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INDONESIA
JURNAL ILMIAH GEOMATIKA
Published by Badan Informasi Geospasial
ISSN : 08542759     EISSN : 25022180     DOI : -
Core Subject : Science, Education,
Earth & Planetary Sciences Mathematics
Geomatika (can be called Jurnal Ilmiah Geomatika-JIG) is a peer-reviewed journal published by Geospatial Information Agency (Badan Informasi Geospasial-BIG). All papers are peer-reviewed by at least two experts before accepted for publication. Geomatika will publish in two times issues: Mei and November.
Arjuna Subject : -
Articles 9 Documents
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Search results for , issue " Vol 15, No 2 (2009)" : 9 Documents clear
APLIKASI GEOMEDIC MAPPING UNTUK MENGETAHUI HUBUNGAN ANTARA FAKTOR LINGKUNGAN DENGAN ANGKA KEJADIAN PENYAKIT DBD DI KECAMATAN PURWOKERTO SELATAN Pranasetia, Ardi Nugraha; Riadi, Bambang
GEOMATIKA Vol 15, No 2 (2009)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (477.47 KB) | DOI: 10.24895/JIG.2009.15-2.247

Abstract

South Purwokerto subdistrict, has the highest of DHF case in Banyumas district, the total number of DHF cases was 37 cases in 2007. However, environmental factor related to the DHF incidence have not been identified. This research aimed to analyses spatial distribution of environmental factor influenced the incident of DHF in South Purwokerto subdistrict. The research was descriptive survey study, the population was all DHF cases identified over the periode of January to November 2008. All cases were include as the research sample. The GPS was used to obtain coordinate data of respondent house. Data were analyzed using topographic map, GIS equipment overlay and buffering were done during data analyses in map. The result showed that were 5 zone that have high risk for DHF incidence. DHF incidences were related to population density and rainfall.Keywords: Dengue Hemorrhagic Fever, GIS, spatial analysisABSTRAKKecamatan Purwokerto Selatan, memiliki kasus DBD tertinggi di Kabupaten Banyumas dengan seluruh kasus DBD (37 kasus) di Tahun 2007. Faktor-faktor lingkungan yang mempengaruhi kejadian DBDbelum teridentifikasi. Penelitian ini bertujuan untuk mengetahui distribusi spasial factor-faktor lingkungan yang mempengaruhi kejadian DBD di Kecamatan Purwokerto Selatan.Penelitian ini menggunakan metode survey diskriptif, kasus DBD diidentifikasi dari rekam medis periode Januari sampai dengan November 2008. Semua kasus didalamnya sebagai sample dalam penelitian ini. Alat GPS digunakan sebagai penanda titik koordinat rumah penderita. Data diolah dengan menggunakan bantuan peta topografi digital dengan metode analisis overlay dan buffering. Berdasarkan analisis diperoleh 5 (lima) area rawan DBD yang membentuk pola distribusi spasial pada area padat penduduk, kepadatan penduduk dan curah hujan mempengaruhi kejadian DBD.Kata Kunci: Dengue Hemorrhagic Fever, SIG, analisa spasial
PEMANTAUAN LAHAN SAWAH MENGGUNAKAN CITRA ALOS AVNIR-2 Tjahjono, Boedi; Syafril, Aufa H. A.; Panuju, Dyah R.; Kasno, Antonius; Trisasongko, Bambang H.; Heidina, Febria
GEOMATIKA Vol 15, No 2 (2009)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (730.438 KB) | DOI: 10.24895/JIG.2009.15-2.252

