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Analisis Morfometri dan Morfostruktur Lereng Kejadian Longsor di Kecamatan Banjarmangu Kabupaten Banjarnegara Priyono, Kuswaji Dwi; Priyono, P
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.v22i1.4926

Abstract

The aims of this research are: (a) to study and classify the landslide hazard level, and (b) to analysis morphometry and morphostructure slope at occurrence slides in the research area. The sampling method applied in this research was stratified sampling, landform units were applied as strata. The sample within strata was determined according the landslide hazard based factor that caused landslides. Analysed of morphometry and morphostructure conducted in described of landform units. The landslide location was mapped by determining landslide point with Global Position System (GPS), and morphometry slope analysis in three images with Digital Elevation Model (DEM) analysis. The results showed that the degree of landslide hazard in the research area could be classified into 9 units landform with 5 landslide hazard level, from very low until very high. At very high landslide hazard existed occurrence landslides at most, whereas at very low landslide hazard existed occurrence at least. From slope morphometry aspect, the point of the most landslide case is in mountain midle slope (11), lower slope (9), and upper slope (5). Flows type, soil fall, and rockfall all happen in lower slope. Landslide types almost (80%) happen in lower slope, whereas slump type happen in upper, middle, and lower slope. From slope form aspect, 70% landslide cases happen in concave slope position and slope classes 3-5 (>9%). From morphostructure aspect, the research area hasn’t difference because of weathering level and litology structure condition which is relatively similar. Concave and aslant slope condition become the concentration point of surface flow water and under surface which are predicted be the most influence factor that cause landslide.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v20i2.1810

Abstract

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.
Evaluasi Kemampuan Lahan Kecamatan Kedawung Kabupaten Sragen Jawa Tengah Priyono, Kuswaji Dwi; Anna, Alif Noor; Kaeksi, Retno Woro
Forum Geografi Vol 6, No 1 (1992): July 1992
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v6i1.4687

Abstract

Penelitian ini bertujuan untuk mengklasifikasi dan mengevaluasi kelas kemampuan lahan, serta memetakan kelas kemampuan lahan Kecamatan Kedawung, Kabupaten Sragen, Jawa Tengah. Hasil akhir disajikan dalam Peta Kelas Kemampuan Laban skala 1:50.000. Klasifikasi kelas kemampuan lahan didasarkan pada jumlah skor factor-faktor lahan yang menguntungkan dan yang merugikan dari metoda Soepraptohardjo (1962 dengan modifikasi). Faktor-faktor lajan tersebut dinilai pada setiap satuan bentuk lahan. Satuan bentuk lahan diperoleh melalut interpretasi peta topografi, peta geologi dan pengama!an lapangan. Dari basil klasifikasi didapatkan bahwa daerah penelitian seluas 2375 hektar (49.1%) mempunyai kelas kemampuan lahan kelas I 2,400 hektar (49.6%) dengan kelas kemampuan lahan kelas II, dan 62.5 hektar (1.3%) mempunyai kelas kemampuan lahan kelas IV. Kemampuan laban Kelas I menyebar pada bentuk lahan Lembah Fluvial terkikis ringan dan Lereng Kaki Volkan terkikis Ringan, kelas II pada satuan bentuk lahan Lembab Fluvial terkikis sedang dan Lereng Bawah Volkan terkikis ringan, sedangkan Kelas IV terletak pada satuan bentuk lahan Lembab Fluvial terkikis berat. Adapun faktor penghambat pada kemampuan laban kelas II adalah erosi dan lereng, sedangkan pada Kelas IV adalah erosi, lereng, tanah dan batuan. Berdasarkan Faktor penghambat maka lahan ini termasuk dalam Sub-kelas II el dan Sub-kelas IV elsb.
Tipologi Pedogeomorfik Longsorlahan di Pegunungan Menoreh Kabupaten Kulonprogo Daerah Istimewa Yogyakarta Priyono, Kuswaji Dwi; Sunarto, S; Sartohadi, Junun; Sudibyakto, S
Forum Geografi Vol 25, No 1 (2011): July 2011
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v25i1.5035

