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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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Spatial Diffusion of Leather Industries (Case Study at Magetan District) Dilahur, Dilahur
Forum Geografi Vol 16, No 2 (2002)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v16i2.609

Abstract

After the rise and the fall of the tides and the change of the activities as the phenomena which happen in the daily life of sociaety, the hange of spacing or distributionn of industrial businesses becomes one of the new phenomena. The objective of this research is to know the process of the diffusion from leather industry in Magetan Subdistrict. This research uses secondary data analysis and direct observation. The result of this research shows that the change (the rise and fall of the tides) in leather industry has producted the movement of distribution or spacing in which the center of the main production is declined and the new center may arise. In this movement, it seems that the existence of the specification on types of activity, like having similar leather, shoescraft, beltcraft, and sendalcraft become the serious phenomena. This kind of the change and its development is signed by the change of position from becoming employee to be new employer, having some employees that may become the employers at any time and so forth. The style of the diffusion which happen is the style of mixing diffusion in which the business on leather industry becomes wider reaching around the village while the original village (Kauman) is still as the center of industry, although it has so limited activities because the business is always declined.
The Role of Vegetation in Controlling Air Temperature Resulting from Urban Heat Island Prasetyo, Lilik Budi; Rushayati, Siti Badriyah; Shamila, Annisa Dyra
Forum Geografi Vol 32, No 1 (2018): July 2018
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v32i1.5289

Abstract

Urban Heat Island (UHI) is a phenomenon exhibited by many worldwide cities. Cities, which exhibit UHI, possess higher air temperature as compared with air temperature in the surrounding areas. However, existing UHI profiles are those occurring in subtropical areas which are, of course, very much different from those in tropical cities. Therefore, the objectives of this study are to describe the UHI’s profile and the role of tree vegetation in controlling and reducing air temperature in a tropical region’s urban areas and, particularly, in DKI Jakarta. In this study, we carried out a spatial analysis of land cover and the distribution of air temperature. In this regard, we based our analysis of the potency of tree vegetation in reducing air temperature in UHI’s profile on the distribution of air temperature in various types of land cover which extended from north to south and from east to west. The ranges of air temperature in land cover in the form of built-up areas were 29.2-39.5 ⁰C, non-tree vegetation 28.6-35.6 ⁰C, and tree vegetation 27.0-35.7 ⁰C. Accordingly, tree vegetation has the highest potential to reduce air temperature and to overcome the phenomenon of UHI.
Empirical Model for Calculating the Peak Discharge and The Time Delay of Flood of Synthetic Hydrograph Unit in Sumbawa Soewarno, S; Kustaman, Kustaman
Forum Geografi Vol 13, No 1 (1999)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v13i1.463

Abstract

This research was carried out in Sumbawa island, it aims to determine: 1) the value of Snyder’s CT and CP coefficient of the synthetic unit hydrograph; 2) the empirical model to estimate of CT and CP coefficient; 3) the empirical model to estimate the peak flow and time lag of synthetic unit hydrograph. Based on rainfall – runoff data, Snyder’s T and CP coefficient of the synthetic unit hydrograph can be derived by syntheti means. The empirical model of CT and CP coefficient can be estimated by using the stepwise method of the multiple regression models. Measurable characteristics of watershed, including watershed area (LDP), length of main river (PSU), slope of watershed (KIM), forest area (LHT), sawah area (LSW), tegal area (LTG), grass area (LRUM), and mean annual rainfall (CHJ) are used to estimate these model. The most appropriate model is selected from a statistical test. Result of analysis show that the model can be used to estimate of Snyder’s CT and CP coefficient. These model can be used to make the empirical model to estimate the peak flow and time lag of synthetic unit hydrograph of ungauged watershed in Sumbawa island.
Negotiating Ability of Using Condom to Prevent Sexually Transmitted Disease and HIV/AIDS of Commercial Sex Worker Woman in Region Surakarta Widodo, Arif; Kaeksi, Retno Woro
Forum Geografi Vol 19, No 2 (2005): December 2005
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v19i2.4847

