极地研究2025，Vol.37Issue(2)：237-250,14.DOI:10.13679/j.jdyj.20230050
阿蒙森海冰架前缘深层水热含量季节变化的影响因素
Factors influencing seasonal variations of deep water heat content in the calving front of the Amundsen Sea ice shelf
摘要
Abstract
Studying the seasonal variations in the heat content of the deep water(depth:>300 m)in the calving front of the Amundsen Sea ice shelves is vital for understanding the seasonal variations in the bottom melt-ing rate of the ice shelves in this region.This understanding further contributes to exploration of the rapid destabilization phenomenon currently occurring in the West Antarctic ice sheet.In this study,the GLORYS12V1 reanalysis dataset was used to analyze the seasonal variations in the heat content of the deep water in the calving front of the Amundsen Sea ice shelves,including the Thwaites ice shelf,Pine Island ice shelf,and Dotson ice shelf.The results of the study revealed the following.(1)The heat content of the deep water in the calving front of the Amundsen Sea ice shelves is higher in spring and summer,and lower in au-tumn and winter.(2)The variations in the heat content of the deep water in the front of the Dotson ice shelf are driven mainly by changes in the thickness of the thermocline(Circumpolar Deep Water thickness)caused by the Ekman suction process.(3)No relationship was found between thermocline depth changes and cu-mulative Ekman suction in the front of the Pine Island and Thwaites ice shelves,suggesting that Ekman suc-tion might not be the dominant factor,but that changes in density might be caused by poleward flow of the Circumpolar Deep Water.关键词
深水热含量/季节变化/阿蒙森海冰架/南极Key words
deep water heat content/seasonal changes/Amundsen Sea ice shelf/Antarctica引用本文复制引用
张艺杰,姚洁,冷恒凌..阿蒙森海冰架前缘深层水热含量季节变化的影响因素[J].极地研究,2025,37(2):237-250,14.基金项目
自然资源部第二海洋研究所基本科研业务费专项项目(JB2304)资助 （JB2304）
