scholarly journals Active Ooid Growth Driven By Sediment Transport in a High-Energy Shoal, Little Ambergris Cay, Turks and Caicos Islands

2018 ◽  
Vol 88 (9) ◽  
pp. 1132-1151 ◽  
Author(s):  
Elizabeth J. Trower ◽  
Marjorie D. Cantine ◽  
Maya L. Gomes ◽  
John P. Grotzinger ◽  
Andrew H. Knoll ◽  
...  
Keyword(s):  
Sediment Transport ◽  
High Energy ◽  
Turks And Caicos Islands

scholarly journals 2D Sediment Transport Modelling in High Energy River – Application to Var River, France

2016 ◽  
Vol 154 ◽  
pp. 536-543 ◽  
Author(s):  
Elodie Zavattero ◽  
Mingxuan Du ◽  
Qiang Ma ◽  
Olivier Delestre ◽  
Philippe Gourbesville
Keyword(s):  
Sediment Transport ◽  
High Energy ◽  
Transport Modelling ◽  
Sediment Transport Modelling

Sediment Transport on a High-Energy Ebb-Tidal Delta

2001 ◽  
Author(s):  
Christopher R. Sherwood ◽  
Guy Gelfenbaum ◽  
Peter A. Howd ◽  
Margaret L. Palmsten
Keyword(s):  
Sediment Transport ◽  
High Energy ◽  
Ebb Tidal Delta

scholarly journals SEDIMENT TRANSPORT ON THE SOUTH-EAST AUSTRALIAN CONTINENTAL SHELF

1984 ◽  
Vol 1 (19) ◽  
pp. 131 ◽  
Author(s):  
Angus D. Gordon ◽  
John G. Hoffman
Keyword(s):  
Sediment Transport ◽  
Continental Shelf ◽  
Suspended Sediment ◽  
Transport System ◽  
Sediment Concentration ◽  
High Energy ◽  
Sediment Distribution ◽  
Sediment Movement ◽  
Shelf Sediment ◽  
Sea Bed

Engineering projects on the continental shelf off Sydney, Australia, have stimulated investigation into the sediment transport system of the shelf. Investigation activities associated with these projects have included: definition of sea bed morphology, sediment distribution and bedform characteristics; monitoring of steady and wave induced currents; wind data collection; suspended sediment sampling; bottom camera sediment movement investigations and analytical studies of sediment reaction to sea bed forcing functions. Sea bed velocity exceedence relationships for both wave oscillations and steady currents have been determined at depths of 24 m, 60 m and 80 m. Thresholds of sediment movement have been defined. Relative sediment transport computations have been undertaken and studies of suspended sediment concentration profiles are in progress so that absolute transport rates can be determined. The prevailing conditions, which include a mainly south bound current, are seldom sufficient to induce entrainment of shelf sediments. Transport events mainly result from major storms in the Tasman Sea which produce both high energy waves and north bound currents. Although these events are rare and short lived, the combined wave and current shear produced at the sea bed during the events gives rise to entrainment conditions which result in their dominance of the shelf sediment transport system.

Climate change impact on NW Shelf seabed evolution and its implication for offshore pipeline design

2008 ◽  
Vol 48 (1) ◽  
pp. 171 ◽  
Author(s):  
Fangjun Li ◽  
Cedric Griffiths ◽  
Tristan Salles ◽  
Chris Dyt ◽  
Ming Feng ◽  
...  
Keyword(s):  
Climate Change ◽  
Sediment Transport ◽  
High Energy ◽  
Change Scenario ◽  
Seabed Sediment ◽  
Impact Of Climate Change ◽  
Offshore Pipeline ◽  
Pipeline Design ◽  
The Impact

