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Journal : International Journal of Advances in Applied Sciences

A study of rainfall thresholds for landslides in Badung Regency using satellite-derived rainfall grid datasets Putu Aryastana; Listya Dewi; Putu Ika Wahyuni
International Journal of Advances in Applied Sciences Vol 13, No 2: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v13.i2.pp197-208

Abstract

Integrating field rainfall data with satellite data improves data accuracy and overcomes rainfall data limitations for rain thresholds. Integration can involve field rainfall data, satellite rainfall data, or a different satellite dataset. Merging these rainfall data sources provides more spatial coverage of satellite data. To determine how well rainfall thresholds predict rainfall-triggered landslides, the threshold model must be validated. This study will evaluate satellite rainfall data before and after integration in developing a rainfall threshold model for landslide prediction in Badung Regency. To do so, the study used a cumulative rainfall threshold over 3, 7, 15, and 30 days and two rainfall satellite products (integrated merged multi-satellite retrievals (IMERG) and precipitation estimation from remotely sensed information using artificial neural networks (PERSIANN)). Median, first, and third quartiles were used to set thresholds. The area under the curve (AUC) was calculated to validate rainfall threshold outcomes using receiver operating characteristic (ROC) curves. Analysis showed that integrating satellite rainfall data into the rainfall threshold model for landslide prediction yields better results than other methods. An AUC value of 0.903 (90.3%) for the 30-day cumulative rainfall thresholds supports this claim. This model could be a good input for a landslide early warning system in Badung Regency.
Co-Authors A. A. Ngr. Billy Narendra Anak Agung Gede Sumanjaya Anak Agung Sagung Putri Gita Suari Samitra Ardantha, I Made Ardhanaresvari, Tiara Rekha Asmani K., Anak Agung Rai Aureo Da Costa Belo Bhaskara, Made Adi Budha, I Ketut Candrayana, Kadek Windy Cok Agung Yujana Cok Agung Yujana Darma, I Gede Wira Dewa Ayu Nyoman Sriastuti, Dewa Ayu Nyoman Dewi, Listya Dharma, I Made Sotya Wira Diva, I Wayan Ditya Maha Gede Rustiawan Gede Sumarda Gede Suranata, Putu I Dewa Ayu Dwi Darmayanti I Dewa Ayu Mega Swari I Gede Yogi Adnyana Puspita Riana I Gusti Agung Putu Eryani I Gusti Ngurah Agung Widya I Ketut Budha I Komang Angga Darmayasa I Made Ardantha I Made Ardantha I Made Dwipa Jaya I Made Eryana Eka Putra I Made Kariyana I Made Okdivian Soekaratha I Made Surya Kumara I Made Wika Darmawan I Nengah Sinarta I Nyoman Sai Santya I Putu Suta Suyasa I Wayan Muliawan I Wayan Runa I Wayan Wartana Ida Ayu, Trisuci Arnawati Ida Bagus Gede Indramanik Ida Bagus Made Yatana Ilona Dwiyeni Nahak Jason Pajimola Punay Kadek Surya Dwangga Kadek Windy Candrayana Krisna Dwipa Yana Krisna Himawan Subiyanto Kurniawan, I Putu Manik Listya Dewi M. Sudiana Mahendra Maria Imaculata Goran Mosa Marselus Putra Mawo Kasa Sairo Morim, Gruberth Dirk Ni Kadek Ari Gita Cahyani Ni Ketut, Natalia Wulansari Ni Komang Ayu Agustini Ni Komang Ayu Agustini Ni Komang Ayu Agustini Ni Komang Sintyawati Ni Luh Putu, Laksmini Ni Made Ola Ulandari Ni Made Widya Pratiwi Ni Made Widya Pratiwi Ni Putu Widya Yuniari Ni Wayan Wahyuni Nugraha, Cokorda Gede Eka Putu Ika Wahyuni PUTU IKA WAHYUNI Rahadiani, Anak Agung Sagung Dewi Raharja, I Kadek Agus Wahyu Rahmayanti, Ni Made Prisca Sinda, Longginus Subiyanto, Krisna Himawan Sumanjaya, Anak Agung Gede Suranata, I Putu Gede Tasuku Tanaka Tri Hayatining Pamungkas Wayan Gde Erick Triswandana Wayan Wahyu Adnyana Tamara Wayan Widiana Wikan Pradnya Dana, Gde Windy Candrayana, Kadek Wui, Jackson Chang Hian Yanti Dewi, Ni Komang Yasa Bagiarta, I Ketut Yujana, Cokorda Agung