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Characteristics of Urban Heat Island Condition in DKI Jakarta
No full textDKI Jakarta area with high CO2 emission and 84,95 % of built-up areas (year of 2009) cause urban heat island (UHI). To overcome UHI problems, its characteristics must be known. Trend analysis of surface temperature areas was conducted by comparison of surface temperature spatial distribution of 2006 with 2010. UHI analysis based on geograpical coordinates were also conducted. High surface temperature of 34 ºC was on inner city and decreasing to sub urban area. High surface temperature were especially on high density bulit-up areas. Priority of solving UHI problems are conducted on high surface temperature areas
Landslide Risk on the Farmland at the Arjuno Volcano Complex of East Java
Get PDFThe purposes of the study are (1) studying the characteristics of the landslide hazard level, vulnerability, and capacity dealing with the seasonal plant farmland, and (2) developing the conceptual model disaster risk of landslide for the seasonal plant farmland at the stato volcano area. Sampling of the land factor was carried out in a purposive way and the sampling of the people was carried out accidentally. The analysis was conducted descriptively, parametric and non-parametric statistics, and spatial analysis of ecological map, land shape, slope, soil and land use. The findings showed that the extremely high landslide risk occurred at the cone shape of the incised volcano and the slope of the incised volcano. The economic vulnerability of one-seasonal crop farmland was about Rp. 8,879,310 ha/year-Rp. 44,036,061 ha/year. While, the socio-economic factor of the farmers was generally characterized by a transition into a periurban area. The conceptual model tated that the resources of seasonal plant farmland with the high risk of landslide can be cultivated with the acceptable risk if the vulnerability of agricultural commodity is low in economic value and the capacity of farmers cultivating it is high
Assessment of Mangrove Ecosystem Degradation to the Population of Polymesoda erosa in Segara Anakan, Cilacap
Get PDFSegara Anakan is a unique ecosystem with lagoons, mangrove and lowland. One of biota living in mangrove ecosystem is Polymesoda erosa. The species is valuable both economically and ecologically. This study aims to determine population of P. erosa and to analyze its relationship with mangrove degradation in Segara Anakan, Cilacap. Purposive Random Sampling was used to collect the clams data and plots sampling techniques were applied to obtain vegetation data. The result shows that there are very weak correlations between P. erosa and mangrove. Based on GIS analysis, mangrove area in Segara Anakan was 8036.9 ha. P. erosa str ongly cor r elates to envir onmental components namely water content of soil, temperature and light intensity. People utilized P. erosa as source of food, income and land hoard
Urang Cave Karst Environmental Development, as Tourism Object
No full textKarst environment become an alternative tourist destination as well as to boost local revenues. In karst environments in Grobogan District, Central Java Province, formed Urang Cave, with an interesting endokarst phenomenon. This study aims to do zoning district Urang Cave as tourist sites. The research method is using contour maps as a base map of Urang Cave karst environment geomorphological mapping. Geomorphological data processing is using ArcView GIS 3.3 program. Land use map refers to RBI, scale 1:25.000. Geomorphological analysis refers to the Ministry of Energy and Mineral Resources No. 1456.K/20/MEM/2000, and petrography. Each development zone is analyzed its geophysical environmental element, then set scoring and value summation. For comprehensive environmental element analysis, chemical analysis of rocks, and water-soil chemistry. In reference to Minister of Energy Mineral Resource decrees No. 1456/K/20/MEM/2000, Urang Cave zoning defined into 3 (three) zone, as follow: the Protected Zone, Cultivation Zone 1, and Cultivation Zone 2. Protected Zone, consists of Urang Cave tunnel/hallway with a unique spheleothem in it. This zone as a cave tracking site tourism, potential to produce karst water as a decent drinking water while maintaining hardness. Cultivation Zone 1 is spreading about 200 m in distance from outer appearance of spring around the cave hallway. In this zone mining of cave sediments may be done in the inactive form caves, without changing the state of the existing major exokarst morphology. Cultivation Zone 2, an outer zone, located farthest from the tunnel/hallway Urang Cave. Utilization of this zone as a limestone mining quarry, although only on a small scale
Study of Transportation Movement Generation in Bandung City by using QuickBird Imagery Remote Sensing and Geographic Information System
Get PDFThe objective of this study is to examine the transport movement generation in Bandung City by using QuickBird imagery remote sensing and Geographic Information Systems. The method used in this research is spatial approach by quantitative descriptive analysis. It resulted that the greatest movement generation come from the regular housing types of 3440 people per hour. The District with the greatest generation was Sub Ujungberung, i.e. 55,501 people per hour, whereas the highway with the greatest amount of generation is Soekarno-Hatta Street of 51,014 people per hour
Landslide Suceptibility Zonation in South Sulawesi
