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Scientific reports, journal articles, and information products produced by USGS Pacific Coastal and Marine Science Center scientists.
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Filter Total Items: 1452
Hydrothermal manganese-oxide mineralization of a carbonate ooze, Samoan hotspot region, South Pacific Ocean Hydrothermal manganese-oxide mineralization of a carbonate ooze, Samoan hotspot region, South Pacific Ocean
Low-temperature hydrothermal manganese oxides occur throughout the global oceans. However, the hydrothermal replacement of a carbonate ooze by manganese oxides is described here for the first time. The 24 samples dredged from three locations around the Territory of American Samoa in the South Pacific Ocean include six samples with remnant carbonate and volcaniclastic sediments, which we...
Authors
James R. Hein, Amy Gartman, Kira Mizell, Mark Baskaran, Anthony Koppers, Hubert Staudigel
Widespread landslide activity in an extreme wet season and implications for regional sediment management, eastern San Francisco Bay area, California Widespread landslide activity in an extreme wet season and implications for regional sediment management, eastern San Francisco Bay area, California
Watershed sediment production is expected to increase in a warmer future with more extreme rain, with cascading effects throughout drainage and sediment-transport networks. This study investigated landscape-scale sediment movement in the eastern San Francisco Bay area, California, USA, during the extreme 2016–2017 wet season that brought major rainfall, landslides, and flooding. Mapping...
Authors
Amy E. East, Amy Foxgrover, Skye C. Corbett, Brian D. Collins, Andrew C. Ritchie
The Great Salt Lake (Utah, USA) acoustic and sedimentary archive of Wasatch Front earthquakes The Great Salt Lake (Utah, USA) acoustic and sedimentary archive of Wasatch Front earthquakes
As the largest low-relief basin in the western United States, the Great Salt Lake offers an opportunity to explore acoustic and sedimentary archives of earthquake ruptures in a shallow terminal basin. Here, we use subbottom compressed high intensity radiated pulse (Chirp) profiles and sedimentary cores to address questions related to how Great Salt Lake sediments respond to surface...
Authors
Christopher B. DuRoss, Daniel S. Brothers, Jessica A. Thompson Jobe, Richard Briggs, Drake Moore Singleton, Sylvia R. Nicovich, Alan Nelson, Jared W. Kluesner, Jason Scott Padgett
Shoreline behavior at California groin fields from satellite-based measurements Shoreline behavior at California groin fields from satellite-based measurements
Satellite imagery has helped to provide decades of shoreline change data to coastal regions all over the world. Although shorelines around the globe have been armored with different types of coastal structures to try and protect beaches and properties from erosion, there are few studies of shoreline dynamics within structures such as groin fields using satellite images. Here we apply...
Authors
Catherine N. Janda, Teresa Hachey, Sharon Batiste, Mark A. Lundine, Daniel D. Buscombe, Jonathan A. Warrick
Cruise summary—Samoa Basin abyssal mapping—Box coring leg, Pago Pago, Territory of American Samoa to Pago Pago, American Samoa, April 11– May 1, 2026 Cruise summary—Samoa Basin abyssal mapping—Box coring leg, Pago Pago, Territory of American Samoa to Pago Pago, American Samoa, April 11– May 1, 2026
Authors
Amy Gartman, Katlin Bowman Adamczyk, Jason A. Addison, Jill R. Bourque, Beth E. Caissie, Caroline Sarah Caron, Amanda W. Demopoulos, Jaycee Favela, Hope Lee Ianiri, Daniel Charles Powers, Nancy G. Prouty, Jane Anne Rudebusch, Isabelle M. Shapiro
Tectonic controls on volcanism and associated hydrothermal activity in a sediment-dominated mid-ocean ridge; Escanaba Trough Tectonic controls on volcanism and associated hydrothermal activity in a sediment-dominated mid-ocean ridge; Escanaba Trough
Mid-ocean ridges, the Earth's most extensive volcanic system, exhibit unique characteristics in sediment-dominant environments. Thick sediment cover insulates the crust and channels fluid along pathways that can lead to the formation of distinct crustal alteration patterns, exceptionally large mineral deposits, and specialized chemosynthetic ecosystems. This study presents an...
Authors
Chris Galley, John Jamieson, Amy Gartman, Isobel Yeo, Masako Tominaga, Maurice Tivey, Carlos Braga, Laura Moore, Sharon Walker
Loss and transformation of coastal wetlands due to global change in the conterminous United States: Past, present, and future Loss and transformation of coastal wetlands due to global change in the conterminous United States: Past, present, and future
Coastal wetlands are being transformed by global change, impacting the ecological and societal benefits provided by these ecosystems. Synthesizing knowledge of historical and expected future transformations in coastal wetlands can help inform forward-looking planning and stewardship efforts. Here, we review anticipated future ecological transformations in coastal wetlands of the...
