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Journal : Jurnal Penginderaan Jauh dan Pengolahan Data Citra Digital

Analisis Model Estimasi Tinggi Muka Air Tanah Menggunakan Indek Kekeringan Febrianti, Nur; Murtilaksono, Kukuh; Barus, Baba
Jurnal Penginderaan Jauh dan Pengolahan Data Citra Digital Vol. 15 No. 1 Juni 2018
Publisher : Indonesian National Institute of Aeronautics and Space (LAPAN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (942.043 KB) | DOI: 10.30536/j.pjpdcd.2018.v15.a2867

Abstract

The Ground Water Level plays an important role in determining the greenhouse gas emission and, in turn, in regulating global climate system. Information on existing water levels is still using field measurements. The purpose of this study was to evaluate the best approximation model for estimating water level using drought index. This study utilizes Landsat 8 data to calculate Normalized Difference Water Index and Visible and Shortwave infrared Drought Index for 3 months (March, April and June 2016). The best estimation model is selected by the Akaike Information Criteria correction method and validated using K-Fold cross-validation. The results of this study indicate that the estimation of water level is affected by both drought indices with the TMA (mm) equation= -439,47 – 1639,7 * NDWI_Maret – 640,23 * NDWI_April + 477 * VSDI_Maret. Estimated water level began to detect hotspots ranging from 64,35 ± 36,9 6 cm (27 - 101 cm). The critical point for KHG Sei Jangkang - Sei Liong is 27 cm, thus the water level depth should be maintained less than that to avoid fire in peatlands.ABSTRAKTinggi muka air tanah lahan gambut atau secara teknis dikenal dengan kedalaman muka air tanah memegang peran penting dalam menentukan emisi gas rumah kaca dan mengatur sistem iklim global. Informasi tentang tinggi muka air yang ada saat ini masih menggunakan hasil pengukuran lapangan. Tujuan penelitian ini adalah mengevaluasi model aproksimasi terbaik untuk estimasi tinggi muka air dengan menggunakan indeks kekeringan. Penelitian ini memanfaatkan data Landsat 8 untuk menghitung Normalized Difference Water Index dan Visible and Shortwave infrared Drought Index selama 3 bulan (Maret, April dan Juni 2016). Model estimasi terbaik dipilih dengan metode koreksi Kriteria Informasi Akaike dan divalidasi menggunakan validasi silang K-Fold. Hasil penelitian ini menunjukkan bahwa estimasi tinggi muka air dipengaruhi oleh kedua indeks kekeringan tersebut dengan persamaan TMA (mm) = - 439,47 – 1639,7 * NDWI_Maret – 640,23 * NDWI_April + 477 * VSDI_Maret. Estimasi tinggi muka air mulai terdeteksi adanya hotspot berkisar antara 64,35±36,9 6 cm (27 – 101 cm). Titik kritis untuk KHG Sei Jangkang – Sei Liong adalah 27 cm, dengan demikian kedalaman tinggi muka air harus dipertahankan kurang dari itu untuk menghindari terjadinya kebakaran di lahan gambut.
Pengaruh Tinggi Muka Air Gambut Sebagai Indikator Peringatan Dini Bahaya Kebakaran di Sungai Jangkang - Sungai Liong Febrianti, Nur; Murtilaksono, Kukuh; Barus, Baba
Jurnal Penginderaan Jauh dan Pengolahan Data Citra Digital Vol. 16 No. 1 Juni 2019
Publisher : Indonesian National Institute of Aeronautics and Space (LAPAN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (562.672 KB) | DOI: 10.30536/j.pjpdcd.2019.v16.a3059

