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All Journal JURNAL AIR INDONESIA JURNAL TEKNOLOGI LINGKUNGAN Jurnal Sains & Teknologi Modifikasi Cuaca Jurnal Teknologi Lingkungan

Sutopo Purwo Nugroho

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Author-ID : 333493

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Education Engineering Environmental Science

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ANALISIS HIDROGRAF SATUAN SINTETIK METODE SNYDER, CLARK DAN SCS DENGAN MENGGUNAKAN MODEL HEC-1 DI DAS CILIWUNG HULU Sutopo Purwo Nugroho
Jurnal Sains & Teknologi Modifikasi Cuaca Vol. 2 No. 1 (2001): June 2001
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jstmc.v2i1.2147

Analisis hidrograf satuan sintetik berdasarkan metode Snyder, Clark, dan SCS pada suatu DAS dapat dilakukan dengan menggunakan model HEC-1. Model HEC-1 merupakan paket model hidrologi yang cukup terkenal yang dapat digunakan untuk mensimulasi aliran permukaan sebagai respon hujan tunggal yang terjadi pada suatu DAS. Metode SCS mempunyai Qp, Tp dan tebal DRO yang lebih besar daripada pengamatan. Sedangkan metode Snyder dan Clark, nilai Qp lebih kecil dibandingkan dengan Qp pengamatan, namun waktu puncaknya lebih besar.Synthetic unit hydrographs analysis of a watershed based on Snyder, Clark, and SCS methods can be done by utilizing HEC-1 model. The HEC-1 model is a package of hydrological model that has been adequate known to simulate runoff as a response of a rainfall event on a watershed. SCS method predicts Qp, Tp and DRO depth higher than the observations. Meanwhile, Snyder and Clark methods predict smaller Qp, but higher time of peak.

PREDIKSI KEKERINGAN PENGARUH EL NINO TAHUN 2001-2002 DAN PEMANFAATAN TEKNOLOGI MODIFIKASI CUACA UNTUK MENGANTISIPASINYA Sutopo Purwo Nugroho
Jurnal Sains & Teknologi Modifikasi Cuaca Vol. 2 No. 1 (2001): June 2001
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jstmc.v2i1.2149

El Nino diperkirakan akan terjadi kembali pada akhir tahun 2001 hingga 2002. Akibatnya beberapa wilayah Indonesia akan mengalami kekeringan sehingga kondisi air semakin berkurang ketersediaannya. Adanya kekeringan dapat menyebabkan penurunan produksi pertanian, kebakaran hutan, krisis air, dan penurunan pendapatan petani di beberapa wilayah serta timbulnya masalah-masalah sosial dan ekonomi di masyarakat. Untuk mengatasi kekeringan dan menambah ketersediaan air, maka dapat diterapkan teknologi hujan buatan. Teknologi hujan buatan dapat meningkatkan curah hujan dan debit aliran sehingga cadangan air bertambah.El Nino is predicted to return at the end of 2001 or later. As a consequence some areas in Indonesia might experience drought that will jeopardize the water availability. This drought could cause declining agriculture production, forest fire, water crisis, and other economic social costs. Rain enhancement technology can be applied to overcome this water storage. The rain enhancement technology could enhance rainfall and increaserunoff, therefore, water availability will increase.

EVALUASI PENINGKATAN HASIL CURAH HUJAN DAN KETERSEDIAAN AIR AKIBAT KEGIATAN MODIFIKASI CUACA DI DAS CITARUM Sutopo Purwo Nugroho; Sunu Tikno
Jurnal Sains & Teknologi Modifikasi Cuaca Vol. 3 No. 1 (2002): June 2002
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jstmc.v3i1.2162