Abstract

Pedogeomorphology tipology was applied in this research to determine the occurrence of landslide in the Menoreh Mountains, Kulonprogo District, Yogyakarta Special Region. The research aimed to know (1) soil characteristics where landslide events occurred in the research area, (2) characteristic of landslide prone landform in the research area, and (3) typology pedogeomorphic of landslide events in the research area. Pedogeomorphologic approach was represented through the steps of mapping the occurrence of landslides and landform, soil profile pedogenitic analysis and geomorphologic analysis at the point of occurrence of landslide. The results show that landforms characteristic on the occurrence of landslide with slope 16-75%, elevation 210-807 m dpal, weathered zone depth 25-80 cm, and the position of contacts on the opposite slope is flat and parallel. The soil characteristics on the occurrences of landslides have a 20-186 cm soil depts with the content 21,50-95,00% of caolinite clay, and clay content ratio between horion A dan B 0,22-0,91. Pedogeomorphic typology landslides prone classified into 3 levels, namely: low, moderate, and high level of vulnerability. The low level are indicated by the thickness of soil depth 0,60, slope < 25%, elevation 120 cm, caolinite clay content >70%, clay content ratio of A and B horizon < 0,40, slope >60%, elevation >600 m dpal, the depth of weathered zone > 60 cm, and the position of field contact against the slopes is parallel.
Kajian Mineral Lempung pada Kejadian Bencana Longsorlahan di Pegunungan Kulonprogo Daerah Istimewa Yogyakarta Priyono, Kuswaji Dwi
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.v26i1.5050

Abstract

The aims of this study is know the characteristic of the clay mineral types in the landslides occurrence sites, and to examine the relation between the clay and intensity of landslides in Kulonprogo Mountains. Understanding of clay type character will be very important in the landslides disaster mitigation in the area landslides disturbed. This study use survey method, purposive sampling and qualitative analysis. At each landslides location soil sample was taken to determine the clay characteristic. The clay types was analysed by by X-Ray Diffraction. Spatial distribution of landslides based on the landforms unit supported by topographical map, geological map, and Digital Elevation Modell (DEM). The result of this study shows that clay mineral average in this landslides study location: caolin (70,64%), smectit/montmorillonit (15,12%), halite (4,33%), illite (2,99%), quartz (2,91%), cristabolite (2,28%), feldspar (1,34%), and goethite (0,39%). Clay mineral composition show that the interaction over land forming factors which make caolin forming in great quantities possible.
Management of an Underground River to Overcome Water Scarcity in the Gunung Sewu Karst Area, Indonesia Amin, Choirul; Priyono, Priyono; Jauhari, Arif; Priyana, Yuli; Priyono, Kuswaji Dwi; Cholil, Munawar
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.v31i1.4502

Abstract

Since people living in a karst area periodically face a crisis due to a lack of fresh water, it is necessary to re-evaluate the ability to use water resources. An appropriate and effective management is required to use available water resource sustainably. We describe a management process of exploring underground river in karst region as water resources. The activities completed included four phases, namely exploration, pre-lifting activities, the water lifting and post-lifting activities. The exploration phase included speleological surveys and data collection for the cave mouth using remote sensing instrument. The pre-lifting was done to prepare various requirements before the lifting process was completed. The water lifting phase consisted of the construction of an underground river dam, the installation of submersible pumps, the construction of reservoirs and the installation of piping to connect to the public hydrant. The post-lifting phase was mainly conducted to organise water distribution evenly. This management model was evidenced to successfully overcome drought in Pucung village by providing fresh water to the local community. Moreover, this model promoted residents’ cost savings by reducing their expenses for buying water from IDR 50,000/m3 to IDR 3,500/m3 (1,300 percent).
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 : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v12i1.481

Abstract

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 – 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 – 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 : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v10i2.504

Abstract

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 up  to the present it has a tendency of different land  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, to  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.
Analysis of Susceptance Storey Level Damage of Coral Reefs in Territorial Water of Archipelago in Karimunjawa by Using Geographical Information System Jumadi, J; Priyono, Kuswaji Dwi
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.v19i1.4568