Abstract

Rice production has been one of important issues in food sufficiency and increasingly gains more attention to the government. Suitable monitoring scheme is then required to ensure proper data analysis. Remote sensing offers an efficient way to acquire such data, allowing rapid assessment on agricultural system. Many advances on sensor technology have been witnessed. Nonetheless, each sensor has to be evaluated for a specific task such as monitoring various stages in rice production. This paper discusses the performance of AVNIR-2 sensor combined with two statistical tree algorithms. Interestingly, the result shows the outstanding performance of the third band of the sensor. We obtained overall accuracy around 90%. The research indicates the applicability of sensors with limited bands coupled with suitable algorithms.Keywords: ALOS, AVNIR-2, rice , CRUISE, QUEST.ABSTRAKDalam menyusun kebijakan pemerintah yang terkait masalah swasembada pangan, data produksi pangan memegang peranan yang sangat penting. Selama proses produksi, mekanisme pemantauan sangat diperlukan, terutama menggunakan teknologi penginderaan jauh. Berbagai kemajuan dalam bidang sensor telah menunjang beragam aplikasi praktis seperti pemantauan padi. Namun demikian, berbagai percobaan masih relevan untuk dilakukan, mengingat sensitivitas suatu sensor masih perlu diuji dalam berbagai wilayah. Makalah ini mengkaji keragaan sensor pasif AVNIR-2 dalam memantau berbagai fase pertumbuhan padi, memanfaatkan dua algoritma pohon keputusan. Hasil yang diperoleh menunjukkan kinerja yang baik dari sensor tersebut, terutama pada kanal 3 dengan tingkat akurasi sekitar 90%. Hal tersebut mengindikasikan bahwa dengan pemanfaatan mekanisme analisis yang tepat, sensor dengan kanal terbatas masih dapat dimanfaatkan untuk tujuan yang spesifik.Kata kunci: ALOS, AVNIR-2, padi, CRUISE, QUEST.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (722.134 KB) | DOI: 10.24895/JIG.2009.15-2.248

Abstract

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.
POLA SPASIAL KARAKTERISTIK PANTAI DI TELUK BUNGUS, KOTA PADANG Kusumah, Yulius G; Salim, H.W.L.
GEOMATIKA Vol 15, No 2 (2009)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (654.143 KB) | DOI: 10.24895/JIG.2009.15-2.253

Abstract

Bungus Bay has potential natural resources such as white and moderately sloped sandy beach, from north to south with strategic position near the capital of West Sumatra Province. The study aims to define coastal characteristic using GIS technique. The methods used in this study is spatial analysis using GIS. The result shows that coastal characteristic at Bungus Bay area can be divided into four types, these are: (1) sandy beach with area of 76,26 hectare, (2) rocky beach with area of 4,84 hectare, (3) mangrove beach with area of 19,10 hectare and (4) cliff beach with area of 32,98 hectare.Keywords: Geographic Information System (GIS), coastal characteristic, Bungus Bay.ABSTRAKTeluk Bungus memiliki sumberdaya alam yang sangat potensial dengan pantainya yang landai dan berpasir putih, membujur dari utara ke selatan dan posisinya sangat strategis dekat dengan ibukota provinsi Sumatera Barat. Penelitian ini bertujuan untuk menentukan karakteristik pantai dengan menggunakan SIG. Metode yang digunakan dalam penelitian ini adalah metode analisis spasial. Berdasarkan hasil analisis secara spasial, diperoleh bahwa untuk karakteristik pantai pada daerah penelitian dapat dibagi menjadi empat tipe, yaitu: (1) pantai berpasir dengan areal seluas 76,26 hektar, (2) pantai berkerakal dengan areal seluas 4,84 hektar, (3) pantai berbakau dengan areal seluas 19,10 hektar dan (4) pantai bertebing dengan areal seluas 32,98 hektar.Kata kunci: Sistem Informasi Geografis (SIG), karakteristik pantai, Teluk Bungus.
ESTIMASI KALENDER BUDIDAYA RUMPUT LAUT MENGGUNAKAN DATA PREDIKSI PASUT DI KAWASAN TERUMBU KARANG KEPULAUAN SERIBU BAGIAN SELATAN Sunarto, Kris
GEOMATIKA Vol 15, No 2 (2009)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (558.195 KB) | DOI: 10.24895/JIG.2009.15-2.249

