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All Journal JURNAL SAINS DAN TEKNOLOGI INDONESIA JURNAL AIR INDONESIA Marine Research in Indonesia Jurnal Hidrosfir Indonesia
Seno Adi
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Agriculture, Biological Sciences & Forestry Computer Science & IT Earth & Planetary Sciences Education

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DISSOLVED AND PARTICULATE CARBON IN JAKARTA BAY, INDONESIA Nugrahadi, Mochamad Saleh; Yanagi, Tetsuo; Tejakusuma, I. G.; Adi, Seno; Darmawan, Rahmania A.
Marine Research in Indonesia Vol 34, No 1 (2009)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8166.962 KB) | DOI: 10.14203/mri.v34i1.517

Abstract

In order to investigate spatial and temporal variability of dissolved organic carbon (DOC) and particulate organic carbon (POC), several samples were collected from five estuaries, inner part and outer part of Jakarta Bay. The samples were collected on 15 and 16 February 2007, a week after heavy flood in Jakarta Area, and on 16 May 2007. DOC concentration in February and May in Jakarta Bay ranged between 100-950 µg-C/l and between 0-850 µg-C/l respectively. POC concentrations ranged between 50-650 µg-C /l and 50-900 µg-C /1 in February and May 2007, respectively. Even though the concentrations between both periods were similar, the load of organic carbon from the land to Jakarta Bay showed a large contrast due to the different amount of freshwater input. The Total organic carbon fluxes from the rivers to the bay in February and May 2007 were 107.6 t d- C-(ton per day Carbon) and 42.7 t d-1 C, respectively.
ANALISIS DAN KARAKTERISASI BADAN AIR SUNGAI, DALAM RANGKA MENUNJANG PEMASANGAN SISTIM PEMANTAUAN SUNGAI SECARA TELEMETRI Adi, Seno
Jurnal Hidrosfir Indonesia Vol 3, No 3 (2008)
Publisher : Jurnal Hidrosfir Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (148.642 KB)

Abstract

Untuk mengetahui karakteristik suatu badan air sungai dengan lebar penampang yang cukup besar memerlukan pendekatan beberapa pengamatan dengan melakukan pengukuran secara vertikal maupun horizontal. Pengukuran vertikal adalah pengukuran secara memanjang dari sisi tepi yang satu kesisi tepi lawannya sedangkan pengukuran horizontal adalah dengan membagi kedalaman sungai. Sehubungan dengan akan dipasangnya suatu sistim pemantauan telemetri disungai Siak dimana sensor akan diletakkan pada tepi sungai dgn jarak kira-kira 20m daritepi sungai, maka untuk mendapatkan data yang mewakili telah dilakukanpengukuran secara vertical dengan interval 20 m dan pengukuran horizontal 0,5 m, 5 m, 10 m, 15 m dengan beberapa parameter yg diukur adalah temteratur, pH, kandungan Oksigen, konduktivitas, turbiditas, kecepatan aliran. Berdasarkan hasil pengukuran dan pengamatan dari beberapa parameter kuantitas dan kualitas air pada penampang badan air sungai, hanya kecepatan aliran sungai dan kandungan oksigen terlarut yang memiliki perbedaan yang signifikan. Kecepatan aliran sungai pada bagian tengah sungai dapat mencapai 10 x kecepatan aliran pada tepi sungai,terutama pada saat kondisi surut, sedangkan pada saat pasang hanya terjadi pengaliran dibagian tengah dan dibagian tepi sungai tidak terjadi pengaliran (kecepatan aliran 0). Sedangkan kandungan oksigen terlarut pada bagian tengah sungai menunjukkan nilai yang lebih besar sampai dengan 0,5 - 0,6 mg/l dibandingkan pada sisi tepi sungai. Dengan demikian penempatan alat ukur kualitas air maupun kuantitas air (terutama parameter kecepatan aliran) secara permanen yang biasanya hanya mungkin dilakukan pada bagian tepi sungai, perlu memasukkan faktor koreksi sebagai hasil final yang dapat mewakili konsidi suatu profil badan air sungai.
DISSOLVED AND PARTICULATE CARBON IN JAKARTA BAY, INDONESIA Nugrahadi, Mochamad Saleh; Yanagi, Tetsuo; Tejakusuma, I. G.; Adi, Seno; Darmawan, Rahmania A.
Marine Research in Indonesia Vol 34 No 1 (2009)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8166.962 KB) | DOI: 10.14203/mri.v34i1.517

