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All Journal JURNAL SIPIL STATIK JURNAL ILMIAH MEDIA ENGINEERING TEKNO
Tommy Jansen, Tommy
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Civil Engineering, Building, Construction & Architecture Engineering Languange, Linguistic, Communication & Media

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Journal : JURNAL ILMIAH MEDIA ENGINEERING

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Trend Sedimen Transport Pada Laut Ariake Utara, Japan Jansen, Tommy
JURNAL ILMIAH MEDIA ENGINEERING Vol 8, No 2 (2018): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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Abstract

The sediment balance is the balance of sediment volume entering and exiting a particular section of the coast or an estuary. These consists of the evaluation of sediment fluxes, sources and sinks from different processes that give rise to additions and subtractions within a control section of the coast in order to gain a better understanding of the coast system. The areas as a control volume are placed in north part and south part of the North Ariake Sea. Cross section AA, BB and cross section CC, DD are needed as the area that the flow through the control volume at spring tide and neap tide. The suspended sediment concentration entering and exiting within transport process at 30 August 2004 21:10:00 and 31 August 2004 15:46:40 of rectangular AABB and rectangular CCDD at spring and neap tide. The trend of transport sediment in rectangular AABB effected by tide it tends to catch little more sediment or deposition occurs. The trend of transport sediment in rectangular CCDD effected by tide it tends to export more sediment or erosion occurs. The phenomena in the north Ariake Sea that tidal flats keep existence and the concentration of sediment is higher around Chikugo River estuaries and nearshore, and the resuspension of sediment keep occurring at offshore of the north Ariake Sea. Keywords: sedimen transport, sedimen balance, coast, erosion, estuaries, resuspension
SEDIMENTASI, SALINITAS DA INTRUSI AIR LAUT PADA PROFIL MUARA SUNGAI CHIKUGO, JAPAN Jansen, Tommy
JURNAL ILMIAH MEDIA ENGINEERING Vol 6, No 2 (2016): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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Abstract

Intensitas  arus pasang surut relatif terhadap aliran sungai terkombinasi dengan konfigurasi geometrik dari estuari membentuk pola sirkulasi di daerah mulut sungai. Pasang surut dan arus pasang surut membangkitkan gaya gaya turbulensi di estuari yang mempengaruhi stratifikasi salinitas dan sedimen suspensi. Intrusi air laut  mencapai jarak kurang lebih 4200m dari mulut sungai kearah hulu sungai Chikugo, konsentrasi sedimen suspensi (SSC) maksimum terjadi pada jarak kurang lebih 5000m dari mulut sungai kearah hulu dari sungai yang sama. Kata kunci : sedimentasi, salinitas, arus pasut, intrusi, sungai
Kajian Efektivitas Pengendalian Banjir di DAS Torosik Jansen, Dave; Jansen, Tommy; Hendratta, Liany Amelia
JURNAL ILMIAH MEDIA ENGINEERING Vol 7, No 3 (2017): JURNAL ILMIAH MEDIA ENGINEERING
Publisher : Sam Ratulangi University

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The catchment area of Torosik River exists in Pinolosian Bolaang Mongondow region, often make flooding in society area because the discharge flooding is more than Torosik River capacity. The reduction of flood discharge is carried over with river flowing of Torosik reach in existing condition and the exist of retention pond in upstream part of river and river normalization in downstream part, using HMS and HEC-RAS computation tools. The peak outflow of one retention pond results 88.5 m3/sec, two retention pond results 86.9 m3/sec, and 93.3 m3/sec for existing condition. River flow simulation of river normalization condition results average water surface level 12m , and existing condition results average water surface level 13m. The reduction of flood discharge in existing condition and the exist of two retention pond result 6.4 m3/sec, if it is conversed to the height of water surface with constant velocity then get the height of water is just 0.5m.The river normalization result of discharge reduction more than the exist of retention pond of the Torosik catchment area.  Keywords: watershed,, catchment area, flood discharge, peak discharge, HMS-HECRAS.
Co-Authors Ariestides K. T. Dundu Cindy J. Supit Hansje Tawas Jansen, Dave Jasin, M. Ihsan Jasin, Muh. Ihsan Jeffry D. Mamoto Jeffry Swingly Frans Sumarauw Kalangi, Peni Patricia Lahamendu, Victor Christofel Lambertus Tanudjaja Liany Amelia Hendratta M. I. Jasin Majojo, Ais Mamanua, Injilia Christy Parera, Romario A. L. Pasomba, Theodorus Ponomban, Kristoforus Raco, Maria Gloria Rivaldy, Dandy Ramdan Rizal, Nurul Fajri T. Rumayar, Feldy Saad, Nurul Khofifah Sabatun, Kurniawan M. Hi. Sahalessy, Garry L. Sangari, Cristabella Pamfilia Siyulan, Reinaldo C. Taarama, Rydle Christian Tallane, Wilson Fredik Tangkudung, Rio Efraim Thambas, Arthur H. Tiny Mananoma Uruilal, Ivan Leonardo Yong, Ayub Giovano