Defisitnya air di ketiga waduk di DAS Citarum menyebabkan teknologi modifikasi cuacasegera diterapkan untuk meningkatkan ketersediaan air. Penerapan teknologi modifikasicuaca telah menyebabkan meningkatnya curah hujan dan aliran di DAS Citarum. Hasil yang dicapai selama kegiatan adalah rata-rata aliran Sungai Citarum sebesar 326,81 m/detik dan volume air yang tertampung di ketiga waduk sebesar 559,06 juta m3. Adanya tambahan air tersebut maka untuk kebutuhan air pada musim tanam gadu 2001 di daerah irigasi Jatiluhur cukup tersedia, bahkan masih terdapat cadangan air sebesar 1.440,26 juta m3. Namun demikian jika dibandingkan dengan pola rencana untuk kebutuhan air musim tanam rendeng 2001/2002 dan musim tanam gadu 2002 masih terdapat kekurangan air sebesar 152,7 juta m3.Weather modification technology was applied in Citarum for fullfil water in Citarum cascade dam (Saguling, Cirata dan Juanda) due to decreasing water storage. Weather modification technology has been increase the rainfall and inflow of Citarum Watershed. The average inflow of Citarum River was 326,81 m3/sec and nett volume storage in the dams were 559,06 million m3 . Increassing water can be used to irrigation water supply in Pantura agriculture area during dry seasson. However, water irrigation requirement in wet and dry seasson 2001/2002 stil deficit 152.7 million m3.

EVALUASI DAN ANALISIS CURAH HUJAN SEBAGAI FAKTOR PENYEBAB BENCANA BANJIR JAKARTA Sutopo Purwo Nugroho
Jurnal Sains & Teknologi Modifikasi Cuaca Vol. 3 No. 2 (2002): December 2002
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jstmc.v3i2.2164

Banjir yang terjadi di Jakarta dan daerah sekitarnya pada tanggal 27 Januari hingga 1Februari 2002 disebabkan oleh besarnya curah hujan dan pengaruh dari sungai yangterdapat di daerah aliran sungai di dalamnya. Curah hujan yang terjadi sejak tanggal26 Januari hingga 1 Februari 2002 menyebabkan meluapnya sungai dan salurandrainase. Banjir yang terjadi menyebar hingga menggenangi beberapa dae rah diJakarta. Tinggi genangan mencapai 5 meter. Banjir tersebut menggenangi 42kecamatan di Jakarta dengan 168 kelurahan (63,4%) dari seluruh kelurahan yangada di Jakarta. Luas genangan mencapai 16.041 hektar atau 24,25% dari luas DKIJakarta. Curah hujan yang tertinggi yang menyebabkan banjir tersebut tercatat diBekasi sebesar 250 mm/hari yang merupakan curah hujan harian maksimum denganperiode ulang 150 tahun.The flood that occurred in the city of Jakarta area on 27 January until 1 Febru ary 2002was due to the torrential rainfall in the city and also in the catchment area of riversthat flow through Jakarta. The rain which started on 26 January until 1 February 2002caused overflow in the rivers and canals. Inundation in some areas and continued tospread throughout the city of Jakarta. The inundation depth was until 5 meters. 42districts on Jakarta within 168 sub districs (63,4%) from the all subdistrics in Jakarta.The inundation area has reached about 16.041 hectare or 24,25% from the total areaDKI Jakarta. The recorded daily rainfall depth at the Bekasi station was 250 mmwhich is almost the daily rainfall depth for 150-year return period as daily rainfall.

