Publications
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USGS Publications Warehouse
USGS Publications Warehouse
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Sound Waves Newsletter
Sound Waves Newsletter
Browse issues of Sound Waves, featuring USGS coastal and marine research news.
Filter Total Items: 1739
Hydrologic controls of methane dynamics in karst subterranean estuaries Hydrologic controls of methane dynamics in karst subterranean estuaries
Karst subterranean estuaries (KSEs) extend into carbonate platforms along 12% of all coastlines. A recent study has shown that microbial methane (CH4) consumption is an important component of the carbon cycle and food web dynamics within flooded caves that permeate KSEs. In this study, we obtained high‐resolution (~2.5‐day) temporal records of dissolved methane concentrations and its...
Authors
David Brankovits, John W. Pohlman, Neil K. Ganju, T.M. Iliffe, N. Lowell, E. Roth, S.P. Sylva, J.A. Emmert, L. L. Lapham
Unmanned aerial systems capabilities of the U.S. Geological Survey Woods Hole Coastal and Marine Science Center Unmanned aerial systems capabilities of the U.S. Geological Survey Woods Hole Coastal and Marine Science Center
Unmanned aerial system (UAS) technology provides a rapid and low-cost solution for mapping coastal environments and assessing short- and long-term changes. The interdisciplinary nature of the data collected and the breadth of applications make UAS technology applicable to multiple scientific investigations. The Aerial Imaging and Mapping (AIM) group at the U.S. Geological Survey (USGS)...
Authors
Sandra Brosnahan, Christopher R. Sherwood
Uncertainty in United States coastal wetland greenhouse gas inventorying Uncertainty in United States coastal wetland greenhouse gas inventorying
Coastal wetlands store carbon dioxide (CO2) and emit CO2 and methane (CH4) making them an important part of greenhouse gas (GHG) inventorying. In the contiguous United States (CONUS), a coastal wetland inventory was recently calculated by combining maps of wetland type and change with soil, biomass, and CH4 flux data from a literature review. We assess uncertainty in this developing...
Authors
James Holmquist, Lisamarie Windham-Myers, Blanca Bernal, Kristin B. Byrd, Steve Crooks, Meagan Gonneea Eagle, Nathan Herold, Sara Knox, Kevin D. Kroeger, John McCombs, J. Patrick Megonigal, Lu Meng, James Morris, Ariana Sutton-Grier, Tiffany Troxler, Donald Weller
Contribution of hurricane-induced sediment resuspension to coastal oxygen dynamics Contribution of hurricane-induced sediment resuspension to coastal oxygen dynamics
Hurricanes passing over the ocean can mix the water column down to great depths and resuspend massive volumes of sediments on the continental shelves. Consequently, organic carbon and reduced inorganic compounds associated with these sediments can be resuspended from anaerobic portions of the seabed and re-exposed to dissolved oxygen (DO) in the water column. This process can drive DO...
Authors
Laura Bianucci, Karthik Balaguru, Richard W. Smith, Ruby Leung, Julia M. Moriarty
Natural climate solutions for the United States Natural climate solutions for the United States
Limiting climate warming to
Authors
Joseph E. Fargione, Steven Bassett, Timothy Boucher, Scott D. Bridgham, Richard T. Conant, Susan C. Cook-Patton, Peter W. Ellis, Alessandra Falcucci, James W. Fourqurean, Trisha Gopalakrishna, Huan Gu, Benjamin Henderson, Matthew D. Hurteau, Kevin D. Kroeger, Timm Kroeger, Tyler J. Lark, Sara M. Leavitt, Guy Lomax, Robert I. McDonald, Patrick Megonigal, Daniela A. Miteva, Curtis J. Richardson, Jonathan Sanderman, David Shoch, Seth A. Spawn, Joseph W. Veldman, Christopher A. Williams, Peter B. Woodbury, Chris Zganjar, Marci Baranski, Patricia Elias, Richard A. Houghton, Emily Landis, Emily McGlynn, William H. Schlesinger, Juha V. Siikamaki, Ariana Sutton-Grier, Bronson W. Griscom
Blue carbon as a tool to support coastal management and restoration: Bringing wetlands to market case study Blue carbon as a tool to support coastal management and restoration: Bringing wetlands to market case study
A collaborative research approach involving substantial end user and stakeholder engagement was applied to great effect to guide broad, integrated investigation of the science, policy, and management of blue carbon and carbon markets as drivers for coastal wetland management and restoration. Expanding awareness about blue carbon concepts among local, state, and federal agencies and the...