Abstract

Commonly fishermen have other task as farmer to plant seaweed or algae. They prefer to grow algae in coralreef basin or “goba”, with reasons for more secure against strong waves, current and predator. Although, they often experience harvest failure, they do not realize that planting seaweed in the goba also have a big risk, especially when the sequence occurred konda. Konda is a condition where the water in the stagnant condition. If the period of konda higher than as usual, so that can lead the water quality is worse to the quality very decadent. Seaweed is the type of algae that is very sensitive to the changes in water quality areas. Konda period can not be anyone to guess and when will happen, except with taking calculation of the previous year, which is then made predictions for some years to come. The results predicted and analyzed at the going konda and the konda the occurrence of the berentetan. The results of the analysis is the basic information through the process after the analysis phase estimation can be made seaweed cultivation, called so that the planting calendar. Calendar of seaweed planting is very important to set the exact or fix for cultivation time, as well as planting sesion, the period of growth, until the harvest. Planting calendar can also be used by the entrepreneur or capitalist seeks and stability in order to avoid losses due to failed harvests.Keywords: Calendar of the planting, Seaweed cultivation.ABSTRAKPada umumnya para nelayan sebagai petani rumput laut menanam rumput laut atau alga lebih memilih lokasi di dalam suatu goba pada terumbu karang, dengan alasan lebih aman terhadap ombak, arus deras maupun predator. Walaupun sering mengalami gagal panen, mereka tidak jera dan kurang menyadari bahwa penanaman rumput laut di dalam goba juga punya resiko. Masa konda merupakan masa resiko tinggi dalam berbudidaya rumput laut, karena kualitas air laut sangat merosot. Kemerosotan tersebut berdampak pada gangguan pertumbuhan rumput laut, khususnya jenis alga yang sangat peka terhadap perubahan kualitas wilayah perairan. Masa konda tidak dapat sembarangan ditebak kapan akan terjadi. Dengan mengolah data pasang surut antara masa konda dengan yang bukan konda dapat diidentifikasi dan diklasifikasi, sehingga dapat dibuat kalender tanam untuk pembudidayaan rumput laut. Tujuan penelitian adalah untuk memperoleh informasi penting tenang jadwal pembudidayaan rumput laut yang dituangkan ke dalam bentuk kalender tanam dengan menggunakan analisis data prediksi pasang surut, untuk mendapatkan tahapan pembudidayaan.Kata kunci: Kalender tanam, budidaya Rumput laut.
VARIASI NILAI INDEKS VEGETASI MODIS PADA SIKLUS PERTUMBUHAN PADI Panuju, Dyah R.; Heidina, Febria; Trisasongko, Bambang H.; Tjahjono, Boedi; Kasno, A; Syafril, H.A.
GEOMATIKA Vol 15, No 2 (2009)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24895/JIG.2009.15-2.254

Abstract

Remote sensing technology has been employed extensively for food crops mapping and monitoring. Despite its widespread utilization, analyses have been limited to single set of data. Rice monitoring, ideally, requires time series data and therefore needs high revisit satellite configuration. Nonetheless, very limited research has been dedicated to time series data. This paper presents a study on the use of MODIS time series data for understanding various stages of rice growth in Subang Regency. Two widely-recognized vegetation indices were compared, namely Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI). It is shown that 8-day temporal compositing scheme was unable to provide a proper dataset for this application. This suggests that detailed rice growth could be monitored solely in dry season.Keywords: MODIS, paddy phenology, NDVI, EVI.ABSTRAKPerkembangan teknologi penginderaan jauh telah dimanfaatkan dalam berbagai bidang, termasuk diantaranya bidang pertanian pangan. Namun demikian, fokus utama pemanfaatan masih terbatas pada penggunaan data akuisisi tunggal. Aplikasi pemantauan tanaman pangan, terutama padi, yang memiliki siklus pertumbuhan sangat cepat sangat membutuhkan konfigurasi deret waktu. Telaah literatur menunjukkan bahwa analisis deret waktu sangat terbatas disajikan. Makalah ini menyajikan analisis data serial untuk memantau berbagai fase pertumbuhan padi di Kabupaten Subang memanfaatkan data MODIS yang tersedia secara gratis. Dua indeks kehijauan yaitu Normalized Difference Vegetation Index (NDVI) dan Enhanced Vegetation Index (EVI) dibandingkan dalam kajian ini. Makalah ini menunjukkan indikasi bahwa citra komposit multitemporal 8 hari belum mampu menyediakan data untuk tujuan pemantauan pertumbuhan padi. Dengan demikian, analisis data hanya dapat dimungkinkan pada musim kemarau.
IDENTIFIKASI FAKTOR-FAKTOR PENGARUH FRAGMENTASI LAHAN PERTANIAN Suprajaka, Suprajaka
GEOMATIKA Vol 15, No 2 (2009)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1164.618 KB) | DOI: 10.24895/JIG.2009.15-2.250

