Time series assessment on landslide occurrences in an area undergoing development

Rodeano Roslee, and Norbert Simon, and Michael Crozier, and Mairead de Roiste, and Abdul Ghani Rafek, (2015) Time series assessment on landslide occurrences in an area undergoing development. Singapore Journal of Tropical Geography, 36 (1). pp. 98-111. ISSN 1467-9493

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Official URL: http://dx.doi.org/10.1111/sjtg.12096

Abstract

This study assesses the influence of development on landslide occurrences in a rapidly developing area, Kota Kinabalu in Sabah Malaysia, across three assessment years (1978, 1994 and 2010). Two development indicators, land use and road density, were used to measure the influence of development on landslide occurrence. Land use was classified into four categories (barren, forest, developedand other), and road density was classified into low (< 50 m/40 000 m2), moderate (50–150 m/40 000 m2) and high (> 150 m/40 000 m2). Landslide density analysis was used to calculate the concentration of landslide for the different land use and road density categories. The number of landslides in developed areas increased from 19 landslides/100 km2 in 1978, to 29 landslides/100 km2 in 1994 and to 50 landslides/100 km2 in 2010, mirroring an increase in land use for development purposes from 8 per cent in 1978 to 27 per cent in 2010. Landslide density also gradually increased in the high road density class from 10 landslides/100 km2 in 1978, to 30 landslides/100 km2in 1994 and 62 landslides/100 km2 in 2010. These results show that road construction activities influence landslide occurrences.

Item Type:Article
Uncontrolled Keywords:development, landslide, rainfall, land use density, landslide density, road density
Subjects:Q Science > QE Geology
Divisions:SCHOOL > School of Science and Technology
ID Code:12866
Deposited By:IR Admin
Deposited On:24 Feb 2016 11:05
Last Modified:24 Feb 2016 11:05

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