A REVIEW ON EMPIRICAL AND PHYSICALLY BASED MODELLING OF RAINFALL TRIGGERED LANDSLIDES

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TABLEBI A.; NAFARZADEGAN A.R.; MALEKINEZBAD H.

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Journal Paper

Paper Information

Journal: Physical Geography Research Year:2010 | Volume:- | Issue:70 Page(s): 45-64

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Information Journal Paper

Title

A REVIEW ON EMPIRICAL AND PHYSICALLY BASED MODELLING OF RAINFALL TRIGGERED LANDSLIDES

Author(s)

TABLEBI A. | NAFARZADEGAN A.R. | MALEKINEZBAD H. | Issue Writer Certificate

Keywords

LANDSLIDEQ3

PHYSICALLY-BASED MODELINGQ3

SAFETY FACTORQ2

RAINFALL THRESHOLDQ2

Abstract

Introduction: Emergence of LANDSLIDE phenomena can be due to the different factors like geology, geomorphology, hydrology, biology and human activities but main role in LANDSLIDE initiation only is created by triggered factor. Intense rainfall, rapid snowmelt, water-level change, seismic loading and rapid erosion are the most important LANDSLIDE triggering mechanisms. Rainfall has been known as the most common factor in occurring LANDSLIDEs. In general, infiltration of rainfall in soil causes to increase soil water pressure, reduce matric suction and increase the weight of soil mass and finally, soil strength is decreases and LANDSLIDE occurs. Moreover, groundwater conditions responsible for slope failures are related to rainfall through infiltration, soil characteristics, antecedent moisture content, and rainfall history. Thus, the most important section of LANDSLIDE modeling (empirical, statistical or physically-based) is hydrological part. In this study, it has been tried to present the obtained results and the applied idioms in most cited researches about hydrological modeling of LANDSLIDEs. With respect to the human and financial damages due to occurring LANDSLIDEs in our country, designing and applying a LANDSLIDE warning system is necessary and doing study in this background is huge step for decreasing damages and sustainable managing of natural hazards. Authors hope to witness of creating the advance warning systems for LANDSLIDEs in our country by using obtained experiences around the world and motivations of internal researchers.

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