scholarly journals Field Observation of Turbulent Flow in Two-Layer System at a River Mouth

1984 ◽  
Vol 28 ◽  
pp. 87-92
Keyword(s):  
Turbulent Flow ◽  
Field Observation ◽  
River Mouth ◽  
Layer System

scholarly journals Field Observation on Response of Topography around Tenryu River Mouth to Floods and Wave Action

2012 ◽  
Vol 68 (2) ◽  
pp. I_626-I_630
Author(s):  
Takaaki UDA ◽  
Toshiro SAN-NAMI ◽  
Toshinori ISHIKAWA ◽  
Norifusa SHIRAISHI ◽  
Jun-ichiro SATO
Keyword(s):  
Field Observation ◽  
River Mouth ◽  
Wave Action

scholarly journals Field Observation of Sand Movement around Submarine Canyon Offshore of Morito River Mouth

2009 ◽  
Vol 65 (1) ◽  
pp. 636-640
Author(s):  
Jun-ichi HOSOKAWA ◽  
Tomo SHIOIRI ◽  
Harumi TAKAO ◽  
Kazue AKITA ◽  
Takaaki UDA ◽  
...  
Keyword(s):  
Field Observation ◽  
River Mouth ◽  
Submarine Canyon ◽  
Sand Movement

scholarly journals Field Observation of Sand Bar Deformation and Hydrodynamics around the Tenryu River Mouth

2014 ◽  
Vol 70 (2) ◽  
pp. I_631-I_635
Author(s):  
Kengo YAMAMOTO ◽  
Yuya SASAKI ◽  
Hiroshi SANUKI ◽  
Takenori SHIMOZONO ◽  
Yoshimitu TAJIMA ◽  
...  
Keyword(s):  
Field Observation ◽  
River Mouth ◽  
Sand Bar

scholarly journals FIELD OBSERVATION OF SEASONAL VARIATION OF RIVER MOUTH BAR OF SMALL RIVERS FLOWING INTO PACIFIC OCEAN

2012 ◽  
Vol 68 (2) ◽  
pp. I_654-I_659
Author(s):  
Takashi OHNUKI ◽  
Akio KOBAYASHI ◽  
Takaaki UDA ◽  
Masumi SERIZAWA ◽  
Masatoshi ENDO ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Pacific Ocean ◽  
Field Observation ◽  
River Mouth ◽  
Small Rivers ◽  
Mouth Bar

scholarly journals ANALYSIS OF EROSION AND SEDIMENTATION PATTERNS USING SOFTWARE OF MIKE 21 HDFM-MT IN THE KAPUAS MURUNG RIVER MOUTH CENTRAL KALIMANTAN PROVINCE

2016 ◽  
Vol 27 (1) ◽  
pp. 35 ◽  
Author(s):  
Franto Novico ◽  
Yusuf Adam Priohandono
Keyword(s):  
Public Transportation ◽  
Field Observation ◽  
River Flow ◽  
River Mouth ◽  
Observation Data ◽  
Central Kalimantan ◽  
Software Analysis ◽  
Water Transportation ◽  
River Current ◽  
Mike 21

