Holocene sediment accumulation on the Bohai Sea: depocenters, sediment sources, and oceanic and tectonic influences

The Holocene sediment centers on continental shelves recorded rich information that have great value for revealing the shelf sea environment, climate change and human activities. Different from most shelf seas, the Bohai Sea is a highly enclosed sea with unique geologic setting, which make it as an ideal place to study river sediment dispersion, transport and deposition on the shelf. However, it is still unclear whether there are depocenters in the Bohai Sea, and if there are, what factors control their formation and development. In this paper, we used these data to clarify the Holocene sediment centers and the sediment budget. we identified four large Holocene sediment centers on the Bohai Sea, which account for more than ~36% of the total amount of sediments. The formation and development of these Holocene sediment centers were controlled by tectonic movements and oceanic dynamics. The Holocene sediments on the Bohai Sea shelf mainly come from the surrounding rivers, especially from the Yellow River, and partially from the Bohai Strait area (~23%). The preliminary estimate shows that approximately half of the sediments dispersed from the estuaries were preserved on the Bohai Sea shelf, and the rest were transported to the Yellow Sea.

The unit of the thickness is meter and the cell is 500m*500m. Data format is as follows:
Longitude Latitude thickness
117.7677836 38.6716941 8.54
117.7677836 38.6761964 8.46
The unit of the thickness is cm/ka and the cell is 500m*500m. Data format is as follows:
Longitude Latitude sedimentary rate
117.7677836 38.6716941 94.90
117.7677836 38.6761964 94.04

全新世沉积物主要集中于大陆架，其中记录了丰富的信息，对于揭示架海环境、气候变化及人类活动具有重要意义。与大多数架海相比，渤海是一个高度封闭的海洋，具有独特的地质环境，使其成为研究架海上河流沉积物扩散、运输和沉积的理想场所。然而，关于渤海是否存在沉积中心，以及若有，其形成和发展的控制因素仍不明确。在本文中，我们利用这些数据来阐明全新世沉积中心及其沉积预算。我们在渤海地区识别出四个大型全新世沉积中心，其占总沉积物量的比例超过 ~36%。这些全新世沉积中心的形成和发展受构造运动和海洋动力学的影响。渤海架上的全新世沉积物主要来源于周边河流，尤其是黄河，部分来自渤海海峡地区（~23%）。初步估计显示，从河口扩散出的沉积物中，约有一半保存在渤海架上，其余则被运送到黄海。沉积厚度的单位为米，单元格大小为500m*500m。数据格式如下：
经度 纬度 厚度
117.7677836 38.6716941 8.54
117.7677836 38.6761964 8.46
沉积厚度的单位为厘米/千年前，单元格大小为500m*500m。数据格式如下：
经度 纬度 沉积速率
117.7677836 38.6716941 94.90
117.7677836 38.6761964 94.04