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Aerial Photo Utilization in Estimating Suspended Sediment in the Wuryantoro Watershed, Wonogiri Santoso, Sugiharto Budi; Priyono, Kuswaji Dwi; Anna, Alif Noor
Forum Geografi Vol 17, No 2 (2003)
Publisher : Forum Geografi

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Suspended sediment load flowing out from a watershed is normally predicated by analysis os suspended sediment of water sample, and the volume of suspended sediment be calculated based on sediment concentration and river discharge. Such field measurements need a lot of field data and they are time consuming. Another method for prediction of suspended sediment by using remote sensing imagery data and recorded rainfall data. The objective of this research is to 1) examine the capability of remote sensing technique to obtain the parameters of the physical data of land in the prediction of suspended sediment; 2) examine the accuracy of the model for prediction suspended sediment. This research is carried out in Wuryantoro watershed, Wonogiri. The main data to obtain the parameters of the physical data of land is infrared aerial photograph on scale 1 : 10.000. the method that used in this research is interpretation of remote sensing imagery data, combined with rainfall data. The result show that the accuracy of landuse is 88.5%, the accuracy of slope is 87.67%. the accuracy of the prediction of suspended sediment by model A3 87.07%, model C1 86.63%, model C2 90.57%, model A8 84.13%, model A9 80.1%, and model C4 78.6%.

Prognosis: The Plan of Integrated Tourism Area of Kapuk Naga Beach, Tangerang, West Java Priyono, Kuswaji Dwi
Forum Geografi Vol 11, No 1 (1997)
Publisher : Forum Geografi

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This paperÂ tries to analyze of prognosis of the Integrated Tourism Area Planning of Kapuknnaga Beach (KWTPK) Tangerang Regency West Java. The two method applied to compose the prognosis are extrapolation and indication. The extrapolation is based on the local area infomation data of contemporary knowledge in the past and presence, while the indication method utilizes the whole interrelation activities programmed with the possible consequences. Land function transformation effects of KWTPK will cause environmental destroy as annual flsh flood, salt water intrusion and polution of urbanâs industry sewage. As further effect there is a raising of turbidity and nitrition degree of sedimentation which make coral-ridge degradation toward annihilation. The coral-ridge annihilation will cause the sea waves power collide with the seashore area directly which threatens KWTPK.

Dynamics Process of Geomorphology at North Coast of Java between the river and the river Pemali Cisanggarung Brebes Central Java Priyono, Kuswaji Dwi
Forum Geografi Vol 12, No 1 (1998)
Publisher : Forum Geografi

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This research was carried out in the Coastal Area of North Java, District Brebes, Central Java. It aims at finding the mechanism of factor that influence the dinamics of coastal geomorphological process and the distribution of the dynamics of the geomorphological process. The primary data consist of coastal forms, coastal building/ human activity, sea current, and distribution of the coastal sediment were collected by field observation and measurement. The secondary data consists of the climate, wave, bathimetry, tide, and regional sea current were collected from the related institutions. The technique of data analysis includes Beaufort Scale is employed to find out the characteristics of wind and wave. The laboratory analysis is used to find out the distribution of the coastal sediment. The discriptive analysis is used to desribe the sea current, tide, bathimetry, and human activity.The outcome of this research indicates that Mousoon wind making waves and longshore current can transport sediments which come from Cisanggarung and Pemali river. The small range tide (95 cm), the fine coastal sediment (clay), the shallow bathimetry (0 â 5 m), and human activity (building coastal pand) to provoke the dynamical changing of coasline. The dynamics of the geomorphologycal process from 1944 to 1964 indicates that the coastal area progressed dynamicly; from 1964 â 1997 indicates that the some coastlines (location 1, 4, 5, and 6) progressed, some coastline (location 2, 3, 7, and 8) regressed, and some coastlines (between location 3 to 4 and location 6 to 7) were relativelly stable.

The Roles of Geographical Study in Spatial Arragement and Regional Development (A Case Study in Sukoharjo District) Priyono, Kuswaji Dwi; Kaeksi, Retno Woro
Forum Geografi Vol 10, No 2 (1996)
Publisher : Forum Geografi

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The following issue explains the role of geography study in spatial lay-out and regional development, taking the regional development of Sukoharjo regency as the case study. The role of geography study in spatial lay-out and regional development lies mainly in the effort to achieve geo information system, i.e. information of regional landscape with its all characteristics, regional problem, regional development potential and the definitive factor of regional development. Making use of geography analysis, Sukoharjo as a brief out line has three geomorphology units with its different physic potential and soial economy, and upÂ to the present it has a tendency of different landÂ function. The three units of geomorphology mention above are: alluvial plain, fluvio-volcanic foot plain of Lawu, and shouthern hill slope of Baturagung. And then, toÂ support the area development of JOGLOSEMAR the future development strategies of Sukoharjo regency is distinguished into three zones, i.e.: industry and comercial zone, urban residential and institution zone, open sphere land and recreation zone.

