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  <title>ANALISIS DEFORMASI AKIBAT GEMPA BUMI PULAU LOMBOK MENGGUNAKAN METODE DIFFERENTIAL INTERFEROMETRY SYNTHETIC APERTURE RADAR (DINSAR)</title>
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  <namePart>NABILA ULFA</namePart>
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   <placeTerm type="text">Banda Aceh</placeTerm>
   <publisher>Universitas Syiah Kuala</publisher>
   <dateIssued>2021</dateIssued>
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  <languageTerm type="text">Indonesia</languageTerm>
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 <note>ABSTRAK &#13;
Pulau Lombok dihantam tiga gempa bumi besar yang terjadi secara berturut-turut dari&#13;
bulan Juli sampai Agustus 2018. Gempa bumi tersebut terjadi pada tanggal 29 Juli (6.4&#13;
Mw), 05 Agustus (7.0 Mw), dan 19 Agustus (6.2 Mw). Ketiga gempa besar tersebut&#13;
diakibatkan oleh sesar naik Flores yang mengakibatkan terjadinya deformasi di Pulau&#13;
Lombok. Penelitian mengenai deformasi diperlukan untuk mengetahui wilayah-wilayah&#13;
yang mengalami perubahan permukaan dan berapa besar perubahan yang terjadi. Dari&#13;
hasil pengamatan akan diketahui zona aman dan zona terdampak sehingga dapat menjadi&#13;
salah satu upaya dalam mitigasi bencana. Deformasi dapat diidentifikasi menggunakan&#13;
teknologi penginderaan jauh tanpa perlu melakukan pengukuran langsung di lapangan.&#13;
Metode yang digunakan yaitu Differential Interferometry SAR (DInSAR). Penelitian ini&#13;
menggunakan 4 data citra SAR sebelum dan sesudah gempa bumi untuk mendeteksi&#13;
perbedaan fase dari citra tersebut. Perbedaan fase data citra menunjukkan perubahan titik&#13;
di permukaan bumi.  Pengolahan data dilakukan menggunakan software SNAP. Dari&#13;
penelitian ini didapatkan bahwa gempa bumi tanggal 29 Juli menyebabkan kenaikan&#13;
sebesar 0.13 meter di daerah pesisir pantai Lombok Utara dan penurunan 0.11 sebesar&#13;
meter di sekitar Gunung Rinjani. Gempa tanggal 05 Agustus menyebabkan kenaikan&#13;
sebesar 0.27 meter di daerah pesisir pantai Lombok Utara. Sedangkan gempa pada&#13;
tanggal 19 Agustus mengakibatkan terjadinya kenaikan sebesar 0.22 meter di pesisir&#13;
pantai Lombok Timur dan penurunan sebesar 0.082 meter. Hasil survey menunjukkan&#13;
bahwa metode DInSAR dapat digunakan untuk mengidentifikasi deformasi permukaan&#13;
di Pulau Lombok.&#13;
&#13;
Kata kunci : Deformasi, Pulau Lombok, DInSAR &#13;
&#13;
 &#13;
ABSTRACT &#13;
Lombok Island was hit by three big earthquakes in a row from July to August 2018. The&#13;
earthquake occurred on July 29 (6.4 Mw), August 05 (7.0 Mw), and August 19 (6.2 Mw).&#13;
The earthquake was triggered by Flores thrust fault which resulted in ground&#13;
deformation on Lombok Island. Research on deformation is needed to determine the&#13;
areas that experience surface changes and how much change has occurred. From the&#13;
observations, it will be known the safe zone and zone impact that can be used as disaster&#13;
mitigation. Deformation can be identified using remote sensing technology without&#13;
direct measurements in the field. The method used in this study is Differential&#13;
Interferometry SAR (DInSAR). This study used 4 SAR images before and after the&#13;
earthquakes to detect phase differences using these images. The phase difference in&#13;
image data shows the change on the earth's surface. Data processing was performed&#13;
using SNAP. Based on this research, it is known that the earthquake on July 29 caused&#13;
uplift with a value of 0.13 meters in the coastal area of North Lombok and subsidence&#13;
with a value of 0.11 meters around Mount Rinjani. The earthquake on August 05 caused&#13;
uplift with a value of 0.27 meters in the coastal area of North Lombok. Meanwhile, the&#13;
earthquake on August 19 resulted in uplift with a value of 0.22 meters on the coast of&#13;
East Lombok and subsidence with a value of 0.082 meters. The results show that the&#13;
DInSAR method can be used to identify deformations in Lombok Island. &#13;
Keywords: Deformation, Lombok Island, DInSAR&#13;
 &#13;
&#13;
&#13;
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</note>
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