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INDONESIA
Jurnal Hidrosfir Indonesia
Published by Badan Pengkajian dan Penerapan Teknologi
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Articles 128 Documents
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MASALAH BANJIR SEBAGAI AKIBAT DARI BURUKNYA SISTEM PENGELOLAAN DAS: STUDI KASUS DI DAS CANTIGA BINTARO Rahardjo, Petrus Nugro
Jurnal Hidrosfir Indonesia Vol 4, No 1 (2009)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Management of a catchment area should be done properly. For an example, there is no doubt a big mistake has already been done by the local government of DKI Jakarta in managing the 3 catchment areas, such as Ciliwung, Citarum and Cisadane. The management of the three catchment areas is coordinated by DKI Jakarta, together with Province West Java and Banten. The local governments do not have a consistency in planning and developing their region, especially for the supporting regions located in theupstream area. The effect is a big flood happened in Jakarta on the first February 2008. For the small catchment area, such as Cantiga, it is a good example to be discussed. The catchment area is located in district Pondok Aren. Flooding continuously happens every rainy season. The seven causes are no sustainable development program, no cleanly way of life, no good drainage system, unconsistency on regional planning and development program, no intensive conservation program, land subsidence and very high amount of rainfall. To cope with the flood problem and to carry out the flood control action, many consistently applied programs have to be done, ie. sustainable development, mopping up way of life, water front village concept implementation, one river one management concept implementation, artificialrecharge ponds and ground water injection.
Pengenalan Data Oseanografi Setiawan, Agus
Jurnal Hidrosfir Indonesia Vol 2, No 2 (2007)
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Abstract

Data, in general, can be classified into primary and secondary data. Primary data can be defined as information that has been collected at first hand, while secondary data usually refer to the information that has been collected by another people or agency. In oceanography, based on its branch, data can be divided into physical oceanography data, chemical oceanography data, marine biology data, and marine geology data. In south east Asia, observations of marine biology and physical oceanography parameters have been performed since 17th century (during the colonial period). One of the most important expeditions that give valuable contribution during this period is Snellius expedition (1929-1930). Since 1914, a comprehensive study has been conducted by Dutch Laboratorium for Zeeondersoek in the Indonesian waters such as Java Sea, South China Sea, and Malaka Strait (1914-1919) and Java Sea (1939-1941). During 1956-1957, the first Indonesian research vessel R/ V Samudera did measurements at 100 oceanographic stations from eastern part of the Indonesian waters until seawaters in the southern Java and Sunda shelf. Some of the data have been collected during those period then used by Wyrtki (at that time he was a director of Marine Science Institute Jakarta) to make monthly current circulation maps and to study current circulation pattern in the south east Asia.Keywords: Oceanography, data
PENELITIAN SUMBERDAYA AIR DI BALAI BENIH IKAN (BBI) KECAMATAN RAMBATAN KABUPATEN TANAH DATAR - SUMATERA BARAT Garinas, Wahyu
Jurnal Hidrosfir Indonesia Vol 3, No 2 (2008)
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Abstract

Balai Benih Ikan (BBI) is an aquaculture located in Tanah Datar district. Thisaquaculture experiencing water resources shortage. New water resources are needed for the aquaculture. The interpretation of imaging resistivity showed that at BBI, water resources lies between 70 to 100 meter depth. Aquifer thickness varies between 5 to 25 meters and were found at observation points 40 to 125 meter. Water resources at BBI was predicted found on top of the hard rock and thick layer. Water resources interpreted that the used daily as water trap on the rock layer. This existing BBI water resources are not the potential aquifer. Therefore BBI has shortage of water resources. In the future, water resources for BBI is suggested to be taken from groundwater about (100 – 160) meter to the west.
STUDY OF RAINFALL AND RIVER DEBIT INTERACTION USING RATIONAL METHOD TO DETERMINE INTRUSION OF SEA WATER IN THE JAKARTA BAY AREA Lubis, Atika; Permadhi, Yan F; Haryanto, Eko
Jurnal Hidrosfir Indonesia Vol 5, No 3 (2010)
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Abstract