MINIMALISASI LAHAN KRITIS MELALUI PENGELOLAAN SUMBERDAYA LAHAN DAN KONSERVASI TANAH DAN AIR SECARA TERPADU Sutopo Purwo Nugroho
Jurnal Teknologi Lingkungan Vol. 1 No. 1 (2000): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Akibat adanya pemanfaatan sumberdaya alam yang melebihi daya dukung lingkungan dan tidak dibarengi dengan usaha konservasi tanah dan air, ternyata telah menimbulkan munculnya ketidakseimbangan lingkungan yaitu terus bertambahnya luas lahan kritis. Peningkatan luas lahan kritis ini juga semakin dipercepat dengan meningkatnya tekanan penduduk terhadap lahan, khususnya di Pulau Jawa. Akibatnya pemanfaatan lahan dieksploitasi secara terus menerus sehingga menyebabkan produktivitas lahan menjadi berkurang dan lahan miskinhara. Hal ini akan berakibat pada menurunnya produksi pertanian, semakinbesarnya erosi, sedimentasi, banjir, kekeringan, pendangkalan sungai,berkurangnya umur waduk dan masalah-masalah lingkungan lainnya. Luas lahan kritis pada awal tahun 1974, jumlah lahan kritis secara nasional mencapai 10.751.000 ha, kemudian pada tahun 1998 dengan kriteria penetapan lahan kritis yang lebih objektif, lahan kritis di Indonesia mencapai 23.725.552 ha. Sedangkan luas lahan agak kritis sebesar 3.311.152 ha dan lahan potensial kritis seluas 8.806.758 ha, sehingga luas keseluruhan sebesar 35.852.462 ha atau 18,6% dari luas lahan di Indonesia. Meskipun usaha rehabilitasi lahan dan konservasi tanah dan air sudahdilakukan melalui program penghijauan dan reboisasi serta usaha lainnya, namun usaha-usaha tersebut masih belum mampu mengatasi terjadinya peningkatan luas lahan kritis. Hal ini lebih disebabkan pendekatan yang dilakukan lebih berorientasi pada penanganan fisik dan kurang memperhatikan masalah sosial ekonomi dan budaya masyarakat. Untuk itulah maka untuk mencegah peningkatan laju lahan kritis tersebut perlu dilakukan secara komprehensif, terpadu dan multisektoral. dengan melibatkan peran serta masyarakat secara menyeluruh.

ANALISIS SENSITIVITAS PARAMETER HIDROLOGI, SEDIMENTASI DAN HARA DENGAN MENGGUNAKAN MODEL AGNPS UNTUK PENGELOLAAN LINGKUNGAN Sutopo Purwo Nugroho
Jurnal Teknologi Lingkungan Vol. 1 No. 2 (2000): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

In Indonesia, the serious problems of degradation water quality from nonpoint source pollution was not yet many applied on watershed. Agricultural activities such as cultivation and application of fertilizer and pesticide will influence water quality, with activities in runoff-producing zones and near streams having a greater effect than those elsewhere. Water quality integrates all sources of pollutants. Nonpoint sources, by definition, are diffuse and not easily identified or quantified. The control technologies and best management practice available are generally expensive to beimplemented. AGNPS model is a model hydrology that should used to identify and quantify the nonpoint source pollution from watershed. The AGNPS is an event-based model that simulates surface runoff, sediment, and nutrient transport primarily from agricultural watersheds. In addition, the model considers point sources of water, sediment, nutrients, and chemical oxigen demand (COD) from animal feedlots, and spring. The model has the ability to output water quality characteristics at intermediate points throughout the watershed network. Seven parameters were selected out of twenty two parameters based on their significance in sensitivity to hydrology, erosion and sediment, and nutrient yield output. That seven parameters consist of SCS curve number, Manning’s roughness coefficient, cover and management factor, land slope, channel sideslope, practice factor and fertilization availability factor. Omitted parameters in the hypothetical scenario formulation were either parameters of uncontrollable nature such as rainfall, EI30, soil erodibility, or parameters that had least significant sensitivity such as field slope length and channel slope. The simulation with BMP system has been conducted from the parameter adjustment for seven parameters. The BMP scenario was mosteffective in reducing the degree of volume and peak runoff rate by 32,08% and 29,66% from the base value of 0,53 inches and 118,51 cfs. All erosion and sediment related nonpoint source pollutants were significantly reduced by 66,36% from the base value of 135,67 tons by altering the cover and management factor (C-factor) and the practice factor (P-factor). At the time that, total N dan total P were significantly reduced by 56,85% and 57,92% from the base value of 11,15 lbs/acre and 7,01 lbs/acre with that same of methods.