Feasibility Study of Padarangin Cave Slogohimo Wonogiri for Eco-Tourism Priyono, Kuswaji Dwi
Forum Geografi Vol 17, No 2 (2003)
Publisher : Forum Geografi

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Area of Karst of mount Sewu in countryside of Padarangin own immeasurable of potency to be developed by besides activity of mining namely the tourism activity. Cave of nature found enable to can be developed as tourism, but date not yet been known how big potency of relevant tourism with the cave.Â In line with the problems, this research aim to provide basic data of potency of cave and assess elegibility of cave. Padarangin for ecotourism in Wonogiri Regeny. Method used by survey of field and interview resident. Result of research indicate that cave of Padarangin have mount of cave at height 848 m msl which relative narrow, chamber horizontal as long as 63,8 m and vertical in 32,5 m. Needed by a special equipment to enter cave with capasities 10 â 15 people once the visit/incoming, owning value of sakral trusted by local society. The cave competent to be developed as tourism object of special enthusasm with visit limited.Â

Analisis Karakteristik Permukiman Desa-Desa Pesisir di Kabupaten Kulonprogo Marwasta, Djaka; Priyono, Kuswaji Dwi
Forum Geografi Vol 21, No 1 (2007): July 2007
Publisher : Universitas Muhammadiyah Surakarta

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Settlement is the most important area in the activity of disaster mitigation. The Biggest detriment caused by disaster is generally placed at the settlement or residential area. Thereby, the identification of the settlement characteristics is required to be able to recognize the disaster risk. This research aim to identify the characteristics of the rural settlement on the coastal area in the District of Kulonprogo. This area is chosen based on the consideration of coastal morphological characters. This area have slopeslightly coastal zone which face to Indonesian Ocean. In this situation, hence in the event of tidal wave, there will be wide spread overflowing run up water. Two approaches is used in this research, they are; (1) Morphological Approach, and (2) Behaviour Approach. Both of the approaches is conducted with comparative perspective. The existance of the settlement which have been filtered through settlement and coastal tipology are compared. The data are collected and analyzed through: (1) Mapping and GIS tools; (2) survey method; (3) Indepth interview; and (4) statistical analysis. Thirty household are selected proportionally to setlement unit as a respondent in indepth interview. In order to analyze the data, descriptive analysis (frequency tables) and crossed tables are used. This research indicate that rural settlements on the coastal area in the District of Kulonprogo are spatialy distributed as a ribbon pattern. This pattern are coincident with the shape of the coast and the linearity of the road as well. Most of the buildings are in good condition, and they characterized by moderate housing density. In the term of coastal morphology, the research area is dominated by sandy coast with slopeslightly relief. Generally, the socio economic condition of the peoples living there are low to medium economic level, low education, and rarely medium income. Related to tidal flood vulnerability, this research area is the second level (moderate) hazardeous zone.

Analysis Landslide Hazard in Banjarmangu Sub District, Banjarnegara District Priyono, Kuswaji Dwi; Priyana, Yuli; Priyono, Priyono
Forum Geografi Vol 20, No 2 (2006): December 2006
Publisher : Universitas Muhammadiyah Surakarta

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The objective of the research is to find the most suitable soil conservation practice that may be applied to control landslide hazard. In order to achieve that objective, some research steps must be done, are: (1) to identify the land characteristics of the study area that is based on the understanding of some factors that caused and triggered the landslide hazard, i.e.: slope morphology, rocks/soils characteristics, climatic condition, and landuse; (2) to study the types of landslide that occurs in every landforms and determine the area having ideal landslide form; The proposed landslide in this research is the process of masswasting down-slope as a result of the gravitation action on materials being sliding. The landslide types is including creep, slide, slump, and rocks/soils fall. The methods that being applied in the research include field survey methods and the method for determining landslide hazard by using geographic information techniques. Field survey method was intended to characterize the location of every landslide that have been happened in the study area. The results of field survey were applied as materials for determinating the grade of landslide hazard. Scorring and weighting methods of factors that influence landslide was apllied to determine the grade of landslide hazard. Scor and weight were not same for every parameters used for evaluation. The result of field research shows that landslide happen in every landform unit The study area can be devided into 9 landform unit. The landform units are differentiated into the landslide hazard classes, the study area there were found 5 classes of landslide hazard, namely: (1) vary low hazard equal to 16,65% (1 landform unit); (2) low hazard equal to 7,63% (1 landform unit); (3) medium hazard equal to 37,58% (3 landform unit); (4) high hazard equal to 25,41% (2 landforms unit); and (5) highest hazard equal to 12,73% (2 landform unit). Evaluation of landslide hazard shows hat most of study area have high risk to slide as a result of complex interaction between many factors of landslide.

