Publications
Scientific reports, journal articles, and information products produced by USGS Pacific Coastal and Marine Science Center scientists.
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Filter Total Items: 1414
Expanding the repertoire of electron acceptors for the anaerobic oxidation of methane in carbonates in the Atlantic and Pacific Ocean Expanding the repertoire of electron acceptors for the anaerobic oxidation of methane in carbonates in the Atlantic and Pacific Ocean
Authigenic carbonates represent a significant microbial sink for methane, yet little is known about the microbiome responsible for the methane removal. We identify carbonate microbiomes distributed over 21 locations hosted by seven different cold seeps in the Pacific and Atlantic Oceans by carrying out a gene-based survey using 16S rRNA- and mcrA gene sequencing coupled with metagenomic...
Authors
Sabrina Beckmann, Ibrahim Farag, Rui Zhao, Glenn Christman, Nancy Prouty, Jennifer Biddle
Potential use of the benthic foraminifers Bulimina denudata and Eggerelloides advenus in marine sediment toxicity testing Potential use of the benthic foraminifers Bulimina denudata and Eggerelloides advenus in marine sediment toxicity testing
The benthic foraminifers Bulimina denudata and Eggerelloides advenus are commonly abundant in offshore regions in the Pacific Ocean, especially in waste-discharge sites. The relationship between their abundance and standard macrofaunal sediment toxicity tests (amphipod survival and sea urchin fertilization) as well as sediment chemistry analyte measurements were determined for sediments...
Authors
Mary McGann
The making of the NEAM Tsunami Hazard Model 2018 (NEAMTHM18) The making of the NEAM Tsunami Hazard Model 2018 (NEAMTHM18)
The NEAM Tsunami Hazard Model 2018 (NEAMTHM18) is a probabilistic hazard model for tsunamis generated by earthquakes. It covers the coastlines of the North-eastern Atlantic, the Mediterranean, and connected seas (NEAM). NEAMTHM18 was designed as a three-phase project. The first two phases were dedicated to the model development and hazard calculations, following a formalized decision...
Authors
Roberto Basili, Beatriz Brizuela, Andre Herrero, Sarfraz Iqbal, Stefano Lorito, Francesco Maesano, Shane Murphy, Paolo Perfetti, Fabrizio Romano, Antonio Scala, Jacopo Selva, Matteo Taroni, Mara Tiberti, Hong Kie Thio, R. Tonini, Manuela Volpe, Sylfest Glimsdal, Carl Harbitz, Finn Lovholt, Maria Baptista, Fernando Carrilho, Luis Matias, Rachid Omira, Andrey Babeyko, Andreas Hoechner, Mucahit Gurbuz, Onur Pekcan, A. Yalciner, Miquel Canals, Galderic Lastras, Apostolos Agalos, Gerassimo Papadapoulos, Ioanna Triantafyllou, Sabah Benchekroun, Hedi Jaouadi, Samir Abdallah, Atef Bouallegue, Hassene Hamdi, Foued Oueslati, A. Amato, Alberto Armigliato, Jorn Behrens, Gareth Davies, Daniela Di Bucci, Mauro Dolce, Eric Geist, Jose Gonzalez Vida, Mauricio Gonzalez, Jorges Sanchez, C. Meletti, Ceren Sozdinler, Marco Pagani, Tom Parsons, Jascha Polet, William Power, Mathilde B. Sorensen, Andrey Zaytsev
The role of surges during periods of very shallow water on sediment transport over tidal flats The role of surges during periods of very shallow water on sediment transport over tidal flats
Periods of very shallow water (water depth in the order of 10 cm) occur daily on tidal flats because of the propagation of tides over very gently sloping beds, leading to distinct morphodynamical phenomena. To improve the understanding of the characteristics of velocity and suspended sediment concentration (SSC) surges and their contribution to sediment transport and local bed changes...
Authors
Qian Zhang, Zheng Gong, Changkuan Zhang, Jessica Lacy, Bruce Jaffe, Beibei Xu, Xindi Chen
Deepwater debrites and linked megaturbidites in confined basins: An example from the Onnuri Basin, East Sea of Korea Deepwater debrites and linked megaturbidites in confined basins: An example from the Onnuri Basin, East Sea of Korea
We analyzed data from seven piston cores, multi-channel seismic-reflection (MCS) and chirp profiles, and multibeam echosounder (MBES) data to study the distribution, emplacement time, sedimentary facies, and depositional processes of sediment-gravity-flow deposits in the Onnuri Basin, a confined basin in the East Sea. These data reveal that debris flows have traveled ca. 30 km downslope...
Authors
Deniz Cukur, In-Kwon Um, Jong-Hwa Chun, Gwang-Soo Lee, Gee-Too Kong, Samuel Y. Johnson, Senay Horozal
Preconditioning by sediment accumulation can produce powerful turbidity currents without major external triggers Preconditioning by sediment accumulation can produce powerful turbidity currents without major external triggers
Turbidity currents dominate sediment transfer into the deep ocean, and can damage critical seabed infrastructure. It is commonly inferred that powerful turbidity currents are triggered by major external events, such as storms, river floods, or earthquakes. However, basic models for turbidity current triggering remain poorly tested, with few studies accurately recording precise flow...
