Assesment on rainfall behaviour at sinkhole tragedic area in Ipoh North and Perlis / Nor Zahrawaani Mohd Nasir

Sinkhole is a costly recurring problem faced by many countries such Malaysia where some of the areas having limestone with underground cavities as the bedrock„ Economic loss or damages of properties and loss of lives occur in major sinkhole failure.
Erosivity of rainfall and type of soil are the main parameters that might influence and contribute to the sinkhole occurrences. In this research, the erosivity of rainfall is the only parameter taken into consideration and thoroughly analysed in predicting the contributing factor of sinkhole occurrences,
Erosivity factor itself is strongly influence by the climatic condition and it is totally related to the rainfall characteristic and its kinetic energy. Then the relationship between rainfall pattern can be related to ROSE Index to predict the occurrence to the sinkhole.
In this study it was found that sinkholes occurred when the ROSE Index is in the category of high, very high and critical,