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PEMETAAN POTENSI MATAAIR DI PULAU BALI Rahardjo, Noorhadi
Jurnal Rekayasa Lingkungan Vol 4, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (201.45 KB)

There are three objectives of this research. First, to map springs location, second to know spring characteristic and third to calculat springs potency for domestic use. To reach these aims, springs location were plotted on map base on its coordinate. Springs characteristic were analysed descriptively by spatial analysis base on geologic, geomorphologic and hydrogeologic conditions. Springs potency were calculated base on its discharge, whereas domestic use was determined 60 l/person/day for rural and 120 l/person/day for urban area. The study shows, that springs distribution in Bali Island are not homogeny Springs appearance were controlled by geologic structure as fault and rock contact. The differences of discharge also depend on the structure. Contact between volcanic rock (tuff and lahar) from Buyan-Bratan-Batur Formations with another rock formation in its surrounding result many springs appereance with high discharge. Beside that, orohydrology properties of Agung Mount as strato volcanic result springs belt in a certain elevation and each slope changing. Base on calculation, springs potency in Bali Island are 628.800 m3/month,whereas the domestic use is 9.079.990 m3/month. So, the springs potency is just 6,9% from domestic use in Bali Island.Key words : springs potency, springs distribution, springs characteristic

PEMETAAN POTENSI MATAAIR DI PULAU BALI Rahardjo, Noorhadi
Jurnal Rekayasa Lingkungan Vol 4, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (201.45 KB)

There are three objectives of this research. First, to map springs location, second to know spring characteristic and third to calculat springs potency for domestic use. To reach these aims, springs location were plotted on map base on its coordinate. Springs characteristic were analysed descriptively by spatial analysis base on geologic, geomorphologic and hydrogeologic conditions. Springs potency were calculated base on its discharge, whereas domestic use was determined 60 l/person/day for rural and 120 l/person/day for urban area. The study shows, that springs distribution in Bali Island are not homogeny Springs appearance were controlled by geologic structure as fault and rock contact. The differences of discharge also depend on the structure. Contact between volcanic rock (tuff and lahar) from Buyan-Bratan-Batur Formations with another rock formation in its surrounding result many springs appereance with high discharge. Beside that, orohydrology properties of Agung Mount as strato volcanic result springs belt in a certain elevation and each slope changing. Base on calculation, springs potency in Bali Island are 628.800 m3/month,whereas the domestic use is 9.079.990 m3/month. So, the springs potency is just 6,9% from domestic use in Bali Island.Key words : springs potency, springs distribution, springs characteristic

Kajian Kualitas Lingkungan Permukiman di Daerah Pinggiran Kota Kasus di Desa Ngestiharjo, Yogyakarta Prittaningtyas Ekartaji; Hadi Sabari Yunus; Noorhadi Rahardjo
Majalah Geografi Indonesia Vol 28, No 1 (2014): Majalah Geografi Indonesia
Publisher : Fakultas Geografi, Universitas Gadjah Mada