Get PDFLandslide Hazard Zonationin South Sulawesi. Landslides are natural disasters that can cause substantial loss in the form of life and properties. Therefore, it is necessary to inventory landslide-vulnerable areas. A weighted summation model (Dibyosaputro, 1998) was applied to determine the landslide-vulnerable areas in the Geographic Information Systems (GIS). Factors that trigger the landslides are geology (rock properties, stratigraphy, structural geology, weathering level and earthquake), climate (rainfall), soil (solum thickness), topography (slope), vegetation (vegetation density) and human (land use); Siagian Sugalan (in Sutikno, 1991) in combination with Dibyosaputro (1998). There are five classes of landslide vulnerability i.e. invulnerable, fairly vulnerable, quite vulnerable, vulnerable, and very vulnerable. In general, South Sulawesi is quite vulnerable to landslides, but there are three regencies very vulnerable for landslides; Luwu, Northern Luwu and Northern Toraja.Keyword : landslide, South Sulawesi
Effect of the Meteorological Conditions to Spring Water Availability in Some Karst Region at Gunungkidul Districts (Meteorologist Water Balance Analysis Study for Drought Mitigation)
Get PDFThe objective of this study is to understand the influence of meteorological conditions of logva water availability in karst area, Gunungkidul Regency. Meteorological condition analysis was determined by creating meteorological water balance using Thornthwaite Mather method. Water availability condition was determined by using multi-temporal images. Then, the result of water balance was matched with the logva water availability derived from multi-temporal images. The result shows that meteorological conditions will influence logva water availability in karst area, Gunungkidul Regency. It was shown by comparing the amount of logva in surplus months and deficit months. The amount of logva in surplus months is more than in deficit months. In addition, the longer meteorological water deficit, the amounts of detected logva decreases. Based on that condition, it means that meteorological water balance analysis can be used to plan disaster mitigation based on the time and duration of deficit months
Typology, Dynamics, and Potential Disaster in The Coastal Area District Karst Gunungkidul
Get PDFThis study aims to determine the typology, dynamics and potential disasters in the coastal area of Gunungkidul, Yogyakarta Special Province. The results showed that the typology formed in the coastal region is structurally shaped karst Gunungkidul coast, Wave Erotion Coast, marine deposition coast, coast erosion land, coast and sub-aerial deposition of man-made coastal typology. Coastal dynamics that occur in karst Gunungkidul coastal areas affected by dominant geodinamic processes, hydrodynamic and antropodinamic. There are several potential disaster in the karst Gunungkidul coastal region, namely tsunami, rip currents, abrasion, and waves reflection
Hasil Aman Penurapan Airtanah untuk Kebutuhan Non Pertanian di Kabupaten Bantul
Get PDFThere are three objectives of this research. First, to calculate the potency of groundwater in Bantul District, second, to calculate the utilization for non agricultural usage and third, to analyze the safe yield of groundwater exploitation for non agricultural usage. To achieve these objectives, groundwater potency is calculated by static method, i.e. by multiplying area width, aquifer thickness and specific yield. Non Agricultural usage is determined by calculating the water utilization for domestic, industry, hotel and livestock. Safe yield is calculated base on area width, groundwater fluctuation and its specific yield. The groundwater resources potency of research area that has area width 506,85 km², amounted 10.059.393.198 m³/year, whereas the safe yield is 260.365.868 m³/year. Water utilization for domestic, industry, hotel and livestock is 21.658.541 m³/year. Reviewed number of potency and utilization, the potency of groundwater in the research area is still able to meet its water needs for non agricultural because the usage have not exceeded its safe yield. Although the groundwater potency is high, the agricultural sector in Bantul District does not use groundwater resources significantly
Dampak Transformasi Wilayah terhadap Kondisi Kultural Penduduk (Tinjauan Perspektif Geografis)
Get PDFThis research was conducted in Yogyakarta-Surakarta Corridor aiming at analyzing the impacts of regional transformation on the cultural life of the citizens. Method applied in this research is based on the survey technique, with 120 household has been taken as the sample. Sampling technique based on stratified random sampling has been implemented in 4 villages that represent different degrees of accessibility, namely: Maguwoharjo Village-Sleman Regency (very high accessibility), Sumopuro Village-Klaten Regency (high accessibility), Danguran Village-Klaten Regency (medium accessibility), and Jatirejo Village-Boyolali Regency (low accessibility). Analysis technique is taken based on the descriptive quantitative analysis. The findings of this study show us that regional transformation has impacts on citizens cultural condition in the forms of some changes in traditional practices of dealing with pregnancy, birth, transition from childhood to adult life, marriage, and death, from complex practices to simpler ones. In the geographical perspective, this research also reveal the spatial variation (based on the 4 type of the village that represent different degrees of accessibility) from the impact of regional transformation on the cultural life of the citizens