Relationship between rainfall and debris flow occurrence in the Crocker Range of Sabah, Malaysia

Edgar Jr. Joe, and Felix Tongkul, and Rodeano Roslee, (2018) Relationship between rainfall and debris flow occurrence in the Crocker Range of Sabah, Malaysia. Malaysian Journal of Geosciences (MJG), 2 (1). pp. 18-29. ISSN 2521-0920

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Abstract

Debris flow occurences are quite common in mountainous areas such as those in the Crocker Range of Sabah, Malaysia especially during prolonged heavy rainfall. Despite the recurrence of debris flows in the area, not much information is known about the effect of rainfall on their occurrences. Based on the rainfall intensity-duration of two selected case studies at Jalan Penampang-Tambunan KM38.80 and Jalan Tamparuli-Ranau KM83.90, the debris flow threshold for the Crocker Range cases are approximate to that proposed by Montgomery et al. (2000) given by the equation of I = 9.9D-0.52 which is generally low. This implies that low-intensity rainfall is sufficient to trigger debris flows due to high availability of loose material and weak geological condition.

Item Type: Article
Uncontrolled Keywords: Debris flow, rainfall, threshold, Crocker Range
Subjects: Q Science > Q Science (General)
Q Science > QE Geology
Divisions: FACULTY > Faculty of Science and Natural Resources
Depositing User: MDM SITI AZIZAH IDRIS
Date Deposited: 31 Jan 2020 00:56
Last Modified: 31 Jan 2020 00:56
URI: http://eprints.ums.edu.my/id/eprint/24789

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