ABSTRAK Penelitian ini mengkaji kualitas lingkungan permukiman di daerah pinggiran kota khususnya di Desa Nges-tiharjo, Kecamatan Kasihan, Kabupaten Bantul. Tujuan penelitian ini adalah (1) mengkaji sebaran kualitas lingkungan permukiman di Desa Ngestiharjo, (2) mengkaji kondisi sosial ekonomi penduduk di Desa Ngestiharjo, (3) mengkaji hubungan partisipasi penduduk dengan kualitas lingkungan permukiman, dan (4) mengkaji faktor sosial ekonomi, biotik dan abiotik yang berpengaruh terhadap kualitas lingkungan permukiman di Desa Ngestiharjo.Metode penelitian yang digunakan dalam penelitian ini metode penelitian terkait dengan eksistensi populasi adalah metode penelitian sampling, terkait dengan karakteristik obyek penelitian adalah metode survei deskriptif kualitatif, dan terkait dengan cara analisis adalah pendekatan kualitatif dan kuantitatif. Teknik sampling yang digunakan adalah teknik proporsional random sampling. Responden penelitian ini adalah kepala keluarga yang dipilih acak berdasarkan strata dan propor-sional. Teknik analisis data dengan menggunakan skoring dan pembobotan, uji korelasi Spearman, uji regresi ganda dan analisis deskriptif kualitatif dengan menggunakan tabel silang.Hasil penelitian ini adalah (1) pola sebaran kualitas lingkungan permukiman di Desa Ngestiharjo disebabkan karena adanya perbedaan keteraturan bangunan dan per-bedaan kualitas lingkungan rumah; (2) tingkat pendapatan kepala keluarga mempunyai hubungan yang lemah terha-dap kualitas lingkungan permukiman dengan nilai koefisien korelasi 0,270. Hubungan yang lemah tersebut disebabkan kondisi lingkungan permukiman dan kondisi rumah yang baik tidak seluruhnya merupakan hasil investasi pendapatan si kepala keluarga tetapi merupakan hasil warisan dari orang tua si kepala keluarga; (3) tingkat partisipasi kepala kel-uarga mempunyai hubungan negatif dan lemah terhadap kualitas lingkungan permukiman. Nilai koefisien korelasin-ya adalah sebesar -0,207. Kegiatan pengelolaan lingkungan permukiman di Desa Ngestiharjo tidak memperbaiki fak-tor-faktor yang berpengaruh terhadap kualitas lingkungan permukiman; (4) faktor sosial-ekonomi, biotik, dan abiotik yang berpengaruh terhadap kualitas lingkungan permukiman di Desa Ngestiharjo adalah keteraturan bangunan (t = 3,637), tahun sukses pendidikan kepala keluarga (t=3,155), tingkat pendapatan ( t = 2,598), dan persentase vegetasi (t = 1,760). ABSTRACT This research was conducted to study the quality of settlement environment in urban periphery with Desa Ngesti-harjo, Kecamatan Kasihan, Kabupaten Bantul as locus of study. The objectives of this research were (1) to analyze the dis-tribution of environmental quality of the settlements in Desa Ngestiharjo; (2) to analyze the socioeconomic condition of the residents of Desa Ngestiharjo; (3) to analyze the relation between the community participation and environmental quality of the settlements and (4) to analyze the socioeconomic, abiotic, and biotic factors contributing to the enviromental quality of the settlements in Desa Ngestiharjo.The method used in this research that : (1) associates with population is sampling method; (2) associates with objects characteristic is qualitative descriptive survei, and (3) associates with data analysis is the quantitative and qualitative method. Proporsional random sampling employed in this research. The respondents were heads of the household which were stratified and proportionally selected. The data were then analyzed using scoring and weighting, Spearman correlation, multiple liniear regression,and qualitative decriptive analysis using crosstab methods.The results of this research were (1) The distribution of the environmental quality of the settlements was found as result of the differences in building regularity and housing environmental quality; (2) The heads of household had a weak correlation with the quality of settlements, as indicated by the correlation coefficient of 0,270. The weak correlation stemmed from the fact that the good environmental quality of the settlement and the housing were not complete results of the income of the head of households, but was inherited from the predecessors; (3) The heads of household particiption was found to be negatively affected the enviromental quality of the settlements, indicated by the coefficient correlation of -0,207. The management of settlements environment did not improve the factors contributing to the environment quality of settlements; (4) Socioeconomic, abiotic, and biotic factors contributing to environment quality were housing regularity (t = 3,637, educational level of the heads of the households indicated by the years spent in educational institutions (t=3,155), level of income (t = 2,598), and percenta-tion of vegetation coverage (t=1,760).

SEBARAN TIPE PANTAI DAN KARAKTERISTIK LINGKUNGAN DI PANTAI SELATAN JAWA BARAT Noorhadi Rahardjo
Majalah Geografi Indonesia Vol 17, No 2 (2003): Majalah Geografi Indonesia
Publisher : Fakultas Geografi, Universitas Gadjah Mada