Abstract

In order to investigate spatial and temporal variability of dissolved organic carbon (DOC) and particulate organic carbon (POC), several samples were collected from five estuaries, inner part and outer part of Jakarta Bay. The samples were collected on 15 and 16 February 2007, a week after heavy flood in Jakarta Area, and on 16 May 2007. DOC concentration in February and May in Jakarta Bay ranged between 100-950 µg-C/l and between 0-850 µg-C/l respectively. POC concentrations ranged between 50-650 µg-C /l and 50-900 µg-C /1 in February and May 2007, respectively. Even though the concentrations between both periods were similar, the load of organic carbon from the land to Jakarta Bay showed a large contrast due to the different amount of freshwater input. The Total organic carbon fluxes from the rivers to the bay in February and May 2007 were 107.6 t d-' C-(ton per day Carbon) and 42.7 t d-1 C, respectively.
ANALISIS PEMBANGUNAN RENDAH KARBON STUDI KASUS PROPINSI LAMPUNG Adi, Seno; aldrian, edvin; nuraini, dian; saroja, damayanti; tejakusuma, iwan G
Jurnal Sains dan Teknologi Indonesia Vol. 13 No. 2 (2011)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1309.324 KB) | DOI: 10.29122/jsti.v13i2.884

Abstract

The increasing trend of CO2 emission globally, has been creating climate change in some areas in the world. The impact of climate change could cause disaster for human life such as drought and flood, health deseases, etc. Currently many programs and schemes are introduced to reduce CO2 emission. The low carbon development is one of those programs which is the economic development has to take into acount the CO2 emission reduction. This study found 90 % of the CO2 emision came from forestry sector, especially deforestation and fires. The recent CO2 emission was 70,3 MtCO2e in 2005 and estimated 79 MtCO2e in 2020, then finally will be 93,5 MtCO2e. Therefore mitigation actions should be focused on the forestry sector, these are reforestation & afforestation, REDD, mangrove rehabilitation, agroforestry development, and fire protection. These action programs potentially could reduce the CO2 emission as high as 76,8% in 2030.
KARAKTERISASI BENCANA BANJIR BANDANG DI INDONESIA Adi, Seno
Jurnal Sains dan Teknologi Indonesia Vol. 15 No. 1 (2013)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (419.595 KB) | DOI: 10.29122/jsti.v15i1.938

Abstract

Saat ini bencana hidrometeorologi menunjukkan tren meningkat. Bencana banjir bandang adalah bagian dari bencana hidrometeorologi yang terindikasi berdampak signifikan terhadap kehidupan, dan harta benda. Faktor utama banjir bandang adalah dipicu oleh intensitas hujan ekstrim. Kemudian berhubungan dengan kejadian longsor yang menyumbat aliran sungai membentuk bendung alam. Selanjutnya tekanan aliran sungai menjebol bendung alami tersebut sehingga terjadi banjir bandang yang ditandai dengan kecepatan aliran yang tinggi dengan membawa lumpur, kayu, dan batu. Setidaknya terjadi 10 kejadian banjir bandang di Indonesia pada tahun 2012 yang mengakibatkan 15 korban jiwa dan kerusakan harta benda pada setiap kejadian bencana. Untuk mengatasi bencana banjir bandang beberapa tindakan mitigasi dapat dilakukan yaitu dengan pemetaan daerah bahaya, sistem peringatan dini, kesiapsiagaan masyarakat, dan peramalan hidrometeorologi. Sayangnya dari upaya tindakan mitigasi tersebut, hanya beberapa daerah yang berpotensi bencana banjir bandang yang siap dengan upaya tersebut.
PEMANFAATAN DAN KONSERVASI SUMBER AIR DALAM KEADAAN DARURAT Adi, Seno
Jurnal Air Indonesia Vol. 5 No. 1 (2009): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (229.093 KB) | DOI: 10.29122/jai.v5i1.2427

Abstract

The need of clean water availability is the basic need of human being for living. In case of emergency, the clean water availability is still needed firstly.  In this  situation, we have to has a practical knowledge on water resource exploration as well as exploitation effectively and efficiently in such away the water utilization  are sustainable. The water availability properties such as, quality, quantity,   and site are related to the technology  for water conservation and exploitation.  Basically, the water availability in emergency could be developed based on the hydrological and hydro geological properties of the nearest location.   In situ direct water utilization with bad water quality  (in case of flooding)  could be handled by using tools of water survival kit such as water bag, purification tablet or powder, and purification bottle.  The water utilization in short term with limited scale (in case of  refugees camp) could be developed by constructing  shallow well  (dig well or pumping well) if the shallow aquifer are available. The water utilization in medium term could be developed by constructing water conservation and exploitation system such as mini dam, infiltration galleries, spring water conservation, water seepage,  and rain water harvesting.    Key words : sumber air, darurat, hidrologi, hidrogeologi, konservasi
SEDIMENT AND SUSPENDED PARTICULATE MATTER OF JAKARTA BAY, INDONESIA Tejakusuma, Iwan G.; Adi, Seno; Nugrahadi, M.S; D., Rahmania; Yanagi, T.
Jurnal Air Indonesia Vol. 5 No. 2 (2009): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (507.178 KB) | DOI: 10.29122/jai.v5i2.2442

