Judul: Pemetaan Tingkat Kerentanan Bencana Tsunami Menggunakan Sistem Informasi Geografis di Wilayah Pesisir Selatan Kabupaten Garut, Jawa Barat
Abstrak: Wilayah pesisir selatan Kabupaten Garut merupakan salah satu wilayah yang memiliki probabilitas terjadinya gempa bumi dan tsunami yang tinggi karena wilayahnya berhadapan langsung dengan pertemuan lempeng Indo-Australia, Megathrust Selat Sunda, dan Jawa bagian selatan. Penelitian ini bertujuan untuk mengidentifikasi dan memetakan tingkat kerentanan tsunami di wilayah pesisir selatan Kabupaten Garut, Jawa Barat. Peta kerentanan tsunami dibuat menggunakan metode tumpang susun (Overlay) dengan lima parameter, yaitu elevasi daratan, kemiringan lereng, jarak dari garis pantai, jarak dari sungai, dan penggunaan lahan. Penelitian yang mencakup wilayah 7 kecamatan ini terbagi dalam dua tahap yaitu tahap pengolahan data dan tahap survei lapang yang dilakukan pada tanggal 10 – 13 Januari 2022. Klasifikasi tingkat kerentanan tsunami dibagi menjadi lima kelas yaitu sangat rendah dengan luas wilayah sebesar 45.675,62 ha (14,89%), rendah dengan luas wilayah sebesar 206.241,16 ha (67,23%), menengah dengan luas wilayah sebesar 46.546,85 ha (15,17%), tinggi dengan memiliki luas wilayah sebesar 6.790,14 ha (2,21%), dan sangat tinggi dengan luas wilayah sebesar 1.497,17 ha (0,49%)., The southern coastal area of Garut Regency is one of the areas that has a high probability of an earthquake and tsunami because the area is directly opposite the meeting of the Indo-Australian plate, the Megathrust of the Sunda Strait, and the southern part of Java. This study aims to identify and map the level of tsunami vulnerability in the southern coastal area of Garut Regency, West Java. The tsunami vulnerability map was made using the Overlay method with five parameters, namely land elevation, slope, distance from the shoreline, distance from rivers, and land use. The research which covers 7 sub-districts is divided into two stages, namely the data processing stage and the field survey stage which was carried out on 10 – 13 January 2022. The classification of the tsunami vulnerability level is divided into five classes, namely very low with an area of 45,675.62 ha (14 .89%), low with an area of 206,241.16 ha (67.23%), medium with an area of 46,546.85 ha (15.17%), high with an area of 6,790.14 ha (2, 21%), and very high with an area of 1,497.17 ha (0.49%).
Keyword: coastal vulnerability, Garut Regency, GIS, tsunami

Judul: Mapping the Level of Coastal Vulnerability to Tsunami Disaster on the South Coast of Cilacap Regency, Central Java
Abstrak: Wilayah pantai selatan Kabupaten Cilacap termasuk salah satu wilayah yang mempunyai probabilitas yang tinggi dipengaruhi bencana gempa bumi dan tsunami. Hal ini disebabkan posisi wilayah Kabupaten Cilacap yang sangat dekat dengan pertemuan Lempeng Indo-Australia dan Lempeng Eurasia. Penelitian ini bertujuan untuk mengidentifikasi, memetakan dan menganalisis penyebaran tingkat kerentanan tsunami di wilayah pantai selatan Kabupaten Cilacap, Jawa Tengah. Peta kerentanan tsunami dibuat menggunakan Sistem Informasi Geografis (SIG) dengan metode tumpang susun (overlay) dengan lima parameter, yaitu elevasi daratan, kemiringan lahan, jarak dari garis pantai, jarak dari sungai, dan penggunaan lahan. Penelitian dibagi menjadi dua tahap yaitu tahap pengumpulan serta pengolahan data dan tahap survei lapang yang dilakukan di 4 kecamatan yaitu Kecamatan Cilacap Selatan, Kecamatan Cilacap Utara, Kecamatan Kesugihan dan Kecamatan Adipala. Klasifikasi tingkat kerentanan tsunami dibagi menjadi lima kelas yaitu sangat rendah dengan luas wilayah sebesar 268 ha (0,25%), rendah dengan luas wilayah sebesar 18.708,94 ha (17,16%), sedang dengan luas wilayah sebesar 54.510,29 ha (50%), tinggi dengan memiliki luas wilayah sebesar 33.711,67 ha (30,92%) dan sangat tinggi dengan luas wilayah sebesar 1.815,90 ha (1,67%)., The southern coastal area of Cilacap Regency is one of the areas that has a high probability of being affected by earthquakes and tsunamis. This is due to the position of the Cilacap Regency area which is very close to the meeting of the IndoAustralian Plate and the Eurasian Plate. This study aims to identify, map and analyze the distribution of tsunami vulnerability levels in the southern coastal area of Cilacap Regency, Central Java. The tsunami vulnerability map was created using the Geographic Information System (GIS) with the overlay method using five parameters, namely land elevation, land slope, distance from the coastline, distance from the river, and land use. The research was divided into two stages, namely the data collection and processing stage and the field survey stage carried out in 4 subdistricts, including the Sub-District of South Cilacap, North Cilacap, and Adipala. The classification of tsunami vulnerability level is divided into five classes: very low with an area of 268 ha (0,25%), low with an area of 18.708,94 ha (17,16%), medium with an area of 54.510,29 ha (50%), high with an area of 33.711,67 ha (30,92%) and very high with an area of 1.815,90 ha (1,67%).
Keyword: Cilacap Regency, Coastal Vulnerability, GIS, Tsunami

Judul: Sintesis Flavon dari Fenol dan Benzoil Klorida
Abstrak: Flavone is a class of flavonoid, commonly found in plants with wide bioactivity spectrum. A widely used flavone synthesis route is through acidcatalyzed oxidative cyclization of β-diketone. In this study, unsubstituted flavone had been synthesized via 5-step from phenol, with 22% yield and successfully increased the yield of previous study on Fries rearrangement of phenyl acetate and benzoylation of o-HAP steps. Phenol was acetylated resulting 93% phenyl acetate. AlCl3-catalyzed Fries rearrangement in 1.5 hour and at 120 °C converted phenyl acetate into o-hydroxyacetophenone (o-HAP) with 40% yield. AlCl3 as catalyst produced o-HAP with higher and reproducible yield compared with BF3·Et2O and ZnCl2. Benzoylation of o-HAP followed by Baker-Venkataraman rearrangement of the ester product using KOH in dried pyridine produced β-diketone 1-(2- hydroxyphenyl)-3-phenylpropane-1,3-dione. The yield of ester and β-diketone were 71% and 85%, respectively. Finally, oxidative cyclization of β-diketone with sulphuric acid as catalyst produced 99% of flavone. The flavone product had been characterized spectroscopically and its melting point as well.
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