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JGISE-Journal of Geospatial Information Science and Engineering
Published by Universitas Gadjah Mada
ISSN : 26231182     EISSN : 26231182     DOI : https://doi.org/10.22146/jgise.51131
Core Subject : Engineering,
Engineering
JGISE also accepts articles in any geospatial-related subjects using any research methodology that meet the standards established for publication in the journal. The primary, but not exclusive, audiences are academicians, graduate students, practitioners, and others interested in geospatial research.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 9 Documents
 1 
Search results for , issue "Vol 2, No 1 (2019): June" : 9 Documents clear
3D Modeling and Volume Estimation of Riverbed Layers Based on Sub Bottom Profiler Measurement Data Nurkhalis Rahili Rahili; Bambang Kun Cahyono
Jurnal Geospasial Indonesia Vol 2, No 1 (2019): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.39974

Abstract

The river is one of the transportation routes for human beings, as well as the pipelines for oil and gas distribution, or as power cable lines and communications networks. In order to not disturb the pipe or cable due to the activity of the ship through the river, it is necessary to study the sediment from the river. This study aims to determine the type of sediment, the thickness of the sediment, the depth of sediment, and volume of the sediment itself. It can be done with acoustic measurements.The measurement of the acoustic survey in this activity uses a sub bottom profiler Strata Box HD type Chirp. By using this tool, it can obtain sediment layer up to a certain depth. The result of the measurement will be interpreted to obtain the travel time of the acoustic wave as it reflected on the sediment layer. The travel time than processed and corrected with the tidal measurement data which made over 14 days to obtain the actual depth value from the result with the sub bottom profiler. The depth data then were quality tested based on reference IHO SP-44 2008 at order 1a.This activity produces a 3D model of river layer, depth profile and sediment layer volume estimation. The result of the quality tested obtained corrected depth data has met the established standards of order 1a IHO SP-44 2008. Using a 95% confidence level, the test results in the first layer is 0.271 m with an error tolerance at 0.510 m. For the second layer has a data quality test results 0.491 m with a tolerance at 0.521 m. The result of depth profile is a long section and cross section. The long section indicates that in the deflection of the river area there is a steep decline compared to the area before and after the river deflection. In addition, the river deflection area has a thinner sedimentary layer. The volume estimation of sediment layers obtained in the area of the activity is 4932752.739 m3.
Study of the Impact of the Growth of Settlement Areas Against Decreased Capacity of Shallow Aquifer and Groundwater in Semarang City (2014-2017) Yudo Prasetyo
Jurnal Geospasial Indonesia Vol 2, No 1 (2019): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.40564

Abstract

The growth of urban areas dominated by residential and industrial land cover will encourage the high use of clean water and land loading (compaction due to building loads). The use of water in people's daily lives and industrial activities still relies on nature, namely in the form of groundwater or aquifers. Continuous water collection, especially in big cities in Indonesia, will have a negative impact on the environment which results in changes in the environment itself. Environmental changes due to the impact of taking water that might occur are land subsidence (LS). For this reason, this study will examine the relationship of the impact of the development of residential areas in the city of Semarang on the decline of shallow aquifer capacity (SAC) and LS.Observation of changes in KAD in this study was observed in the type of shallow aquifer using shallow wells (MAT) data. Whereas for observing land subsidence using the PS InSAR method. For the growth of the residential area of Semarang, it will be focused on the land cover of residential areas in the 2014-2017 period. The overlapping method is used to correlate the effect of changes in KAD and PMT in Semarang City.PS InSAR processing results obtained an average value of average land subsidence per year with a range of 0 ± 3.4 cm to 4.5 ± 3.4 cm and the results of processing obtained the largest land subsidence information found in the District of North Semarang, East Semarang, West Semarang, Pedurungan and Genuk. The change in KAD in the amount of 60% to> a decrease of> 80% occurred in Genuk Sub-District, North Semarang, West Semarang, Pedurungan, Gayamsari. Whereas settlements with population levels based on land use classification maps for settlements are in Genuk, West Semarang, Gayamsari, Pedurungan, Tembalang, and Banyumanik Districts
Minimum Isoseismal Distribution Based On Macroseismic Interpolation For Earthquake Disaster Mitigation in Palu City Telly Kurniawan; Bambang Sunardi; Supriyanto Rohadi; Yusuf Hadi Perdana; Tio Azhar Prakoso Setiadi
Jurnal Geospasial Indonesia Vol 2, No 1 (2019): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.40763