Authors
Tonna-Marie Surgeon-Rogers, Kevin D. Kroeger, Meagan Gonneea Eagle, Omar I. Abdul-Aziz, Jianwu Tang, Serena Moseman-Valtierra
India National Gas Hydrate Program Expedition 02 summary of scientific results: Evaluation of natural gas hydrate-bearing pressure cores India National Gas Hydrate Program Expedition 02 summary of scientific results: Evaluation of natural gas hydrate-bearing pressure cores
India’s National Gas Hydrate Program (NGHP) Expedition-02 was conducted in 2015 with the goal of investigating numerous locations that had been determined to be prospective for gas hydrate at high saturation in sand-rich reservoirs. Initial logging while drilling data revealed extensive sand-rich gas hydrate occurrences at multiple drill sites in two broad areas. These sites were further
Authors
R. Boswell, J. Yoneda, William F. Waite
An intercomparison of oceanic methane and nitrous oxide measurements An intercomparison of oceanic methane and nitrous oxide measurements
Large-scale climatic forcing is impacting oceanic biogeochemical cycles and is expected to influence the water-column distribution of trace gases, including methane and nitrous oxide. Our ability as a scientific community to evaluate changes in the water-column inventories of methane and nitrous oxide depends largely on our capacity to obtain robust and accurate concentration...
Authors
Samuel Wilson, Hermann Bange, Damian Arevalo-Martinez, Jonathan Barnes, Alberto V. Borges, Ian Brown, John Bullister, Macarena Burgos, David Capelle, Michael Casso, Mercedes de la Paz, Laura Farias, Lindsay Fenwick, Sara Ferron, Gerardo Garcia, MIchael Glockzin, David Karl, Annette Kock, Sarah Laperriere, Cliff S. Law, Cara Manning, Andrew Marriner, Jukka-Pekka Myllykangas, John Pohlman, Andrew Rees, Allison Santoro, Philippe Tortll, Robert C. Upstill-Goddard, David Wisegarver, Gui-Ling Zhang, Gregor Rehder
Salt marsh loss affects tides and sediment budget in shallow bays Salt marsh loss affects tides and sediment budget in shallow bays
The current paradigm is that salt marshes and their important ecosystem services are threatened by global climate change; indeed, large marsh losses have been documented worldwide. Morphological changes associated with salt marsh erosion are expected to influence the hydrodynamics and sediment dynamics of coastal systems. Here the influence of salt marsh erosion on the tidal...
Authors
Carmine Donatelli, Neil K. Ganju, Xiaohe Zhang, Sergio Fagherazzi, Nicoletta Leonardi
Deciphering the dynamics of inorganic carbon export from intertidal salt marshes using high-frequency measurements Deciphering the dynamics of inorganic carbon export from intertidal salt marshes using high-frequency measurements
The lateral export of carbon from coastal marshes via tidal exchange is a key component of the marsh carbon budget and coastal carbon cycles. However, the magnitude of this export has been difficult to accurately quantify due to complex tidal dynamics and seasonal cycling of carbon. In this study, we use in situ, high-frequency measurements of dissolved inorganic carbon (DIC) and water...
Authors
Sophie N. Chu, Zhaohui Aleck Wang, Meagan Gonneea Eagle, Kevin D. Kroeger, Neil K. Ganju
Passive experimental warming decouples air and sediment temperatures in a salt marsh Passive experimental warming decouples air and sediment temperatures in a salt marsh
Open top chambers (OTCs) are a commonly used passive warming technique in experimental warming studies. OTCs have been shown to be effective in multiple types of terrestrial systems, but their utility in wetland environments remains uncertain. The objective of this work was to evaluate the effectiveness of using OTCs to warm a temperate salt marsh across diurnal and seasonal cycles. We...
Authors
Joanna C. Carey, Kevin D. Kroeger, Babak Zafari, Jianwu Tang
Advantages and limitations to the use of optical measurements to study sediment properties Advantages and limitations to the use of optical measurements to study sediment properties
Measurements of optical properties have been used for decades to study particle distributions in the ocean. They are useful for estimating suspended mass concentration as well as particle-related properties such as size, composition, packing (particle porosity or density), and settling velocity. Measurements of optical properties are, however, biased, as certain particles, because of...
Authors
Emmanuel Boss, Christopher R. Sherwood, Paul Hill, Tim Milligan