ABSTRAK Indonesia merupakan negara kepulauan terbesar di dunia, dengan panjang garis pantai kurang lebih 108.000 Km. Berdasarkan realita tersebut, maka ekosistem pantai merupakan sumberdaya yang polensial bila dikelola dengan optimal. Sebagai upaya optimalisasi, pemerintah melalui kegiatan Marine Resource Evaluation and Planning (MREP) telah menginventarisasi sumberdaya di wilayah pantai untuk 10 wilayah provinsi di Indonesia. Dari hasil inventarisasi tersebut, informasi tipe pantai belum dikaji secara khusus, padahal tipe pantai merupakan salah satu unsur penting untuk pengelolaan kawasan pantai. Penelitian ini bertujuan untuk menyajikan sebaran tipe pantai secara fisik dengan menggunakan peta, dan mendeskripsikan karakterisiik lingkungan pada setiap tipe pantai yang disajikan dalam bentuk tabeL Metode yang digunakan adalah dengan cara interpretasi citra Landsat ETM dan analisis peta geologi untuk membuat peta tipe pantai tent at if, dan kerja lapangan untuk menguji basil interpretasi citra dan analisis peta serta menelusuri karakteristik lingkungan pada setiap unit tipe pantai.Dari hash penelitian dapat diketahui bahwa di wilayah pantai Jawa Barat bagian Selatan, terdapat empal tipe pantai, masing-masing : (a) Pantai gunungapi, (b) Pantai organik, (c) Pantai pengendapan taut, dan (d) Pantai pengendapan darat. Dori keempat pipe pantai tersebut, Pantai Gunungapi (Volcanic Coast) mendominasi seluruh wilayah pantai, kemudian secara berturut-turut diikuti oleh paniai pengendapan darat, dan pantai organik. Bentuk-bentuk pantai cekung (Teluk) tingkai perkembangan wilayahnya relatid lebih maju. bila dibandingkan dengan bentuk-bantuk pantai cembung (Tanjung).

Specifications of Cartographic Symbols for Indonesian Tactile Map Noorhadi Rahardjo; Ika Noor Muslihah M; Candra Sari Djati Kartika
Indonesian Journal of Geography Vol 51, No 1 (2019): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Visual impairment people require a means of information transfer which different from normal people, it needs to be touched or amplified by audio, including maps that apprise them of the objects and events occurring on Earth. Cartographic Sciences have developed tactile maps that offers touchable symbols for supporting blind and partially sighted people in recognizing the spatial distribution of geographical phenomena and their intercorrelation. Creating an informative tactile maps need a specific design of symbol, ancillary information, and map reproduction that meets the need and the capacity of its users. Unfortunately, there has been no international standardization for these map features that could be used as a foundation to build a standardization for our national tactile map. Therefore, this research adopted and modified the designs of tactile symbols published by the National Mapping Council of Australia, the Guidelines for Design of Tactile Graphics by American Printing House, the use of tactile variables by Vasconcellos, the Specifications of Topographic Elements Mapping by Bakosurtanal, and the application of visual variables of Bertin for cartographic mapping. The resultant symbol designs from the modification were applied to develop the tactile maps of Yogyakarta City on swell paper. Then, through interviews with map users (visually impaired people in the city), we evaluated these symbols from two aspects, comprehension of tactile variables and the types of the tactile maps required.

SPESIFIKASI SIMBOL KARTOGRAFIS PADA PETA TAKTUAL UNTUK KAUM TUNA NETRA Noorhadi Rahardjo; Surito Hardoyo
Paedagoria : Jurnal Kajian, Penelitian dan Pengembangan Kependidikan Vol 5, No 2 (2014): September
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/paedagoria.v5i2.91

