南极中山站附近海域水深地形特征

WATER DEPTH AND TOPOGRAPHY FEATURES OF THE SEA AREA NEARBY ANTARCTIC ZHONGSHAN STATION

南极普里兹湾是我国南极中山站建站的重要依托海域 ,是科考船前往中山站进出的必由之路。本文根据普里兹湾近岸的中山站附近海域概略水深 ,研究分析了地形基本概况 ,崎岖不平的中山站近海湾部水下地形 ,沿其湾顶部轴线SN向形成了一条绵延弯曲的水深达 80 0m以浅的海底峡谷 ,通往冰盖底部。峡谷两侧地形复杂 ,水下丘岭嶙峋。从冰盖沿峡谷崩裂下来的冰山 ,最终依其适宜的水深 ,绕过地形障碍 ,沿海底峡谷西侧随风和流往西离去。除中山锚地抛锚区域属于浅水低洼的平缓台地外 。

The Prydz Bay in the Antarctic,the important supporting sea area when China built Zhongshan Station, is the only way that research ship passes in and out Zhongshan Station. In this paper, according to the sketch of the depth of the water in the Prydz Bay alongshore,we research and analyse the general situation of the topography. The underwater topography in the Prydz Bay is rugged and rough. By the SN direction from the top of the bay,it formed a sea-floor canyon,about 800m depth,which is continuous to the bottom of the ice sheet. The topography of the both sides of the canyon is complicate,and the underwater hills are jagged. In finally,with the suitable depth of water,ice berg which breaks apart from the canyon bypasses the obstacle of the topography,goes away with the wind and ocean current to the west by the canyon.There are few advantageous topography for research ships dropping anchor at the other sea area in the gulf,except the place named Zhongshan Anchorage where ships may drop anchor which is the shallow water of flat ground.