Abstract

Palu City is the city that suffered the most damage and many casualties, effect from event Palu-Donggala earthquake on September 28, 2018. This earthquake triggered a tsunami, liquifaction and landslides which caused difficulties in determining a closest safe location for the temporary evacuation site in location affected disaster. The aftershocks that occurred after the main earthquake caused unrest for refugees and village government officials, because it was feared that the location to be used as a temporary evacuation site would run into the impact of an earthquake similar to other severe locations. To determine a safe location around the impact area destructive earthquake, information about the map of the minimum isoseismal distribution is very important. This study aims to map Minimum Isoseismal Distribution as the place that has the smallest disaster risk in areas affected by the earthquake, tsunami, liquefaction and landslides. The research methodology that be done are plotting and interpolate data from macroseismic surveys then were verified using satellite citra data and photo documentation of survey. The results showed that a minimum isoseismal distribution was found in 8 areas, located in the village: Kabonena, Lere, Kamonji, Siranindi, between Boyaoge and Nunu, Tawanjuka, Palupi and Tinggede.
Calibration of Digital Cameras for Mobile Mapping Purposes Parningotan Hasudungan Situmorang
Jurnal Geospasial Indonesia Vol 2, No 1 (2019): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.40817

Abstract

The development of the use of non-metric digital cameras in the form of action cameras for collecting geospatial data has become very useful and supports the work of mobile mapping for making three-dimensional (3D) models. Each lens has an error in the formation of a projection design and also an error during production. For example in a fisheye lens, which has a distortion model, namely radial distortion, tangential distortion, and shifting of the optical center point. The camera is considered to be calibrated if the principal distance, principal point offset, and lens distortion parameters are known. The preparation stage that needs to be done on the mobile mapping work in making 3D models is camera calibration. This research aims to determine the value of internal orientation parameters of a digital camera (action camera) that is used for mobile mapping purposes. Camera calibration in Photogrammetry aims to determine the geometric model of the camera described by Interior Orientation Parameters (IOP), including focal length, shifting principle point (PP), distortion, and other parameters. The calibration method used is the test field calibration. The calibration activities carried out on digital cameras are by measuring targets in the field using coded targets from Agisoft software. The calibration process is also carried out when processing photo data with Agisoft Photoscan Professional software. Camera calibration results using bundle adjustment on Agisoft Photoscan Professional software produce IOP (Interior Orientation Parameter) parameters, namely principal distance (C), principal point offset (Xp, Yp), and lens distortion parameters (K1, K2, K3, P1 , P2, B1, B2). Based on the results obtained, it can be concluded that Maximum Observational Radial Distance Encountered is 1 mm.
Implementation of CORS GNSS and local geoid for precise orthometric height determination in land subsidence region (a case study in Semarang City) Laode M Sabri
Jurnal Geospasial Indonesia Vol 2, No 1 (2019): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.40828

Abstract

Geoid has an important role in converting geodetic heights to physical heights, both in orthometric height system and normal height systems. At present, Semarang City already has gravimetric geoid with centimeter-level precision. This gravimetric was validated by geometric geoid measured by static method.  GNSS (Global Navigation Satellite System) measurement using static method needs long observation time and costly because it requires network that connect baselines and points. This study aims to implement CORS (Continous Operating Reference Station) GNSS in measuring geodetic height and to apply gravimetric geoid in orthometric height calculations. In this research, the gravimetric geoid recalculation process was carried out using gravity disturbance data of 2016. The geoid fitting process was carried out iteratively based on gravity data and modification of the integral of Hotine. Geodetic height measurements were carried out at 40 points distributed olong 50 km leveling network. Geodetic height measurements were refered to CORS GNSS of BIG (Geospatial Information Agency) and UNDIP (Diponegoro University) to produce standard deviation ranged from ±0.003 m to ±0.055. Geometric geoid checking with previous gravimetric geoid before fitting produced standard deviation of  ±0.037 m and  datum offset of -0.690 m. Geometric geoid checking for recent gravimetric geoid after fitting produces standard deviation of ±0.043 m and datum offset of -0.010 m. This study concluded that the refering geodetic coordinates to CORS stations by 1 hour observation of rapid static method and processing baselines in commercial software are sufficient for the determination of orthometric height in centimeter-level precision. This study also concluded that gravimetric geoid fitting based on gravity data shifting can minimize datum offset and shrinkage in geoid map.
Land Valuation with Analytical Hierarchy Process and Regression Method in Grogol Sub-District, Sukoharjo District Arga Fondra Oksaping
Jurnal Geospasial Indonesia Vol 2, No 1 (2019): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.40845

