Analisis Penurunan Permukaan Lahan Gambut di Kabupaten Pelalawan, Provinsi Riau Menggunakan Data SAR

Susanti, Ruli Dwi (2018) Analisis Penurunan Permukaan Lahan Gambut di Kabupaten Pelalawan, Provinsi Riau Menggunakan Data SAR. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

[img]
Preview
Text
03311440000018_Ruli.pdf - Accepted Version

Download (4MB) | Preview

Abstract

Indonesia merupakan salah satu negara yang memiliki potensi lahan gambut terluas di Asia Tenggara.. Pemanfaatan lahan gambut sebagai lahan perkebunan menimbulkan dampak lingkungan akibat aktivitas pembukaan lahan dengan metode drainase. Dampak buruk yang timbul salah satunya yakni penurunan permukaan lahan gambut. Penelitian ini bertujuan untuk mengetahui besar penurunan permukaan lahan gambut di Kabupaten Pelalawan, Riau menggunakan SAR dengan metode DInSAR. Adapun data utama yang digunakan dalam penelitian ini adalah citra satelit Sentinel 1-A, data orbit dan DEM SRTM 30 m. Adapun untuk mengetahui persebaran lahan gambut, digunakan Peta Indikatif Prioritas Restorasi oleh Badan Restorasi Gambut tahun 2015 sebagai data penunjang. Penelitian ini menggunakan metode two pass DInSAR sehingga menghasilkan dua data perubahan permukaan lahan. Pasangan citra bulan Juni 2015-Juli 2016 menunjukkan penurunan lahan gambut tertinggi sebesar 109,113 mm dan kenaikan permukaan lahan tertinggi sebesar 108,089 mm. Sedangkan pasangan citra kedua yakni bulan Juni 2016-Juli 2017 menunjukkan penurunan permukaan lahan gambut tertinggi sebesar 251,842 mm dan kenaikan permukaan lahan tertinggi sebesar 73,715 mm. ========================================================================================================= Indonesia is known as a country that has the largest peatland in Southeast Asia. Peatland is commonly used for agricultural, plantation and settlement purpose. The procedure for land clearing using drainage system leads to some problem such as Subsidence. Moreover, drainage in peatland can cause drought because of peatland characteristic that is not easily absorbing water after drying. This situation is very important to be monitored because the highest risk of forest fire is waiting. The aim of this research is to observe the land subsidence phenomenon on the peatland area in Pelalawan, Riau. This research uses the DInSAR method which needs SAR data such as sentinel 1-A, orbit, and DEM SRTM 30m. Using time interval 1 year between June 2015 until July 2017, DInSAR is used to detect deformation pattern in the imagery from Line of Sight (LOS). Map from Badan Restorasi Gambut is used as validation data to see the area which is recovered by peatland. There are 2 pairs of SAR imagery that is processed using the two-pass method to produce two imageries that reveal LOS displacement in every period. The first DInSAR (June 2015-June 2016) reveals that the highest subsidence is about 109,113 mm and the highest uplift is about 108,089 mm. Meanwhile, by the period, DInSAR in June 2016-July 2017 can be concluded that the highest peat subsidence is about 251,842 mm and the highest uplift is about 73,715 mm.

Item Type: Thesis (Undergraduate)
Additional Information: RSG 577.687 Sus a-1 3100018076602
Uncontrolled Keywords: Gambut, Penurunan Permukaan, Sentinel 1-A, DInSAR
Subjects: G Geography. Anthropology. Recreation > G Geography (General) > G70.5.I4 Remote sensing
Divisions: Faculty of Civil, Environmental, and Geo Engineering > Geomatics Engineering > 29202-(S1) Undergraduate Theses
Depositing User: Ruli Dwi Susanti
Date Deposited: 10 Dec 2020 07:24
Last Modified: 10 Dec 2020 07:24
URI: https://repository.its.ac.id/id/eprint/55894

Actions (login required)

View Item View Item