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Forum Geografi
Published by Universitas Muhammadiyah Surakarta
ISSN : 08520682     EISSN : 24603945     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Forum Geografi, Indonesian Journal of Spatial and Regional Analysis (For. Geo) is an open access, peer-reviewed journal that will consider any original scientific article for expanding the field of geography. The journal publishes articles in both physical and human geography specialties of interest to spatial analysis and regional analysis in (but not limited) Indonesia by applying GIS and/or remote sensing techniques.
Arjuna Subject : -
Articles 1,205 Documents
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Easiness of Image Interpretation of Spot XS and Landsat TM for Urban Land Cover Object Identification Agus Suryantoro
Forum Geografi Vol 17, No 1 (2003)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v17i1.594

Abstract

The study that has been out for URGE project “Remote sensing for urban study and landuse planning” is a  especially the possibility and the easiness of interpretability. The easiness of interpretation of satellite image is influenced by sensor, and the physical condition of urban area. SPOT image recorded in 1996 and TM Landsat image recorded in 1994 by the process of digital image are used as the comparison of easiness of interpretation. The contras sharpening method using a filter, the arrangement of composite image, and multispectral classification is applied by respective image. The introduction of covered object of urban area is based on the introduction of spatial and spectral pattern. Visual and digital interpretation that based on multispectral classification has been done to get the accurateness of classification result. The result of this study shows that SPOT image has better detail information than TM Lansat image. But the spectral information of TM Lansat image has more varieties than that of SPOT image so that certain objects, especially straight appearance (street, river, etc) can be  know more by TM Lansat.
Pencemaran Air Tanah di Perkotaan Yuli Priyana
Forum Geografi Vol 5, No 2 (1991): December 1991
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v5i2.4679

Abstract

Air merupakan kebutuban hidup bagi manusia, baik sebagai mahkluk hayati maupun untuk kehidupan sehari-hari (MCK), irigasi maupun industri. Sebagian dari kebutuhan tersebut diambilkan dari air tanah. Dengan semakin meningkatnya jumlah penduduk terutama di perkotaan secara tidak langsung akan berpengaruh terhadap persediaan air tanah yang ada baik kualitas maupun kuantitas. Pengambilan air tanah yang terus meningkat dan melebibi save yield pada daerah pantai akan mengakibatkan intrusi air laut yang mengakibatkan air tanah menjadi asin. Demikian juga semakin banyaknya limbah yang dibuang oleh manusia ke dalam tanah baik limbah rumah tangga maupun industri akan mrngakibatkan pencemaran air tanah. Pada umumnya limbah yang berpengaruh terhadap air tanah di perkotaan adalah limbah rumah tangga (MCK) maupun limbah industri. Pengotoran atau kontaminasi air tanah ini akan berbahaya pada manusia yang telah meminumnya. Oleh karena itu dalam pemanfaatan sumber daya air tersebut hendaknya dapat dimanfaatkan clengan sebaik-baiknya dan dijaga kelestariannya.
Consumption of Water for Household Needs and the Affecting Factors at Banyudono Boyolali Alif Noor Anna; Retno Woro Kaeksi; Yuli Priyana
Forum Geografi Vol 14, No 1 (2000)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v14i1.448

Abstract

The consumption of drinking water for a community is different from one area to the other. This is normally influenced by the population development, socio-economic, cultural, and physical conditions mainly related to the supply of drinking water and how to exploit it. Banyudono district is an area located in the regency of Boyolali. The development of this area depends on Boyolali City and Kartasura district. Such a location enables the area to have a process of the physical and socio-economi developments. In addition, it has an influence upon social behaviour to consume water. This research is aimed at knowing the average consumption of household need and analyzing the factors influencing the utilization of water as drinking water. The result of this research indicated that 1) the average consumption of a human being for drinking water was 79,37 litter a day. It means that the onsumption of a human being for drinking ater generally ranged from 60 to 80 litter a day; 2) most of the ater was consumed to meet basic needs such as cooking, drinking, bathing, and washing; 3) the difference of the average consumption was influenced by the kind of water source and how to exploit it; 4) a parameter of the most significant socio-economic condition that took effect on the average consumption for drinking water was the parameter of income with correlation of 0.362 and the significant level of 0.01.
Adaptive Capacity Mapping of Semarang Offshore Territory by the Increasing of Water Level and Climate Change Ifan Ridlo Suhelm
Forum Geografi Vol 27, No 1 (2013): July 2013
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v27i1.5084

