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All Journal NUSANTARA : Jurnal Ilmu Pengetahuan Sosial Geodika: Jurnal Kajian Ilmu dan Pendidikan Geografi Dialog
Admiral Musa Julius
Badan Meteorologi Klimatologi dan Geofisika
Religion Humanities Economics, Econometrics & Finance Education Environmental Science Social Sciences

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Pengukuran Kecepatan Gelombang Seismik Menggunakan Metode Refraksi Pada Lapisan Tanah Dangkal Admiral Musa Julius; Rian Mahendra Taruna; Shandy Yogaswara Surya Putra; Pande Komang Gede Arta Negara; Bryan Fitzgerald Amos Rumy; Alghani Yullatifah; Else Nopianti; Nurain Silvana Akuba; Taufan Taufik; Hendri Subakti; I Dewa Ketut Kerta Widana
Geodika: Jurnal Kajian Ilmu dan Pendidikan Geografi Vol 4, No 1 (2020): Juni 2020
Publisher : Program Studi Pendidikan Geografi Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/geodika.v4i1.1915

Abstract

The strong and felt earthquake with magnitude 6.5 occurred in 119 km to the southeast of Cilacap Regency, Central Java Province at a depth of 48 km. The earthquake centered on the sea at coordinates 8.48o latitude and 109.17o east longitude on January 25, 2014. The earthquake triggered damage in several locations, including the districts of Banyumas, Kebumen, Cilacap and Purworejo. In order to mitigate natural hazards, this study aims to determine the relationship between seismic wave velocity and depth of layers near the surface in shallow geological structures. The method used in this study is the seismic refraction method. This method is done by interpreting seismic signals from man-made waves that spread near the surface of the earth. The seismogram will display the travel time of the waves, the distance between the waves and the source of the waves themselves. The structure of the geological layers that exist in the earth can be estimated based on the magnitude of the seismic wave velocity. This research is located in the campus area of the Indonesian Institute of Sciences Karangsambung. Measurements were made considering its location close to the center of the earthquake and the uniqueness of the rock formed by the removal of the ocean floor. Based on the results of the study it is known that there is a relationship between seismic wave velocity and the depth of the layers near the surface. The deeper the layer of soil from the earth's surface, the seismic wave velocity will be higher.
DISASTER RISK REDUCTION LESSON FROM HALMAHERA SWARM 2017 AND LOMBOK EARTHQUAKE 2018 Rohmat Hidayat; Admiral Musa Julius; Wilopo Wilopo; I Dewa Ketut Kerta Widana
NUSANTARA : Jurnal Ilmu Pengetahuan Sosial Vol 7, No 1 (2020): NUSANTARA : Jurnal Ilmu Pengetahuan Sosial
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (686.954 KB) | DOI: 10.31604/jips.v7i1.2020.238-245

Abstract

Three years ago, we were shocked by Halmahera Swarm 2017 and two years ago Lombok Earthquake 2018. This article is purpose to show the swarm earthquake which occur fluently in Indonesia, such as Halmahera Swarm 2017 and Lombok Earthquake 2018, also the lesson for Disaster Risk Reduction. The lesson learnt from those earthquakes is importance of the follow up in the form of capacity building in communities on responding the earthquake hazard.
PENENTUAN HARI LIBUR NASIONAL UMAT KRISTEN DI INDONESIA MENGGUNAKAN ALGORITMA ASTRONOMI MEEUS Admiral Musa Julius; Rukman Nugraha; I Putu Pudja
Jurnal Dialog Vol 39 No 2 (2016): JURNAL DIALOG
Publisher : Sekretariat Badan Litbang dan Diklat Kementerian Agama RI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (748.644 KB) | DOI: 10.47655/dialog.v39i2.92

Abstract

Astronomically, Easter falls on the first Sunday following the first full moon after the vernal equinox. In Indonesia, Christian holidays including Easter are regulated by the Ministry of Religious Affairs based on the recommendation of Indonesian Church Union (PGI) and Bishops Conference of Indonesia (KWI). This study objective is to formulate a simple time marker by using Meeus Astronomical Algorithm to determine Christian holidays in Indonesian Gregorian calendar. Another objective is to evaluate the Christian holidays on Indonesian calendar between 1960 and 2015. Finally, this study would also provide prediction for future Christian holidays. This study finds out that the Christian holidays on Indonesian calendar are proven as methodologically accurate. It indicates that Meeus Astronomical Algorithm can produce accurate calculation for determining Christian holidays in Indonesia in the future. KEY WORDS:Meeus astronomical algorithm, christian holidays, Indonesian calendar
Co-Authors Alghani Yullatifah Bryan Fitzgerald Amos Rumy Else Nopianti Hendri Subakti I Dewa Ketut Kerta Widana I Dewa Ketut Kerta Widana I Putu Pudja Nurain Silvana Akuba Pande Komang Gede Arta Negara Rian Mahendra Taruna Rohmat Hidayat Rukman Nugraha Shandy Yogaswara Surya Putra Taufan Taufik Wilopo Wilopo