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Earthquake recurrence estimates for northern Caribbean faults from combinatorial optimization

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Woods Hole Coastal and Marine Science Center

2023 Annual Report

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Pragmatically mapping Phragmites with unoccupied aerial systems: A comparison of invasive species land cover classification using RGB and multispectral imagery

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Hydroacoustic observations reveal drivers of mixing and salinization of a karst subterranean estuary during intense precipitation

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

Featured Journal Article

Invasive Phragmites plants on the shore of a lake

Pragmatically mapping Phragmites with unoccupied aerial systems: A comparison of invasive species land cover classification using RGB and multispectral imagery

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Featured USGS Series

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Woods Hole Coastal and Marine Science Center—2023 Annual Report.  The 2023 annual report highlights accomplishments, includes a list of publications, and summarizes the work of the center and each of the science groups.

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Sound Waves

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Coastal and Marine Research News from Across the USGS

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Filter Total Items: 1737

Greenhouse gas emissions from diverse Arctic Alaskan lakes are dominated by young carbon Greenhouse gas emissions from diverse Arctic Alaskan lakes are dominated by young carbon

Climate-sensitive Arctic lakes have been identified as conduits for ancient permafrost-carbon (C) emissions and as such accelerate warming. However, the environmental factors that control emission pathways and their sources are unclear; this complicates upscaling, forecasting and climate-impact-assessment efforts. Here we show that current whole-lake CH4 and CO2 emissions from widespread...
Authors
Clayton D. Elder, Xiaomei Xu, Jennifer Walker, Jordan L. Schnell, Kenneth M. Hinkel, Amy Townsend-Small, Christopher D. Arp, John W. Pohlman, Benjamin V. Gaglioti, Claudia I. Czimzik
By
Woods Hole Coastal and Marine Science Center

The U.S. Geological Survey’s Gas Hydrates Project The U.S. Geological Survey’s Gas Hydrates Project

The Gas Hydrates Project at the U.S. Geological Survey (USGS) focuses on the study of methane hydrates in natural environments. The project is a collaboration between the USGS Energy Resources and the USGS Coastal and Marine Geology Programs and works closely with other U.S. Federal agencies, some State governments, outside research organizations, and international partners. The USGS...
Authors
Carolyn D. Ruppel
By
Woods Hole Coastal and Marine Science Center

Gas hydrate in nature Gas hydrate in nature

Gas hydrate is a naturally occurring, ice-like substance that forms when water and gas combine under high pressure and at moderate temperatures. Methane is the most common gas present in gas hydrate, although other gases may also be included in hydrate structures, particularly in areas close to conventional oil and gas reservoirs. Gas hydrate is widespread in ocean-bottom sediments at...
Authors
Carolyn D. Ruppel
By
Woods Hole Coastal and Marine Science Center

Polygons of global undersea features for geographic searches Polygons of global undersea features for geographic searches

A shapefile of 311 undersea features from all major oceans and seas has been created as an aid for retrieving georeferenced information resources. Geospatial information systems with the capability to search user-defined, polygonal geographic areas will be able to utilize this shapefile or secondary products derived from it, such as linked data based on well-known text representations of...
Authors
Stephen R. Hartwell, Dana K. Wingfield, Alan O. Allwardt, Frances L. Lightsom, Florence L. Wong
By
Woods Hole Coastal and Marine Science Center

Time-dependent pore filling Time-dependent pore filling

Capillarity traps fluids in porous media during immiscible fluid displacement. Most field situations involve relatively long time scales, such as hydrocarbon migration into reservoirs, resource recovery, nonaqueous phase liquid remediation, geological CO2 storage, and sediment‐atmosphere interactions. Yet laboratory studies and numerical simulations of capillary phenomena rarely consider...
Authors
Zhonghao Sun, Junbong Jang, J. Carlos Santamarina
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Exudation rates and δ13C signatures of tree root soluble organic carbon in a riparian forest Exudation rates and δ13C signatures of tree root soluble organic carbon in a riparian forest

Tree root exudation (TRE) of water soluble organic carbon (WSOC) is an important but under-assessed component of net primary production, and is thought to strongly influence rhizosphere biogeochemistry. Riparian systems in particular are often viewed as biogeochemical hot spots fueled partially by root exudate WSOC. However, TRE rates have not been previously reported for these systems...
Authors
S. W. Gougherty, J. E. Bauer, J. W. Pohlman
By
Woods Hole Coastal and Marine Science Center

