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INDONESIA
Indonesian Journal of Geospatial
Published by Institut Teknologi Bandung
ISSN : 20895054     EISSN : -     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 2 No 2 (2013)" : 5 Documents clear
Analisis Deformasi Gunung Api Papandayan Berdasarkan Data Pengamatan GPS Tahun 2002 – 2011 Ilham Jamel; Irwan Meilano; Irwan Gumilar; Dina Anggraeni Sarsito; Hasanuddin Z. Abidin
Indonesian Journal of Geospatial Vol 2 No 2 (2013)
Publisher : Indonesian Journal of Geospatial

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Abstract

Abstrak. Gunung api Papandayan adalah gunung api yang terletak di Kabupaten Garut, Jawa Barat. Gunung api dengan ketinggian 2665 meter di atas permukaan laut itu terletak sekitar 70 km sebelah tenggara Kota Bandung. Gunung api Papandayan merupakan salah satu gunung api aktif di Indonesia. Salah satu metoda pemantaun aktivitas vulkanik gunung api adalah dengan metoda deformasi. Dalam melakukan penelitian deformasi yang terjadi, digunakan data pengamatan survei GPS (Global Positioning System). Pada dasarnya survei ini dilakukan untuk mengetahui pola dan kecepatan deformasi yang terjadi pada Gunung api Papandayan. Dari analisis unsur deformasi ini, dapat diketahui karakteristik deformasi yang terjadi pada gunung api tersebut. Pada Gunung api Papandayan deformasi yang terjadi dipengaruhi oleh tekanan magma dari dalam gunung. Dari analisis yang dilakukan, sumber magma dalam dan sumber magma dangkal mempengaruhi aktivitas gunung. Pada tahun 2003-2005 terdapat dua sumber magma dimana di sana terjadi proses inflasi. Pada tahun 2005-2008 hanya satu sumber yang mempengaruhi dimana di sana terjadi proses deflasi. Pada tahun 2008-Juli 2011 terdapat dua sumber  magma yang mempengaruhi dimana di sana terjadi proses deflasi dan inflasi. Pada Juli 2011-Agustus 2011 terdapat satu sumber magma dimana di sana terjadi proses inflasi. Pada tahun 2003-Agustus 2011 terdapat dua sumber magma dimana di sana terjadi proses deflasi dan inflasi.Kata Kunci : Survei GPS, deformasi, model Mogi 
Analisis Metode GPS Kinematik Menggunakan Perangkat Lunak RTKLIB Henri Kuncoro; Irwan Meilano; Dina Anggraeni Sarsito
Indonesian Journal of Geospatial Vol 2 No 2 (2013)
Publisher : Indonesian Journal of Geospatial

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Abstract

Abstract. One of the GPS kinematic processing software that developed in the current is RTKLIB. RTKLIB is the software which people can downloaded free and used free for it. This software can also perform data processing in fast and the data processing can be integrated in post-processing and real-time. In this study, the ability of RTKLIB tested by using GPS observation data with variations of the baseline length when earthquake not occured and earthquake offset detection from the GPS baseline processing results during earthquake. In this testing the stability of the GPS data processing results are ascertainable and it can be seen also the ability and reliability of the software in detecting earthquake offset. For comparison of the data processing results quality with RTKLIB, in this study selected TTC (Trimble Total Control) to process the GPS baseline of the same observasions From the results of GPS baseline processing with RTKLIB and TTC, it seems that RTKLIB results have better stability than TTC. In short baseline category have standard deviation less than 1 cm, in medium baseline category have standard deviation between 3-6 cm, whereas in long baseline category have standard deviation 3-8 cm. On the offset detection of earthquake, RTKLIB have ability to detect offset in more of baseline length variations than the TTC. Kata Kunci: GPS Kinematik, Offset Gempa, RTKLIBAbstract. One of the GPS kinematic processing software that developed in the current is RTKLIB. RTKLIB is the software which people can downloaded free and used free for it. This software can also perform data processing in fast and the data processing can be integrated in post-processing and real-time. In this study, the ability of RTKLIB tested by using GPS observation data with variations of the baseline length when earthquake not occured and earthquake offset detection from the GPS baseline processing results during earthquake. In this testing the stability of the GPS data processing results are ascertainable and it can be seen also the ability and reliability of the software in detecting earthquake offset. For comparison of the data processing results quality with RTKLIB, in this study selected TTC (Trimble Total Control) to process the GPS baseline of the same observasions From the results of GPS baseline processing with RTKLIB and TTC, it seems that RTKLIB results have better stability than TTC. In short baseline category have standard deviation less than 1 cm, in medium baseline category have standard deviation between 3-6 cm, whereas in long baseline category have standard deviation 3-8 cm. On the offset detection of earthquake, RTKLIB have ability to detect offset in more of baseline length variations than the TTC. Kata Kunci: GPS Kinematik, Offset Gempa, RTKLIB 
Mapping And Evaluating The Impact Of Land Subsidence In Semarang (Indonesia) Irwan Gumilar; Hasanuddin Z. Abidin; Teguh P. Sidiq; H. Andreas; R. Maiyudi; M. Gamal; Y. Fukuda
Indonesian Journal of Geospatial Vol 2 No 2 (2013)
Publisher : Indonesian Journal of Geospatial