Abstrak:Tunanetra memerlukan sarana perolehan informasi yang dapat diterjemahkan dengan rabaan atau diperkuat dengan pendengaran, termasuk kebutuhan akan informasi kebumian dan atau lingkungan. Cara perolehan informasi seperti tersebut, kaum tunanetra kesulitan untuk mengetahuisebaran dan hubungan antar informasi. Peta tactual yang dikembangkan dalam ilmu kartografi, dimaksudkan untuk memenuhi kebutuhan tunanetra terhadap representasi fenomena geografis secara keruangan. Dengan Peta taktual, penderita tunanetra dapat membaca atau mengetahui sebaran dan hubungan antar fenomena geografi dengan meraba simbol-simbol yang ada pada peta. Untuk menyusun peta taktual yang baik, simbol, informasi tepi, dan reproduksi peta perlu dirancang sesuai kebutuhan dan kemampuan tunanetra sebagai pengguna. Sayangnya, hingga saat ini ketentuan-ketentuan tersebut belum terstandardisasi secara internasional. Bertitik tolak dari permasalahan tersebut, maka pada makalah ini dicoba menguraikan tentang disain simbol peta taktual yangdiperoleh dari hasil modifikasi dari hasil pemetaan taktual kota oleh National Mapping Council of Australia; Publikasi Panduan Desain Gambar Taktual dari American Printing House; Penggunaan Variabel Taktual yang disusun oleh Vasconcellos; Spesifikasi Pemetaan Unsur Rupabumi dari BAKOSURTANAL; dan Penggunaan Variabel visual yang dikembangkan oleh Bertin Untuk Penyusunan Peta Kartografis. Hasil rancangan simbol peta taktual yang diperoleh dari modifikasi tersebut, selanjutnyadiaplikasikan untuk menyusun peta taktual Kota Yogyakarta dengan media terpilih yaitu Swell Paper, dan selanjutnya dievaluasi dengan cara mewawancarai pengguna peta (tunanetra).Dua aspek yang dievaluasi, yakni (a) jenis peta taktual yang dibutuhkan oleh kaum tunanetra di Yogyakarta, dan (b) tingkat pengenalan kaum tunanetra terhadap variabel taktual.Abstract: Blind people need a means of obtaining information that can be translated by touching or amplified by hearing, including the need for earth and / or environmental information. How to obtain such information, the blind are difficult to know the spread and the relationship between information. A tactual map developed in cartographic science, is intended to meet the needs of the blind to the representation of spatial geographical phenomena. With taktual maps, blind people can read or know the distribution and relationship between geography phenomena by touching the symbols on the map. To construct good tactual maps, symbols, edge information, and map reproduction should be designed to suit the needs and abilities of the visually impaired as users. Unfortunately, to date these provisions have not been standardized internationally. Starting from this problem, this paper attempts to elaborate on the design of the tactual map symbol obtained from the modification of the mapping of city tactual by the National Mapping Council of Australia; Publication of the Tactual Figure Design Guide of the American Printing House; Use of Tactual Variables composed by Vasconcellos; Topographic Material Mapping Specification from BAKOSURTANAL; and the Use of Visual Variables developed by Bertin For the Creation of a Cartographic Map. The result of the tactual map symbol design obtained from the modification was then applied to formulate the tactual map of Yogyakarta City with selected media, Swell Paper, and then evaluated by interviewing the map user (blind) .These two aspects were evaluated, namely (a) the type of tactual map required by the blind in Yogyakarta, and (b) the level of blind people recognition of the tactual variables.

PEMETAAN POTENSI MATAAIR DI PULAU BALI Noorhadi Rahardjo
Jurnal Rekayasa Lingkungan Vol. 4 No. 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v4i2.1853

There are three objectives of this research. First, to map springs location, second to know spring characteristic and third to calculat springs potency for domestic use. To reach these aims, springs location were plotted on map base on its coordinate. Springs characteristic were analysed descriptively by spatial analysis base on geologic, geomorphologic and hydrogeologic conditions. Springs potency were calculated base on its discharge, whereas domestic use was determined 60 l/person/day for rural and 120 l/person/day for urban area. The study shows, that springs distribution in Bali Island are not homogeny Springs appearance were controlled by geologic structure as fault and rock contact. The differences of discharge also depend on the structure. Contact between volcanic rock (tuff and lahar) from Buyan-Bratan-Batur Formations with another rock formation in its surrounding result many springs appereance with high discharge. Beside that, orohydrology properties of Agung Mount as strato volcanic result springs belt in a certain elevation and each slope changing. Base on calculation, springs potency in Bali Island are 628.800 m3/month,whereas the domestic use is 9.079.990 m3/month. So, the springs potency is just 6,9% from domestic use in Bali Island.Key words : springs potency, springs distribution, springs characteristic

Flood Assessment through Integrated-Mixed-Method in the Western Downstream Area of Citanduy River Basin, Pangandaran Regency Syafitri, Dyah Rina; Arysandi, Safira Arum; Purboyo, Alvian Aji; Fitri, Amelia; Febriani, Yenni; Tjahyanityasa, Wanda Fitri; Sari, Nila Puspita; Mar'ath, Sitti Khafifatul; Safinatunnajah, Safinatunnajah; Satyaningrum, Aghnia Candra; Rahardjo, Noorhadi; Sudrajat, Sudrajat; Mardiatno, Djati; Rachmawati, Rini
Jurnal Pendidikan Geografi Gea Vol 24, No 1 (2024)
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/gea.v24i1.60691