Abstract

Disasters of forest and land fires are increasingly concerned. The nature of peat soil which is easy to lose water and high organic matter content causes peat soils to be very sensitive to fire. Therefore it is necessary to know indicators for early warning of fires on peatlands. The purpose of this study is to determine the critical groundwater level (GWL) as an indicator of peatland fires on the Jangkang River - Sungai Liong. Determination of the critical point of peatland fires as a fire early warning is done by calculating the difference from the value of the undefined TMA with a range of possible errors. The TMA value is obtained from the estimation of several methods, namely data on the physical properties of the soil, the drought index, and a combination of both. The TMA estimation of the physical properties of the soil has a range of fires at depths of 74.3 - 107 cm. In estimating TMA using a drought index, potential fires occur in TMA ranging from 27 - 101 cm. While the combined estimates of the physical properties of the soil and the drought index ranged from 66.8 - 98.8 cm the occurrence of fires on peatland. The results of this study show that the estimated TMA from a combination of field data and drought index provides fairly good accuracy. Thus TMA can be an early warning indicator of the danger of peatland fires. This TMA estimation can give faster results and pretty good accuracy. But this estimation model for TMA does not necessarily apply directly to other research locations. The critical point of peat soil water depth ranges from 27 to 74 cm. The depth of the peatland surface should be maintained less than the critical point, if not then the potential for peatland fires will increase.
Co-Authors A Akbar Akhmad Fauzi Amir, Rini Ariani Andria, Andri Yushar Arya Hadi Dharmawan Atang Sutandi Bakri, Subhan Bambang H. Trisasongko Bambang Juanda Bambang Pramudya Bayusukmara, Yuda Pringgo Boedi Tjahjono, Boedi Danang Pramudita, Danang Darojati, Nina Widiana Deddy S. Bratakusumah Dessy Arianti, Dessy Diar Shiddiq, Diar Didit Okta Pribadi DP Tejo Baskoro, DP Tejo Drajat Martianto Dwi Maryanto, Dwi Dwi Putro Tejo Baskoro Dwi Ratnawati Christina, Dwi Ratnawati Dyah R. Panuju Dyah Retno Panuju Edi, Harisman Edy Djauhari Purwakusumah Endriatmo Soetarto Ernan Rustiadi Euis Sunarti Fahimuddin, Muhammad Mu?min Faris Rahmadian Febrianti, Nur Febrianti, Nur Firdian, Ardhy Fredian Tonny Nasdian, Fredian Tonny Gersony Miri, Gersony Hana Indriana Hans Moravia Hari Wijayanto Hendra Setiawan Hidayah, Nursantri Hilda Nurul Hidayati, Hilda Nurul Imas Sukaesih Sitanggang Indaryanti, Yoyoh Irzaman Irzaman Iskandar Iskandar Kukuh Murtilaksono Kusumastuti, Ayu Candra Lala M. Kolopaking Lala Mulyowibowo Kolopaking Laode Syamsul Iman, Laode Syamsul LATIFAH KOSIM DARUSMAN Mahmud A. Raimadoya Mardianingsih, Dyah Ita Mohamad Rafi Muhamad Firdaus Muhammad Munawir Syarif, Muhammad Munawir Muhammad Zulfikar Munawir, M Noer Azam Achsani Nurmala, Corry Rahmi Fajarini, Rahmi Rilus A Kinseng Rizaldi Boer Romiyanto, Romiyanto Roslinawati, Ade Mirza Ruman, Rifyan Sabri Effendy, Sabri Setia Hadi Siti Maesaroh Siti Nurisyah Soekmana Soma Sri Mulatsih Suryadi Suryadi Suwardi Suwardi Taopik Ridwan Tb Iwan Mulyawan, Tb Iwan Tejo, Reni Kusumo Tenda, Edwin Tommi Tommi, Tommi Tono, Tono Tuni, Muhd. Siraz Umar Mansyur Umar, Iswandi Untung Sudadi, Untung Wardani, Nindya Ayu Werenfridus Taena Widiatmaka . Widiatmaka Widiatmaka Wihadanto, Ake Zluyan Firdaus Afif, Zluyan Firdaus