Abstract

Tidal inundation, flood and land subsidence are the problems faced by Semarang city related to climate change. Intergovernmental Panel on Climate Change (IPCC) predicted the increase of sea level rise 18-59 cm during 1990-2100 while the temperature increase 0,6°C to 4°C during the same period. The Semarang coastal city was highly vulnerable to sea level rise and it increased with two factors, topography and land subsidence. The purpose of this study was to map the adaptive capacity of coastal areas in the face of the threat of disasters caused by climate change. The parameters used are Network Number, Employee based educational background, Source Main Livelihoods, Health Facilities, and Infrastructure Road. Adaptive capacity of regions classified into 3 (three) classes, namely low, medium and high. The results of the study showed that most of the coastal area of Semarang have adaptive capacities ranging from low to moderate, while the village with low capacity totaling 58 villages (58.62%) of the total coastal district in the city of Semarang.
Discrimination of Mangrove Ecosystem Objects on the Visible Spectrum Using Spectroradiometer HR-1024 Amal Arfan
Forum Geografi Vol 29, No 1 (2015): July 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v29i1.794

Abstract

The study was conducted to determine whether the vegetation in the mangrove ecosystem, can be contrasted with another objectt, using Spectroradiometer HR-1024. The data used is data visible spectrum(400-700 nm)  which resulted in 204 bands. The analysis used is the integrated analysis with three levels. First, using ANOVA to determine significant differences in spectral reflectance between vegetation with water, wet soil and dry soil. Second, using Step wise Canonical Discriminant Analysis to identify the most sensitive band for discrimination reflection spectrum. This analysis which resulted in six bands are considered practical to distinguish vegetation with another object namely  401.5 nm, 416.9 nm, 508.2 nm, 599.3 nm, 660.3nm and 689.2 nm. Third using the Jeffries-Matusita separability index which resulted in the separation index of mangrove vegetation, water, wet soil and dry soil is 1.414.
Validation of Satellite Daily Rainfall Estimates Over Indonesia Fatkhuroyan Fatkhuroyan; Trinah Wati; Alfan Sukmana; Roni Kurniawan
Forum Geografi Vol 32, No 2 (2018): December 2018
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v32i2.6288

Abstract

Rainfall is the most important factor in the Earth’s water and energy cycles. The aim of this research is to evaluate the accuracy of Global Satellite Mapping of Rainfall (GSMaP) data by referencing daily rain-gauged rainfall measurements across the Indonesian Maritime Continent. We compare the daily rainfall data from GSMaP Moving Kalman Filter (MVK) to readings from 152 rain-gauge observation stations across Indonesia from March 2014 to December 2017. The results show that the correlation coefficient (CC) provides better validation in the rainy season while root mean square error (RMSE) is more accurate in the dry season. The highest proportion correct (PC) value is obtained for Bali-NTT, while the highest probability of detection (POD) and false alarm ratio (FAR) values are obtained for Kalimantan. GSMaP-MVK data is over-estimated compared to observations in Indonesia, with the mean accuracy for daily rainfall estimation being 85.47% in 2014, 85.74% in 2015, 82.73 in 2016, and 82.59% in 2017.
The inventorying and mapping of landslide potential in Manado – Indonesia Mithel Kumajas
Forum Geografi Vol 20, No 2 (2006): December 2006
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v20i2.1815