Authors
Lewis Bailey, Michael Clare, Kurt Rosenberger, Matthieu Cartigny, Peter Talling, Charles Paull, Roberto Gwiazda, Daniel Parsons, Stephen Simmons, Jingping Xu, Ivan Haigh, Katherine Maier, Mary McGann, Eve Lundsten
Characterization of deep-sea coral and sponge communities in Greater Farallones National Marine Sanctuary: Point Arena South Essential Fish Habitat Conservation Area and New Amendment 28 Areas Characterization of deep-sea coral and sponge communities in Greater Farallones National Marine Sanctuary: Point Arena South Essential Fish Habitat Conservation Area and New Amendment 28 Areas
This report summarizes samples collected during a remotely operated vehicle (ROV) cruise conducted in October 2019 on board E/V Nautilus. Areas sampled in Greater Farallones National Marine Sanctuary included areas proposed for fisheries management zoning in the Point Arena South (PAS) Essential Fish Habitat Conservation Area (EFH). Dive planning targeted habitats and biological...
Authors
Kaitlin Graiff, Jan Roletto, Sage Tezak, Gary Williams, Guy Cochrane
A 100-km wide slump along the upper slope of the Canadian Arctic was likely preconditioned for failure by brackish pore water flushing A 100-km wide slump along the upper slope of the Canadian Arctic was likely preconditioned for failure by brackish pore water flushing
Exploration of the continental slope of the Canadian Beaufort Sea has revealed a remarkable coalescence of slide scars with headwalls between 130 and 1100 m water depth (mwd). With increased depth, the scars widen and merge into one gigantic regional slide scar that is more than 100 km wide below ~1100 mwd. To understand the development of these features, five sites were investigated...
Authors
C. K. Paull, S.R. Dallimore, D.W. Caress, R. Gwiazda, E. Lundsten, K. Anderson, H. Melling, Y.K. Jin, M.J. Duchesne, Kang S-G., S. Kim, M. Riedel, E.L. King, Thomas Lorenson
Long-term changes in kelp forests in an inner basin of the Salish Sea Long-term changes in kelp forests in an inner basin of the Salish Sea
Kelp forests form an important biogenic habitat that responds to natural and human drivers. Global concerns exist about threats to kelp forests, yet long-term information is limited and research suggests that trends are geographically distinct. We examined distribution of the bull kelp Nereocystis luetkeana over 145 years in South Puget Sound (SPS), a semi-protected inner basin in a...
Authors
H.D. Berry, T.F. Mumford, M. Calloway, L. Ferrier, B. Christiaen, P. Dowty, Eric Grossman, Nathan vanArendonk
The contribution of currents, sea-swell waves, and infragravity waves to suspended-sediment transport across a coral reef-lagoon system. The contribution of currents, sea-swell waves, and infragravity waves to suspended-sediment transport across a coral reef-lagoon system.
Coral reefs generate substantial volumes of carbonate sediment, which is redistributed throughout the reef‐lagoon system. However, there is little understanding of the specific processes that transport this sediment produced on the outer portions of coral reefs throughout a reef‐lagoon system. Furthermore, the separate contributions of currents, sea‐swell waves, and infragravity waves to...
Authors
Andrew Pomeroy, Curt Storlazzi, Kurt Rosenberger, Ryan Lowe, Jeff Hansen, Mark Buckley
The application of ensemble wave forcing to quantify uncertainty of shoreline change predictions The application of ensemble wave forcing to quantify uncertainty of shoreline change predictions
Reliable predictions and accompanying uncertainty estimates of coastal evolution on decadal to centennial time scales are increasingly sought. So far, most coastal change projections rely on a single, deterministic realization of the unknown future wave climate, often derived from a global climate model. Yet, deterministic projections do not account for the stochastic nature of future...
Authors
Sean Vitousek, Laura Cagigal, Jennifer Montano, Ana Rueda, Fernando Mendez, Giovanni Coco, Patrick Barnard
Can modeling the geologic record contribute to constraining the tectonic source of the AD 1755 Great Lisbon earthquake? Can modeling the geologic record contribute to constraining the tectonic source of the AD 1755 Great Lisbon earthquake?
The precise location of the seismic source of 1755 CE Great Lisbon earthquake is still uncertain. The aim of this work is to use an onland sedimentary record in southern Portugal to test and validate seismic sources for the earthquake. To achieve this, tsunami deposit thicknesses from over 150 cores collected at Salgados in southern Portugal were compared to the results of a tsunami...
Authors
Francisco Dourado, Pedro Costa, SeanPaul La Selle, Caesar Andrade, Ivana Bosnic, Guy Gelfenbaum