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Application of Vector Auto Regression Model for Rainfall-River Discharge Analysis Hartini, Sri; Hadi, Muhammad Pramono; Sudibyakto, Sudibyakto; Poniman, Aris
Forum Geografi Vol 29, No 1 (2015): Forum Geografi
Publisher : Forum Geografi

Show Abstract | Download Original | Original Source | Check in Google Scholar

River discharge quantity is highly depended on rainfall and initial condition of river discharge; hence, the river discharge has auto-correlation relationships. This study used Vector Auto Regression (VAR) model for analysing the relationship between rainfall and river discharge variables. VAR model was selected by considering the nature of the relationship between rainfall and river discharge as well as the types of rainfall and discharge data, which are in form of time series data. This research was conducted by using daily rainfall and river discharge data obtained from three weirs, namely Sojomerto and Juwero, in Kendal Regency and Glapan in Demak Regency, Central Java Province. Result of the causality tests shows significant relationship of both variables, those on the influence of rainfall to river discharge as well as the influence of river discharge to rainfall variables. The significance relationships of river discharge to rainfall indicate that the rainfall in this area has moved downstream. In addition, the form of VAR model could explain the variety of the relationships ranging between 6.4% - 70.1%. These analyses could be improved by using rainfall and river discharge time series data measured in shorter time interval but in longer period.

Penyediaan Data Dasar dalam Pengembangan Kota Poniman, Aris
Forum Geografi Vol 9, No 1 (1995)
Publisher : Forum Geografi

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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.

Providing of Spatial Wetland Information for Supporting National Development Poniman, Aris; Nurwadjedi, Nurwadjedi; Suwahyuono, Suwahyuono
Forum Geografi Vol 20, No 2 (2006): December 2006
Publisher : Universitas Muhammadiyah Surakarta

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The wetland has a strategic role in national development. The potential uses of the wetland are varied such as for agriculture, fisheries, industries, and forestry. The intensive use of the wetland for agricultural development in Sumatera, Kalimantan, Sulawesi, and Papua through transmigration projects has been run since in 1973. Unfortunately, not all the projects were well developed, causing the social, economic, and physical environmental problems. These problems resulted in the negative impact for the life of the transmigration people. For that reason, the community empowerment for the unlucky transmigration people by handling the physical and non physical aspects is very important. This paper will describe the importance of providing spatial data and information biophysical wetland as an initial step in empowering people who live in the wetland resource.

COASTAL MORPHODYNAMIC STUDY USING MULTI TEMPORAL DATA IN BANTEN BAY, INDONESIA Kesumajaya, I Nyoman S; Sutikno, Sutikno; Poniman, Aris; Wijanarto, Antonius
GEOMATIKA Vol 15, No 2 (2009)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

Banten Bay and its surrounding area has been indicated as the coastal areas that serious the environmental problems due to poor management of the natural marine resources that has been going for a long time. This study was carried out focusing on the coastal morphodynamic processes, using the multi temporal satellite images as the main sources of the information. The topographic data of year 1923 has been used for the baseline data for research carried out supported by others thematic data that can be collected for the area of study. The multi temporal images used were aerial photographs at 1:30.000 scale acquired in 1981/1982 and at 1:50.000 scale acquired in 1994; SPOT XS images dated 1990 and 1997 as well as LANDSAT MSS of 1976; LANDSAT TM of 1996 & 2000. Geomorphological map for the study area has been prepared on 1:50,000 scale and the coastal morphodynamic were studied in detail using remote sensing approach completed with the ground-truthing using stratified random sampling techniques. Physical aspect related to coastal changes can be treated throughout vector data gatherred from topographic and the thematic data. The results indicate that there were coastal changes has been found in some where Eastern part of the coast line segment close to Pulau Dua (Dua Islands) as tombolo formation. To the east, Ciujung Delta has been growing with typical bird foot delta. On the other hand, abrasion process took place in Tanjung Pontang (old Ciujung Delta) and also within the coast line segment at Lontar Village. The rate of abration processes within the study area has been 0,0436 mm/yr for the coral islands distributed within shallow coastal sea in the study area, 0,0316 mm/yr along the adesitic volcanic coast line at the western part of the study area, and 0,503mm/yr in soft sediment rock area. Deposition processes were also active in the coastal area between Bojonegoro up to Kamanjungan that is indicated by the bathymetry changes from 2.5 m in the year 1923 to < 1.25 m at present condition in the Karanghantu harbor at a distance of 100 m from the present coast line.Keywords: morphology, dynamics, coastal zone, remote sensing, coastline change.

