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Journal : Civil Engineering Journal

Landslide Susceptibility Assessment Using Combined TRIGRS and Flow-R Rifa’i, Ahmad; Yuniawan, Ragil A.; Faris, Fikri; Trisnawati, Tiara R.; Purba, Byon Rezy Pradana; Subiyantoro, Andy; Suryana, Eka Priangga Hari; Ridwan, Banata Wahid
Civil Engineering Journal Vol 11, No 3 (2025): March
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-03-020

Abstract

Landslides were addressed as one of the natural hazards that can create extensive disasters. Effective assessment to locate potential landslide events is crucial for planning and risk mitigation. This study, which is located in the Sumitro watershed, Kulon Progo, Yogyakarta, presents a novel approach to landslide susceptibility assessment by integrating the Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability Model (TRIGRS) with the Flow-R model. Five key parameters, namely slope, soil properties, groundwater level, soil thickness, and rainfall, were used to create the landslide susceptibility zonation. TRIGRS was used to identify the landslide initiation, while Flow-R was used to create the run-out area. The result was then validated through statistical evaluation using Area Under Curve (AUC) based on the landslide inventory. Results show that landslide susceptibility zonation created from TRIGRS alone resulted in an AUC value of 0.679, while the combination of TRIGRS-Flow-R susceptibility zonation shows a better AUC value of 0.728. The increase of the AUC value of almost 0.05 has enhanced the correlation between the landslide susceptibility zonation and landslide inventory from “acceptable” to “excellent” correlation. This result demonstrates that integrating Flow-R with TRIGRS improves the performance of landslide susceptibility zonation. This study offers a new perspective on creating landslide susceptibility zonation by combining two methods, yielding more reliable results. Doi: 10.28991/CEJ-2025-011-03-020 Full Text: PDF
Co-Authors Abunawas, Abunawas Adhari Febriyan, Muhammad Afiful Maula, Ricky Ahmad Faqih Alma’as, Azis Alpionita, Indri Alviani, Devi Anis Humaidi, Anis Antika, Rindi Ardhani, Risma Arzaqi, Nila Astarina, Ivalaina Atiana, Sofyetin Baihaqi, Mohammad Choli, Ifham Dewi Fatmawati Dikananda, Arif Rinaldi Dikananda, Fatihanursari Dina, Syafrina Erika Revida Fatihanursari, Fatihanursari fatimah, lilis Fikri Faris, Fikri Fikri, Khusnul Habibi, Muhamad Lutfi Harori, M Iqbal Harun Al Rasyid, M. Udin Husain, Naufal Ike Kusdyah Rachmawati Ikram, Moh. Indra Gunawan, Agus Indriya Efendi, Dendy Iqbal Syaidin, Fadli Irawan, Dhyan Andika Ismanti, Sito Khoirul Anwar Laila Hayati, Laila Lukman Rohmat, Cep Martanto . Melda Yanti Mirna Mirna Muannif Ridwan Mubarok, Fatkhan Muchlis Muchlis Muhmammad Basysyar, Fadhil Muslimah, Maziyyatul Nahar, M. Fadhlun Najamuddin Najamuddin, Najamuddin Narasati, Riri Narasati Ni’am, Mohammad Shulkhi Ni’mah, Zetty Azizatun Nur alamsyah, Deri Nur Effendi, Nur Nur Rochmah, Aulia Pamungkas, Satriyo Pratama, Denni Purba, Byon Rezy Pradana Putri, Maharani Nur Aishya Aulia Putri, Niken Zeliana Rahmah, Mishbahu Ridwan, Banata Wahid Rinaldi Dikananda, Arif Rizky, Mhd. Dhiya Rochmah, Shinta Ainun Ruspitasari, Widi Dewi Setianingsih, Rahayu Siti Syamsiyatun Solihudin, Dodi Subiyantoro, Andy Suryana, Eka Priangga Hari SUSANTI, NOVRIANI Theresia Pradiani Trisnawati, Tiara R. Tuzzahra, Najwa Vaneysha, Vini Wardiyanto, K. Bagus Wijaya, Aruka Yuniawan, Ragil A. Zakariya, Ali Zhahiran Herlambang, Rilanisa