ANALISIS MORFOTEKTONIK DAN MORFOMETRI UNTUK MENILAI TINGKAT KEAKTIFAN TEKTONIK BERDASARKAN INDEX OF TECTONIC ACTIVITY (IAT) DI SUB DAS CIPELES KABUPATEN SUMEDANG

Rafi Fathurrahman, - and Hendro Murtianto, - and Nanin Trianawati Sugito, - (2025) ANALISIS MORFOTEKTONIK DAN MORFOMETRI UNTUK MENILAI TINGKAT KEAKTIFAN TEKTONIK BERDASARKAN INDEX OF TECTONIC ACTIVITY (IAT) DI SUB DAS CIPELES KABUPATEN SUMEDANG. S1 thesis, Universitas Pendidikan Indonesia.

Abstract

Kabupaten Sumedang, Jawa Barat, merupakan wilayah yang dilintasi oleh dua sesar aktif (Sesar Cileunyi-Tanjungsari dan Sesar Cipeles), kedua sesar tersebut diduga menjadi penyebab terjadinya gempa bumi berkekuatan M=4,8 pada tanggal 31 Desember 2023. Gempa ini mengakibatkan kerusakan yang cukup signifikan di lima kecamatan di Kabupaten Sumedang diantaranya, Kecamatan Cimalaka, Kecamatan Sumedang Utara, Kecamatan Sumedang Selatan, Kecamatan Ganeas dan Kecamatan Situraja, tercatat sekitar 238 unit rumah rusak dan 331 korban luka-luka akibat gempa tersebut. BMKG (2025) menyatakan adanya indikasi sesar aktif yang belum terpetakan, yang diduga menjadi penyebab terjadinya gempa, sehingga diperlukan studi untuk memahami tingkat keaktifan tektonik di wilayah tersebut. Maka dari itu penelitian ini bertujuan untuk menganalisis tingkat keaktifan tektonik di sub-DAS Cipeles, Kabupaten Sumedang. Sub-DAS Cipeles dipilih sebagai area studi dikarenakan melintasi 5 (lima) kecamatan yang terdampak gempa. Hasil penelitian ini menunjukkan bahwa dari luas total 450 km² Sub DAS Cipeles, seluas 41,16 km² (9,15 %) memiliki aktivitas tektonik tinggi, 76,53 km² (17,01 %) sedang, dan 207,50 km² (46,11 %) rendah, sehingga klasifikasi menutupi 72,27 % wilayah studi. Sisanya seluas 124,79 km² (27,73 %) tidak termasuk dalam klasifikasi karena berada di luar cakupan sub sub DAS yang menjadi fokus analisis.Temuan ini memiliki implikasi penting dalam konteks mitigasi bencana, khususnya mitigasi bencana secara pasif, karena dapat dijadikan dasar untuk pemetaan daerah rawan gempa dan pengkajian karakteristik bencana akibat aktivitas tektonik yang berlandaskan pada Perka BNPB No. 4 Tahun 2008 dan Perpres No. 93 Tahun 2019 yang menekankan pentingnya penelitian dan pengembangan tematik dalam rangka pemahaman risiko bencana secara spasial dan ilmiah, sebagai langkah awal mitigasi struktural dan non-struktural di daerah rawan bencana. Sumedang Regency, West Java, is an area traversed by two of the active faults (Cileunyi–Tanjungsari Fault and Cipeles Fault), which are suspected to be the cause of the M=4.8 earthquake that occurred on December 31, 2023. This earthquake caused significant damage in five districts of Sumedang Regency, namely Cimalaka, North Sumedang, South Sumedang, Ganeas, and Situraja Districts. Approximately 238 houses were damaged, and 331 people were injured as a result of the earthquake. According to BMKG (2025), there are indications of unmapped active faults that are believed to have triggered the earthquake, highlighting the need for a study to understand the level of tectonic activity in the region. Therefore, this study aims to analyze the level of tectonic activity in the Cipeles sub-watershed, Sumedang Regency. The Cipeles sub-watershed was chosen as the study area because it crosses the five districts affected by the earthquake. The results of this study indicate that, out of the total 450 km² area of the Cipeles sub-watershed, 41.16 km² (9.15%) is categorized as having high tectonic activity, 76.53 km² (17.01%) as moderate, and 207.50 km² (46.11%) as low. These classifications cover 72.27% of the study area. The remaining 124.79 km² (27.73%) was not included in the classification as it lies outside the focus area of the sub-sub watershed analysis. These findings have important implications for disaster mitigation, particularly passive disaster mitigation, as they can serve as a basis for mapping earthquake-prone areas and assessing disaster characteristics resulting from tectonic activity. This is in line with BNPB Regulation No. 4 of 2008 and Presidential Regulation No. 93 of 2019, which emphasize the importance of thematic research and development in understanding disaster risk from both spatial and scientific perspectives, as an initial step in structural and non-structural mitigation in disaster-prone areas.

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Item Type:	Thesis (S1)
Additional Information:	https://scholar.google.com/citations?view_op=new_profile&hl=en ID SINTA Dosen Pembimbing: Hendro Murtianto: 6115607 Nanin Trianawati Sugito: 6115094
Uncontrolled Keywords:	Morfotektonik, Morfometri, Sub-DAS Cipeles, Gempa Bumi, Kabupaten Sumedang. Morphotectonic, Morphometric, Cipeles Sub-Watershed, Earthquake, Sumedang Regency.
Subjects:	G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography G Geography. Anthropology. Recreation > GB Physical geography G Geography. Anthropology. Recreation > GE Environmental Sciences L Education > L Education (General)
Divisions:	Fakultas Pendidikan Ilmu Pengetahuan Sosial > Program Studi Survey Pemetaan dan Informasi Geografi D-4
Depositing User:	Rafi Fathurrahman
Date Deposited:	27 Oct 2025 05:04
Last Modified:	27 Oct 2025 05:04
URI:	http://repository.upi.edu/id/eprint/144404

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