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| Titel: |
LANDSLIDE HAZARD ZONATION USING THE RELATIVE EFFECT METHOD IN SOUTH EASTERN PART OF NILGIRIS, TAMILNADU, INDIA |
| Auteur: |
Naveen Raj. T, Ram Mohan.V, Backiaraj. S, Muthusamy.S |
| Verschenen in: |
International journal of engineering science and technology |
| Paginering: | Jaargang 3 (2011) nr. 4 pagina's 3260-3266 |
| Jaar: |
2011 |
| Inhoud: |
Landslides occur frequently due to climatologic and geologic conditions with high tectonic activities. In this paper, the landslide hazard and the effect of landslide-related factors at South Eastern part of Nilgiri District, Tamilnadu using the Relative Effect Method (REM) model, Geographic Information System (GIS) and remote sensing data have been evaluated. There are different methods of landslide hazard zonation with some advantages and disadvantages. The authors suggest the Relative Effect Method (REM), which is statistical method using GIS software for landslide hazard zonation. This method determines the relative effect (RE) of each unit, such as surface geology, slope morphometry, climatic conditions, land use and land cover by calculating the ratio of the unit portion in coverage and landslide. The function that is used in this method is logarithmic. The advantages of the logarithmic function are in domain determination for output data and equality for plus and minus domains of calculated RE's. All the thematic layers are Display manipulate and analysis has been carried out to evaluate layers such as geology, geomorphology, slope, soil, land use and drainages. The computed index for each grid for each factor was summed and grouped into five classes. The landslide susceptibility map can be used to reduce damage associated with landslides and to land cover planning. |
| Uitgever: |
Engg Journals Publication (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 76 van 122 gevonden artikelen
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