Landslide susceptibility mapping using downscaled AMSR-E soil moisture: A case study from Cleveland Corral, California, US

REMOTE SENSING OF ENVIRONMENT

卷:114

Article

Ray, Ram L.¹  Jacobs, Jennifer M.²  Cosh, Michael H.³ 

[1] San Diego State Univ, Dept Civil & Construct Engn, San Diego, CA 92182 USA

[2] Univ New Hampshire, Dept Civil Engn, Durham, NH 03824 USA

[3] ARS, USDA, Hydrol & Remote Sensing Lab, Beltsville, MD 20705 USA

关键词: AMSR-E;    Remote sensing;    VIC-3L;    Landslide;    Soil moisture;    Slope stability;   

DOI  :  10.1016/j.rse.2010.05.033

来源: Elsevier

【 摘 要 】

As soil moisture increases, slope stability decreases. Remotely sensed soil moisture data can provide routine updates of slope conditions necessary for landslide predictions. For regional scale landslide investigations, only remote-sensing methods have the spatial and temporal resolution required to map hazard increases. Here, a dynamic physically-based slope stability model that requires soil moisture is applied using remote-sensing products from multiple Earth observing platforms. The resulting landslide susceptibility maps using the advanced microwave scanning radiometer (AMSR-E) surface soil moisture are compared to those created using variable infiltration capacity (VIC-3L) modeled soil moisture at Cleveland Corral landslide area in California, US. Despite snow cover influences on AMSR-E surface soil moisture estimates, a good relationship between the downscaled AMSR-E's surface soil moisture and the VIC-3L modeled soil moisture is evident. The AMSR-E soil moisture mean (0.17 cm(3)/cm(3)) and standard deviation (0.02 cm(3)/cm(3)) are very close to the mean (0.21 cm(3)/cm(3)) and standard deviation (0.09 cm(3)/cm(3)) estimated by VIC-3L model. Qualitative results show that the location and extent of landslide prone regions are quite similar. Under the maximum saturation scenario, 0.42% and 0.49% of the study area were highly susceptible using AMSR-E and VIC-3L model soil moisture, respectively. (C) 2010 Elsevier Inc. All rights reserved.

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