Abstract

Rice fields or ponds are one form of "Cultural Landscape" or in terms of the Ramsar Convention as "Artificial Wetland" which has become a form of ecosystem. These ecosystems are increasingly hard pressed due to land conversion. Conversion of agricultural land in general occur in fertile agricultural land and irrigation channels have a good technical converted to residential, industrial and infrastructure. This condition will continue if the government policy to maintain the productive land as a place for the national food production becomes a serious problem. In addition the extent of wetland ecosystems for only 21% of Indonesia land area will be disrupted ecological functions. Therefore, research is needed to study the development of the wetland ecosystem fragmentation in Indonesia, through the development framework of analysis based multi-temporal satellite imagery. Therefore, researchers conducted a study of residential development on ecosystems "Cultural Landscape" with a case study area of Sidoarjo, East Java Province and Kabupaten Serang, Banten Province. This study covers the techniques of spatial analysis, integrated with geographic information system that can give a picture of the level and pattern of farmland conversion in the period of the last two decades between 1985-2005. At this stage of research more emphasis on spatial data analysis has been available which AMS data, JOG, RBI94, and Land Cover Map 2003. In this study also analyzes the factors that influence the process of land fragmentation on agricultural buffer descriptive analytic study.Key words: Conversion of Land, and Land Fragmengatsi Agricultural Buffer.ABSTRAKSawah atau tambak merupakan salah satu bentuk “Cultural Landscape” atau dalam istilah konvensi Ramsar sebagai “Artificial Wetland” yang telah menjadi suatu bentuk ekosistem. Ekosistem ini sudah semakin terdesak akibat konversi lahan. Konversi lahan pertanian pada umumnya terjadi di lahan pertanian subur dan memiliki saluran irigasi teknis yang baik dirubah menjadi permukiman, industri dan infrastruktur. Kondisi ini apabila terus berlangsung maka kebijakan pemerintah untuk mempertahankan lahan produktif sebagai tempat untuk produksi pangan nasional menjadi masalah yang serius. Selain itu ekosistem lahan basah luasnya hanya sebesar 21 % dari luas daratan Indonesia akan terganggu fungsi ekologisnya. Oleh karena itu diperlukan pengembangan penelitian untuk mempelajari tingkat fragmentasi ekosistem lahan basah di Indonesia, melalui pengembangan framework berbasis analisis citra satelit multi temporal. Oleh karena itu, peneliti melakukan kajian tentang perkembangan permukiman pada ekosistem “Cultural Landscape” dengan studi kasus kawasan Sidoarjo, Provinsi Jawa Timur dan Kabupaten Serang, Provinsi Banten. Kajian ini meliputi teknik-teknik analisis spasial yang terintegrasi dengan sistem informasi geografis yang dapat memberikan gambaran mengenai tingkat dan pola konversi lahan pertanian pada periode dua dasawarsa terakhir yaitu antara tahun 1985-2005. Pada tahap ini penelitian lebih ditekankan pada analisis data spasial yang telah tersedia yaitu data AMS, JOG, RBI94, dan Peta Penutup Lahan tahun 2003. Dalam penelitian ini juga melakukan analisis faktor-faktor yang mempengaruhi proses fragmentasi lahan penyangga pertanian berdasarkan kajian deskriptif analitik.Kata kuci: Konversi Lahan, Fragmengatsi dan Lahan Penyangga Pertanian.
APLIKASI DATA INDERAJA MULTI SPEKTRAL UNTUK ESTIMASI KONDISI PERAIRAN DAN HASIL TANGKAPAN IKAN PELAGIS DI SELATAN JAWA BARAT Fitriah, Nurlaila; Nahib, Irmadi
GEOMATIKA Vol 15, No 2 (2009)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1189.754 KB) | DOI: 10.24895/geomatika.v15i2.246

