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All Journal GeoEco INDONESIAN JOURNAL OF APPLIED PHYSICS
Koesuma, Sorja
Department of Physics, Sebelas Maret University
Astronomy Education Energy Environmental Science Materials Science & Nanotechnology Physics Social Sciences

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Kajian Indeks Bahaya Seismik Regional Menggunakan Data Seismik Pulau Jawa Tahun 1900-2006 S, Sulistiyani; Koesuma, Sorja; W, Nugroho Budi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 01 (2013): IJAP VOLUME 03 ISSUE 01 YEAR 2013
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i01.1210

Abstract

It has been conducted a research about Regional Seismic Disaster Index (RSDI) in Java Island by using seismic data from 1900 – 2006. RSDI is a index showing vulnerability seismic disaster in an area. The hight risk area is the highest risk, the low area is the lowest risk. The highest RSDI areas were Banten, Jawa Barat, and D.I Yogyakarta Provinces. While the lowest RSDI areas were DKI Jakarta and Jawa Tengah Province. Deviations standard value showed the moving RSDI value each region. Region with big RSDI value had high Seismic level were Banten , Jawa Barat, and D.I. Yogyakarta Province.
Identification of Subsurface Structures of Geothermal Potential Area in East of Mount Lawu Using The Gravity Method Koesuma, Sorja; Septianingsih, Mela Budiani; Legowo, Budi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 10, No 01 (2020): IJAP Volume 10 ISSUE 01 YEAR 2020
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (439.376 KB) | DOI: 10.13057/ijap.v10i01.34217

Abstract

Information about the eastern side subsurface stones of Mount Lawu regarding geothermal potential is limited. This research was conducted to provide information regarding geothermal potential in those area by using the gravity method. We did a 18 sites of gravity surveys in eastern flank of Mount Lawu where located in Magetan regency, Ngawi regency and Sragen regency, East Java. The principle of this method is to measure the earth's gravity field, then the value of gravity is corrected by some gravity corrections, i.e. height, tide, drift, normal gravity, free-air, Bouguer and terrain corrections. The Complete Bouguer Anomaly (CBA) shows the formation that related to the rock formation in the subsurface of Mount Lawu. Based on CBA modelling we found that in the eastern flank of Mount Lawu contains of tuff and breccia of volcanic rocks, breccia Jabolarangan and tuff Jabolarangan, lava andesite, igneous rock (pumice), and sedimentary rocks in the form of sandstone and clay. We found a fault structure on six tracks of a research area. Otherwise, we estimated that there is a geothermal potential on the southeast side of the research area
THE ACTIVITIES OF SEBELAS MARET SURAKARTA UNIVERSITY STUDENT STUDY SERVICE (KKN) VOLUNTEERS IN THE EDUCATION OF COVID-19 RESPONSE TO THE COMMUNITY IN BANYUMAS REGENCY Syahrizal, Fadli; Koesuma, Sorja
GeoEco Vol 6, No 2 (2020): GeoEco July 2020
Publisher : Universitas Sebelas Maret (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/ge.v6i2.42549

Abstract

Public understanding and awareness of Covid-19 is still slightly poor that cause them ignore the current situation. This research is carried out in purpose to strengthening the understanding or education of COVID-19 disaster . This article uses descriptive qualitative research method. Where the article present the results of the data as it is without manipulation or other handlings. Data collection techniques used are: 1) Participant observation, in which the researchers play a direct role as the executors and are directly involved in research activities, 2) Interview, to find out the situation through informant, 3) Documents analysis in the form of homecomers' data, and 4) Documentation in the form of  activity photos . Some of the activities or projects carried out by the volunteers of KKN Covid-19 Response are Socialization of the Importance of PHBS (Clean and Healthy Behavior), Assistance of Learning Activities during Covid-19, Online Discussions about Covid-19, The Efforts to Create Food Security within The Scope of Family, and Monitoring of Homecomers Data.
Co-Authors Budi Legowo Darsono Darsono Harjana Harjana Iwan Yahya S, Sulistiyani Septianingsih, Mela Budiani Syahrizal, Fadli W, Nugroho Budi