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Process oriented use of geostatistics to analyse creeping para-glacial features
- Source :
- Earth Surface Processes and Landforms. 40:1191-1201
- Publication Year :
- 2015
- Publisher :
- Wiley, 2015.
-
Abstract
- Complex para-glacial systems may show signs of destabilization leading to frequent and potentially hazardous debris-flows. Understanding creeping permafrost displacement over a period of time is therefore crucial for hazard management and risks assessment. This paper presents our methodology for estimating creeping permafrost displacement based upon data derived from various survey methods and demonstrates its relevance on the Glacier Bonnard system in southern Switzerland. Geostatistical processing allowed estimation of the displacement intensity over the area of interest, as well as assessment of the interpolation quality. Although the local measurement network needs to be refined, the results largely improve the understanding of the Bonnard para-glacial system, though highlighting the need to locally refine the measurement network. In the present case, the destabilized front advances at ~1 m/a and the upstream creeping part at ~0.4 m/a. Variance analysis also provide objective thresholds that could be used to distinguish underlying physical processes. Copyright © 2015 John Wiley & Sons, Ltd.
- Subjects :
- Upstream (petroleum industry)
geography
geography.geographical_feature_category
business.industry
Geography, Planning and Development
Environmental resource management
Glacier
Geostatistics
Permafrost
Displacement (vector)
Earth and Planetary Sciences (miscellaneous)
Relevance (information retrieval)
Glacial period
business
Geomorphology
Geology
Earth-Surface Processes
Interpolation
Subjects
Details
- ISSN :
- 01979337
- Volume :
- 40
- Database :
- OpenAIRE
- Journal :
- Earth Surface Processes and Landforms
- Accession number :
- edsair.doi...........62167d8b29865647381fd18209f9f313