Abstract

Lokasi penelitian terletak di perairan selatan Jawa bagian barat yaitu pada koordinat: 104° BT-107° BT dan 5° LS - 9° LS dengan wilayah kajian pada koordinat 104.4° BT - 106.5° BT dan 6.8° LS -7.8° LS. Citra yang digunakan adalah citra Aqua MODIS level 3. Algoritma yang digunakan untuk estimasi konsentrasi klorofil-a adalah OC3M. Analisis temporal klorofil-a dan SPL dilakukan dengan metode deret waktu. Untuk melihat hubungan antara klorofil-a dan SPL (suhu permukaan laut) dengan hasil tangkapan dilakukan analisis secara deskriptif dan regresi linier sederhana. Hasil penelitian menunjukkan: Rata-rata SPL tahun 2002-2007 berkisar antara 25°C – 31°C. SPL yang dominan pada wilayah penelitian adalah 29°C - 30°C. Pada Agustus dan September 2006 terjadi IODM, dimana SPL lebih dingin dari biasanya. Secara umum kisaran klorofil-a di wilayah penelitian sebesar 0.1434 mg/m3-1.3689 mg/m3. Kisaran yang dominan pada wilayah penelitian antara 0.4 mg/m3-1.0 mg/m3. Spektrum densitas energi klorofil-a menunjukkan adanya fluktuasi antar tahunan dengan periode 30 dan 20 bulan. Selain itu, fluktuasi tahunan klorofil-a terjadi pada periode 15, 12, dan 10 bulan. Untuk SPL, nilai densitas energi menunjukkan fluktuasi antar tahunan dan tahunan. Periode antar tahunan yang terjadi adalah 30, dan 20 bulan, sedangkan periode tahunan yang terjadi adalah 15, 12, dan 10 bulan.Kata Kunci: Multispektral, Aqua Modis, Klorofil-a, suhu permukaan laut phitoplantonABSTRACTLocation of research is located in the southern waters of west Java on the coordinates: 104-107° East and 5-9° South, and the study area coordinates 104.4 -106.5° East and 6.8-7.8° South. Image used is the image of Aqua MODIS level 3. Algorithm that is used to estimate concentration-chlorophyll is a OC3M. Temporal Analysis chlorophyll - SST (sea surface temperature) and a method carried out with the progression of time. To see the relationship between chlorophyll - SST and a catch made with the results of the analysis is descriptive and regression linier simple. Results of research shows: Average SST years 2002-2007 ranged between 25°C - 31°C. SST at the dominant area of research is 29°C - 30°C. In August and September 2006 occurred IODM, where SPL more cold than usual. In general, the range-a chlorophyll research in the area of 0.1434 mg/m3-1.3689 mg/m3. Dominant in the range of research areas between 0.4 mg/m3 - 1.0 mg/m3. Energy density spectrum chlorophyll-a show of inter-annual fluctuations with periods 30 and 20 months. In addition, chlorophyll-annual fluctuations occurred in a period of 15, 12, and 10 months. For SST, the value of the energy density shows inter-annual fluctuations and annual. Inter-annual period is going 30, and 20 months, while the annual period is going 15, 12, and 10 months.Keywords: Multispectral, Aqua Modis, Chlorophyll-a, Sea Surface Temperature, Phytoplanton.
KAJIAN DASAR DAMPAK PERUBAHAN IKLIM TERHADAP SEKTOR PERTANIAN DI PROVINSI BENGKULU: ANALISA PERUBAHAN CURAH HUJAN DAN SEA LEVEL RISE Widiyono, Heru
GEOMATIKA Vol 15, No 2 (2009)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1197.018 KB) | DOI: 10.24895/JIG.2009.15-2.251

Abstract

The climate change has occurred in the Bengkulu Province with the increasing of rainfall in December since the last two decades. On the contrary, total precipitation in June is getting lower and drops more than 50mm/month. On the other hand, Sea level is increasing by 0.6cm/year and will reaches to 60cm in 2100. Furthermore, the extreme wave is more frequent due to the strengthening of global warming. High wave and sea level rise increase the risk of flooding, erosion, decreasing of fishing productivity and inhibit the goods flow among the islands that use the marine transportation.Keywords: climate change, Bengkulu, rainfall, sea levelABSTRAKPerubahan iklim sudah terjadi di Provinsi Bengkulu, dengan makin tingginya curah hujan di bulan Desember sejak dua dekade terakhir. Sebaliknya curah hujan pada bulan Juni semakin rendah dengan penurunan lebih dari 50mm/bulan. Di sisi lain, tinggi muka laut (TML) mengalami kenaikan sebesar 0.6cm/tahun, dan mencapai 60cm sampai tahun 2100. Selanjutnya, tinggi gelombang ekstrim akan mengalami kenaikan seiring dengan intensifnya pemanasan global. Hal ini akan mempertinggi risiko banjir dan erosi, serta penurunan produksi nelayan dan menghambat arus barang antar pulau yang menggunakan sarana perhubungan laut.Kata kunci: perubahan iklim, Bengkulu, curah hujan, sea level

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