The Movement Track of the Ocean Current in Jiaozhou Bay

Abstract

According to the data on the investigation of Jiaozhou Bay in May, August and October, 1992, the Pb content and the horizontal distribution in the surface of Jiaozhou Bay were studied. The results show that in May, the open ocean current with a high content of Pb entered Jiaozhou Bay surrounding the nearshore waters of the bay. In August, in the waters of Jiaozhou Bay, there was only one high Pb content source - open ocean current transportation. The open ocean current entered Jiaozhou Bay with a high content of Pb. The ocean current passed from the outside of the bay to the inside through the bay mouth with 37.53 μg/L Pb content. Then the ocean current made a circle around the inshore waters of Jiaozhou Bay, bringing a high Pb content zone of 11.30 - 27.44 μg/L. At this point, a low Pb content area of 5.53 μg/L appeared in the central waters of Jiaozhou Bay. So, in August, the open ocean current with a high content of Pb moved into Jiaozhou Bay. Then it surrounded the nearshore waters of the bay. By the authors’ Dongfang Yang’s migration law of material content, it is obtained that the open ocean current with high Pb content moves into Jiaozhou Bay. And with the continuous decrease of Pb content, the flow path of the open ocean current in the bay, illustrated by a model block diagram, is left. Furthermore, the migration law reveals that the unit water body with the ocean current returns to the inlet water in a counterclockwise direction along the inshore water in the bay. Thus, under the combined action of ocean current and tide, this unit of water body shows zigzag movement from east to north and to west along the eastern, northern and western coastal waters of Jiaozhou Bay, leaving the center of the bay barely affected by the unit water. The unit body of water has a circular center in the center of the bay and a zigzag motion along the edges. Moreover, the topography and geomorphology of the bottom of Jiaozhou Bay also confirm the movement track of the ocean current in the waters of Jiaozhou Bay proposed by the authors.