Abstract

Jakarta Bay is a semi enclosed bay located in the northern coast of Jakarta Metropolitan City. Hydrologically 13 rivers flowing in the Jakarta region and there are three big rivers with significant discharge to the Jakarta Bay namely Citarum, Ciliwung, and Cisadane Rivers. Jakarta, as Indonesian capital city with population of 8.725.630 inhabitants, and another 15 million people live in the surrounded suburban of Jakarta, creates a significant anthropogenic impact to the environmental system. Limited infrastructures, such as no sewerage system and lack of industrial waste management, cause the rivers in this region have over their carrying capacity.Seventeen sampling stations were determined in the Jakarta Bay, consisting of 5 stations at the river mouths (estuaries) and other 12 stations in the bay spreading from the coastal to offshore areas. Water and sediment samples were taken during 2 monsoonal or seasonal variations, August 2006 for dry season and February 2007 for rainy season respectively. Additionally, samples were also taken in May 2007.Sediment distribution in the estuary consists mostly of black clay. The sediments clays were bad smell. In the coastal region and in the dry season, the sediments consists of black clay and at one sampling site (station S3) the sediment was bad smell. However, all sampling sites became bad smell in the rainy season. In the inner bay area, sediments were greyish green sandy clay with some shell fragments. In the outer bay, the sediments were dominated by greyish green clayey sand with some shell fragments. The black clay with bad smell is indicative of anthropogenic influence from Jakarta River Basin. C/N ratio of the sediments in the dry season ranged from 1 to about 4.2 where in the estuaries (at stations M1, M2 and M4) the ratio were higher compared to the inner and outer bays. The C/N ratio of suspended particulate matter ranged from the lowest ratio of 0.7 to the highest ratio of 17.7 at the bottom layer and lesser ranged of 0.7 to 9.8 at  surface layer. POC concentrations ranged between 50-650 µM and 50-900 µM, in February and May, respectively. High concentrations of POC exists along the coastline or estuaries then decreasing toward the sea. POC is distributed widely in February than that in May due to higher discharge from the rivers. The average TOC concentrations in February is lower than that in May, but the TOC load in February was much higher than that in May due to the big differences of river discharge and because the samples were taken a week after the big flood in Jakarta area (February 4th - 6th, 2007). Total organic carbon fluxes from the river to the bay in February and May 2007 were 107.6 T /day C and 42.7 T /day C, respectively. Key words : sediment, anthropogenic influence, C/N Ratio, POC, TOC, flux
ANALISIS DAN KARAKTERISASI BADAN AIR SUNGAI, DALAM RANGKA MENUNJANG PEMASANGAN SISTIM PEMANTAUAN SUNGAI SECARA TELEMETRI Adi, Seno
Jurnal Hidrosfir Indonesia Vol 3, No 3 (2008)
Publisher : Jurnal Hidrosfir Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (148.642 KB)

Abstract

Untuk mengetahui karakteristik suatu badan air sungai dengan lebar penampang yang cukup besar memerlukan pendekatan beberapa pengamatan dengan melakukan pengukuran secara vertikal maupun horizontal. Pengukuran vertikal adalah pengukuran secara memanjang dari sisi tepi yang satu kesisi tepi lawannya sedangkan pengukuran horizontal adalah dengan membagi kedalaman sungai. Sehubungan dengan akan dipasangnya suatu sistim pemantauan telemetri disungai Siak dimana sensor akan diletakkan pada tepi sungai dgn jarak kira-kira 20m daritepi sungai, maka untuk mendapatkan data yang mewakili telah dilakukanpengukuran secara vertical dengan interval 20 m dan pengukuran horizontal 0,5 m, 5 m, 10 m, 15 m dengan beberapa parameter yg diukur adalah temteratur, pH, kandungan Oksigen, konduktivitas, turbiditas, kecepatan aliran. Berdasarkan hasil pengukuran dan pengamatan dari beberapa parameter kuantitas dan kualitas air pada penampang badan air sungai, hanya kecepatan aliran sungai dan kandungan oksigen terlarut yang memiliki perbedaan yang signifikan. Kecepatan aliran sungai pada bagian tengah sungai dapat mencapai 10 x kecepatan aliran pada tepi sungai,terutama pada saat kondisi surut, sedangkan pada saat pasang hanya terjadi pengaliran dibagian tengah dan dibagian tepi sungai tidak terjadi pengaliran (kecepatan aliran 0). Sedangkan kandungan oksigen terlarut pada bagian tengah sungai menunjukkan nilai yang lebih besar sampai dengan 0,5 - 0,6 mg/l dibandingkan pada sisi tepi sungai. Dengan demikian penempatan alat ukur kualitas air maupun kuantitas air (terutama parameter kecepatan aliran) secara permanen yang biasanya hanya mungkin dilakukan pada bagian tepi sungai, perlu memasukkan faktor koreksi sebagai hasil final yang dapat mewakili konsidi suatu profil badan air sungai.
PEMANFAATAN DAN KONSERVASI SUMBER AIR DALAM KEADAAN DARURAT Adi, Seno
Jurnal Air Indonesia Vol. 5 No. 1 (2009): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jai.v5i1.2427