The public transportation system along the Kapuas River, Central Kalimantan are highly depend on water transportation. Natural condition gives high distribution to the smoothness of the vessel traffic along the Kapuas Murung River. The local government has planned to build specific port for stock pile at the Batanjung which would face with natural phenomena of sedimentation and erosion at a river mouth. Erosion and sedimentation could be predicted not only by field observing but it is also needed hypotheses using software analysis. Hydrodynamics and transport sediment models by Mike 21 HDFM-MT software will be applied to describe the position of sedimentations and erosions at a river mouth. Model is assumed by two different river conditions, wet and dry seasons. Based on two types of conditions the model would also describe the river flow and sediment transport at spring and neap periods. Tidal fluctuations and a river current as field observation data would be verified with the result of model simulations. Based on field observation and simulation results could be known the verification of tidal has an 89.74% correlation while the river current correlation has 43.6%. Moreover, based on the simulation the sediment patterns in flood period have a larger area than ebb period. Furthermore, the erosion patterns dominantly occur during wet and dry season within ebb period. Water depths and sediment patterns should be considered by the vessels that will use the navigation channel at a river mouth. Keywords: Kapuas Murung River, software Mike 21 HDFM-MT, erosion and sedimentation pattern Penduduk yang berada di sepanjang Sungai Kapuas sangat bergantung pada transportasi air. Kelancaran lalu lintas kapal di sepanjang Sungai Kapuas Murung sangat tergantung dengan kondisi alam yang terjadi. Rencana pemerintah daerah yang akan membangun pelabuhan khusus batubara di Batanjung akan berhadapan dengan fenomena alam yang umum terjadi di muara sungai yaitu sedimentasi dan erosi. Prediksi akan terjadinya sedimentasi dan erosi tidak hanya ditunjang pengamatan lapangan namun juga perlu dilakukan dengan melakukan hipotesa menggunakan bantuan analisis software. Penelitian ini akan menggambarkan posisi sedimentasi dan erosi di sekitar muara dengan pemodelan hidrodinamika dan transport sedimen yang menggunakan Software MIKE 21 HDFM-MT. Model dibuat dengan mengasumsikan kondisi sungai pada saat musim hujan dan musim kemarau. Berdasarkan dua kondisi tersebut model akan menggambarkan sebaran arus dan sebaran sedimen untuk periode bulan baru dan perbani. Data lapangan pasang surut dan kecepatan arus akan diverifikasi ke hasil simulasi model. Berdasarkan data hasil pengukuran lapangan dan data hasil simulasi model maka dapat diketahui bahwa verifikasi nilai pasang surut menunjukkan korelasi sebesar 89.74% sedangkan verifikasi nilai arus sebesar 43.6%. Selanjutnya dari hasil simulasi didapatkan bahwa pada saat pasang, gambaran posisi sedimentasi banyak terdapat pada bagian timur muara sungai dengan penyebaran cukup luas sedangkan pada kondisi surut area lebih sedikit. Selanjutnya gambaran daerah yang tererosi banyak terjadi pada saat air surut baik untuk musim hujan maupun kemarau. Kapal yang akan menggunakan muara sebagai alur pelayaran harus mempertimbangkan kondisi kedalaman air yang ada dan juga pola sedimentasi yang terjadi. Kata kunci: Sungai Kapuas Murung, software Mike 21FM HD-MT, erosi dan pola sedimentasi

scholarly journals FIELD OBSERVATION OF RIVER MOUTH BARS IN NAKATSU TIDAL FLAT IN VEIW OF APTITUDE OF SPAWNING SITE OF HORSESHOE CRAB TACHYPLEUS TRIDENTATUS

2001 ◽  
Vol 17 ◽  
pp. 375-380
Author(s):  
Satoquo SEINO ◽  
Takaaki UDA ◽  
Masataka SHIOZAKI ◽  
Takashi GOTO ◽  
Toshiyuki KUROKI ◽  
...  
Keyword(s):  
Tidal Flat ◽  
Field Observation ◽  
Horseshoe Crab ◽  
River Mouth ◽  
Tachypleus Tridentatus ◽  
Spawning Site ◽  
Mouth Bars

Flow Turbulence and Dispersion of Different Matter in the River Mouth

1993 ◽  
Vol 27 (7-8) ◽  
pp. 397-404 ◽  
Author(s):  
B. Shteinman ◽  
A. Gutman
Keyword(s):  
Turbulent Flow ◽  
Conceptual Model ◽  
River Mouth ◽  
Turbulent Energy ◽  
Lake Kinneret ◽  
Dispersion Coefficients ◽  
Energy Characteristics ◽  
Flow Turbulence

This work presents an investigation of the distribution of turbulent energy in the river mouth and its role in the transport of the matter within the flow. The experimental observations were performed in the River Jordan inflow into the Lake Kinneret. The results were generalized to formulate a conceptual model of the turbulent energy characteristics, specific for the river mouth. This model was extended to include the dispersion coefficients for turbulent flow downstream the river mouth.

scholarly journals Field Observation of Fine Sediment Resuspension Process at Tama River Mouth in Tokyo Bay

2008 ◽  
Vol 55 ◽  
pp. 516-520
Author(s):  
Yasuyuki NAKAGAWA ◽  
Ryuich ARIJI ◽  
Shoichi MATSUZAKA ◽  
Kazunobu MOROHOSHI ◽  
Hiroshi YAGI ◽  
...  
Keyword(s):  
Field Observation ◽  
Sediment Resuspension ◽  
River Mouth ◽  
Fine Sediment ◽  
Tokyo Bay
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