The morphological changes of basal channels based on multisource remote sensing data at the Pine Island Ice Shelf  

作　　者：Xiangyu Song Zemin Wang Jianbin Song Baojun Zhang Mingliang Liu 

机构地区：[1]Key Laboratory of Roads and Railway Engineering Safety Control(Shijiazhuang Tiedao University),Ministry of Education,Shijiazhuang 050043,China [2]School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China [3]Chinese Antarctic Center of Surveying and Mapping,Wuhan University,Wuhan 430079,China [4]First Surveying and Mapping Institute of Hebei Province,Shijiazhuang 050031,China

出　　处：《Acta Oceanologica Sinica》2023年第12期90-104,共15页海洋学报（英文版）

基　　金：The National Natural Science Foundation of China under contract Nos 41941010 and 42006184;the Fundamental Research Funds for the Central Universities under contract No.2042022kf1068;the Independent Scientific Research Project of the State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing.

摘　　要：The basal channel is a detailed morphological feature of the ice shelf caused by uneven basal melting.This kind of specifically morphology is widely distributed in polar ice shelves.It is an important research object of sea-ice interaction and plays a vital role in studying the relationship between the ice sheet/ice shelf and global warming.In this paper,high-resolution remote sensing image and ice penetration data were combined to extract the basal channel of the Pine Island Ice Shelf.The depth variation of Pine Island Ice Shelf in the recent 20 years was analyzed and discussed by using ICESat-1,ICESat-2,and IceBridge data.Combined with relevant marine meteorological elements(sea surface temperature,surface melting days,circumpolar deep water and wind)to analyze the basal channel changes,the redistribution of ocean heat is considered to be the most important factor affecting the evolution and development of the basal channel.

关 键 词：basal channel Pine Island Ice Shelf digital elevation model(DEM) ICESAT IceBridge 

分 类 号：P715.7[天文地球—海洋科学]