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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
 110   111   112   113   114 
Characterizing the Urban Growth from 1975 to 2003 of Hanoi City Using Remote Sensing and a Spatial Metric Pham Minh Hai; Yasushi Yamaguchi
Forum Geografi Vol 21, No 2 (2007): December 2007
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v21i2.2355

Abstract

This study explores an approach of combining remote sensing and a spatial metric to characterize land use change in Hanoi, Vietnam. The work is based on the land cover information of 4 different times derived from Landsat and ASTER data from 1975 to 2003. This study adopted the spatial metrics; the percentage of like adjacency (PLADJ), which calculates the number of like adjacencies involving the focal class, divided by the focal number of cell adjacencies involving the focal class, multiplied by 100 to convert to a percentage. The result successfully showed proportions of the fragmented and the aggregated areas in urbanization for each development time. During the rapid urbanization periods in 1975 – 1984 and 1984 – 1992, a large proportion of the interior non developed and aggregated non developed was converted to developed landscape, whereas fragmented non developed to developed markedly happened in 2001 – 2003. The study provided intuitive description and separation of three urbanization patterns such as infill, expansion, and outlying. Quantitative assessment revealed that the proportion of the expansion and infill steadily increased, whereas the proportion of the outlying decreased in past 30 years. The combined approach using remote sensing and a spatial metric is an effective method to improve understanding of urbanization patterns and to provide visualization of spatial – temporal change due to urbanization.
Kesenjangan dalam Pembangunan Kewilayahan Saratri Wilonoyudho
Forum Geografi Vol 23, No 2 (2009): December 2009
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v23i2.5009

Abstract

The purpose this paper is to provide a broad overview of the recent patterns and trends of urban growth, and to discuss the relationship between urbanization and regional imbalances in Indonesia, and also to assess the policy implication. Over the last 20 years many urban areas have experienced dramatic growth, as a result of rapid population growth and as the world‘s economy has been transformed by a combination of rapid technological and political change. The population of the cities roughly doubles when we add the zones to the metropolitan core. In the cases of Semarang, there is much more than a doubling. The inner zones are where the action is migrant come there from both the core and elsewhere in the country. Net migration in many cases contributes as much as two thirds of the population growth in these zones, whereas in the city cores, net migration contributes little to growth. A comprehensive model suggest that regional imbalances in Indonesia is influenced by economic-structural and social demographic factors.
Penyediaan Data Dasar dalam Pengembangan Kota Aris Poniman
Forum Geografi Vol 9, No 1 (1995)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v9i1.523

Abstract

Ketersediaan data dasar dalam pengembangan kota sangat diperlukan baik dalam rangka perencanaan tata ruang tingkat nasional, propinsi, maupun kabupaten/kotamadia. Hal ini mendukung amanat dalam GBHN 1993 bahwa pembangunan perkotaan ditingkatkan dan diselenggarakan secara berencana dan terpadu dengan memperhatikan rencana umum tata ruang, pertumbuhan penduduk, lingkungan permukiman, lingkungan usaha, dan lingkungan kerja serta kegiatan ekonomi dan kegiatan sosial lainnya agar terwujud pengelolaan perkotaan yang efisien dan tercipta lingkungan yang sehat, rapi, aman, dan nyaman. Permasalahan data dasar dalam perkembangan daerah perkotaan antara lain adalah data dasar dan peta dasar yang belum seluruhnya baku, dan data dasar sumberdaya alam, sumberdaya buatan, dan sumberdaya sosial ekonomi yang sangat dinamis. Pemutakhiran data dasar dan penyusunan basis data digital secara terpadu pada tingkat nasional, propinsi, dan kabupaten/kotamadia perlu terus dikembangkan.
Identification of Settlements Quality in Pekanbaru Slums M. Amin Sunarhadi; D Dahroni; P Priyono
Forum Geografi Vol 19, No 1 (2005): July 2005
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v19i1.4570

