Cosmo-SkyMed X-band SAR data for classification of ice-free areas and glacier facies on Potter Peninsula, King George Island Antarctica

被引:4
作者
de Andrade, Andre Medeiros [1 ]
Arigony-Neto, Jorge [2 ]
Bremer, Ulisses Franz [1 ]
Machado Michel, Roberto Ferreira [3 ]
Fassoni-Andrade, Alice Cesar [1 ]
Goncalves Reynaud Schaefer, Carlos Ernesto [4 ]
Simoes, Jefferson Cardia [1 ]
机构
[1] Univ Fed Rio Grande do Sul, Ctr Polar & Climat, Porto Alegre, RS, Brazil
[2] Univ Fed Rio Grande, Lab Monitoramento Criosfera, Rio Grande, Brazil
[3] Univ Estadual Santa Cruz, Nucleo Terrantar, Ilheus, Brazil
[4] Univ Fed Vicosa, Nucleo Terrantar, Vicosa, MG, Brazil
关键词
Maximum likelihood; remote sensing; SAR image;
D O I
10.1080/10106049.2015.1077899
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The climate change phenomena have been influencing terrestrial and glacial ecosystems around the planet. Maritime Antarctica is especially sensitive to these climate variations and over the last 50years increasing global air temperatures have caused extensive glacial retreat. The objective of this study is to evaluate the potential use of the SAR technology in monitoring the surface dynamics of the Potter Peninsula, King George Island, maritime Antarctica. An image generated by the SAR satellite COSMO-SkyMed, obtained on 2 February 2011, was used to extract the backscattering values of targets on the surface for further processing and classification, using a supervised statistic classifier of maximum likelihood for the determination of the surface classes. The average backscattering of water bodies presented high similarity, which made its separation unattainable. On the other hand, the surface classes' bare ice and wet snow over the glacier presented distinct average backscattering values, which allowed an efficient and precise classification using only this parameter. The classification process showed satisfactory results for periglacial environments, presenting high fidelity to the field data.
引用
收藏
页码:803 / 812
页数:10
相关论文
共 14 条
[1]  
Albright TP, 1998, J GEOPHYS RES, V103
[2]   A time series of SAR data for monitoring changes in boundaries of glacier zones on the Antarctic Peninsula [J].
Arigony-Neto, Jorge ;
Rau, Frank ;
Saurer, Helmut ;
Jana, Ricardo ;
Simoes, Jefferson Cardia ;
Vogt, Steffen .
ANNALS OF GLACIOLOGY, VOL 46, 2007, 2007, 46 :55-+
[3]   Spatial and temporal changes in dry-snow line altitude on the Antarctic Peninsula [J].
Arigony-Neto, Jorge ;
Saurer, Helmut ;
Simoes, Jefferson C. ;
Rau, Frank ;
Jana, Ricardo ;
Vogt, Steffen ;
Gossmann, Hermann .
CLIMATIC CHANGE, 2009, 94 (1-2) :19-33
[4]  
Bölter M, 2002, ECOL STU AN, V154, P17
[5]  
Braun M, 2002, ECOL STU AN, V154, P75
[6]   A COEFFICIENT OF AGREEMENT FOR NOMINAL SCALES [J].
COHEN, J .
EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT, 1960, 20 (01) :37-46
[7]   Use of COSMO-SkyMed imagery for recognition of geomorphological features in the Martel Inlet ice-free areas, King George Island, Antarctica [J].
da Rosa, Katia Kellem ;
Mendes, Claudio Wilson, Jr. ;
Vieira, Rosemary ;
Arigony-Neto, Jorge ;
Simoes, Jefferson Cardia .
INTERNATIONAL JOURNAL OF REMOTE SENSING, 2013, 34 (24) :8936-8951
[8]  
DelValle R.A., 2004, REV ASOCIACION GEOL, V59, P443
[9]  
Ferron F A., 2004, Pesq Antart Bras, V4, P155
[10]   COSMO-SKYMED AO PROJECTS - TIDAL DEFLECTION CHARACTERISTICS OF CAMPBELL GLACIER, EAST ANTARCTICA, OBSERVED BY DOUBLE DIFFERENTIAL SAR INTERFEROMETRY [J].
Han, Hyangsun ;
Lee, Hoonyol .
2012 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS), 2012, :4465-4468