Recurring and intensive flooding occurs in the western downstream area of the Citanduy River Basin (including Kalipucang, Padaherang, and Mangunjaya Districts, Pangandaran Regency) and causes massive losses. Land use Changes, fluctuating weather and climate conditions, as well as countermeasures that have not been maximized, have caused losses continuously. This study aims to describe the latest representation of flood vulnerability distribution in the study area using an integrated-mixed-method, includes: 1) AHP weighting based on expert interviews; 2) land use classification by the random forest algorithm; 3) Flood Hazard Map modeling using weighted overlay; and 4) hazard maps validation and historical flood analysis. The flood vulnerability model uses indicators: rainfall, elevation, slopes, distance from the river, and land use. Geographic Information System based on application (ArcGIS) and could (GEE) are the analytical tools in this study, supported by secondary data, such as 1) Sentinel 2A for land use models, 2) DEM for elevation and slope models, 3) buffer models for river distance and 4) CHIRPS for rainfall. The flood hazard with low and very-low levels is so minimal that it is less visible on the map. While the moderate level of flood hazard class counted as 12.6 Ha, mostly located in the eastern part of the study area (Padaherang and Kalipucang sub-districts).The high-level flood hazard class occupied about 2041.17 Ha, spread over built-up land use. The Very-high hazard class is 22652.11 Ha and mostly located in villages directly adjacent to the Citanduy River.

Dampak Pembangunan Bandara Internasional Yogyakarta Terhadap Perubahan Penggunaan Lahan utami, westi; Aji, Kuna; Marini, Marini; Sugiyanto, Catur; Rahardjo, Noorhadi
Jurnal Pembangunan Wilayah dan Kota Vol 19, No 1 (2023): JPWK Volume 19 No. 1 March 2023
Publisher : Universitas Diponegoro, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/pwk.v19i1.37429

Pengadaan tanah skala besar Yogyakarta International Airport (YIA) membawa pengaruh terhadap aspek fisik, lingkungan, sosial, ekonomi maupun budaya. Kajian ini bertujuan melakukan pemetaan perubahan penggunaan lahan yang terjadi akibat pembangunan bandara YIA. Metode penelitian dilakukan secara spasial, penggunaan lahan diperoleh melalui interpretasi citra melalui pendekatan NDVI (Normalized Difference Vegetation Index). Data yang digunakan untuk monitoring pola perubahan penggunaan lahan ialah citra satelit Sentinel-2 Tahun 2015 dan 2019. Hasil kajian menunjukkan perubahan penggunaan lahan di Kecamatan Temon, Pengasih, dan Wates, perubahan tertinggi terjadi pada kebun campur hingga mencapai luasan 910 Ha, sementara perubahan lahan sawah mencapai 289,44 Ha. Tingginya alih fungsi lahan pertanian ini dapat berimplikasi terhadap transformasi matapencaharian penduduk yang sebelumnya menggantungkan hidup pada sektor agraris. Monitoring perubahan penggunaan lahan yang dilakukan berkala harapannya menjadi dasar dalam melakukan pengendalian pertanahan dan pemanfaatan ruang.

Artificial intelligence in land use prediction modeling: a review Utami, Westi; Sugiyanto, Catur; Rahardjo, Noorhadi
IAES International Journal of Artificial Intelligence (IJ-AI) Vol 13, No 3: September 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijai.v13.i3.pp2514-2523

This study aims to review methods of artificial intelligence (AI) in land use modelling. Data were extracted from journals in the Scopus and Google Scholar databases using the preferred reporting items for systematic reviews and meta-analyses (PRISMA) method. The review demonstrates that modelling land use predictions is a complex matter that involves land use maps and driving forces. AI technology can support land use forecasting by interpreting land use data, analyzing drivers, and modeling. However, AI has limitations in terms of broad contextual understanding and algorithmic errors. To anticipate this, it is necessary to select the appropriate image resolution and interpretation method in accordance with digital data segmentation. It is also recommended to use spatial regression methods to determine the driving forces that affect land use. Hybrid models such as multilayer perceptron neural network Markov chain (MLPNN-MC), random forest algorithm (RFA), and cellular automata (CA)-Markov chain (MC) are recommended for modelling. The selection of a model should be based on the data's characteristics and tested for accuracy. The use of AI for land use prediction modelling is expected to provide accurate predictions that can be used as a basis for land use policy.

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