文献类型：期刊文献

英文题名：Fragmentation patterns of Antarctic icebergs in sea ice: observations and statistical data

作者：Guan, Zhenfu[1,2,3];Liu, Yan[4];Cheng, Xiao[1,2,3];Li, Teng[1,2,3];Shokr, Mohammed[5];Liu, Xuying[6];Wang, Shaoyin[1,2,3];Zheng, Lei[1,2,3];Chen, Zilong[1,2,3]

机构：[1]Sun Yat Sen Univ, Sch Geospatial Engn & Sci, Zhuhai 519082, Peoples R China;[2]Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China;[3]Sun Yat Sen Univ, Key Lab Comprehens Observat Polar Environm, Minist Educ, Zhuhai 519082, Peoples R China;[4]Beijing Normal Univ, Fac Geog Sci, State Key Lab Remote Sensing & Digital Earth, Beijing, Peoples R China;[5]Environm Canada, Sci & Technol Branch, Toronto, ON, Canada;[6]Shaoxing Univ, Inst Artificial Intelligence, Shaoxing, Peoples R China

年份：2025

卷号：18

期号：1

外文期刊名：INTERNATIONAL JOURNAL OF DIGITAL EARTH

收录：SCI-EXPANDED(收录号：WOS:001498815300001)、、EI(收录号：20252218537249)、Scopus(收录号：2-s2.0-105006919644)、WOS

基金：This work was supported by the National Natural Science Foundation of China (No. 42276246, No. 42206249, No. 41925027).

语种：英文

外文关键词：Antarctica icebergs; iceberg fragmentation; sea ice; Southern Ocean

外文摘要：Fragmentation is a key process in Antarctic iceberg decay, influencing the Antarctic climate and ecosystems. However, iceberg fragmentation has not been quantified at the pan-Antarctic scale. Using Sentinel-1 data from August to October 2019, we identified 407 fragmentation events in the circum-Antarctic near-coastal zone, with original iceberg sizes ranging from 0.01 km(2) to 5591.34 km(2). The Indian Ocean sector had the greatest number of fragmented events, 97% of which involved icebergs less than 1 km(2), whereas the Bellingshausen-Amundsen Sea sector has experienced the highest number of fragmentation events involving medium to large icebergs. Smaller icebergs (less than 1 km(2)) were more susceptible to disintegration through highly fractured capsizing, whereas larger icebergs underwent disarticulation. Fragmentation events were less frequent in landfast ice or m & eacute;lange (similar to 0.5% monthly), whereas icebergs exceeding 10 km(2) exhibited a notable increase in the ratio of fragmentation events to the total number of icebergs (more than 15% monthly) when they were in motion and rotating in pack ice. Our findings indicate that during winter and under extensive sea ice cover, internal ocean waves, ocean currents and collisions are key factors influencing iceberg fragmentation.