Publication: Land subsidence prediction in central plain of Thailand
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Issued Date
2013-02
Resource Type
Language
eng
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Mahidol University
Bibliographic Citation
International Journal of Environmental Science and Development. Vol. 4. No.1 (2013), 59-61.
Suggested Citation
Piyakarn Teartisup, Prapeut Kerdsueb, ปิยะกาญจน์ เที้ยธิทรัพย์, ประพฤติ เกิดสืบ Land subsidence prediction in central plain of Thailand. International Journal of Environmental Science and Development. Vol. 4. No.1 (2013), 59-61.. doi:10.7763/IJESD.2013.V4.304 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/48468
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Title
Land subsidence prediction in central plain of Thailand
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Abstract
The aim of this research was to analyze risk areas
of land subsidence. Risk factors were selected from related
research on the problem of land subsidence. There were six
factors selected: geological, hydrogeological, number of wells,
groundwater used, land use and amount of population. The
factors were analyzed by weighting and rating scores from
twelve governmental officers from concerned agencies. The
total score of each factor was employed to assess risk area of
land subsidence by GIS and PCA method. The output in this
study is a map of risk area of land subsidence in Nakhon
Pathom Province, representative central plain area. In this
study, the risk area of land subsidence was classified into 3
levels. Most of the land consisted of areas at a moderate risk of
subsidence and these areas were scattered throughout the study
area, covering 1,905.93 km2, while a high level to at risk areas
was found in parts of the west and south of the study area,
covering 251.02 km2. The low level of land subsidence risk
covered the least area, at only 14 km2, mainly in the
northwestern and eastern parts of the study area. Furthermore,
the results showed land subsidence is most heavily influenced by
excessive utilization of groundwater. The second most
influential factor is the number of wells. A comparison of bench
marks from the Royal Thai Survey Department, ground checks
of the real situation and the assessments made in this study
showed all.