黄、渤海表层沉积物中钙质超微化石分布规律与黄海暖流流路

黄、渤海表层沉积物中钙质超微化石有较广泛分布,属种较大洋和开阔海少而单调。黄海南部见有14个种,北黄海及渤海海峡4～5个种,渤海沿岸区2～3个种。钙质超微化石分异度D_H以及主要化石种相对百分含量的高值区的主轴线的走向与现代黄海暖流的流路密切相关。得出黄海暖流由南黄海东南部流入北黄海,通过渤海海峡的北侧进入渤海,在渤海中部呈南北向伸展。

The Distributive Law of Calcareous Nannofossil in the Surficial Sediments from the Huanghai Sea and the Bohai Sea And Flow Way of Warm Current in the Huanghai Sea

The calcareous nannofossil has a very extensive distribution in the surficial sediments from the Huanghai and Bohai Seas. But its genus and species are fewer and more monotonic than those in ocean and open sea. Fourteen species are found in the south Huanghai Sea, four to five species in the north Huanghal Sea and the Bohai Sea Strait area, two to three species in the near-shore waters of the Bohai Sea.The trend of the main axis of the high-value area of the Shannon-Wiener Index (D_H) and the relative Content (%) of the principal calcareous nannofossil is closely related to the flow way of the warm current of the Huanghai Sea. It is established that the warm current of the Huanghai Sea flows from the south-east of the south Huanghai Sea to the north Huanghai Sea and enters the Bohai Sea through the north of the Bohai Sea Strait and shows a stretching trend in the direction of north-south in the centre of the Bohai Sea.