ASSESSMENT OF THE RICE FIELD SUSTAINABILITY IN JAVA ON BASIS OF REGIONAL SPATIAL USE PLANNING (RTRW) Nurwadjedi, Nurwadjedi; Mulyanto, Budi; Poniman, Aris
GEOMATIKA Vol 16, No 1 (2010)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

The problems of the rice field sustainability in Java as the national rice producer are induced by the rice field land conversion into settlement and industrial areas due to the increase of population. The rice field conversion causes the decrease of both land quantity and quality. As mentioned in Act Number 26/2007 concerning Spatial Use management, the goal of implementing the spatial use management is to achieve the protection of spatial use function and the prevention of the negative impacts of the environment resulted from the spatial use implementation. The objective of this study is to assess the consistency of the governmental policies in implementing the Act Number 26/2007 to achieve the rice field sustainability on the basis of agro-ecological concept. By using the GIS modelbase, the rice field agro-ecological zones proposed as standard rice field areas for the benchmark of the sustainable rice field agriculture management system were synthesized from the spatial database of land system, land cover, area status, agro-climate, irrigation condition, social and culture integrated in the administration boundary layers. The results show that the governmental policies from non-agricultural sector in allocating the area status of the settlement areas as presented at the provincial regional spatial use planning map (RTRW map) have not fully consistent to the regulations as stated in Act Number 26/2007 for protecting the productive rice field function as the national rice producer. The potential loss of the rice production caused by the implementation of the rice field conversion into settlement areas allocated at the productive rice field agro-ecological zones is predicted 3.5 million tons per year.Key words: rice field agro-ecological zone, spatial use management, GIS modelbase, land conversion.ABSTRAKMasalah keberlanjutan lahan sawah di Jawa sebagai lumbung beras nasional dipicu oleh konversi lahan sawah menjadi daerah permukiman dan industri karena peningkatan jumlah penduduk. Konversi lahan sawah mengakibatkan penyusutan dan degradasi lahan sawah. Sebagaimana yang diamanatkan dalam Undang-Undang No.26/2007 tentang Penataan Ruang, tujuan penataan ruang adalah untuk melindungi fungsi penggunaan ruang dan mencegah dampak lingkungan sebagai akibat dari implementasi penggunaan ruang. Tujuan penelitian ini adalah untuk mengkaji konsistensi kebijakan pemerintah sebagai implementasi Undang-Undang No. 26/2007 dalam menjaga keberlanjutan lahan sawah berdasarkan konsep agrokologi. Dengan menggunakan basismodel SIG, zona agroekologi yang diusulkan sebagai acuan untuk penetapan luasan baku lahan sawah disintesa dari basisdata sistem lahan, penutup lahan, status kawasan, agroklimat, kondisi irigasi, dan sosial-budaya yang diintegrasikan dalam layer batas wilayah administrasi. Hasil penelitian menunjukkan bahwa kebijakan pemerintah di sektor non-pertanian dalam pengalokasian status kawasan permukiman ternyata tidak secara penuh konsisten dengan Undang-Undang No.26/2007 dalam menjaga keberlanjutan lahan sawah produkif sebagai lumbung beras nasional. Potensi kerugian proudksi beras dari akibat implementasi kebijakan tersebut diperkirakan mencapai 3,5 juta ton per tahun.Kata Kunci: zona agroekologi lahan sawah, penataan ruang, basismodel SIG, konversi lahan.

DINAMIKA PEMANFAATAN LAHAN BENTANG ALAM GUMUK PASIR PANTAI PARANGTRITIS, KABUPATEN BANTUL M., Fakhruddin; Poniman, Aris; H, Malikusworo
GEOMATIKA Vol 16, No 2 (2010)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

The sand dunesâ range or landscape in Parangtritis beach are not instantly formed instead they are formed over a long period of time to form their distinct and unique physical shapes. On the other hand, the existence of sand dunes is threatened by a number of forces which are potentially damaging to their survival. This research is intended to analyzing land utilization in the area of sand dunes.Keywords: Landuse, landscape, sand dune, coastal.ABSTRAKHamparan atau bentang alam gumuk pasir di Pantai Parangtritis tidak terbentuk secara instan, tetapi dalam kurun waktu yang cukup lama membentuk kenampakan fisik yang menarik dan unik. Disisi lain, keberadaan gumuk pasir menghadapi berbagai tekanan yang berpotensi merusak kelestariannya. Penelitian ini bertujuan menganalisis pemanfaatan lahan di kawasan bentang alam gumuk pasir.Kata Kunci: Penggunaan Lahan, bentanglahan, gumuk pasir, pesisir

