Survey and monitoring of landslide displacements by means of L-band satellite SAR interferometry

被引:217
作者
Strozzi, T
Farina, P
Corsini, A
Ambrosi, C
Thüring, M
Zilger, J
Wiesmann, A
Wegmüller, U
Werner, C
机构
[1] Gamma Remote Sensing, CH-3073 Gumlingen, Switzerland
[2] Univ Florence, Dipartimento Sci Terra, I-50121 Florence, Italy
[3] Univ Modena, Dipartimento Sci Terra, I-41100 Modena, Italy
[4] Univ Appl Sci So Switzerland, Inst Earth Sci, CH-6952 Canobbio, Switzerland
[5] Teledata GeoConsult GmbH Srl, I-39100 Bolzano, Italy
关键词
landslide displacement investigation; SAR interferometry; L-band; Swiss and Italian Alps;
D O I
10.1007/s10346-005-0003-2
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
This paper illustrates the capabilities of L-band satellite SAR interferometry for the investigation of landslide displacements. SAR data acquired by the L-band JERS satellite over the Italian and Swiss Alps have been analyzed together with C-band ERS-1/2 SAR data and in situ information. The use of L-band SAR data with a wavelength larger than the usual C-band, generally considered for ground motion measurements, reduces some of the limitations of differential SAR interferometry, in particular, signal decorrelation induced by vegetation cover and rapid displacements. The sites of the Alta Val Badia region in South Tyrol (Italy), Ruinon in Lombardia (Italy), Saas Grund in Valais (Switzerland) and Campo Vallemaggia in Ticino (Switzerland), representing a comprehensive set of different mass wasting phenomena in various environments, are considered. The landslides in the Alta Val Badia region are good examples for presenting the improved performance of L-band in comparison to C-band for vegetated areas, in particular concerning open forest. The landslides of Ruinon, Saas Grund, and Campo Vallemaggia demonstrate the strength of L-band in observing moderately fist displacements in comparison to C-band. This work, performed with historical SAR data from a satellite which operated until 19 8, demonstrates the capabilities of future planned L-band SAR missions, like ALOS and TerraSAR-L, for landslide studies.
引用
收藏
页码:193 / 201
页数:9
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