TerraSAR-X SAR data for classification of ice-free areas and glacier facies on Fildes Peninsula, King George Island, Antarctica.

IF 1.1 4区 综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES
Anais da Academia Brasileira de Ciencias Pub Date : 2025-01-13 eCollection Date: 2025-01-01 DOI:10.1590/0001-3765202420240362
André M DE Andrade, Roberto F M Michel, Kátia K DA Rosa, Ulisses F Bremer, Carlos Ernesto G R Schaefer, Jefferson C Simões
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引用次数: 0

Abstract

The region of the Maritime Antarctic suffers significantly from climate change, resulting in regional warming and consequently affecting coverage. This study characterized three surface zones of Collins Glacier and three other zones in ice-free areas on the Fildes Peninsula, which has an area of 29.6 km². We used TerraSAR-X satellite images from 2014 to 2016 and analyzed the influence of meteorological and environmental conditions on these surface zones. We used five images from the TerraSAR-X satellite, three of these data were obtained during the same period of fieldwork. The classification considered three classes on the glacier (higher moisture, transition in moisture, and lower moisture) and three on the ice-free areas (wet snow, transition wet snow-bare ice, and bare ice), using Maximum Likelihood and ISODATA methods. In low-altitude glaciers with maritime influence, such as Collins, monitoring variations in surface zones is essential because the continuous increase in exposed ice may indicate potential retreat. The TerraSAR-X images enabled the classification of land features, highlighting the potential for continuous monitoring in the Maritime Antarctic, regardless of weather conditions and solar illumination.

南极洲乔治国王岛菲尔德斯半岛无冰区和冰川相分类的TerraSAR-X SAR数据。
海洋南极区域受到气候变化的严重影响,导致区域变暖,从而影响覆盖范围。本研究对柯林斯冰川的三个表面带和菲尔德斯半岛无冰区的其他三个区域进行了研究,面积为29.6平方公里。我们利用2014 - 2016年的TerraSAR-X卫星图像,分析了气象环境条件对这些地表区域的影响。我们使用了5张来自TerraSAR-X卫星的图像,其中3张数据是在同一时期的野外工作中获得的。使用极大似然和ISODATA方法,该分类考虑了冰川上的三个类别(高湿度、过渡湿度和低湿度)和无冰区的三个类别(湿雪、过渡湿雪-裸冰和裸冰)。在像柯林斯这样受海洋影响的低海拔冰川中,监测地表区域的变化是必不可少的,因为暴露冰的持续增加可能表明潜在的退缩。TerraSAR-X图像能够对陆地特征进行分类,突出了在南极海域进行连续监测的潜力,无论天气条件和太阳光照如何。
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来源期刊
Anais da Academia Brasileira de Ciencias
Anais da Academia Brasileira de Ciencias 综合性期刊-综合性期刊
CiteScore
2.20
自引率
0.00%
发文量
347
审稿时长
1 months
期刊介绍: The Brazilian Academy of Sciences (BAS) publishes its journal, Annals of the Brazilian Academy of Sciences (AABC, in its Brazilianportuguese acronym ), every 3 months, being the oldest journal in Brazil with conkinuous distribukion, daking back to 1929. This scienkihic journal aims to publish the advances in scienkihic research from both Brazilian and foreigner scienkists, who work in the main research centers in the whole world, always looking for excellence. Essenkially a mulkidisciplinary journal, the AABC cover, with both reviews and original researches, the diverse areas represented in the Academy, such as Biology, Physics, Biomedical Sciences, Chemistry, Agrarian Sciences, Engineering, Mathemakics, Social, Health and Earth Sciences.
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