Judul: Analysis of the Location of the Tsunami Evacuation Shelter in Pelabuhan Ratu
Abstrak: Pelabuhan Ratu merupakan ibukota Kabupaten Sukabumi Jawa Barat. Pelabuhan Ratu berada pada Selatan Jawa Barat, ini menandakan bahwa Daerah Pelabuhan Ratu merupakan daerah yang rawan terjadi gempa dan tsunami. Penelitian ini bertujuan untuk mengidentifikasi ketersediaan shelter dan jangkauan shelter, membandingkan jumlah penduduk dengan kapasitas shelter dan mengidentifikasi jalur terdekat menuju bangunan Shelter. Penelitian dilaksanakan pada bulan Februari hingga juni 2022. shelter yang terdapat di Kecamatan Pelabuhan Ratu berjumlah 15 bangunan. sebesar 14,62 %, jumlah persentasi shelter belum terjangkau, Sedangkan sebesar 85,38 % sudah terjangkau. Dari hasil analisis jangkauan, Kecamatan Pelabuhan Ratu masih diperlukan penambahan 1 shelter. Dari hasil analisis kapasitas shelter yang ada sudah memenuhi kebutuhan. Pada penelitian ini dihasilkan 20 rute terdekat menuju shelter., Pelabuhan Ratu is the capital of Sukabumi Regency, West Java. Pelabuhan Ratu is located in the south of West Java, this indicates that the Pelabuhan Ratu area is an area that is prone to earthquakes and tsunamis. This study aims to identify the availability of shelters and shelter coverage, compare the number of residents with the capacity of the shelter and identify the closest route to the shelter building. The research was carried out from February to June 2022. There are 15 shelters in Pelabuhan Ratu District. by 14,62 %, the percentage of shelter has not been reached, while 85,38 % has been reached. From the results of the coverage analysis, Pelabuhan Ratu District still needs to add 1 shelter. from the results of the analysis of the existing shelter capacity has met the needs. In this study, 20 closest routes to the shelter were generated.
Keyword: disaster mitigation, evacuation shelter, tsunami

Judul: Analisis Dampak Bencana Tsunami dan Perencanaan Jalur Evakuasi (Studi Kasus: Kabupaten Sukabumi)
Abstrak: Sukabumi dikategorikan wilayah rawan bencana yang dilintasi oleh Sesar Cimandiri sehingga menyebabkan gempa bumi yang dapat menimbulkan bencana lanjutan berupa tsunami dengan prediksi ketinggian mencapai 20 meter. Penelitian bertujuan mengetahui luasan wilayah dan penutup lahan terdampak, jumlah penduduk erdampak, serta perencanaan mitigasi yang diperlukan. Perhitungan dampak dilakukan dengan memodelkan inundasi ketinggian run-up tsunami 10m, 15m, dan 20m. Permodelan inundasi juga digunakan untuk mengetahui jumlah penduduk terdampak dengan aplikasi InaSafe dan QGIS. Informasi dari InaSafe digunakan untuk perencanaan lokasi shelter yang dapat memenuhi kapasitas serta jangkauan bagi penduduk terdampak tsunami. Hasil permodelan inundasi menunjukkan 9 kecamatan Sukabumi terdampak dengan total wilayah untuk skenario ketinggian run-up 10m, 15m, dan 20m berturut-turut seluas 6781,08 ha, 9703,75 ha, dan 12609,24 ha. Terdapat delapan jenis penutup lahan terdampak dengan kerugian ekonomi mencapai Rp. 3.158.526.457.779. Jumlah penduduk terdampak dari tiga skenario permodelan inundasi tersebut mencapai 135.100 jiwa sehingga perencanaan mitigasi didapatkan sebanyak 81 lokasi shelter darurat dengan 432 rute jalur evakuasi., Sukabumi is categorized as a disaster-prone area which is crossed by the Cimandiri Fault causing an earthquake which can cause a further disaster in the form of a tsunami with a predicted height of up to 20 meters. The research aims to determine the area and land cover affected, the number of affected people, and the necessary mitigation plans. The impact calculation was carried out by modeling the inundation of the tsunami run-up heights of 10m, 15m and 20m. Inundation modeling is also used to determine the number of people affected by the InaSafe and QGIS applications. Information from InaSafe is used for planning shelter locations that can meet the capacity and reach of tsunami-affected residents. The results of the inundation modeling show that 9 Sukabumi sub-districts are affected with a total area for the run-up height scenario of 10m, 15m and 20m, respectively 6781.08 ha, 9703.75 ha and 12609.24 ha respectively. There are eight types of affected land cover with economic losses reaching Rp. 3,158,526,457,779. The number of people affected from the three inundation modeling scenarios reached 135,100 people so that the mitigation plan obtained a total 81 location of emergency shelter locations with 432 evacuation route routes.
Keyword: tsunami, InaSafe, inundation, impact, mitigation

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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