Abstract

Landslide constitutes a frequent problem occurs in Manado. It happens for many times from year to year and brings both material disadvantage and casualty. The way and hilly topography of Manado, unstabel geological condition, high rainfall, and the improper land use are assumed to be the trigger for the problem. The objective of this study is to inventory and map landslide potential area as well as to design the preventive plan. Mapping method employs spatial approach by using land unit as the analysis unit. The technique of analysis applies the assistance of GIS with its ArcView soft ware. The result of mapping shows that the level landslide potential from potential until very potential category in Manado is 1.815,72 Ha; potential is 1282,10 ha and very potential category is 533,62 ha. The faktors cause the landslide comprise of rocky declivity, high rainfall, and the condition of stone as well as the unstabel and porous soil. The existence of Cesar zone extends to the center of the city and the use of settlement land located in improper zone become the trigger that quicken the occurrence of landslide. The strategy implemented to manage the landslide potential area can be carried out through 1) law enforcement in relation to city lay out, 2) landslide prevention through civil and vegetative technique, 3) the improvement of social consciousness of the danger of landslide disaster and the attempt for social empowerment, and 4) the provision of the landslide potential danger map as the ground for policy making in the effort to manage the landslide disaster.
Analisis Keruangan Terhadap Perubahan dan Persebaran Permukiman Kumuh di Kecamatan Banjarsari Kota Surakarta Tahun 2001-2005 D Dahroni
Forum Geografi Vol 22, No 1 (2008): July 2008
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v22i1.4928

Abstract

Since the year 1998 up to the mid of 2005, in the district ofBanjarsari, there happened an increasing amount of slum areas which might endanger the environmental balance. This research aims at (1) identifying the shift of distribution pattern from the settlement diffusion in the district of Banjarsari Surakarta in the year 2001-2005. (2) Identifying the alteration form of the unoccupied land into slum areas in the district of Banjarsari Surakarta. (3) Identifying the characteristics of slum area dwellers in the district of Banjarsari Surakarta. This research uses the survey method, secondary data analysis and map analysis. The data ar alysis used is tlie closest neighbor analysis, table of frequency, crossed tables and descrip ave analysis. The result shows that (1) the distribution pattern of the slum areas appeared in the district ofBanjarsari in the year 2001 is the random distribution pattern while the one in 2005 is the dissemination pattern. Such pattern indicates the grc wing amount and interraction with the means of transportation and economic condition in those slum areas. (3) The lands which are altered into slum areas in the district of Banjarsari during 2001-2005 take place in the unoccupied areas owned by the state.(3) The distribution of age among the slum area inhabitants is around 41-61 years of age (49%) while tb biggest amount is the new arrivals (57%). The region of Sub province Sragen has the bigges percentage in the distribution of the city inhabitants origin in the district of Banjarsari. Regionally, the inhabitants who come from the hinterland of Surakarta or ex Surakarta residency took the amount lof 73.68%. The highest percentage of educational level of the slum area inhabitants in the district of Banjarsari is the uneducated residents or those from low education level (55%). Most of the respondents occupations of the slum area dwellers in Banjarsari are in the informal sectors (82%) The number of family member in the district of Banjarsari is around l-
Conservation Priority Land Selection in Sangiran Mountainous Dome Area using Remote Sensing Data Bambang Sulistyo
Forum Geografi Vol 10, No 2 (1996)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v10i2.503

Abstract

The purpose of this study is to describe the features of soil forms on PKS derived from the data which are related to the erosions that happen. Based on this, the location of the priority of the soil conservation can be chosen. The research geomorphologic hazard method applied in this study is the continuation of the previous research which has yielded the study of soil form area. The result of that study is combined to other data to know IBE which covers topography, slope area, the count, it can be determined the priority of the soil conservation based on the delineation of the soil forms which are interpreted from remote sensing data especially the aerial photograph. The conclusion are 1) the choice of the priority of soil conservation and cultivating plants an be done by knowing IBE; 2) the degree of priority of the soil conservation and plant cultivation in PKS depend on the spreads of the soil forms. The soil forms happened is the features of the difference of rock formations, litology, the degree of erosion, landslide, and the process of diafirism. The priority sequences of the loations of the soil conservation and plant cultivation are S3 dan S4 followed by S5, s1, S2, and finally F1.
Landslide Suceptibility Zonation in South Sulawesi Nasiah Nasiah; Ichsan Invanni
Forum Geografi Vol 27, No 2 (2013): December 2013
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v27i2.2376

Abstract

Landslide 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.

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