In this paper, the impact of climate change on seabed sediment transport in the north-western region of the Australian Exclusive Economic Zone (EEZ) has been investigated by a state-of-the-art numerical sediment transport model, Sedsim. It links the environmental forces and seabed response into a dynamic sedimentation system. Although numerical implementation of some forcing and responses is approximate, it is a significant step forward in understanding the nature of potential long-term seabed changes as well as in evaluating the likely impact of climate change on the northwest Australian continental shelf. It was found that: the modelled high-energy climate change scenario produced 17% and 38% increases on total volumes of seabed transport in the northern and southern part of the Australian northwest region respectively; the Indonesian ThroughFlow (ITF), the Leeuwin Current (LC) and high energy waves (associated with tropical cyclones) play the most important roles in large-scale long-term evolution of the NW seafloor; offshore pipeline design could usefully incorporate the changed risk profiles due to long-term non-stationarity of climate-derived forcing processes.

scholarly journals Storm-driven bottom sediment transport on a high-energy narrow shelf (NW Iberia) and development of mud depocenters

2016 ◽  
Vol 121 (8) ◽  
pp. 5751-5772 ◽  
Author(s):  
Wenyan Zhang ◽  
Yongsheng Cui ◽  
Ana I. Santos ◽  
Till J. J. Hanebuth
Keyword(s):  
Sediment Transport ◽  
Bottom Sediment ◽  
High Energy ◽  
Nw Iberia

Sediment transport by shallow flows impacted by pulsed artificial rainfall

Soil Research ◽  
1993 ◽  
Vol 31 (2) ◽  
pp. 199 ◽  
Author(s):  
PIA Kinnell
Keyword(s):  
Sediment Transport ◽  
Soil Erosion ◽  
High Intensity ◽  
Influence Factors ◽  
High Energy ◽  
Sediment Discharge ◽  
Natural Conditions ◽  
Artificial Rainfall ◽  
Shallow Flows

In many experiments using rainfall simulators, rainfall is applied to the target as a high intensity pulse so that there are often long periods when the soil receives no rain and there are short periods when the soil receives rain at an extremely high intensity. Because concerns exist about the use of such methods of applying rain in experiments designed to help predict erosion under natural conditions, experiments using intermittent and continuous artificial rainfall were performed and analysed in terms of a recently developed theory on erosion by rain-impacted flow. The results indicate that the manner in which the rain is applied does not significantly influence the time-averaged sediment discharge from the sediment transport perspective. However, if high intensity, high energy pulses of rain influence factors which affect the susceptibility of the soil to erosion differently to continuous rain, then concerns about the use of intermittent rainfall in soil erosion experiments remain.

scholarly journals LITTORAL TRANSPORT MODELING FOR OCEAN BEACH AND SAN FRANCISCO BIGHT, CALIFORNIA

2012 ◽  
Vol 1 (33) ◽  
pp. 59
Author(s):  
Lihwa Lin ◽  
Honghai Li ◽  
Frank Wu ◽  
Lisa Andes
Keyword(s):  
Sediment Transport ◽  
San Francisco ◽  
Beach Nourishment ◽  
High Energy ◽  
Water Levels ◽  
Dredged Material ◽  
Modeling Effort ◽  
Beneficial Use ◽  
Us Army ◽  
The Us

This paper presents the littoral sediment transport numerical modeling effort of simulating physical processes of high energy coastline, including inlet and coastal zone, at Ocean Beach and San Francisco Bight, California. The study site is dominated by strong tidal current and breaking wave-induced longshore current. The numerical models for waves, currents, water levels, and sediment transport are provided by the Coastal Modeling System developed at the US Army Engineer Research and Development Center. The water level, current, wave, sediment, and bathymetric data collected by the US Army Engineer District, San Francisco, and USGS in recent years are assembled and utilized for model calibration and validation. One main effort of the study is to demonstrate the beneficial use of dredged clean material from the ship channel maintenance for onshore beach nourishment and nearshore berm placement at Ocean Beach to remediate the chronicle erosion threatening the structural integrity of the adjacent Great Highway. The modeling effort is intended to guide future dredging activities, dredged material placement site selection and evaluation, beneficial use of dredged material for nearshore and onshore beach nourishment for shore and beach protection. The model result can support and improve decision making for regional and local sediment management, enhance cross-mission benefit, and ultimately reduce the dredging project life-cycle costs.

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