The purpose of this Community Service is to provide knowledge about disaster mitigation, especially the earthquake and tsunami disaster at SMAN 23 Jakarta. This activity was carried out on January 21, 2022 through a zoom meeting which was attended by students of SMAN 23 Jakarta from the MIPA and IPS majors. This activity was initiated by providing a pre-socialization questionnaire through google form which aims to determine the knowledge of SMAN 23 Jakarta students related to disaster mitigation, especially the earthquake and tsunami disaster before socialization, then carried out socialization in the form of exposure to disaster mitigation through presentations and videos, then ended by giving back the socialization evaluation questionnaire which aims to see how far the benefits felt by students and students of SMAN 23 Jakarta from the socialization that has been delivered. Through an evaluation questionnaire given to 11 students after socialization, it appears that there is an increase in the knowledge of students at SMAN 23 Jakarta, where there is an increase of 18.2% in knowledge of students and students related to the mechanism of destruction caused by earthquakes, then there is an increase of 9, 1% knowledge of students related to tips for handling in the event of an earthquake, followed by an increase of 18.2% related to symptoms and early warning of a Tsunami and an increase of 9.6% in knowledge of students and students regarding tips for handling in the event of a Tsunami. From the questionnaire, it can be concluded that this socialization activity is useful and increases the knowledge of SMAN 23 Jakarta students regarding disaster mitigation, especially the earthquake and tsunami disaster, which is then expected to be able to fortify themselves if at any time an earthquake and tsunami disaster occurs in their neighborhood.
Sulawesi and Maluku islands are tectonically under a collision area of four earth crust plates, those are Eurasia, Philliphines Islands, Pacific Ocean and Australian-India Ocean. Palu city in Central Sulawesi island in particular is geologically an area of complex structure. A fault zone of north-west to south-east direction has formed Palu area as a block being squeezed by Palu-Koro strike-slip fault zone. The aim of this research is to know the impact of earthquake happened on October 28, 2018 has caused the fault to activate of being dynamic movement of the area. Using hand camera photos, a morphological survey and analysis show the landslides and slumps could be clearly identified. Rock and soil slide and movement was also strengthened by liquefaction of hydrological fluid content within the Palu block. Morphology of Palu-Koro fault plane was also affected significantly causing landslides and slumps on the fault plane exposed in the earth surface.
Infiltrasi memberikan informasi mengenai seberapa besar kemampuan tanah dalam meloloskan air sehingga menjadi salah satu faktor penentu dalam penentuan daerah resapan air dan mitigasi bencana banjir. Tujuan penelitian ini adalah untuk menentukan laju infiltrasi di daerah Kecamatan Ternate Barat dan Ternate Utara, daerah penelitian masih dalam tahap pembangunan dan terdapat beberapa lahan kosong, sehingga perlu dilakukan penelitian sebelum daerah penelitian meningkat menjadi kawasan maju, dan diharapkan dapat menjadi data penunjang bagi pembangunan daerah kedepannya. Penelitian ini dilakukan dengan pengambilan data laju infiltrasi menggunakan alat <em>double ring infiltrometer</em> secara langsung di lapangan sehingga menghasilkan peta laju infiltrasi dan pengambilan data jenis tanah kemudian dilakukan uji laboratorim menggunakan klasifikasi USCS dengan hasil berupa peta jenis tanah. Hasil penelitian diperoleh laju infiltrasi sebesar 0,14 m/hari – 3,74 m/hari dan jenis tanah berupa pasir gradasi buruk
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