Geomechanical analysis of initial stage of gas production from interbedded hydrate-bearing sediment Geomechanical analysis of initial stage of gas production from interbedded hydrate-bearing sediment

Geomechanical stability of marine hydrate reservoirs during gas production by depressurization is the focus of this study. The reservoir considered here consists of thin hydrate rich sandy layers interbedded with mud layers. Because of the input parameter uncertainties involved, it is prudent from a geomechanical perspective to estimate the likely bounds of potential responses. A...
Authors
Jeen-Shang Lin, Shun Uchida, Evgeniy Myshakin, Yongkoo Seol, Jonny Rutqvist, Ray Boswell, William F. Waite, Junbong Jang, Timothy S. Collett
By
Woods Hole Coastal and Marine Science Center

Methane- and dissolved organic carbon-fueled microbial loop supports a tropical subterranean estuary ecosystem Methane- and dissolved organic carbon-fueled microbial loop supports a tropical subterranean estuary ecosystem

Subterranean estuaries extend inland into density-stratified coastal carbonate aquifers containing a surprising diversity of endemic animals (mostly crustaceans) within a highly oligotrophic habitat. How complex ecosystems (termed anchialine) thrive in this globally distributed, cryptic environment is poorly understood. Here, we demonstrate that a microbial loop shuttles methane and...
Authors
D. Brankovits, John W. Pohlman, H. Niemann, M.B. Leigh, M.C. Leewis, K. W. Becker, T.M. Iliffe, Alvarez. F., M.F. Lehmann, B. Phillips
By
Woods Hole Coastal and Marine Science Center

Refining the formation and early evolution of the Eastern North American Margin: New insights from multiscale magnetic anomaly analyses Refining the formation and early evolution of the Eastern North American Margin: New insights from multiscale magnetic anomaly analyses

To investigate the oceanic lithosphere formation and early seafloor spreading history of the North Atlantic Ocean, we examine multiscale magnetic anomaly data from the Jurassic/Early Cretaceous age Eastern North American Margin (ENAM) between 31 and 40°N. We integrate newly acquired sea surface magnetic anomaly and seismic reflection data with publicly available aeromagnetic and...
Authors
John A. Greene, Masako Tominaga, Nathaniel C. Miller, Deborah Hutchinson, Matthew R. Karl
By
Woods Hole Coastal and Marine Science Center

Persistent shoreline shape induced from offshore geologic framework: Effects of shoreface connected ridges Persistent shoreline shape induced from offshore geologic framework: Effects of shoreface connected ridges

Mechanisms relating offshore geologic framework to shoreline evolution are determined through geologic investigations, oceanographic deployments, and numerical modeling. Analysis of shoreline positions from the past 50 years along Fire Island, New York, a 50 km long barrier island, demonstrates a persistent undulating shape along the western half of the island. The shelf offshore of...
Authors
Ilgar Safak, Jeffrey H. List, John C. Warner, William C. Schwab
By
Woods Hole Coastal and Marine Science Center

The role of deep-water sedimentary processes in shaping a continental margin: The Northwest Atlantic The role of deep-water sedimentary processes in shaping a continental margin: The Northwest Atlantic

The tectonic history of a margin dictates its general shape; however, its geomorphology is generally transformed by deep-sea sedimentary processes. The objective of this study is to show the influences of turbidity currents, contour currents and sediment mass failures on the geomorphology of the deep-water northwestern Atlantic margin (NWAM) between Blake Ridge and Hudson Trough...
Authors
David C. Mosher, D.C. Campbell, J.V. Gardner, D.J.W. Piper, Jason Chaytor, M. Rebesco
By
Woods Hole Coastal and Marine Science Center

Towards a comprehensive water quality modeling of Barnegat Bay: Development of ROMS to WASP Coupler Towards a comprehensive water quality modeling of Barnegat Bay: Development of ROMS to WASP Coupler

The Regional Ocean Modeling System (ROMS) has been coupled with the Water Quality Analysis Simulation Program (WASP) to be used in a comprehensive analysis of water quality in Barnegat Bay, New Jersey. The coupler can spatially aggregate hydrodynamic information in ROMS cells into larger WASP segments. It can also be used to resample ROMS output at a finer temporal scale to meet WASP...
Authors
Zafer Define, Frederick J. Spitz, Vincent T. DePaul, Tim A. Wool
By
New Jersey Water Science Center, Woods Hole Coastal and Marine Science Center
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