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Scientific literature and information products produced by Woods Hole Coastal and Marine Science Center staff

Filter Total Items: 1737

Automated feature extraction and spatial organization of seafloor pockmarks, Belfast Bay, Maine, USA Automated feature extraction and spatial organization of seafloor pockmarks, Belfast Bay, Maine, USA

Seafloor pockmarks occur worldwide and may represent millions of m3 of continental shelf erosion, but few numerical analyses of their morphology and spatial distribution of pockmarks exist. We introduce a quantitative definition of pockmark morphology and, based on this definition, propose a three-step geomorphometric method to identify and extract pockmarks from high-resolution swath...
Authors
Brian D. Andrews, Laura L. Brothers, Walter A. Barnhardt

Predicting coastal cliff erosion using a Bayesian probabilistic model Predicting coastal cliff erosion using a Bayesian probabilistic model

Regional coastal cliff retreat is difficult to model due to the episodic nature of failures and the along-shore variability of retreat events. There is a growing demand, however, for predictive models that can be used to forecast areas vulnerable to coastal erosion hazards. Increasingly, probabilistic models are being employed that require data sets of high temporal density to define the...
Authors
Cheryl J. Hapke, Nathaniel G. Plant

Extension in Mona Passage, Northeast Caribbean Extension in Mona Passage, Northeast Caribbean

As shown by the recent Mw 7.0 Haiti earthquake, intra-arc deformation, which accompanies the subduction process, can present seismic and tsunami hazards to nearby islands. Spatially-limited diffuse tectonic deformation within the Northeast Caribbean Plate Boundary Zone likely led to the development of the submerged Mona Passage between Puerto Rico and the Dominican Republic. GPS geodetic...
Authors
J.D. Chaytor, Uri S. ten Brink

The national assessment of shoreline change: A GIS compilation of vector shorelines and associated shoreline change data for the New England and Mid-Atlantic Coasts The national assessment of shoreline change: A GIS compilation of vector shorelines and associated shoreline change data for the New England and Mid-Atlantic Coasts

Sandy ocean beaches are a popular recreational destination, often surrounded by communities containing valuable real estate. Development is on the rise despite the fact that coastal infrastructure is subjected to flooding and erosion. As a result, there is an increased demand for accurate information regarding past and present shoreline changes. The U.S. Geological Survey's National...
Authors
Emily A. Himmelstoss, Meredith G. Kratzmann, Cheryl Hapke, E. Robert Thieler, Jeffrey List

The tail of the Storegga Slide: Insights from the geochemistry and sedimentology of the Norwegian Basin deposits The tail of the Storegga Slide: Insights from the geochemistry and sedimentology of the Norwegian Basin deposits

Deposits within the floor of the Norwegian Basin were sampled to characterize the deposition from the Storegga Slide, the largest known Holocene-aged continental margin slope failure complex. A 29 to 67 cm thick veneer of variable-coloured, finely layered Holocene sediment caps a homogeneous, extremely well-sorted, poorly consolidated, very fine-grained, grey-coloured sediment section...
Authors
C. K. Paull, W. Ussler, W.S. Holbrook, T.M. Hill, H. Haflidason, W. Winters, T. Lorenson, I. Aiello, J.E. Johnson, E. Lundsten

The release of dissolved nutrients and metals from coastal sediments due to resuspension The release of dissolved nutrients and metals from coastal sediments due to resuspension

Coastal sediments in many regions are impacted by high levels of contaminants. Due to a combination of shallow water depths, waves, and currents, these sediments are subject to regular episodes of sediment resuspension. However, the influence of such disturbances on sediment chemistry and the release of solutes is poorly understood. The aim of this study is to quantify the release of...
Authors
Linda H. Kalnejais, William R. Martin, Michael H. Bothner

Regional seismic stratigraphy and controls on the Quaternary evolution of the Cape Hatteras region of the Atlantic passive margin, USA Regional seismic stratigraphy and controls on the Quaternary evolution of the Cape Hatteras region of the Atlantic passive margin, USA

Seismic and core data, combined with amino acid racemization and strontium-isotope age data, enable the definition of the Quaternary stratigraphic framework and recognition of geologic controls on the development of the modern coastal system of North Carolina, U.S.A. Seven regionally continuous high amplitude reflections are defined which bound six seismic stratigraphic units consisting...
Authors
D. J. Mallinson, S.J. Culver, S.R. Riggs, E.R. Thieler, D. Foster, J. Wehmiller, K.M. Farrell, J. Pierson

Serving ocean model data on the cloud Serving ocean model data on the cloud

The NOAA-led Integrated Ocean Observing System (IOOS) and the NSF-funded Ocean Observatories Initiative Cyberinfrastructure Project (OOI-CI) are collaborating on a prototype data delivery system for numerical model output and other gridded data using cloud computing. The strategy is to take an existing distributed system for delivering gridded data and redeploy on the cloud, making...
Authors
Michael Meisinger, Claudiu Farcas, Emilia Farcas, Charles Alexander, Matthew Arrott, Jeff de La Beaujardiere, Paul Hubbard, Roy Mendelssohn, Richard P. Signell

Standard-target calibration of an acoustic backscatter system Standard-target calibration of an acoustic backscatter system

The standard-target method used to calibrate scientific echo sounders and other scientific sonars by a single, solid elastic sphere is being adapted to acoustic backscatter (ABS) systems. Its first application, to the AQUAscat 1000, is described. The on-axis sensitivity and directional properties of transducer beams at three operating frequencies, nominally 1, 2.5, and 4 MHz, have been...
Authors
Kenneth G. Foote, Marinna A. Martini

Parametric study of the physical properties of hydrate-bearing sand, silt, and clay sediments: 1. Electromagnetic properties Parametric study of the physical properties of hydrate-bearing sand, silt, and clay sediments: 1. Electromagnetic properties

The marked decrease in bulk electrical conductivity of sediments in the presence of gas hydrates has been used to interpret borehole electrical resistivity logs and, to a lesser extent, the results of controlled source electromagnetic surveys to constrain the spatial distribution and predicted concentration of gas hydrate in natural settings. Until now, an exhaustive laboratory data set...
Authors
J.Y. Lee, J.C. Santamarina, C. Ruppel

Complexities in barrier island response to sea level rise: Insights from numerical model experiments, North Carolina Outer Banks Complexities in barrier island response to sea level rise: Insights from numerical model experiments, North Carolina Outer Banks

Using a morphological-behavior model to conduct sensitivity experiments, we investigate the sea level rise response of a complex coastal environment to changes in a variety of factors. Experiments reveal that substrate composition, followed in rank order by substrate slope, sea level rise rate, and sediment supply rate, are the most important factors in determining barrier island...
Authors
Laura J. Moore, Jeffrey H. List, S. Jeffress Williams, David Stolper
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