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Showing 1 to 15 of 15 for “"Sediment Volume"”.
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Response and Recovery of Horn and Petit Bois Islands, Mississippi, USA to Tropical Cyclone Impacts: 2004 – 2016
… September 2004, Hurricane Ivan removed a large volume of sediment from the eastern ends of Horn and Petit Bois islands with its 1-2 m storm surge and ~194 kph wind speeds. Then, in August 2005 Hurricane Katrina severely impacted the two islands again with its 3.5-5.5 m storm surge on Horn and …
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Distribution of post-Last Glacial Maximum Sedimentary Deposits in the Amundsen Sea, Antarctica, from Subbottom Seismic Profiles
… the austral summers of 2019 and 2020 reveal sediment that has been delivered from two major glaciers: Thwaites and Pine Island. Sediments transported by Thwaites and Pine Island Glaciers have predominantly been studied through analysis of sediment cores which have been collected in specific …
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The morphodynamics of a sand and gravel barrier, Southern Hawke Bay, North Island, New Zealand
… the profile parameters (beach height, width, sediment volume and 'Profile Index') do not have normal distributions and can be highly skewed. The profile index parameter indicates the beachfaces are restricted to concave up and linear shapes. Consecutive cross shore profile surveys demonstrate …
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Small-Scale Resuspension and Redistribution of Surface Sediments in the Northeast Gulf of Mexico
… the seafloor contained recently deposited marine sediments contaminated by the oil spill. The initial deposition of these contaminated marine sediments was likely not the end of the journey for the particles. Downslope gravitational processes and events of increased current speed in the deep ocean …
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Evaluating Interferometric Synthetic Aperture Radar Coherence for Coastal Geomorphological Changes
… of the beach and dune system in terms of sediment volume analysis, erosion and accretion processes and shoreline changes over a short-term period of 4 years. The interferometric coherence was applied to detect changes to the dune morphology, which have been actively eroding at the southern …
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Keeping Pace with Relative Sea Level Rise: Marsh Platform Monitoring Shows Minimal Sediment Deficit along the Louisiana Coast
… of the Mississippi Delta receive just 30% of the sediment necessary to sustain current land area1. An extensive monitoring campaign by the USGS and LCPRA provides direct measurements of sediment accumulation, subsidence rates, and deposit characteristics along the coast over the past 10 years2, …
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Application of Remote Sensing Techniques for the Study of Neotectonic Deformation, Subsidence and Coastal Processes
… change in the form of shoreline retreat and sediment erosion reduces the protective influence of barrier islands and their beach-dune systems. I conducted an uncrewed aerial vehicle (UAV) survey at these two sites and collected sediment samples for grain size analysis. Using the UAV data, I …
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An integrated modal approach to surface and volume scattering in ocean acoustic waveguides
… ocean properties, including rough surfaces and volume fluctuations in the ocean or seabed. Such inhomogeneities scatter part of the incident acoustic field, stripping energy from the coherent part of the field. This scattered energy, or reverberation, propagates further in the modes of the ocean …
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Long and Short-Term Morphologic Evolution and Stratigraphic Architecture of a Transgressive Tidal Inlet, Little Pass Timbalier, Louisiana
… a post-storm bathymetric survey was conducted. A sediment volume change analysis determined that 10.6 x 106 m3 of sediment were removed from the study area. Vibracores and subbottom profiles taken along the inlet retreat path at locations where relic channel depth was determined to be deeper than …
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Exploring the Surface Liquid and Lake Regions of Titan with Laboratory Experimentation and Cassini Spacecraft Data
… channels and tributaries are reported, and the sediment volume that has flowed into Ligeia through time is estimated.</p>
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Assessing Dynamic Seabed Change on the Scottish Continental Shelf
The dynamics of sediment bedforms mobilised by modern day coastal fluid mechanics can reduce the lifespan of offshore construction by modifying the foundational stability for offshore projects such as wind turbines and subsea cables. Dunes represent wave-like bedforms that range in size and …
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A Comparison of Spatial Interpolation Techniques for Determining Shoaling Rates of the Atlantic Ocean Channel
… shoaling amounts, which are taken in the form of volumes (yd.³). Because the Atlantic Ocean Channel is a large channel with a small gradual change in depth, a comparison of grid resolution was conducted to determine what difference, if any, exists between the calculated volumes from varying grid …
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Evaluation of various products for sediment perimeter barrier
… erosion, a best management practice known as a sediment perimeter barrier (SPB) or a sediment retention device is implemented. Several products have been designed for use as SPBs, the most common of which is silt fence. However, many of these products have not been tested for their relative …
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Accumulation of sediment and radionuclides in tidal marshes of the Murderkill River Estuary, Delaware
This thesis examines patterns and rates of sediment accumulation and tidal marsh accretion in the Murderkill River estuary, Delaware, with special emphasis placed on changes in accumulation rates and sediment physical properties associated with historical land-use practices, such as mosquito …
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Intermontane valley fills
Sedimentary valley fills are a widespread characteristic of mountain belts around the world. They transiently store material over time spans ranging from thousands to millions of years and therefore play an important role in modulating the sediment flux from the orogen to the foreland and to …