Land Subsidence Risk Asseessment in Karst Region, Case Study : Rongkop, Gunung Kidul, Yogyakarta-Indonesia
Land subsidence occurences due to sinkholes are common to be found in Rongkop, Gunung Kidul, lndonesia. They 3re located in karst morphology. Land subsidence is a well-known pbcnomenon in this karst landscape- Recently, however, ithas occurred in the middle ofa setrlemc.l. rcsulting in a hoie of s...
محفوظ في:
| المؤلفون الرئيسيون: | , , , |
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| التنسيق: | Book Section PeerReviewed |
| اللغة: | English |
| منشور في: |
RWTH Aachen University
2011
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| الموضوعات: | |
| الوصول للمادة أونلاين: | https://repository.ugm.ac.id/134971/1/Doni-prakasa-eka-putra-Land%20Subsidence%20Risk.pdf https://repository.ugm.ac.id/134971/ |
| الوسوم: |
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| الملخص: | Land subsidence occurences due to sinkholes are common to be found in Rongkop, Gunung Kidul, lndonesia.
They 3re located in karst morphology. Land subsidence is a well-known pbcnomenon in this karst landscape-
Recently, however, ithas occurred in the middle ofa setrlemc.l. rcsulting in a hoie of scveral melres in diamcle.
and depth and oausing damage on several houses- According !o findings lrom field observation, the iand
subsidence is due to the interactions of unfavourable moryhological conditions, weak engireering propefties of
Iithology, struclural gcology and heavy raiDfall.. Many traces of si*ho1es and land subsidence can bc Iound
close to the area of scltlemert, *hich may bear the dsk of considerable disasters to the habilants liying in thc
region. The a\aareness of this potential risk has given .he reason to condxct land subsidence risk assessment,
wirh the purpose to delineate the land subsiderce risk ir the Rongkop disrrict. In tlis study, the map oI land
subsidence risk was deveiopcd bascd on five paramclers: slope degree, lithology, rehtive relief, dislrnce to
lineaments of va11cy and land use. Applying rhe po itt coutrt sJstcm ntodel, weights for the firsl four paramctors
were determined by using opinion based scores adopting a criterion of anatyiical Herarchy proccss (AHP) 10
reveal land subsidence susceplibilily- After thrt. a malrix cvaluation system wlt! applicd for ihe deierminarion of
$e risk. The results reveal that the zones ofhigh.st risk are located in lbe settlement area along the valleys rhat
show the coincidence wirh the siokholes locations. |
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