Investigation of Antarctic iceberg distribution based on SAR images

doi:10.13878/j.cnki.jnuist.2020.02.011

2025-5-30- 23

Home > Archive>Volume 12, Issue 2, 2020 >231-235. DOI:10.13878/j.cnki.jnuist.2020.02.011

Investigation of Antarctic iceberg distribution based on SAR images
DOI:
                        10.13878/j.cnki.jnuist.2020.02.011
                    
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                        LI TianLI Tian
State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875;School of Geospatial Engineering and Science, Sun Yat-sen University, Zhuhai 519000
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CHENG XiaoCHENG Xiao
State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875;School of Geospatial Engineering and Science, Sun Yat-sen University, Zhuhai 519000;University Corporation for Polar Research, Beijing 100875;Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai), Zhuhai 519000
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GUAN ZhenfuGUAN Zhenfu
State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875;University Corporation for Polar Research, Beijing 100875
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LIU YanLIU Yan
State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875;University Corporation for Polar Research, Beijing 100875;Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai), Zhuhai 519000
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Clc Number:TN957.52;P941.6
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Abstract:

In the context of global warming,the calving events of Antarctic ice shelves are becoming more and more frequent.The icebergs calved from ice shelves are an active component of Antarctic ice sheet-ice shelf-ocean system,while the drifting characteristics and temporal-spatial distribution of icebergs are very important in Antarctic ocean currents,ecology and hydrology.To better understand the underlying relationship between Antarctic icebergs and global climate change,it is essential to investigate the icebergs' drifting characteristics,mass loss due to calving and melting,icebergs distribution,and the interaction between icebergs and the ocean.Based on the object-oriented multiscale image segmentation algorithm of Easy Interpretation software,a total of 32 267 Antarctic icebergs in coastal waters with area larger than 0.06 km² were extracted from 63 ENVISAT ASAR images acquired in August 2006.The spatial distribution characteristics of icebergs were also analyzed,and it is found that small-sized icebergs play an important role in freshwater flux into the Southern Ocean.

Key words:Antarctica;iceberg;ENVISAT ASAR;multiscale segmentation

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LI Tian, CHENG Xiao, GUAN Zhenfu, LIU Yan. Investigation of Antarctic iceberg distribution based on SAR images[J]. Journal of Nanjing University of Information Science & Technology,2020,12(2):231-235

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Received:October 22,2019
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Online: April 08,2020
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