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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 27 Documents
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Search results for , issue "Vol 11, No 2 (1997)" : 27 Documents clear
Study of Merkusii Pine Resin Using Aerial Photograph Mohammadi Ichsan Setyowibowo
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.v11i2.488

Abstract

This study is intended to find out the sap products of Pines mercusii Jungh at de Vries per are unit using variableness of the air photograph i.e. tree height, crown diameter and aree number per hectare. Its result analysis used regression analysis with the programe aid of SPSS for windows. The analysis outcome shows that, crown diameter tree height, relation between tree height and number of tree per hectare and relation between crown diameter and tree number per hectare, there are influence to the sap production per area unit. The formula mode isG = -418,963 + 534314 (D) – 1,316 (TH)2 + 0,142 (TH x NC) – 1,287 (D x NC)Where:       G     =     sap production (kg/hectare/15 days)                      TH   =     average tree height in meter                      D     =     average crown diameter in meter, and                      NC  =     tree number per hectare with determination cooeficien as 0,82, Aest of significant for 0,01 test level
Orthophoto Map as Supporting Data for Urban Development Management Taryono Taryono
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.v11i2.493

Abstract

System and management of urban development, whih its concept is environmental outlands, is hughly depended on the accuracy of data and information. To comply with the deamnd it is neede the availability of integrated urban information which is loaded by relevance, validity, reliability, and timely. The information mode meant, includes 1) information dimension of spatial unit; 2) identification of user information k.e: who needs  the information and on what stage the information shall be used; 3) identification of information requirement of every stage developer; 4) AMDAL of the developed urban area. Input of data and information are achieved by remote sensing on orthophoto as the outcoming of this activity are geometrical and semantical data.
The Utilization of Black – White Panchromatic Aerial Photograph for Mass Movement Study in Karang Kobar Areas, Banjarnegara, Centra Java Imam Hardjono; Karmono Mangoensoekardjo; S Sutikno
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.v11i2.489

Abstract

This is the result of applied remote sensing  for geological study the mass wasting in Karangkobar, the district of Banjarnegara, Central Java. The study on the mass wasting use the remote sensing method, by interpreting the blackwhite panhromatic aerial photographs, on the scale 1 : 50,000. The study is aimed at 1) revealing the capacity of the aerial photograph in supporting the study the mass wasting that an be identified by the aerial photographs; 2) to find out the influence of the physical environment and land-use on the mass wasting processes. The study in performed by using the visual interpretation method of the scale 1 : 50,000 black-white panchromati aerial photograph taken in 1994, using mirror stereoscope. The outcome of the aerial photograph interpretation is varis the quality of data and information. The data of interpretation of aerial photograph and the varis outcome in the spot are further tested in terms of its accuracy, particularly in its reltion with the aerial photograph interpretation. The technique of data analysis of the physical environment and the mass wasting is descriptive – comparative. The result of the study shows that the 1 : 50,000 black-white panchromatic aerial photograph can be used to identify and study both the mass wasting and influence of the physical environment on the mass wasting processes. The degree of identifying the mass wasting based on the aerial photograph interpretation is 75%. Compared to the previous studies, the present study hows that the mass wasting can be identified more easily by means of the 1 : 50,000 black – white panchromatic aerial photograph. Identifying the distribution of mass wasting are: a) the geological element (rock, geological structure, and stratigraphy); b) geomorphological elements (landform and the forming processes); the water condition (surface water and groundwater); and landuse (type and distribution). White marl – claystone type is the physical environmentsal element that has the most type is the physical environmentsal element that has the most dominant influence on the occuring of mass wasting in Karangkobar area.
Migrant and the Impact to Social-Economic of Household at Plumbon, Polokarto Sub-District Wahyuni Apri Astuti
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.v11i2.494

Abstract

This research was caried out in Plumbon district of Mojolaban and it was intended to find out demographyc characteristic and migrant social economy, way of mobility process, factor, and reason which affect mobility and social economy effect of mobility action to the migrant family. The applied method to research was surveying and the area of the research was selected purposively, respondent in the surveying amount to 60 which was collected at random out of 320 population. The research outcome shows that mobility agent include in the group of potential age i.e domination of age 22 – 44 groun amount 63,33 percent. Thier education are relatively low i.e amount to 83.33 percent graduated from grammer school and lower. Or if it is more detailed there are 43.33 percent that did not go to school and did not pass grammer school. The work of respondent are 65 percent as workers of factory and construction. Average income per mount of migrant is relatively low i.e Rp 121.417 – only 30 perecent of then do the side job. The reason is that they have no more time as their working hours is long i.e 48 working hours per week, beside a larger part of them have not special skill. Before mobility action their work in farming, it mean that there  happened the mobility of working. Decision to realize the mobility emerged from respondents them selves and the main information workes of destination area is an informal one. The effecct of go back and forth mobility to the migrant family is their income improvement, if it is compared to their income before mobility, it includes the problem of providing food, clothing, and education.
The Application of Statistical Regression for Geographical Data Analysis P Priyono
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.v11i2.490

Abstract

Application of regression statistic to analyse geography data is getting familiar, as the reason that geography object is really wide, kwantitative approach of geography and availibilty computer software of regression analysis which is getting complete and refresentative. The way of making decision and prediction constitutes the superiority of regression analysis and constitutes the issue which is often met by geographer in the study of geography object. It not only phenomena of human geography, but phisycal geography phenomena is also able to be approtached by regression analysis. For user the attentions that ought to be noticed are 1) regression statistic ought to be appraised as a fool and not as a brain, so that researcher is the main important operator; 2) mastery of geography subject matter constitutes an essential basis; 3) statistic is able to work if there is a detum which is able to fulfill the term of requirements and preceded by a logic causal relation; 4) close attention of reasearcher is highly required; 5) when must, researcher use the  statistic and the relationship between data type and statistical technique.
The Role of Aeolin in The Formation of Earth Surface Configuration and The Influencing Factor Alif Noor Anna
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.
Review of Overlandflow Quality in Densely Settled Sub-Urban Areas S Sudarmadji
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.v11i2.491

Abstract

The study aims to analyse quality of water from overlandflow in the sub-urban area having high of to houses, in the Sinduharjo, Sleman regency. In the sub urban area, the run off originated from paved and impermeable are which is not uniformaly distributed over the area. Run off is iniated from detention storage and overlandflow. Therefore any water pollution of the runoof begin from overlandflow which dissolves constituent within the soil and rock materials. Land cover also determines the dispersion agent of rain water thus the affect the material dissolved in the water. As an input into the catchment system, rainfall affects overlandflow, quantitative, and qualitatively. Overlandflow from open space in the sub-urban area was evaluated based on physical and chemical characteristics. Overlandflow from urban area has chemical parameters such as C, NO2, NO3, and PO4 are higher than those in overlandflow from rural area which is covered by forest and garden. Overlandflow shows BOD and COD in relatively high concentration. Overlandflow is not recomended to be discharge into infiltration wells, unless it is free from parts having high significant contamination.

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