The Ciliwung River that flow through Jakarta Province is one of important factor for the city. The deficiently water management in Jakarta caused water supply crisis within the area. The unsufficient water supply for Jakarta is causing groundwater pumping by the local people to comply their needs of water. Thus generated saline water intrusion from the Ciliwung’s downstream to the upstream through to the people’s settelement.The objective of this research is to find how far the sea water intrusion at Jakarta Bay by analyzing the interaction between rainfall with the Ciliwung River’s debit. Jakarta’s land cover is dominated by watertight materials such as concrete and asphalt induced runoff greater than infiltration. The current land cover caused the groundwater contaminated by sea water intrusion. The hypothesis is based on the groundwater calculation for Ciliwung’s River Basin. It showed the average ofbaseflow for the the Ciliwung’s River Basin range between 550 – 680 mm per year. The baseflow range shows that water absorbed by the ground is lesser than the rainfall at Ciliwung’s RiverBasin that ranged between 2000 – 2500 mm per year.Afterwards, using ten years of climate data and debit data from Katulampa Station (the Upstream of Sungai Ciliwung) and also using data from the Angke Estuary and the Ancol Estuary (Lower Ciliwung River) acquired the maximum sea water intrusion in Ciliwung River on May 6, 2005. The intrusion reaches is ranged between 14 – 20 kms measured from the downstream of Angke Estuary. While the intrusion at the Ancol Estuary ranged from 18 – 22 kms.
PENGARUH HABITAT KOMPLEKS TERHADAP KOMPOSISI KOMUNITAS MAKROINVETEBRATA DALAM SEBUAH KOLAM AIR TAWAR YANG BERSTATUS DYSTROPHIC Tjokrokusumo, Sabaruddin Wagiman
Jurnal Hidrosfir Indonesia Vol 1, No 3 (2006)
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Abstract

A study of the role of habitat complexity and predation on the composition ofthe macroinvertebrate community in a small dystrophic wetland wasundertaken using artificial substrates. Rectangular samplers of increasingcomplexity were constructed from nylon mesh and wooden dowelling.Samplers of three levels of complexity were developed in both caged anduncaged forms to evaluate the effects of substrate complexity and predationon macroinvertebrate richness and abundance. A total of 24 samplers (6treatments x 4 relicates were deployed in swamp for 8 weeks in September/November 1995. The results indicated that increased habitat complexity doeslead to species richness, but cages have an effect in addition to layers aspreferred habitat for both prey and predator. Increasing richness is not followedby an increase in abundance in more complex habitats. However, an increasein habitat complexity tended to result in a decrease in abundance, probablydue to predation with the lowest abundance found at intermediate compexity.
PENGGUNAAN MIKROALGA CHLORELLA PYRENOIDOSA CHICK AMOBIL UNTUK MENINGKATKAN KUALITAS AIR DALAM AKUAKULTUR Riffiani, Rini
Jurnal Hidrosfir Indonesia Vol 5, No 2 (2010)
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Abstract

Immobilized microalgae Chlorella pyrenoidosa was applied initially to nutrient and heavy metal removal of wastewater. Immobilized microalgae using alginate was then developed for aquaculture application, such as controlling fish water culture quality to uptake concentration of ammonium, nitrate and to increase the oxygen level in water. During immobilization, algal cell maintain their respiratory and photosynthetic activities as that cell in the normal condition. The objective of this research was to examine the role of C. pyrenoidosa immobile on controlling the water quality by measuring ammonium, nitrate, and dissolved oxygen content. Five aquariums consisted of 40 litres of water were filled with 20 Nile Tilapia (Oreothromis niloticus) with the average weight between 1.6 and 1.7 g. The immobile algae cell were packaged in two nillon porus bag (pore size was 2x3 mm in diameter) and each immobile cell had 4 millimeter in diameter. Each aquarium was added with 3000, 4000, 5000, and 6000 of immobile cell. The treatment had 2 replicates. The results showed that the aquarium filled with 4000 beads of immobile cell gave the best result. The ammonium content on the water decrease 6,626 ppm/day, nitrate content on the water decreased 13.99 ppm/ day, soluble oxygen raised 0.766 per day and fish biomass raised 1.56 g/fish for 15 days.
PENGARUH PERBEDAAN DOSIS OKSIGEN TERLARUT (DO) PADA DEGRADASI AMONIUM KOLAM KAJIAN BUDIDAYA UDANG Komarawidjaja, Wage
Jurnal Hidrosfir Indonesia Vol 1, No 1 (2006)
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Abstract