Aerial Photo Utilization in Estimating Suspended Sediment in the Wuryantoro Watershed, Wonogiri Santoso, Sugiharto Budi; Priyono, Kuswaji Dwi; Anna, Alif Noor
Forum Geografi Vol 17, No 2 (2003)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v17i2.534

Suspended sediment load flowing out from a watershed is normally predicated by analysis os suspended sediment of water sample, and the volume of suspended sediment be calculated based on sediment concentration and river discharge. Such field measurements need a lot of field data and they are time consuming. Another method for prediction of suspended sediment by using remote sensing imagery data and recorded rainfall data. The objective of this research is to 1) examine the capability of remote sensing technique to obtain the parameters of the physical data of land in the prediction of suspended sediment; 2) examine the accuracy of the model for prediction suspended sediment. This research is carried out in Wuryantoro watershed, Wonogiri. The main data to obtain the parameters of the physical data of land is infrared aerial photograph on scale 1 : 10.000. the method that used in this research is interpretation of remote sensing imagery data, combined with rainfall data. The result show that the accuracy of landuse is 88.5%, the accuracy of slope is 87.67%. the accuracy of the prediction of suspended sediment by model A3 87.07%, model C1 86.63%, model C2 90.57%, model A8 84.13%, model A9 80.1%, and model C4 78.6%.

Surface Erosion Impact in Upper Serang Watershed Kemusu Municiaplity Boyolali District Centra Java Priyono, Kuswaji Dwi
Forum Geografi Vol 4, No 2 (1990): December 1990
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v4i2.4854

The aim of this reseach are two fold. The first it to clasify and evaluate the surface crosivity and the second is to map the erosivity hazard. The final yield is a map of ... - ... in 1 : 50.000. the classification of surface erosivity is based on top soil loss maximum using the Universal Soil Loss Equation (USLE) of Wischmeir and Smith Method; that is executed on every unit of land. Land unit is detected through interpretation of false colour I.R. air photograph images, shot in 1981/ 1982, scale 1 : 50.000. The classification fields the following data : erosity intensity is 6,687.5 hm (26.78 percent) is ultimate low; 2,962.5 hm (11.86 percent) is low; 5,025.0 hm (20.12 percent) is medium 5,025.0 hm (20.12 percent) is medium 287.5 hm (1.15 percent) is high, while the in habited area has 4,637 hm (18.57 percent) or classified as a very low intensity.

Analisis Karakteristik Permukiman Desa-Desa Pesisir di Kabupaten Kulonprogo Marwasta, Djaka; Priyono, Kuswaji Dwi
Forum Geografi Vol 21, No 1 (2007): July 2007
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v21i1.1819

Settlement is the most important area in the activity of disaster mitigation. The Biggest detriment caused by disaster is generally placed at the settlement or residential area. Thereby, the identification of the settlement characteristics is required to be able to recognize the disaster risk. This research aim to identify the characteristics of the rural settlement on the coastal area in the District of Kulonprogo. This area is chosen based on the consideration of coastal morphological characters. This area have slopeslightly coastal zone which face to Indonesian Ocean. In this situation, hence in the event of tidal wave, there will be wide spread overflowing run up water. Two approaches is used in this research, they are; (1) Morphological Approach, and (2) Behaviour Approach. Both of the approaches is conducted with comparative perspective. The existance of the settlement which have been filtered through settlement and coastal tipology are compared. The data are collected and analyzed through: (1) Mapping and GIS tools; (2) survey method; (3) Indepth interview; and (4) statistical analysis. Thirty household are selected proportionally to setlement unit as a respondent in indepth interview. In order to analyze the data, descriptive analysis (frequency tables) and crossed tables are used. This research indicate that rural settlements on the coastal area in the District of Kulonprogo are spatialy distributed as a ribbon pattern. This pattern are coincident with the shape of the coast and the linearity of the road as well. Most of the buildings are in good condition, and they characterized by moderate housing density. In the term of coastal morphology, the research area is dominated by sandy coast with slopeslightly relief. Generally, the socio economic condition of the peoples living there are low to medium economic level, low education, and rarely medium income. Related to tidal flood vulnerability, this research area is the second level (moderate) hazardeous zone.

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