【摘要】 利用平面二维数值模型 ,计算了渤海海峡沉积速率的平面分布 ,计算结果与210Pb测年数据较为一致。渤海海峡中部泥区是现代泥质沉积区 (堆积速率<2mm/a) ,沉积速率分布趋势为南高北低 ;山东半岛北部近岸泥区的堆积速率在1mm/a以下。研究区西北部为海底冲刷区 ,其中渤海海峡北侧的老铁山水道附近为最强冲刷区 ,冲刷速率高达9mm/a。更多还原

【Abstract】 A 2 D horizontal numerical model is used to derive the distribution patterns of deposition rates over the Bohai Strait region. The results obtained are comparable to the data by 210Pb analysis. According to the model output, the Central Mud of the study area is a modern mud deposit (with accretion rates being below 2 mm/a) and the accretion rate is higher in the south than in the north of the mud patch; erosion occurs at the edge of the mud patch. In the mud belt off the coast of northern Shandong Peninsula, the accretion rate is below 1 mm/a. Over the north western Bohai Strait area, an intense erosion area is found within the Lao Tie Shan channel on the northern side of the Bohai Strait, with a maximum erosion rate exceeding 9 mm/a.更多还原