Path: TopS1-Final ProjectMining Engineering-FTTM2017

STUDI ALTERASI DENGAN CITRA SATELIT LANDSAT 8 OLI/TIRS PADA DAERAH VEGETASI LEBAT DI LAPANGAN PANAS BUMI WAYANG WINDU, JAWA BARAT

ALTERATION STUDY USING LANDSAT 8 OLI/TIRS IMAGE OF DENSELY VEGETATED AREAS OF THE WAYANG WINDU GEOTHERMAL FIELD, PANGALENGAN, WEST JAVA

Undergraduate Theses from JBPTITBPP / 2017-09-27 14:11:53
Oleh : KRISTIAN EDWIN SALAMBA (NIM : 12113006), S1 - Department of Mining Engineering
Dibuat : 2017-09-27, dengan 1 file

Keyword : panas bumi, Wayang Windu, alterasi, hidrotermal, penginderaan jauh

Penginderaan jauh adalah salah satu metode eksplorasi pendahuluan panas bumi melalui penampakan anomali alterasi permukaan dari citra multispektral. Tujuan dari studi alterasi di lapangan panas bumi Wayang Windu, Kabupaten Bandung, Provinsi Jawa Barat untuk mengetahui karakteristik zonasi alterasi pada permukaan dengan metode penginderaan jauh menggunakan citra multispektral dari Landsat 8 OLI/TIRS dibantu dengan observasi langsung di lapangan panas bumi Wayang Windu sebagai validasi. Daerah penelitian yaitu lapangan panas bumi Wayang Windu terletak pada ketinggian 1500–2600 mdpl, lokasi penelitian berada di Kabupaten Bandung di bagian selatan terletak di jalur pegunungan kuarter dengan formasi batuan tersusun dari batuan andesit basalan, tuf-breksi, batuapung serta terdapat sesar dan patahan yang berarah Barat laut-Tenggara dan Timur laut-Barat daya. Penelitian ini dilakukan dengan studi literatur, survei lapangan dan pengujian laboratorium terhadap contoh tanah menggunakan analisis reflektansi spektroskopi, X-Ray Diffraction untuk menentukan jenis mineral dan X-Ray Fluorescence untuk menentukan kelimpahan unsur yang ada di lapangan panas bumi Wayang Windu. Penginderaan jauh menggunakan citra satelit dari Landsat 8 OLI/TIRS dengan tanggal akuisisi 10 September 2013 pada scene 122/65, analisis terhadap citra Landsat 8 OLI/TIRS menggunakan metode Directed Principal Component. Berdasarkan survei lapangan dan pengolahan citra satelit, zona alterasi permukaan di Wayang Windu berkorelasi dengan sesar dan patahan. Kelompok alterasi yang teridentifikasi di lapangan panas bumi adalah kelompok argilik lanjut dengan mineral penciri: kristobalit dan haloisit, serta kelompok propilitik dengan mineral penciri epidot dan klorit.

Deskripsi Alternatif :

Remote sensing is the method usually used for conducting geothermal reconnaissance surveys by mapping the surface alteration anomalies, which can be captured by a satellite’s multispectral image sensor. This study aimed to analyze the characteristics of the surface alteration zones in the Wayang Windu geothermal field, Pangalengan, West Java, using remote sensing method from multispectral images from Landsat 8 OLI/TIRS and validated by groundtruth data from field surveys. The Wayang Windu geothermal field, with an elevation of 1500–2600 masl, is located in Pangalengan and lies in a quartery volcanic arc. The rock types include andesite, basalt, tuff, breccia, and pumice. The faults in the study area was directed to northwest-southeast and northeast-southwest. The research process included a literature review, field surveys, laboratory using spectral reflectance analysis to determine the reflectance from soil samples and the mineral composition in the field, X-Ray Diffraction to determine the mineral composition, and X-Ray Fluorescence to determine the abundance of elements. The imagery used in this study is the Landsat 8 OLI/TIRS with an acquisition date of September 10, 2013; the multispectral images were evaluated using Directed Principal Component analyses. The combination of field surveys and remote sensing enhanced the spatial data. The surface alteration zones in the Wayang Windu geothermal field are correlated with joints and faults. Based on their mineral composition, the surface alteration zones were identified as an advanced argillic zone with the occurrence of secondary minerals such as cristobalite and halloysite, and a propylitic zone with the occurrence of secondary minerals such as epidote and chlorite.

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  • Mohammad Nur Heriawan, ST., MT. PhD, Editor: Resti Andriani

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