Nelvina, Angie and Emma Yuliani, S.T., M.T., Ph.D. and Prof. Dr. Ir. M. Bisri, MS., IPU. (2024) Deliniasi Potensi Airtanah Berbasis Sistem Informasi Geografis Dan Analytical Hierarchy Process Di Sub Das Metro. Sarjana thesis, Universitas Brawijaya.
Abstract
Air bawah tanah adalah air yang terdapat di rongga-rongga lapisan geologi di bawah daerah jenuh dan merupakan sumber air penting untuk kehidupan, termasuk di Indonesia. Air ini digunakan untuk pasokan air minum, irigasi pertanian, dan kebutuhan industri. Namun, informasi tentang potensi air bawah tanah masih terbatas karena kurangnya sumur pantau dan data hidrogeologi regional, sehingga sulit untuk mengidentifikasi, memetakan, dan memanfaatkannya secara optimal dan berkelanjutan. Untuk memetakan potensi airtanah di Sub DAS Metro, perpaduan antara Sistem Informasi Geografis (SIG) dan metode Analytical Hierarchy Process (AHP) dapat digunakan. Metode ini melibatkan berbagai parameter seperti kerapatan aliran, tutupan lahan, topographic wetness index (TWI), kerapatan kelurusan, kemiringan lereng, curah hujan, tekstur tanah, dan litologi batuan. Setiap parameter diberikan bobot dan nilai peringkat yang dibagi ke dalam beberapa kelas sesuai dengan perhitungan metode AHP. Sehingga nilai bobot setiap parameter dijumlahkan dan didapatkan nilai Groundwater Potential Index (GWPI). Dari hasil Analisa dengan cara overlay, zona potensi airtanah di Sub DAS Metro terbagi dalam lima kategori, yaitu potensi airtanah sangat rendah (19,70% dari total area, 50,128 km²), potensi airtanah rendah (22,02% dari total area, 56,045 km²), potensi airtanah sedang (21,94% dari total area, 55,851 km²), potensi airtanah tinggi (17,58% dari total area, 44,755 km²), potensi airtanah sangat tinggi (18,75% dari total area, 47,732 km²).
English Abstract
Groundwater is water found in the cavities of geological layers below the saturated zone and is an important water source for life, including in Indonesia. This water is used for drinking water supply, agricultural irrigation, and industrial needs. However, information about groundwater potential is still limited due to the lack of monitoring wells and regional hydrogeological data, making it difficult to identify, map, and utilize it optimally and sustainably. To map the groundwater potential in the Sub Metro Watershed, a combination of Geographic Information System (GIS) and Analytical Hierarchy Process (AHP) methods can be used. This method involves various parameters such as drainage density, land cover, topographic wetness index (TWI), lineament density, slope, rainfall, soil texture, and lithology. Each parameter is assigned a weight and ranking value, which are divided into several classes according to the AHP method calculations. Thus, the weight values of each parameter are summed, and the Groundwater Potential Index (GWPI) is obtained. Based on the analysis using the overlay method, the groundwater potential zones in the Sub Metro Watershed are divided into five categories: very low potential (19.70% of the total area, 50.128 km²), low potential (22.02% of the total area, 56.045 km²), medium potential (21.94% of the total area, 55.851 km²), high potential (17.58% of the total area, 44.755 km²), and very high potential (18.75% of the total area, 47.732 km²).
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0524071435 |
| Uncontrolled Keywords: | Air Tanah, Sistem Informasi Geografis (SIG), Analytical Hierarchy Process (AHP), Potensi Airtanah, Sub DAS Metro. |
| Divisions: | Fakultas Teknik > Teknik Pengairan |
| Depositing User: | S Sucipto |
| Date Deposited: | 23 Sep 2024 01:27 |
| Last Modified: | 23 Sep 2024 01:27 |
| URI: | http://repository.ub.ac.id/id/eprint/230854 |
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