极地研究2016，Vol.28Issue(1)：67-79,13.DOI:10.13679/j.jdyj.2016.1.067
2011／2012年夏季南极半岛北端周边海域的水团与水交换
WATER MASSES AND EXCHANGES IN THE REGION AROUND THE NORTHERN TIP OF THE ANTARCTIC PENINSULA OBSERVED IN SUMMER 2011/2012
摘要
Abstract
Water masses and exchanges in the region around the northern tip of the Antarctic Peninsula were analyzed based on temperature and salinity profile data observed along 5 sections during the 28th Chinese National Antarctic Research Expedition in December 2011 to January 2012.The Weddell Deep Water ( WDW) with significant warm core, the Weddell Sea Deep Water (WSDW) and Weddell Sea Bottom Water (WSBW,with potential temperature less than -0.7℃) with neutral density greater than 28.27 kg· m-3 were found in the southern deep area of ob-serving region , especially in Powell Basin .The WDW on the surrounding slope showed relative weaker core charac-teristics because of mixing with peripheral waters .In some locations with complex bottom topography , such as the Philip Ridge and Hesperides Trough , stronger mixing and thermohaline intrusion occurred at the WDW layer . WDW with a deeper saline core at 1 500 db, overlaid by warm water with vertically uniform temperature and salini-ty, was observed to the northeast of Elephant Island , indicating that the WDW might have come from different sources and undergone different modifications .No Circumpolar Deep Water was found in the Bransfield Strait;how-ever, some mesoscale processes , such as eddies on the shelf near King George Island , could influence exchange between the Drake Passage and Bransfield Strait .关键词
水团/环流/南极半岛/南设得兰群岛/南奥克尼海台Key words
water mass/circulation/Antarctic Peninsula/South Shetland Islands/South Orkney Plateau引用本文复制引用
史久新,孙永明,矫玉田,郝光华,王妙..2011／2012年夏季南极半岛北端周边海域的水团与水交换[J].极地研究,2016,28(1):67-79,13.基金项目
国家海洋局“南北极环境综合考察与评估”专项项目(CHINARE2014-01-01, CHINARE2014-04-01)资助 （CHINARE2014-01-01, CHINARE2014-04-01）