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Abstract

Abstract. Semarang is the capital of Central Java province, located in the northern coast of Java island, Indonesia. Land subsidence in Semarang has been widely reported and its impacts can be seen already in daily life. Based on the estimation from Levelling, Interferometric Synthetic Aperture Radar (InSAR), Microgravity and Global Positioning System (GPS) survey methods, land subsidence with rates of up to about 19 cm/year were observed during the period of 1999 up to 2011. Results derived from GPS since 2008 up to 2011 show that land subsidence in Semarang has spatial and temporal variations, with spatial average rates of about 6 to 7 cm/year.Based on the site visit surveys, the impacts of land subsidence can be seen in several forms such as cracks in buildings, damage of infrastructure (road and bridges), tilting and damaged houses, and wider expansion of coastal flooding (tidal flooding). Tidal flooding and tilting and damaged houses frequently occurs in the area where the subsidence rate is high (northern part of Semarang). Cracks in buildings and damage of infrastructure (road and bridges) occur in the boundary of large subsidence area and the less. Keywords : GPS , land subsidence, damages, coastal flooding, Semarang 
Deformation Study Of Darma Dam Using GPS Survey Method Irwan Gumilar; Hasanuddin Z. Abidin; H. Andreas; Teguh P. Sidiq; M. Gamal; M. Irsyam; I.A. Sadisun
Indonesian Journal of Geospatial Vol 2 No 2 (2013)
Publisher : Indonesian Journal of Geospatial