PENGARUH UKURAN SEL TERHADAP HASIL PREDIKSI MODEL AGNPS DALAM EVALUASI PENGENDALIAN KUALITAS PERAIRAN DARI SUMBER PENCEMAR PERTANIAN Sutopo Purwo Nugroho
Jurnal Teknologi Lingkungan Vol. 1 No. 3 (2000): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Water quality monitoring effort increased with concern about protection ofthe water quality from waterbody. AGNPS model, which was developed toobjectively evaluate alternative land management strategies on non point source pollution from agricultural watersheds, offers a method of predicting the quality of water from the watershed. The model has the ability to output water quality characteristics at intermediate points throughout the watershed network. The size cell was very influence the result of output model. More large of the size cell so the sediment and nutrient yield output was large too. Scale of map for indentify the input model was influnce the result of output model.

PENGARUH KONSEP SISTEM DAN LINGKUNGAN DALAM MODIFIKASI CUACA TERHADAP PENINGKATAN CURAH HUJAN DAN KETERSEDIAAN AIR DI DAS CITARUM Sutopo Purwo Nugroho
Jurnal Teknologi Lingkungan Vol. 2 No. 2 (2001): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Weather modification technology was applied in Citarum Watershed – West Java on 12 March – 10 April 2001 for increase water resources in Saguling, Cirata and Jatiluhur Dams. The application was based indication of Citarum River inflow decreased at the end of 2001 that so three cascade dams had water storage deficits. Weather modification technology by employing system and environment concept has been increase the rainfall and inflow of Citarum Watershed. The average inflow of Citarum River was 326,81 m3/sec and nett volume storage in the dams were 559,06 million m3.

EVALUASI PEMBANGUNAN WILAYAH PENGEMBANGAN SELATAN DKI JAKARTA SEBAGAI KAWASAN RESAPAN AIR Sutopo Purwo Nugroho
Jurnal Teknologi Lingkungan Vol. 3 No. 1 (2002): JURNAL TEKNIK LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Southern Development Region DKI Jakarta is set as a water recharge area in the mean of decreasing the problem of water resources in DKI Jakarta. The fact, however, this rule does not run well, because there is not action plan and along with followed by development control and law enforcement. what that rule. Besides, the decree on Southern Develeopment Region as water recharging area is not optimal in either in groundwater stream point of view.That so, development in Southern Development Region must directed accomplishment with open space standard, park and playing field for city region, beginning of playlot, playground, playfield, and urban park. There is not only for old settlement, but new settlement development is necessary to put spatial arrangement in order.

PERGESERAN KEBIJAKAN DAN PARADIGMA BARU DALAM PENGELOLAAN DAERAH ALIRAN SUNGAI DI INDONESIA Sutopo Purwo Nugroho
Jurnal Teknologi Lingkungan Vol. 4 No. 3 (2003): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Integrated watershed management, which aims at restoration of a soundhydrologic regime in the watershed considering water resources utilization,appropriate landuse, water quality control and environmental conservation, is becoming crucially important in Indonesia. Because, the land degradation of watershed in Indonesia more increases every time. There is a growing concern that many parts of the Indonesia watershed will continue to face problems of watershed degradation. The basic problem in most watershed area, especially in Java, is too many people being concentrated on too small land base. Besides that, the causes of watershed degradation are complex and interrelated, such as too much emphasis being placed on economic growth in the management of natural resources, and the continuing presence of poverty, population growth, infrastructural and industrial development. Thus, the exisiting environmental problems and their overall impacts are not only biophysical in nature, but also social.The integrated watershed approach stresses the interaction of all activities that take place throughout the watershed. The strategy of watershed management approach uses new paradigm with people of participation and using community development in operational, practices and bottom up approach.

Co-Authors A.A. Ketut Agung Cahyawan W Baginda Patar Sitorus Baginda Patar Sitorus, Baginda Patar Findy Renggono Findy Renggono, Findy Florentinus Heru Widodo Florentinus Heru Widodo, Florentinus Heru Jon Arifian Jon Arifian, Jon Mahally Kudsy Mahally Kudsy, Mahally Mimin Karmini R Djoko Goenawan R Djoko Goenawan, R Djoko Rino Bahtiar Yahya Rino Bahtiar Yahya, Rino Bahtiar Samsul Bahri Satyo Nuryanto Satyo Nuryanto, Satyo Sunu Tikno Sunu Tikno, Sunu Veithzal Rivai Zainal

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