Safety Factors Map
The computation is based on 2D static mechanical analysis using methods of slices, carried out on every topographical profile (cross section of a hillslope) over the study area. The safety factor (SF) is equal to the ratio of shear stress to the shear strength required for equilibrium. The SF is an overall measure of stability: SF smaller than 1 is equivalent to instability. The probability of landsliding is the probability of SF being smaller than 1.
The data are delivered by a a Web Processing Service.
Service Url
http://envision-wps.brgm-rec.fr/WPS.NET/WPService.asmx/WPS
Requests
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GetCapabilities: [Link]
http://envision-wps.brgm-rec.fr/WPS.NET/WPService.asmx/WPS?service=WPS&version=1.0.0&request=getcapabilities -
DescribeProcess: [Link]
http://envision-wps.brgm-rec.fr/WPS.NET/WPService.asmx/WPS?service=WPS&version=1.0.0&request=describeprocess&identifier=ProbabilitiesLSComputation -
Execute:
- Download an example of request
- Use POST to make a request.
Description of the service
(219KB)Alternative service
For testing purpose without asynchronous mechanism, a second process have been set up in synchronous mode. This service is limited to some specific values as input.
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DescribeProcess: [Link]
http://envision-wps.brgm-rec.fr/WPS.NET/WPService.asmx/WPS?service=WPS&version=1.0.0&request=describeprocess&identifier=ProbaLSComputationSync -
Execute:
- Download an example of request (w/o DEM)
- Download an full example of request
- Use POST to make a request.