Abstract

One of human basic needs is housing with high competitive situation caused increasing need of housing, spatial restriction, and economics factors. These influence to decreasing of housing quality then consequence to slums settlement. Undistributed population at Pekanbaru shown at Tangkerang Utara, Teluk Leok, and Meranti Pendak where slums are growing up. The aim of this stucdy is identifying slums area in Tangkerang Utara, Teluk Leok, and Meranti Pandak with spatial, complexity, and environmental approach. Data collected as primary and secondary data. Then are 28 indicators to identified slums area and classified quality of settlements. Results of this study shown that Tangkerang Utara have Medium Quality with typology as slums at center city, Teluk Leok have Low Quality with typology as slums at river side, and Meranti Pandak have Medium Quality with slums at urban fringe. This study also found that slums in Pekanbaru have spatial associated with low housing quality, community with low economic capacity, high density of population and building, bad sanitation, susceptible of fire and natural hazard, weakness of spatial planning implementation, and insufficient ratio of environmental settlement infrastructure. In pekanbaru, slums growth as continuous process.
The Run up Tsunami Modeling in Bengkulu using the Spatial Interpolation of Kriging Technique Yulian Fauzi; Suwarsono Suwarsono; Zulfia Memi Mayasari
Forum Geografi Vol 28, No 2 (2014): December 2014
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v28i2.427

Abstract

This research aims to design a tsunami hazard zone with the scenario of tsunami run-up height variation based on land use, slope and distance from the shoreline. The method used in this research is spatial modelling with GIS via Ordinary Kriging interpolation technique. Kriging interpolation method that is the best in this study is shown by Circular Kriging method with good semivariogram and RMSE values which are small compared to other RMSE kriging methods. The results shows that the area affected by the tsunami inundation run-up height, slope and land use. In the run-up to 30 meters, flooded areas are about 3,148.99 hectares or 20.7% of the total area of the city of Bengkulu.
Potensi Bencana Tsunami dan Kesiapsiagaan Masyarakat Menghadapi Bencana Studi Kasus Desa Sumberagung Banyuwangi Jawa Timur S Sunarto; Muh. Aris Marfai
Forum Geografi Vol 26, No 1 (2012): July 2012
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v26i1.5047

Abstract

This research aims to, 1) identify the physical condition and vulnerability due to tsunami at Pancer, Sumberagung Banyuwangi and 2) identify the awareness program done by community to reduce the risk and impact due to tsunami. Field observation and analysis of morphology, topography and physical characteristic of the coastal area of Pancer has been done in this research. Interview with key person and stakeholders has been conducted in order to understand the awareness system and program done by the community. Descriptive analysis has been used to describe the research result. From the topographical point of view, study area consist of lowland and hilly area. Lowland area is dominated by settlement and paddy field, meanwhile the hilly area is mainly for forest and dry farming system. Lowland area is the most vulnerable area for inundation due to tsunami. Coastal community has knowledge on tsunami hazard. Many program has been implemented to strengthen the community capacity and awareness, such as campaign, workshop for evacuation route identification, and evacuation simulation.
Infrared Aerial Photograph Application for Prediction of Runoff Coefficient at Wuryantoro Catchment, Wonogiri Sugiharto Budi Santoso
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.v16i2.605

Abstract

This research was carried out in Wuryantoro Watershed, Wonogiri. The goal of this study is to examine the remote sensing technology capability to obtain the physical characteristics data of watershed in the prediction of runoff coefficient using cook method. The physical characteristics is topography (relief), landcover, water storage, and infiltration. The physical characteristis is interpreted on infrared aerial photography on scale 1 : 10.000 based on element of interpretation i.e. tone, texture, size, shape, pattern, site, and association. The result of the prediction is tested by comparing them with the data of field measurement result. The accuraccy of the result of aerial photo interpretation of physical characteristics of watershed can be obtained as follows 1) the accuracy of the interpretation of landuse 88,5%; 2) the accuracy of slope interpretation 87.67%. The accuracy of prediction of the runoff coeficient 86.9%.
Pemanfaatan Data Iklim untuk Evaluasi Kekeringan dengan Menggunakan Indeks Palmer S Sudibyakto
Forum Geografi Vol 7, No 1 (1993): July 1993
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v7i1.4793