Abstract

This research aim to determine susceptance storey level damage of coral reefs in Territorial Water of Archipelago of Karimunjawa. Method which used in this research is special data analysis which in the form of data of sekunder by using Geographical Information System. Pursuant to analysis known that research area there are six especial stressor which menace coral reefs for example: Port, Airport, Center Dive, Coastal Wisata, Resident, and Appliance Catch. Pursuant to spasial analysis which have can be determined that equal to 69.50% from entire coral reefs research area in a condition do not susceptance, namely there are in territorial water region of Island: Kembar, Parang, Kumbang, Katang, Nyamuk, Krakal Besar, Krakal Kecil, Geleang, Burung, Bengkoang, Menyawakan, Cemara Besar, Cemara Kecil, Sintok, Gundul, Cendikian, Genting, Seruni, and Sambangan. As for the rest equal to 30.50% enough natural rentan of damage, there are at territorial water of islands owning high resident activity storry level, namely around in Island: Kemujan, Karimunjawa, Menjangan Besar, and Menjangan Kecil.
Feasibility Study of Padarangin Cave Slogohimo Wonogiri for Eco-Tourism Priyono, Kuswaji Dwi
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.v17i2.537

Abstract

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.  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 – 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. 
Co-Authors - Priyono ., Muhtadi A.A. Ketut Agung Cahyawan W Adinda Putri Andayani Agus Anggoro Sigit Agus Triyono Agus Ulinuha Aktaviani, Hariza Afia Alif Noor Anna Alpha Febela Priyatmono Ambarwati Ambarwati, A Arif Jauhari Arif Jauhari Arif Jauhari Arif Rohman Audi, Fresilia Bayu Fikri Hanafi Choirul Amin Chusniatun Chusniatun Chusniatun Chusniatun Dahroni Dahroni Dahroni Dahroni, Dahroni Damayanti, Elok Danang Nugroho Danardono Danardono Danardono, Danardono Dewi Novita Sari Djaka Marwasta Dwi Linna Suswardany Efri Roziaty Fayiz Anvanca Mubarok Fikriyah, Vidya N. Gabriel Temidayo Adekunle Gayuh Aji Prasetyaningtiyas Hamim Zaky Hadibasyir Herry Purnama Ihwan Susila indah marlina ardianti Indrawati Indrawati Indrawati Indrawati J Jumadi Jumadi, J Junun Sartohadi Kamila Rahma, Tara Kiat, Umar El Izzudin Kun Harismah Listyana Ardhi Rachmawati Lotfata, Aynaz M. Musyiyam M. Musyiyam, M. Maisy Putri Lestari Masruroh, Heni Muhammad Arif Syaifudin Muhammad Eryan Anindyaputra Muhammad Najib Azhom Muhtadi Muhtadi Muhtadi Muhtadi Munawar Cholil Nawaz, Muhammad Nilawan Apriani Nirma Lila Anggani Nurhasan Nurhasan Nurhasan Nurhasan, Nurhasan Olalekan Akeem Alausa Oluwayemisi Shade Adaradoun Ongky Fernanda P Priyono, P Priyono Priyono Priyono Priyono Priyono Priyono Priyono Qomarun Qomarun Restu Dagi Utami Retno Woro Kaeksi Retno Woro Kaeksi Retno Woro Kaeksi, Retno Woro Rohman Hakim, Rohman Rois Fatoni Rusdin Rauf S Sudibyakto S Suharjo S Sunarto Sartono Putro Sattar, Farha Siti Azizah Susilawati Sudibyakto, S Sugiharto Budi Santoso Sugiharto Budi Santoso, Sugiharto Budi Suharjo Suharjo Suharjo Suharjo Sunarhadi, M. Amin Sunarto, S Suranto Suranto Teresita Oktavia Rosari Tjipto Subadi Tomi Yoga Wasiso Totok Budi Santosa Totok Budi Santosa, Totok Budi Ulayya Almast Nabila Wahyu Budiati Wibowo, Afif Ari Wibowo, Arif Ari Wijaya, Sri Rasa Nugra Santana Wiryatmoko, Jarot Wisnu Setiawan Yuli Priyana Yunita Surastuti