Applying a GIS slope-stability model to site-specific landslide prevention in Honduras. (Research).(geographic information system): An article from: Journal of Soil and Water Conservation
Book Details
Author(s)B.F. Zaitchik, H.M. van Es
PublisherSoil & Water Conservation Society
ISBN / ASINB0008D944W
ISBN-13978B0008D9445
AvailabilityAvailable for download now
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from Journal of Soil and Water Conservation, published by Soil & Water Conservation Society on January 1, 2003. The length of the article is 7105 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.
From the author: Conventional output of an environmental landslide model is some form of a distributed hazard index. Viability of these models has proven to be strong in tested environments, and this has encouraged modelers to apply landslide hazard models to tropical regions that generally lack advanced information systems. For steep-land farmers in the tropics, however, information on relative landslide hazard is useful but not sufficient, as knowledge of primary causes of instability is needed to develop management practices for sustained use of landslide-prone lands. Stability Index Mapping (SINMAP) is a physical slope-stability model in which relative hazard predictions are primarily governed by local slope gradient ([alpha]) and relative wetness (W). This model was applied to an agricultural region of Honduras that suffered extensive landslide damage during Hurricane Mitch, and its stability predictions were empirically evaluated. Zones of predicted instability were subsequently categorized according to [alpha ], derived from the Digital Elevation Model, and W, based on steady-state hydrology for hurricane conditions. W and [alpha] varied in a soil-specific and site-specific manner, indicating that site-specific management strategies are required for slope stabilization in the study area. Knowledge of [alpha] * W in potentially unstable zones allows for informed stability management practices, improving the utility of the hazard model for communities that contend with landslide risk.
Citation Details
Title: Applying a GIS slope-stability model to site-specific landslide prevention in Honduras. (Research).(geographic information system)
Author: B.F. Zaitchik
Publication:Journal of Soil and Water Conservation (Refereed)
Date: January 1, 2003
Publisher: Soil & Water Conservation Society
Volume: 58 Issue: 1 Page: 45(9)
Distributed by Thomson Gale
From the author: Conventional output of an environmental landslide model is some form of a distributed hazard index. Viability of these models has proven to be strong in tested environments, and this has encouraged modelers to apply landslide hazard models to tropical regions that generally lack advanced information systems. For steep-land farmers in the tropics, however, information on relative landslide hazard is useful but not sufficient, as knowledge of primary causes of instability is needed to develop management practices for sustained use of landslide-prone lands. Stability Index Mapping (SINMAP) is a physical slope-stability model in which relative hazard predictions are primarily governed by local slope gradient ([alpha]) and relative wetness (W). This model was applied to an agricultural region of Honduras that suffered extensive landslide damage during Hurricane Mitch, and its stability predictions were empirically evaluated. Zones of predicted instability were subsequently categorized according to [alpha ], derived from the Digital Elevation Model, and W, based on steady-state hydrology for hurricane conditions. W and [alpha] varied in a soil-specific and site-specific manner, indicating that site-specific management strategies are required for slope stabilization in the study area. Knowledge of [alpha] * W in potentially unstable zones allows for informed stability management practices, improving the utility of the hazard model for communities that contend with landslide risk.
Citation Details
Title: Applying a GIS slope-stability model to site-specific landslide prevention in Honduras. (Research).(geographic information system)
Author: B.F. Zaitchik
Publication:Journal of Soil and Water Conservation (Refereed)
Date: January 1, 2003
Publisher: Soil & Water Conservation Society
Volume: 58 Issue: 1 Page: 45(9)
Distributed by Thomson Gale