Application of Vector Auto Regression Model for Rainfall-River Discharge Analysis Hartini, Sri; Hadi, Muhammad Pramono; Sudibyakto, S; Poniman, Aris
Forum Geografi Vol 29, No 1 (2015): July 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v29i1.786

River discharge quantity is highly depended on rainfall and initial condition of river discharge; hence, the river discharge has auto-correlation relationships. This study used Vector Auto Regression (VAR) model for analysing the relationship between rainfall and river discharge variables. VAR model was selected by considering the nature of the relationship between rainfall and river discharge as well as the types of rainfall and discharge data, which are in form of time series data. This research was conducted by using daily rainfall and river discharge data obtained from three weirs, namely Sojomerto and Juwero, in Kendal Regency and Glapan in Demak Regency, Central Java Province. Result of the causality tests shows significant relationship of both variables, those on the influence of rainfall to river discharge as well as the influence of river discharge to rainfall variables. The significance relationships of river discharge to rainfall indicate that the rainfall in this area has moved downstream. In addition, the form of VAR model could explain the variety of the relationships ranging between 6.4% - 70.1%. These analyses could be improved by using rainfall and river discharge time series data measured in shorter time interval but in longer period.

Providing of Spatial Wetland Information for Supporting National Development Poniman, Aris; Nurwadjedi, Nurwadjedi; Suwahyuono, Suwahyuono
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.v20i2.1812

The wetland has a strategic role in national development. The potential uses of the wetland are varied such as for agriculture, fisheries, industries, and forestry. The intensive use of the wetland for agricultural development in Sumatera, Kalimantan, Sulawesi, and Papua through transmigration projects has been run since in 1973. Unfortunately, not all the projects were well developed, causing the social, economic, and physical environmental problems. These problems resulted in the negative impact for the life of the transmigration people. For that reason, the community empowerment for the unlucky transmigration people by handling the physical and non physical aspects is very important. This paper will describe the importance of providing spatial data and information biophysical wetland as an initial step in empowering people who live in the wetland resource.

Penyediaan Data Dasar dalam Pengembangan Kota Poniman, Aris
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

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.

PEMANFAATAN GIS UNTUK REKONTRUKSI KAWASAN STRATEGIS NASIONAL TROWULAN Subagio, Habib; Poniman, Aris
MAJALAH ILMIAH GLOBE Vol 12, No 2 (2010)
Publisher : Badan Informasi Geospasial

Penelitian ini mengintegrasikan beberapa hasil kegiatan dan penelitian terkait surveiarkeologis di Trowulan dengan GIS. Metode yang digunakan adalah melakukan set up datadata tersebut kedalam format spasial yang memiliki referensi geografis yang sama. Berbagai aplikasi analisis baik 2D maupun 3D dilakukan untuk menunjukkan representasi keadaan Trowulan dari awal penelitian sampai saat ini, yang diharapkan dapat dijadikan sebagai input bagi pengambil kebijakan dalam mengambil langkah kedepan, terkait dengan rencana usulan wilayah Trowulan sebagai Kawasan Strategis Nasional (KSN) ataupun nominasi âworld heritageâ. Upaya perlindungan dan konservasi kawasan ini menjadi prioritas utama untuk mengawal Trowulan dalam rangka penetapan kawasan tersebut sebagai KSN ataupun warisan budaya nasional dan dunia. GIS dapat digunakan sebagai instrumen dalam pengelolaan data dan informasi, sekaligus sistem pemantauan terkait dengan keseluruhan properti arkeologi yang ada di kawasan tersebut.Kata Kunci: Pemetaan, GIS, Kawasan Strategis Nasional, Arkeologi.ABSTRACTThis research integrating several related research activities and results of archaeological survey in Trowulan with GIS. The method used is to set up these data into a spatial format that has the same geographic references. Various applications both 2D and 3D analysis done to show a representation of the initial state Trowulan research to date, which is expected to be used as input for policy makers in taking the next step, is associated with the proposed plan area as a National Strategic Area Trowulan (KSN) or nominee the world heritage. The protection and conservation of this region a top priority in order to escort Trowulan determination as KSN region or national and world cultural heritage. GIS can be used as an instrument in the management of data and information, as well as the overall monitoring system associated with the existing archaeological properties in the area.Key Words: Mapping, GIS, National Strategic Area, Archeology

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