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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 3 No 1 (2014)" : 5 Documents clear
The Spatio Temporal Dynamic of Diffuse Attenuation Coefficient in the Tropical Berau Estuary, East Kalimantan Indonesia Wiwin Ambarwulan; Widiatmaka Widiatmaka
Indonesian Journal of Geospatial Vol 3 No 1 (2014)
Publisher : Indonesian Journal of Geospatial

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Abstract

Abstract. The availability of light in the water column determines the euphotic zone and constrains the type and the vertical distribution of benthic species. Diffuse attenuation coefficient (Kd) is an important apparent optical property (AOP) that provide information about the attenuation of the spectral down welling solar irradiance with depth in the water. Ocean color Satellite provide global coverage of optical water quality parameters at spatial and temporal resolution. Several empirical and semi-analytical models are commonly used to derive Kd at wavelength 490 nm Kd(490) from ocean colour satellite sensors. This study present about the diffuse attenuation coefficient, Kd(490) using semi-analytical approach. The dynamic Kd(490) in the Berau Estuary water was studied and compared with those derived from ocean color satellite sensor, Medium Resolution Imaging Spectrometer (MERIS). The study indicated that Kd(490) of in situ measurement had the best correlation with the Kd(490) of MERIS data of remote sensing reflectance (Rrs) derived with FUB (Free University Berlin) algorithm (R2=0,84). The dynamic of Kd(490) from MERIS data on different date indicated that the Kd(490) have a similar pattern and decreased when going to offshore. Keywords: MERIS, Secchi disc depth, tropical coastal water, Kd(490), a semi-analytical approach
Ship Detection based on Synthetic Aperture Radar Technique Agustan Agustan; Rubby Siddik Agustino
Indonesian Journal of Geospatial Vol 3 No 1 (2014)
Publisher : Indonesian Journal of Geospatial

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Abstract

Abstract. The ability of radar signals to penetrate cloud is one advantage to be used in tropical regionto monitor objects on the surface from the space. Synthetic Aperture Radar (SAR) is onetechnique in radar remote sensing that can be utilized for marine applications such as surfacewaves monitoring, ocean current circulation detection, oil slick monitoring and shipdetection. In order to assess the ability of SAR technique for ship detection, we analyze SARdata acquired by full polarimetric and interferometric airborne SAR in L-band type-2 (Pi-SARL2) from Japan Aerospace Exploration Agency (JAXA). This research explains the strategy inSAR data processing for ship detection application in Lembeh Strait, North Sulawesi Sea. It isfound that long wavelength i.e. L-band is able to identify ships on the sea with incidence angleof radar beam greater then 50 degree gives the best signal clutter ratio between signal fromthe ship to sea clutter variation. The identification includes the size estimation and thelocation. Horizontal-Horizontal (HH) polarization can identify ships clearer in calm seacondition, whereas Horizontal-Vertical (HV) polarization is better in severe sea condition.However, it is difficult to estimate the speed of moving ships on the sea and the shipsmaterial. It is also found that by combining SAR data with VMS (Vessel Monitoring System)data it is possible to identify ships without VMS and useful for improving security issue inmarine sector. Keywords: SAR, ship detection, polarization, VMS
Mapping of Coastal Vulnerability Index on Coastal erosions in The Perspective of Economy (Study Area: Kecamatan Muara Gembong, Kabupaten Bekasi) Aldila Pradhana; Wiwin Windupranata; Wisayantono Wisayantono
Indonesian Journal of Geospatial Vol 3 No 1 (2014)
Publisher : Indonesian Journal of Geospatial

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Abstract. Muara Gembong is a district that located in north coast of West Java and affected by the phenomena of coastal erosion. This phenomenon causes decreased land in Muara Gembong. To find out how vulnerable the villages in these districts by coastal erosion, it is necessary to map coastal vulnerability index. Value of coastal vulnerability index was obtained by classifying of coastal vulnerability index variable based on the value of the class and then it multiplied by the value of the weight of each variable. These variables defined into two, physical variables and non-physical variables (economy). The results of calculation are presented in tables and maps of coastal vulnerability index. Based on the research result, all coastal villages in Muara Gembong are in vulnerable conditions when calculated by non physical variables. If based on physical variables and combination variable of physical and nonphysical, three of five coastal villages are in vulnerable condition. Result of this research described the big potential of lose in economy sector. Keywords: Position, coordinates, Geodetic Reference System, Datum coordinates. 
Problem Identification of Marine Cadastre in Indonesian Archipelagic Perspective Yackob Astor; Widyo Nugraha Sulasdi; Dwi Wisayantono; Sadikin Hendriatiningsih
Indonesian Journal of Geospatial Vol 3 No 1 (2014)
Publisher : Indonesian Journal of Geospatial