Authors
Michael J. Osland, Bogdan Chivoiu, Kevin J. Buffington, Kristin Byrd, Joel Carr, Judith Z. Drexler, Nicholas Enwright, Neil K. Ganju, James B. Grace, Eric E. Grossman, Glenn R. Guntenspergen, Kurt P. Kowalski, Ken W. Krauss, Jessica R. Lacy, Gregory B. Noe, Davina L. Passeri, Stephanie Romanach, Christopher F. Smith, Camille L. Stagg, Karen M. Thorne, Janet R. Keough
By
Ecosystems Mission Area, Water Resources Mission Area, Coastal and Marine Hazards and Resources Program, California Water Science Center, Eastern Ecological Science Center, Great Lakes Science Center, Pacific Coastal and Marine Science Center, St. Petersburg Coastal and Marine Science Center, Western Ecological Research Center (WERC), Wetland and Aquatic Research Center , Woods Hole Coastal and Marine Science Center
Morphodynamic controls on the performance of dune-based coastal flood mitigation under sea-level rise Morphodynamic controls on the performance of dune-based coastal flood mitigation under sea-level rise
Dune-based adaptation is increasingly used as a nature-based solution for coastal flood mitigation, yet many assessments rely on hydrodynamic-only approaches that treat beach and dune morphology as static, neglecting storm-driven erosion that can degrade dune performance during extreme events. This study develops a process-based modeling framework coupling extreme value analysis of...
Authors
Zhengtong Yang, Natalia Herran, David Gutierrez-Barcelo, Li Erikson, Sean Vitousek, Borja Reguero
Samoa basin abyssal mapping: Box coring leg Samoa basin abyssal mapping: Box coring leg
This cruise report describes work from leg three of the NOAA American Samoa Abyssal Mapping effort, OPR-T900-KR-26. Leg one preceded this effort and collected ship-based acoustic data. Leg two collected autonomous underwater vehicle (AUV) data and began before, continued contemporaneously, and finished subsequently to leg three. The USGS field activity number assigned to this expedition...
Authors
Amy Gartman, Katlin Bowman Adamczyk, Jason A. Addison, Jill Bourque, Beth E. Caissie, Caroline Sarah Caron, Amanda J. Demopoulos, Jaycee Favela, Hope Lee Ianiri, Daniel Charles Powers, Nancy G. Prouty, Jane Anne Rudebusch, Isabelle M. Shapiro
Waves, watersheds, and sediment in a coral reef embayment: Towards parsimonious models of accumulation and composition Waves, watersheds, and sediment in a coral reef embayment: Towards parsimonious models of accumulation and composition
High sedimentation rates can damage coral reef ecosystems. Sedimentation rates are controlled by both sediment loads from watersheds and resuspension by waves and associated circulation patterns, but the outcomes are system specific and difficult to predict. The percent terrigenous (non-organic and non-carbonaceous) material in sediment is also often used as an indicator of watershed...
Authors
Trent Biggs, Alex Messina, Curt D. Storlazzi
CoralCache: A virtual coral core repository for transparent and reproducible annual growth rate analyses CoralCache: A virtual coral core repository for transparent and reproducible annual growth rate analyses
As science fields enter the Big Data revolution, open-access repositories are essential for addressing larger-scale questions than are possible for single researchers by making data findable, accessible, interoperable, and reusable (FAIR). Furthermore, transparent data and code are increasingly important for reproducible research, especially for data types that inherently require...
Authors
Thomas M. DeCarlo, Oliwia Jasnos, Avi Strange, Andreas Andersson, Angel T. Bautista VII, Sierra Kathleen Bloomer, Isaiah W. Bolden, Maartje Bosman, Thomas Brachert, Giulia B. Braz, Gabriel O. Cardoso, J. P. Carricart-Ganivet, Jessica E. Carilli, Karl D. Castillo, Leticia Cavole, Sylvia Chan, Xuefei Chen, Ben Chomitz, Thierry Correge, Travis A. Courtney, Mikayla Diegan, Juan Pablo D'Olivio, Rob Dunbar, Ian C. Enochs, Ludmilla Falsarella, Thomas Felis, Gabriela Gutierrez-Estrada, Brighton Hedger, Shijian Hu, Seamus Jameson, Stacy D. Jupiter, Paul Kench, Diego Kersting, Ke Lin, Kerstin Lindblad-Toh, Yi-Wei Liu, Carla A. Lorigados, Derek P. Manzello, Malcolm T. McCulloch, Miguel Mies, Rodrigo L. Moura, Ferdinand K.J. Oberle, Natan Pereira, Nancy G. Prouty, Riovie D. Ramos, Haojima Ren, Emma Ryan, Diane M. Thompson, Lauren T. Toth, Marina Vergotti, Jody M. Webster, Jens Zinke
Temporal and spatial changes in seismic attenuation associated with inferred fluid migration in the 2016 central Apennines earthquake sequence Temporal and spatial changes in seismic attenuation associated with inferred fluid migration in the 2016 central Apennines earthquake sequence
Prior work suggests that high‐frequency seismic attenuation acts as a highly sensitive proxy for crustal permeability and fluid mobility in fractured media. We test the hypothesis that the fault system responsible for the 2016–2017 Amatrice–Visso–Norcia–Capitignano sequence acted as an impermeable seal, compartmentalizing pressurized fluids until dynamic rupture triggered widespread...
Authors
Luca Malagnini, Francesco Pio Lucente, Irene Munafo, Douglas S. Dreger, Thomas E. Parsons, Roland Bürgmann