of sea level rising or marine transgression.Based on the water depth data obtained from the south of the Bohai Sea by the investigation cruise in 1992,and the water depth data of 2006,and also long term water depth data of 20 observation sections covering the Yellow River delta area,the authors found that over the past 20 years,the water depth of the southern Bohai sea is getting shallower.Considering the comprehensive effects of sediment input,basin subsidence,and sea level rising in the south of Bohai Sea,this paper concluded that the water depth of the south Bohai Sea is gradually decreasing at the rate of between 0.44-3.49 cm/a in recent 20 years and the Bohai Sea is in a process of land advancing.