Abstract

Land valuation is a set of processes to determine the value of land plot. In conducting land valuation, it is necessary to considering the factors that affect values of land which caused land values in each region to be different. In order to objective land valuation, it is necessary to analyze the magnitude of factors that influencing the value of land. The Analytical Hierarchy Process (AHP) method is used in this study to analyzing the magnitude value of land in Grogol Sub-district,  Sukoharjo District. Factors used are field distance to CBD, field distance to road, field distance to river, field distance to health facilities, field distance to educational facilities, and land use. The data used in this study were obtined from Sukoharjo Land Office, which is the data of sale and purchase transaction in Grogol Sub-district, Sukoharjo District, totaling 178 data from January to December 2016. Transaction data and factors influence land value are analyzed by Regression Method to obtain the best value model in Grogol Subdistrict, Sukoharjo District.
Determination of Boiler Building Verticality in Power Plant Construction using Terrestrial Laser Scanner (TLS) Mohamad Bagas Setiawan; Yulaikhah Yulaikhah; Ruli Andaru
Jurnal Geospasial Indonesia Vol 2, No 1 (2019): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.40846

Abstract

Nowadays, Indonesian government is focusing on build up infrastructures, especially power plant infrastructures to fulfil electrical energy needs. One of the power plants that will be built up is Waai power plant which located on Waai village, Maluku Province. Waai power plant had been postponed since 2014. In order to build this power plant, the advisability of the building needed to be checked from its verticality level. This level was determined by Terrestrial Laser Scanner (TLS). The TLS’s point clouds were registered using two methods, there are target to target and cloud to cloud methods. There are 65 beams on the power plant boiler building, but only 31 beams that used as the samples to assign the verticality of the boiler construction. The verticality level was set on the X-axis, Y-axis, and the resultant of the X and Y axis by using Pythagoras theorem after the bottom and top coordinates from each beam was determined. The Queensland Building and Construction Admission Standards and Tolerances Guide 2016 was used as tolerance of verticality level. The result of the verticality calculation presented on the X-axis consisted from -0ᵒ 1’ 26,678” to 0ᵒ 4’ 11,778” with the average was 0ᵒ 1’ 40,820” and major direction pointed the positive axis. On the Y-axis, the average was -0ᵒ 0’ 45,772” with -0ᵒ 3’ 33,345” as minimum and 0ᵒ 1’ 25,319” as the maximum and the major direction went to the negative axis. The verticality on the resultant of X and Y axis was from 0ᵒ 0’ 45,225” until 0ᵒ 4’ 15,674” with the average was 0ᵒ 2’ 27,057” and the direction was to the southeast. After the verticality number was compared with the tolerance, the verticality level was smaller than the standard on each beam. From the result, we can conclude that the boiler building on the Waai power plant can be categorized safe to reconstruct.
Geometric Accuracy Study of Orthorectification Based on Sensor Model Refinement in Imagery Subset Using ORFEO Toolbox (OTB) Andri Suprayogi; Nurhadi Bashit
Jurnal Geospasial Indonesia Vol 2, No 1 (2019): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.41453