Abstract

The data from Board of Health in Surakarta City, on 8 September 2005, from 155 commercial sex worker woman had blood examined, there were 7 persons positive in HIV. One of factor affecting the high infection HIV/AIDS in women commercial sex worker was low use of condom. Aims of this research was to know factor-factor associated with didn’t use of condom and social aspect negotiations about using condom (education, economics status, working experience, devilling place, occupation, ethnic, religious, and income). This research is qualitative research using guided group discussion technique, in-depth interview, and participatory observation. Subject for this research were 30 persons, consist of 25 commercial sex worker, 3 guest, 1 room owner, and 1 parent. Independent variables in this research are social economics characteristic, demography and community characteristics. Dependent variables as PPSK capability in condom using negotiating to prevent sexually transmitted disease and HIV/AIDS. Commonly, despite knowing that everyone, including themselves, is vulnerable to AIDS infection, the respondents ignore asking the guest/partners for condom use. Most of them don’t ask for condom use due to their fear of either being the target of the guest anger and bad words, or losing money from them. Women commercial sex worker Silir in using condom and prevent sexual transmitted disease had free education from Board of Health in Surakarta City. In the street prostitutes are low support from peer, room owner, hotel owner, or guest about using condom for women commercial sex worker in illegal place, caused women commercial sex worker in the street more potential and high risk to spread sexual transmitted diseases than they were operated in Silir. The low capability of the street prostitutes for negotiating condom use with the guest customers results from: misperception on "safe-sex" behavior for seeking "help", economic and psychology pressure, free and uncontrolled companion relationship unavailability of condom in the room. This research result serve as an assessment study of the need which will be developed into a comprehensive promotion strategy.
Remote Sensing and GIS for Surface Water Resources in Rawa Biru – Torasi Merauke Papua Hartono, Hartono; Meteray, Barano SS; Farda, Nur Mohammad; Kamal, Muhammad
Forum Geografi Vol 20, No 1 (2006): July 2006
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v20i1.1807

Abstract

The research describe about surface water ecosystem study in Merauke Papua by using multisource and multistage remote sensing data which was splitted into two parts based on the study areas. First, it is for micro scale spatial analysis focusing on the Rawa Biru – Torasi watershed, while the second is for macro scale spatial analysis for Transfly ecoregionin the floodplain areas of Merauke. Multispectral approach was adopted for Landsat image analysis, followed by field survey on the selected areas. Auxilary data used are maps, secondary documents in order to improve understanding of the areas. Interview and discussion with related institutions (Wasur National Sanctuary, Potable Water Services, Internal Affairs Government, Forestry Service) accordingly were carried out. The research result showed that remote sensing imagery are usefull for surface water resources study. Physical condition of the Rawa Biru – Torasi watershed, vegetation analysis by using multitemporal data, wetland type, hydrological process in the floodplain were presented. Rawa Biru watershed as a resource for drinking water supply environmentaly decreased considerably due to the species invasion, with successively dominated by hydrophilla, tebu rawa, rumput pisau, dan Mellaleuca and sedimentation took place in the main body of swamp. Upper part of the watershed is actually included in the Papua New Guinea, in long water resources development scheme, it need administratively belong to one recharge areas for the watershed.
The Role of Aeolin in The Formation of Earth Surface Configuration and The Influencing Factor Anna, Alif Noor
Forum Geografi Vol 11, No 2 (1997)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v11i2.486

Abstract

Configuration of the earth surface is molded by the interaction of endogenous and exogenous forces. The outcome of the interaction usually has the shape of special charracter. Configuration charracter is then applied to grouping of more simple form called landform. It so happens that one of the landform function is to make geomorphology research more easier. Que of the earth surface configuration is molded by wind force the result of this activity is called the landform which is originally molded by wind process. There are two folds function of wind process i.l: erosion (= coracoid process and deposifronal force). Coracoid process usually takes place on vertical as well as horizontal plane. Coracoid on vertical plane will have the shape of yardang, while on horizontal plane has the shape of pillars, needless, and zenguen. It so happens that depositional wind will shape ripples, sanddunes, and loess.
Kajian Ketersediaan Air Permukaan pada Beberapa Daerah Aliran Sungai (Studi Kasus di Sub DAS Temon, Wuryantoro, Alang, dan Keduang) Murtiono, Ugro Hari
Forum Geografi Vol 23, No 1 (2009): July 2009
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v23i1.4996

Abstract

The study was conducted at some watersheds (Temon, Wuryantoro, Alang, and Keduang sub Watersheds), in Wonogiri District. These four sub Watersheds are Main River whose outlets go into Wonogiri Dam. The study will calculate of water availability and the need of water for various uses at four sub Watersheds. The Thornwaite and Mather method was used to calculate the of water availability. The results indicate that : (1) The water availability at Temon Sub Watershed) 35.435.875 m³ and the need of water per year sebesar 51.053.247 m³, the water minus 30,59% per year; (2) The water availability per year Wuryantoro sub Watershed 17.788.417 m³ and the need of water per year 22.413.430 m³, the water minus 20,64% per year; (3) The water availability per year at Alang sub Watershed 31.372.317 m³ per year and the need of water per year 69.566.500 m³, the water minus 54,90% per year; (4) The water availability per year geological at Keduang sub Watershed 438.527.889 m³ and the need of water per year 452.611.219 m³, the water minus 3,11% per year; (5). Watershed having condition needs improvement especially an effective water resourcesplan, allocating, and distributing of water according to priority establishment, e.g., water pond, revegetation with low evapotranspiration potential, developing infiltration well, protecting water spring from disconcerting, and construction of water reservoir.
Analysis Physical Characteristics of Land for Estimated Runoff Coefficient as Flood Control Effort in Comal Watershed, Central Java Miardini, Arina; Susanti, Pranatasari Dyah
Forum Geografi Vol 30, No 1 (2016): July 2016
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v30i1.1131