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Abstract. Indonesia as an archipelagic country has marine area larger than land area, 13.446 islands (Geospatial Information Agency, 2012) with coastline 95,181 km (Indonesian Maritime Council, 2008), making Indonesia has natural resources of the sea more than the natural resources on land. This potential conditions of marine resources is seen as an opportunity for Indonesia as a developing country to build excellence in coastal and marine field. But during 68 years of the nation's independence, maritime sector has notproved as a sector that can be seeded by the nation and relied by Indonesian people. Based on the literature, one of the main problems in Indonesian ocean is marine boundariesdetermination are unclear and unresolved causes uncontrolled human intervention in managing marine resources and chaotic patterns of use of marine resources, uncontrolled utilization even destructive.  This paper discusses about marine boundaries problems that is happened in Indonesia whether they arise from the country and from abroad. Until now much of Indonesia marine boundaries with neighboring countries are still unfinished. Implementation of UUD1945 Article 18 and 25 junctoLaw No.32/2004 juncto Regulation of the ministry of home affairs No. 1/2006 about determination and demarcation of boundaries (including marine boundary) hasn'trealized. There is no certaintboundaries of exploitation and utilization activities in ocean spacebyinstitutional (sector), nor implementation of marine management in eastern Indonesia that more often faced with the existence of customary marine management caused overlapping claims marine areas that can raisemarine boundariesconflicts between regions, sectors or customary.  In general, marine cadastre deals with how states define, organize and manage marine boundaries in their countries. This condition causes marine cadastre concepts in continental countries such as America, Canada, and Australia can not be fully implemented in Indonesia. Marine cadastre concept for Indonesia should adopt the archipelago needs, in the context associated with UNCLOS'82, Law No. 32 2004 about regional autonomy, Law No.27 2007 about coastal management areas and small islands, and customary marine authority. This paper is part of dissertation research in order to build model of marine cadastre system uses evaluation definition approach and geospatial information principles.  Keywords: Marine Boundaries, Marine Cadastre, Archipelagic Perspective
Optimisasi Spasial Rasio Lahan dalam Pengelolaan Sumber Data Wilayah Pesisir Secara Berkelanjutan Wilayah Studi: Pesisir Selat Madura Jawa Timur (Spatial Optimization of Land Ratio in Sustainable Coastal Zone Resource Management: Study Location Madura Dwi Wisayantono
Indonesian Journal of Geospatial Vol 3 No 1 (2014)
Publisher : Indonesian Journal of Geospatial

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Abstract

Abstract. Agenda 21/1992 chapter 17 and Indonesia Republic Act No. 27/2007 provides a view on the management of coastal zone with the concept of sustainable development. The manifestation of the concept has been transformed into various forms of coastal research management strategies in accordance with the categories and characteristics of state elements (governance, territory and population). A dynamic development of Indonesia as a developing country, makes the issue due to land scarcity and human population arise. By using geographic-demographic approach, the correlation between every element produce different forms of relationships, which one of them is land ratio. The pattern of land ratios tend to be unbalanced (shrink) spatially and temporally. The pattern of these trends impact the entity's land (land use change, changes in land area, land productivity, environmental degradation) and the entities of population (odds work, consumption, the value of income, and poverty). Thereby, the government and local governments should have an appropriate management strategy to the dynamics relationships of human resources and coastal resources along with all the characteristic. This study examined the extent to which the condition of the land ratio can be optimized within the framework of coastal resource management strategies according to the principles of balance and sustainability. The framework is made through a process of transformation of existing land ratio to the optimum ratio of land. Research methodology begins with mapping land ratio from the global level, national level, to the study in the coastal region of the Madura Strait. Spatially, the dynamics approach of coastal resource use unit area of the ecosystem (DAS Brantas and Madura Strait) and administrative area (county and city). From the temporally land use and population dynamics data from 1971-2005 and the prediction of condition land ratio in 2014 and 2025. Optimization process is done by theory of system and theory of optimization approach. Results of spatial land ratio optimization are examined using three location theory approach, there are Alferd Weber, Melvin Greenhut- A Losch and Walter Isard. According to the optimization result, location theory analysis and geographical association, the conclusion of this research is that the spatial optimization method can describe the geographical correlation between land resources and human resources variable, so this method can be used to measure land ratio value and to measure the principle of balance, fairness and equity between regions. Optimization of spatial land ratio in coastal resource management strategies can be placed as a feedback in any planning process, utilization, monitoring and control. Keywords: the state elements, spatial optimization, the ratio of land, geo-demographic, geographical associations, coastal resources, sustainable development.

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