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Abstract

Abstract. Darma Dam is located in the Village, District Kadugede, Kuningan regency, West Java, is a combination of the type heap dam (rockfill) and homogeneous soil deposits. Darma dam holds the potential disaster similar to the disaster Situ Gintung, Tangerang, which claimed hundreds of people. In fact, its potential is much more dangerous, if not anticipated. Darma dam is located in the hills, so that there is automatic in the area underneath paddies, plantations, and residential population that stretches from Kab. Kuningan, Kab. Cirebon, to Brebes, Central Java. Seeing the potential dangers posed by Darma then it should dam was monitored his activities as one of the main ways to mitigate catastrophic collapse of the dam. One of the main methods used to monitor the activity of the dam is deformation using methods that are used to monitor the deformation of the dam is with a survey method GPS (Global Positioning System). GPS surveys have been carried out for dam deformation monitoring Darma on December 9 to 10 May 2009 and 8 to 9 September 2009. GPS survey conducted in 19 point geodetic GPS receivers using two-frequency type. GPS survey detects horizontal and vertical deformation of the monitoring points around the dam Darma, in the order of a few mm in a period of about 5 months. Horizontal movements tend Dam Darma reservoir leads to the outside (away from the water), while for vertical shift seems not so clear (some point to decline (subsidence) and several point increase (uplift)). This study is expected to provide better information on the characteristics of dam deformation Darma. By understanding these characteristics, it can be analyzed potential catastrophic dam collapse Darma in this area and mitigation mechanisms can also be planned. Keywords : GPS, dams, deformationAbstract. Darma Dam is located in the Village, District Kadugede, Kuningan regency, West Java, is a combination of the type heap dam (rockfill) and homogeneous soil deposits. Darma dam holds the potential disaster similar to the disaster Situ Gintung, Tangerang, which claimed hundreds of people. In fact, its potential is much more dangerous, if not anticipated. Darma dam is located in the hills, so that there is automatic in the area underneath paddies, plantations, and residential population that stretches from Kab. Kuningan, Kab. Cirebon, to Brebes, Central Java. Seeing the potential dangers posed by Darma then it should dam was monitored his activities as one of the main ways to mitigate catastrophic collapse of the dam. One of the main methods used to monitor the activity of the dam is deformation using methods that are used to monitor the deformation of the dam is with a survey method GPS (Global Positioning System). GPS surveys have been carried out for dam deformation monitoring Darma on December 9 to 10 May 2009 and 8 to 9 September 2009. GPS survey conducted in 19 point geodetic GPS receivers using two-frequency type. GPS survey detects horizontal and vertical deformation of the monitoring points around the dam Darma, in the order of a few mm in a period of about 5 months. Horizontal movements tend Dam Darma reservoir leads to the outside (away from the water), while for vertical shift seems not so clear (some point to decline (subsidence) and several point increase (uplift)). This study is expected to provide better information on the characteristics of dam deformation Darma. By understanding these characteristics, it can be analyzed potential catastrophic dam collapse Darma in this area and mitigation mechanisms can also be planned. Keywords : GPS, dams, deformation 
Utilization of Web-Based Geographic Information System As a Means of Tree Growth Monitoring Adoption (Case Study: Conservation Areas Hunting Park Masigit Kareumbi) Siska Rusdi Nengsih; Ahmad Riqqi
Indonesian Journal of Geospatial Vol 2 No 2 (2013)
Publisher : Indonesian Journal of Geospatial

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Abstract

Abstract. Tree Adoption Program is a program of reforestation and tree planting actively involving the community as a guardian or foster parent of the trees to be planted. The program is implemented as part of efforts to restore the ability of forests and damaged land to productive back and can ultimately increase the preservation of the environment . To help foster parents and the manager in terms of their adoption of monitoring tree , in this study a Web based GIS will be made. In this web based GIS development, Google Fusion Tables software and Google Maps is eing used. The method of WebGIS development  begins with data collection in the field , then the data is entered into the database in this case is Google Fusion Tables . After that interface implementation ( interface ) based on web was built. To determine the successfully of this WebGIS, we do some test. The results from this study is a Geographic Information System ( GIS ) Web based to assist monitoring the growth and development of tree adoption and are expected to provide convenience to the foster parents and the manager in terms of monitoring. Keywords : Tree Adoption, gis web based, google fusion tables, google mapsAbstract. Tree Adoption Program is a program of reforestation and tree planting actively involving the community as a guardian or foster parent of the trees to be planted. The program is implemented as part of efforts to restore the ability of forests and damaged land to productive back and can ultimately increase the preservation of the environment . To help foster parents and the manager in terms of their adoption of monitoring tree , in this study a Web based GIS will be made. In this web based GIS development, Google Fusion Tables software and Google Maps is eing used. The method of WebGIS development  begins with data collection in the field , then the data is entered into the database in this case is Google Fusion Tables . After that interface implementation ( interface ) based on web was built. To determine the successfully of this WebGIS, we do some test. The results from this study is a Geographic Information System ( GIS ) Web based to assist monitoring the growth and development of tree adoption and are expected to provide convenience to the foster parents and the manager in terms of monitoring. Keywords : Tree Adoption, gis web based, google fusion tables, google maps 

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