Abstract

Watershed conditions in Indonesia have been degraded over time, which is marked by increasing area of critical land. The vast area of critical land was evidenced to be a serious threat for watershed carrying capacity which eventually affected the hydrology imbalance in the watershed area. One among watershed with degraded lands which seriously requires priority handling is Comal watershed. The purpose of this study is to identify the physical characteristics of Comal watershed which have significant influence in determining the runoff and calculating the runoff coefficient by taking into account the parameters of watershed’s physical characteristics. The method used in this analysis is Cook method, which is done through the estimation of runoff coefficient by evaluating the parameters of slope, infiltration, vegetation cover, and drainage density.  The unit of analysis in this study is land mapping unit. Results of the four parameters are classified and the classification is done so that the scores of the runoff coefficient are figured out, while the peak discharge determination is performed by using the Rational method. The analysis showed that runoff coefficient of Comal watershed is 61.63%, which can be categorized as high. The runoff coefficients and peak discharge calculations of each sub watershed, respectively, Comal Hilir of 52.65% with peak discharge 505.68 m3/sec, Genteng of 65.04% with peak discharge 542.44 m3/sec, Lomeneng of 64.00% with peak discharge 194.23 m3/sec, Srengseng of 64.10% with peak discharge 270.46 m3/sec, and Wakung Hulu of 62.34% with peak discharge 686.64 m3/ sec. The most influential runoff coefficient factors are, respectively, infiltration rate, slope, vegetation cover, and drainage density. Flood control priority in Comal watershed should be preoccupied to increase the infiltration rate through a combination of three conservation techniques of mechanical, vegetative, and biology.
“Kampung” as a Formal and Informal Integration Model (Case Study: Kampung Pahandut, Central Kalimantan Province, Indonesia) Hamidah, Noor; Rijanta, R; Setiawan, Bakti; Marfai, Muh. Aris
Forum Geografi Vol 31, No 1 (2017): July 2017
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v31i1.3047

Abstract

Kampung is a mixed formal and informal settlements which has a long history. Kampung has always been occupied by millions of in Indonesia. Kampung shows its capacity to integrate formal and informal activities both within the kampung itself and activities at city level. This research try to explore Kampung Pahandut, Central Kalimantan Province, Indonesia as a case study of embryo settlement close to the river. The objective of this research is to describe of formal and informal in formal and informal activities within Kampung Pahandut. This research attempt to study the pattern and the forms of socio-economic integration of the community. This research applies mixed method (qualitative and quantitative) through field observation as a step to find the integration of formal and informal activity in Kampung. Data collection is primarily to record both social and economic activities since field observation records physical appearances of infrastructure. In addition, this Kampung research was also conducted through in-depth interview to explore information from the selected resource persons. This research approves that Kampung, in the case of Kampung Pahandut, is not separated both physical and social from the city of Palangka Raya. It is reveal that internal social activity of  Kampung are able to maintain ‘gotong-royong’ and external social activity showed by ‘green kampung’. Kampung Pahandut is a part of the Palangka Raya city government by kampung improvement program. It means integration through physical and social activities shows that kampungs are not isolation settlements. Kampung has its significant contributions to the social and physical of the Palangka Raya city. It is as proven by formal and informal activities of Kampung Pahandut which is found to be fully integrated to the city of Palangka Raya.
Sattelite Data for Fish Concentration Identification in Marine Santoso, Sugiharto Budi
Forum Geografi Vol 10, No 1 (1996)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v10i1.518

Abstract

Knowledge shortcoming in fish-living management as well as marine biotic living cycle and fishermen’s fault technology capability causes their inadequate skill to catch fishes in large scale. To increase the result of caught fishes, it necessary to give the fishermen suffice technology of when and where the shool of fishes site in the sea. Recognizing the school of fishes in the sea is guided with the satellite data of NOAA, GOES, ADEOS as well as Landsat and the others which are able to point the site of where fishes are schooling. Besides, by making use of GPS satellite the position of fishermen’s ship then could be detected so that the movement ould be easily observed.

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