Teguh P. Sidiq, Teguh
Geodesy Research Division, Faculty of Earth Sciences and Technology, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, West Java, INDONESIA

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

Mapping And Evaluating The Impact Of Land Subsidence In Semarang (Indonesia) Gumilar, Irwan; Z. Abidin, Hasanuddin; P. Sidiq, Teguh; Andreas, H.; Maiyudi, R.; Gamal, M.; Fukuda, Y.
Indonesian Journal of Geospatial Vol 2, No 2 (2013)
Publisher : Indonesian Journal of Geospatial

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1066.967 KB)

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 Gumilar, Irwan; Z. Abidin, Hasanuddin; Andreas, H.; P. Sidiq, Teguh; Gamal, M.; Irsyam, M.; Sadisun, I.A.
Indonesian Journal of Geospatial Vol 2, No 2 (2013)
Publisher : Indonesian Journal of Geospatial

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (942.441 KB)

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 
Studi Pemantauan Penurunan Muka Tanah di Cekungan Bandung dengan Metode Survei GPS dan InSAR Gumilar, Irwan; Z. Abidin, Hasanuddin; Hutasoit, L.M.; Hakim, D.M.; A. Sarsito, Dina; Andreas, H.; P. Sidiq, Teguh
Indonesian Journal of Geospatial Vol 1, No 1 (2012)
Publisher : Indonesian Journal of Geospatial

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1007.913 KB)

Abstract

Abstract. Land subsidence is a phenomena that has been commonly occurs in big cities around the world. Especially in Indonesia, Bandung as the one of big cities in Indonesia, has been identified for land subsidence. This land subsidence is suspected to ground water explotation by the factories which are located around Bandung basin. Land subsidence has caused many problems, such as damage to houses, buildings, and infrastructures (roads, bridges, etc.), and as the most serious problem is that land subsidence can increase the size of areas susceptible for flooding. In 2010 was noted that for almost the whole year, in the south Bandung experienced a terrible flood. Seeing the causes which is caused by land subsidence, it is a necessary to do charachteristic mapping of land subsidence. As one of the method that will be use for monitorizing the land subsidence is using GPS (Global Positioning System) survey and InSAR (Interferometry Synthetic Aperture Radar). In this paper, will be explained about land subsidence that occur in Bandung from GPS data. Keywords : GPS, groundwater, InSAR, land subsidence.