Abstract

Tujuan penelitian ini ialah mengevaluasi tingkat kekeringan di daerah Kedu Selatan, Jawa Tengah dengan menggunakan Indeks Palmer, dengan harapan agar dapat diperoleh gambaran hubungan antara curah hujan dan indeks kekeringan. Data yang digunakan adalah curah hujan dan suhu udara rataan bulanan selama 5 tahun (antara 1972 dan 1976) dan air tanah yang tersedia pada kedua lapisan tanah atas. Data hujan diambil dari 69 stasiun penakar hujan biasa. Data klimatologi diperoleh dari stasiun Sempor dan basil akhir berupa Peta Indeks kekeringan. Hasil perhitungan indeks kekeringan atas data hujan di suatu lokasi menimbulkan indeks yang terlalu basah atau terlalu kering dari keadaan normalnya untuk di suatu tempat. Hubungan dua deret waktu antara hujan dan indeks kekeringan menunjukkan bahwa daerah yang berhutan dengan kondisi tanahnya berupa tanah liat, timbulnya kekeringan mengalami kemunduran setelah beberapa bulan tidak terjadi hujan. Sebagian besar-koefisien korelasi (r) menunjukkan nilai yang lebih besar daripada koefisien korelasi-lag (rL), kecuali di daerah yang mempunyai kawasan hutan cukup luas. Kelayakan Peta Indeks kekeringan dapat dikaitkan dengan penuruan produksi pertanian (padi ladang) dan peristiwa banjir yang pernah terjadi di daerah penelitian.
Utilization of Geographic Information Systems for 1999 Election Results Mapping in Yogyakarta Special Province Endang Saraswati
Forum Geografi Vol 13, No 2 (1999)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v13i2.459

Abstract

Up to present data and information relating to result of general eletion, 1999 still in tabuler for especially in form of figures. Data presentation in form of tables has disadvantage such as not attractive as well as not so effective for communication. Data presentation which is able to adapt the demand is presented in form in map. The aims of this research are 1) to depict data of general election result, in 1999 in form on digital map; 2) to identify factors which influence the result of vote, using map analysis technique of resulted map. The methodology of the research is to use secondary data, mean while the methods for its mapping to apply point symbol, line, and area which appropriated with data characteristics and expected visual perception of the data. The data then is elaborated with aid of Geographic Information System (GIS), to produce map of vote result in general election 1999. To identify what factors that influence voice between map of vote result and map  of population amount, according to education, occupation, and religion.The result of the research show that Partai Demokrasi Indonesia Perjuangan got highest voices, that is 33,73% followed by Partai Amanat Nasional 15,87%, Partai Golongan Karya 13,78%, Partai Kebangkitan Bangsa 13,43%, Partai Persatuan Pembangunan 4,95% and the rest 18,20% for 43 other parties. The voice gathering to occupation and their religion. The voice which are gathered by Partai Demokrasi Indonesia Perjuangan ome from middle to lower group of society which are nasionalist interest, either live in urban area or in rural area. Participant of Partai Amanat Nasional come from modern moslem group and member of Muhammadiyah, result in the voice of Partai Amanat Nasional is high in urban area. The voice which is gathered by Golongan Karya for urban area come from group of birocrate consists of official/ military/ pension, meanwhile form rural area come farmers who enjoy product result of new era regime, especially in agriculture sector. Partai Kebangkitan Bangsa gathered the voicein rural area with Nadhatul Ulama infrastructure and traditional organization which is solid strong under leading of Kyai.
Developing an Extraction Method of Urban Built-Up Area Based on Remote Sensing Imagery Transformation Index Iswari Nur Hidayati; R Suharyadi; Projo Danoedoro
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.v32i1.5907

Abstract

Studying urban areas using remote sensing imagery has become a challenge, both visually and digitally. Supervised classification, one of the digital classification approaches to differentiate between built-up and non-built-up area, used to be leading in digital studies of urban area. Then the next generation uses index transformation for automatic urban data extraction. The extraction of urban built-up land can be automatically done with NDBI although it has one limitation on separating built-up land and bare land. The previous studies provide opportunities for further research to increase the accuracy of the extraction, particularly using index transformation. This study aims to obtain the maximum accuracy of the extraction by merging several indices including NDBI, NDVI, MNDWI, NDWI, and SAVI. The merging of the indices is using four stages: merging of two indices, three indices, four indexes and five indices. Several operations were experimented to merge the indices, either by addition, subtraction, or multiplication. The results show that merging NDBI and MNDWI produce the highest accuracy of 90.30% either by multiplication (overlay) or reduction. Application of SAVI, NDBI, and NDWI also gives a good effect for extracting urban built-up areas and has 85.72% mapping accuracy.

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