The objective of the study is to determine the effectiveness of bacterial application and various continuous dissolved oxygen (DO) treatment for nitrogen (ammonia, nitrite and nitrate) degradation in shrimp culture. The DO treatment was set as 4.5 mg/L for treatment-I, 5.5 mg/L for treatment-II and 6.5 mg/L for treatment-III. The batch oxidation was conducted for a period of 20 days. The temperature, pH, salinitas, DO, ammonia, nitrite and nitrate were determined.Based on some previous research papers. NH3 becomes toxic to shrimp if the concentration is higher than 0.54mg/Lr. NH3 measurement on this experiment was about 0.01 mg/L up to 2.5 mg/L, but frequently was found lower than 0.54 mg/L in the pond under treatment-III (6.5 mg/L DO).The result also indicates that nitrification process in the experiment pond was not only depend on DO level and abundance of nitrifier, but also was influenced by a possibility of the occurrence of organic compound that inhibit nitrification.
IDENTIFIKASI AKUIFER AIR TANAH DI KEC. TAMANSARI, KOTA TASIKMALAYA DENGAN METODE GEOLISTRIK Wibowo, Mardi
Jurnal Hidrosfir Indonesia Vol 4, No 2 (2009)
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Abstract

Along with increase in population and economic growth inTasikmalaya Residence cause the need of water is increased too.The majority these need take from groundwater resources.Occurrence groundwater resources depends on many factor likelandform (landscapes), geology, precipitation, land use, etc.Resistivity geoelectric survey (method) can detect groundwaterresources occurrence. The goals of this survey is to predict geometryand distribution of groundwater reservoir (aquifer). This survey useresisitivity method with Schumblerger Configuration. Generally,underground condition of Tamansari area consist of 4 layers oflithology i.e. pebbly sandstone, sandstone, clayey sandstone andsandy claystone. Sandstones have good potential as aquifer.Sandstone layer is evenly distributed in Tamansari area at depthbetween 1 m – 10 m. For shallow groundwater resources exploitationshould be directed at south east and south west part of Tamansariarea; while for deep groundwater resources exploitation can directedanywhere at depth more than 100 m.
STUDI PEMILIHAN LOKASI ALTERNATIF PELABUHAN TRISAKTI BANJARMASIN PROPINSI KALIMANTAN SELATAN Syaefudin, Syaefudin
Jurnal Hidrosfir Indonesia Vol 3, No 3 (2008)
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Abstract

The operational of Trisakti port , Banjarmasin, South Kalimantan is only 3 hoursperday due to sedimentation and sea lane damaged. This condition became worse inline with forest conversion in hinterland area. Selection of alternative port was carried out at seven coastal areas in Tanah Laut regency. Based on the result of multicriteria analysis, the best location for alternative port is Batakan-Tanjung Coast.
Kondisi Pencemaran Perairan Teluk Jakarta Yudo, Satmoko
Jurnal Hidrosfir Indonesia Vol 2, No 3 (2007)
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Abstract

Jakarta bay is a semi-closed waters located in north of Jakarta city. This waters has been getting pollutant such as domestic, organic and industrial waste, heavy metal or spill oil which trend to rise and it’s afraid to exceed its supportive capacity. To empty some rivers across Jakarta area into Jakarta bay, waters carry many pollutant. Every rives across Jakarta emty into Jakarta bay waters and it’s water quality is very effected by the condition of river water quality flowing to Jakarta bay. To know how bad the pollutan in Jakarta bay waters we have to check the condition of it’s water quality periodically. It is hope that the conclusion could be the ground to make preventions.Keywords: Jakarta Bay, water pollutant, waters quality database program development.

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