Abstract

Large scale base map can be obtained by various methods, one of them is orthorectification process of remote sensing satellite imagery to eliminate the relief displacement caused by height variation of earth surface. To obtain a  map images with good quality,  it requires additional data such as sensor model in the form of rational polynomial coefficients (RPC), surface model data, and ground control points Satellite imageries with high resolution  file size are relatively large.  In order to process them,  high specification of hardwares were required. To overcome this by cutting only a portion of the images, based on certain study areas were suffer from of georeference lost so it would not be able to orthorectified. On the other hand,  in several remote sensing software such as ESA SNAP and Orfeo Toolbox (OTB)  subset or pixel extraction from satellite imagery,  preserve the imagery geometric sensor models. This research aimed at geometric accuracy of orthorectification carried out in a single scene of Pleiades Imagery within the Kepahiang Subdistrict, located at Kepahiang Regency, Bengkulu Province, by using DEMNAS and the imagery refined sensor mode, and ground control points taken using GPS Survey. Related with the raw imagery condition which consists of Panchromatic and multispectral bands, this study were separated to assembly, pan sharpening , and sensor model refinement stages prior to orthorectification carried out both in the original or full extent imagery and the result of subset extent imagery. After  these processses taken place, we measure the accuracy of each full and subset imagery.These procedures were carried out using Orfeo toolbox 6.6.0 in the Linux Mint 19 Operating system. From the process log, running time in total  were 7814.518  second for the full extent and 4321.95 seconds for the subset processess. And as a big data process, the total of full extent imageries was 83.15 GB  while the subset size  was  only 30.73 GB.  The relative accuracy of the full extent and its subset imagery were 0.431 meters. Accuracy of the  sensor model refinement process are  1.217 meters and 1.550 meters with GCP added, while the accuracu of  the orthorectifications results were  0.416 meters and 0.751 meters by using ICP.  Variation of execution time may caused by the data input size and complexity of the mathematical process carried out in each stages. Meanwhile,  the variation of accuracy may  caused by the check or control points placements above satellite Imagery which suffer from uncertainty when dealing with  the sub-pixel position or under 0.5 meters.
Study of parcels-based Land Use Planning in Urban areas dan Rural Areas (Case Study of Mantrijeron Sub-district, Yogyakarta City and Bambanglipuro Sub-district, Bantul Regency) Hary Listantyo Prabowo
Jurnal Geospasial Indonesia Vol 2, No 1 (2019): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.41848

Abstract

The Land Use Planning (LUP-Neraca Penatagunaan Tanah/NPGT) is a balance between land availability and the needs of tenure, use and utilization of land according to the Regional Spatial Plan (RTRW) function area. LUP is arranged sectorally and regionally. Examples of sectoral LUP are rice field planning and plantation field planning. While regional LUP is arranged at a certain administrative level. So far LUP has been prepared based on zones/ regions that are adjusted to the RTRW functions area. The LUP at the sub-district administrative level began to be initiated and to be implemented after almost all of district/ city LUPs were implemented. Sub-district LUP was supported by the availability of the Subdistrict Spatial Detail Plan (RDTR) on a 1:5.000 scale which became a reference in the permittance of space utilization, so that the subdistrict LUP was arranged on the same scale. In this paper an assessment of sub-district LUP was made based on the Parcels Map (PBT) that available in the land office. PBT displays land parcels based on land ownership and land tenure. LUP is carried out in urban areas and rural areas. Location of urban areas in Mantrijeron Sub-District, Yogyakarta City, while rural areas in Bambanglipuro Sub-District.The stages of sub-district LUP consist of : data collection/ inventory; processing and analysis of data; and compilation of results and discussion. The data collection/ inventory phase includes activities for preparing work maps and collecting primary data and supporting data. The processing and analysis stage includes data processing on sub-district LUP compilation with GIS application (ArcGIS) and LUP analysis. LUP analysis consists of : analysis of land use changes, analysis of land use suitability and analysis of land availability. The stage of result preparation and discussion includes the preparation of the result of the analysis, a comparison between two regions that were studied, conclusions and recommendations. The result of the parcels-based sub-district LUP shows that land tenure and ownership information is very detailed; the information of land use and utilization in one parcel of land can consist of more than one type. In urban areas, the size of land parcels is relatively small with more varied types of land use and utilization than rural areas. As a note, that the coverage of parcels map in rural areas still needs to be improved because there are still empty areas.

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