Study on Spatial Characteristics of Sea Ice Reserves in Liaodong Bay of China

摘要

The sea ice reserves in Liaodong Bay at periods of winter 1999/2000 was estimated using remote sensing. The ice thickness was estimated based on the exponent relationship between ice thickness and its reflectivity, The ice area was obtained by NOAA/AVHRR data at channel 1. To understand the distribution of sea ice reserves, Liaodong Bay was divided into 11 regions and each region was further subdivided into 5 plots in terms of the topographic trend and the distance from coast. The sea ice at the reserves was statistically counted for each plot over different periods. The maximum ice reserve in a normal ice year during the period of grand ice in a natural environment is 30X10~8 m~3, with the center of maximum ice thickness moving from the center of the sea to the eastern coast with the passing of a specific ice period. More ice reserves are distributed on the eastern coast of Liaodong Bay located in the regions between Ying-Kou and Xiong-Yue, and the western coastal regions around Xing-Cheng, whichmake up 30%-50% of the total ice reserves within Liaodong Bay. These regions are in the best positions to be set up as exploited bases. With respect to the increasing distance from the coast, the sea ice reserves decreased in the eastern coast, increasing slightly to the western coast.