Abstract

The need of clean water availability is the basic need of human being for living. In case of emergency, the clean water availability is still needed firstly.  In this  situation, we have to has a practical knowledge on water resource exploration as well as exploitation effectively and efficiently in such away the water utilization  are sustainable. The water availability properties such as, quality, quantity,   and site are related to the technology  for water conservation and exploitation.  Basically, the water availability in emergency could be developed based on the hydrological and hydro geological properties of the nearest location.   In situ direct water utilization with bad water quality  (in case of flooding)  could be handled by using tools of water survival kit such as water bag, purification tablet or powder, and purification bottle.  The water utilization in short term with limited scale (in case of  refugees camp) could be developed by constructing  shallow well  (dig well or pumping well) if the shallow aquifer are available. The water utilization in medium term could be developed by constructing water conservation and exploitation system such as mini dam, infiltration galleries, spring water conservation, water seepage,  and rain water harvesting.    Key words : sumber air, darurat, hidrologi, hidrogeologi, konservasi
SEDIMENT AND SUSPENDED PARTICULATE MATTER OF JAKARTA BAY, INDONESIA Tejakusuma, Iwan G.; Adi, Seno; Nugrahadi, M.S; D., Rahmania; Yanagi, T.
Jurnal Air Indonesia Vol. 5 No. 2 (2009): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jai.v5i2.2442

Abstract

Jakarta Bay is a semi enclosed bay located in the northern coast of Jakarta Metropolitan City. Hydrologically 13 rivers flowing in the Jakarta region and there are three big rivers with significant discharge to the Jakarta Bay namely Citarum, Ciliwung, and Cisadane Rivers. Jakarta, as Indonesian capital city with population of 8.725.630 inhabitants, and another 15 million people live in the surrounded suburban of Jakarta, creates a significant anthropogenic impact to the environmental system. Limited infrastructures, such as no sewerage system and lack of industrial waste management, cause the rivers in this region have over their carrying capacity.Seventeen sampling stations were determined in the Jakarta Bay, consisting of 5 stations at the river mouths (estuaries) and other 12 stations in the bay spreading from the coastal to offshore areas. Water and sediment samples were taken during 2 monsoonal or seasonal variations, August 2006 for dry season and February 2007 for rainy season respectively. Additionally, samples were also taken in May 2007.Sediment distribution in the estuary consists mostly of black clay. The sediments clays were bad smell. In the coastal region and in the dry season, the sediments consists of black clay and at one sampling site (station S3) the sediment was bad smell. However, all sampling sites became bad smell in the rainy season. In the inner bay area, sediments were greyish green sandy clay with some shell fragments. In the outer bay, the sediments were dominated by greyish green clayey sand with some shell fragments. The black clay with bad smell is indicative of anthropogenic influence from Jakarta River Basin. C/N ratio of the sediments in the dry season ranged from 1 to about 4.2 where in the estuaries (at stations M1, M2 and M4) the ratio were higher compared to the inner and outer bays. The C/N ratio of suspended particulate matter ranged from the lowest ratio of 0.7 to the highest ratio of 17.7 at the bottom layer and lesser ranged of 0.7 to 9.8 at  surface layer. POC concentrations ranged between 50-650 µM and 50-900 µM, in February and May, respectively. High concentrations of POC exists along the coastline or estuaries then decreasing toward the sea. POC is distributed widely in February than that in May due to higher discharge from the rivers. The average TOC concentrations in February is lower than that in May, but the TOC load in February was much higher than that in May due to the big differences of river discharge and because the samples were taken a week after the big flood in Jakarta area (February 4th - 6th, 2007). Total organic carbon fluxes from the river to the bay in February and May 2007 were 107.6 T /day C and 42.7 T /day C, respectively. Key words : sediment, anthropogenic influence, C/N Ratio, POC, TOC, flux
Co-Authors D., Rahmania Dian Nuraini Edvin Aldrian Iwan G. Tejakusuma Nugrahadi, M.S Nugrahadi, Mochamad Saleh Nugrahadi, Mochamad Saleh Rahmania A. Darmawan saroja, damayanti T. Yanagi Tejakusuma, I. G. Tejakusuma, I. G. tejakusuma, iwan G Yanagi, Tetsuo Yanagi, Tetsuo