Coastal and Marine Hazards and Resources Program

Publications

The Coastal and Marine Hazards and Resources Program publications are listed here. Search by topics and by year.

Filter Total Items: 1,149
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Year Published: 2021

Geologic and geophysical maps of the Santa Maria and part of the Point Conception 30'×60' quadrangles, California

This report presents digital geologic, gravity, and aeromagnetic maps for the onshore parts of the Santa Maria and Point Conception 30'x60' quadrangles at a compilation scale of 1:100,000. The map depicts the distribution of bedrock units, surficial deposits, paleontological data, geophysical data and structural features in the Santa Maria basin...

Sweetkind, Donald S.; Langenheim, Victoria E.; McDougall-Reid, Kristin; Sorlien, Christopher C.; Demas, Shiera C.; Tennyson, Marilyn E.; Johnson, Samuel Y.
Sweetkind, D.S., Langenheim, V.E., McDougall-Reid, K., Sorlien, C.C., Demas, S.C., Tennyson, M.E., and Johnson, S.Y., 2021, Geologic and geophysical maps of the Santa Maria and part of the Point Conception 30'×60' quadrangles, California: U.S. Geological Survey Scientific Investigations Map 3472, 1 sheet, scale 1:100,000, 58-p. pamphlet, https://doi.org/10.3133/sim3472. [Supersedes USGS Open-File Reports 95–25 and 92–189.]

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Year Published: 2021

Colored shaded-relief bathymetry, acoustic backscatter, and selected perspective views of the northern part of the California Continental Borderland, southern California

The California Continental Borderland is the complex continental margin in southern California that extends from Point Conception southward into northern Baja California (Fisher and others, 2009). This colored shaded-relief bathymetry map of the northern continental borderland in southern California was generated primarily from multibeam-...

Dartnell, Peter; Roland, Emily C.; Raineault, Nicole A.; Castillo, Christopher M.; Conrad, James E.; Kane, Renato; Brothers, Daniel S.; Kluesner, Jared; Walton, Maureen A. L.
Dartnell, P., Roland, E.C., Raineault, N.A., Castillo, C.M., Conrad, J.E., Kane, R., Brothers, D.S., Kluesner, J., and Walton, M.A.L., 2021, Colored shaded-relief bathymetry, acoustic backscatter, and selected perspective views of the northern part of the California Continental Borderland, southern California: U.S. Geological Survey Scientific Investigations Map 3473, 3 sheets, scale 1:250,000, https://doi.org/10.3133/sim3473.

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Year Published: 2021

Multiple climate change-driven tipping points for coastal systems

As the climate evolves over the next century, the interaction of accelerating sea level rise (SLR) and storms, combined with confining development and infrastructure, will place greater stresses on physical, ecological, and human systems along the ocean-land margin. Many of these valued coastal systems could reach “tipping points,” at which hazard...

Barnard, Patrick L.; Dugan, Jenifer; Page, Henry M. ; Wood, Nathan J.; Finzi Hart, Juliette A.; Cayan, Daniel; Erikson, Li H.; Hubbard, David A.; Myers, Monique; Melack, John M.; Iacobellis, Samuel F.

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Year Published: 2021

Extent of impact of deep-sea nodule mining midwater plumes is influenced by sediment loading, turbulence and thresholds

Deep-sea polymetallic nodule mining research activity has substantially increased in recent years, but the expected level of environmental impact is still being established. One environmental concern is the discharge of a sediment plume into the midwater column. We performed a dedicated field study using sediment from the Clarion Clipperton...

Munoz-Royo, Carlos; Peacock, Thomas; Alford, Matthew; Smith, Jerome; Le Boyer, Arnaud; Kulkarni, Chinmay; Lermusiaux, Pierre; Haley, Patrick; Mirabito, C; Wang, Dayang; Adams, Eric; Ouillon, Raphael; Breugem, Alexander; Decrop, Boudewijn; Lanckreit, Thijs; Supekar, Rohit; Rzeznik, Andrew; Gartman, Amy; Se-Jong Ju

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Year Published: 2021

Multiple melt source origin of the Line Islands (Pacific Ocean)

The Line Islands volcanic chain in the central Pacific Ocean exhibits many characteristics of a hotspot-generated seamount chain; however, the lack of a predictable age progression has stymied previous models for the origin of this feature. We combined plate-tectonic reconstructions with seamount age dates and available geochemistry to develop a...

Pockalny, Robert; Barth, Ginger; Eakins, Barry; Kelley, Katherine A.; Wertman, Christina

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Year Published: 2021

Bomb-produced radiocarbon across the South Pacific Gyre— A new record from American Samoa with utility for fisheries science

Coral skeletal structures can provide a robust record of nuclear bomb produced 14C with valuable insight into air-sea exchange processes and water movement with applications to fisheries science. To expand these records in the South Pacific, a coral core from Tutuila Island, American Samoa was dated with density band counting covering a 59-yr...

Andrews, Allen; Prouty, Nancy G.; Cheriton, Olivia

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Year Published: 2021

Global-scale changes to extreme ocean wave events due to anthropogenic warming

Extreme surface ocean waves are often primary drivers of coastal flooding and erosion over various time scales. Hence, understanding future changes in extreme wave events owing to global warming is of socio-economic and environmental significance. However, our current knowledge of potential changes in high-frequency (defined here as having return...

Morim, Joao; Vitousek, Sean; Hemer, Mark; Reguero, Borja; Erikson, Li H.; Casas-Prat, Merce; Wang, Xiaolan L.; Semedo, Alvaro; Mori, Nobuhito; Shimura, Tomoya; Mentaschi, Lorenzo; Timmerman, Ben

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Year Published: 2021

Timing of iceberg scours and massive ice-rafting events in the subtropical North Atlantic

High resolution seafloor mapping shows extraordinary evidence that massive (>300 m thick) icebergs once drifted >5,000 km south along the eastern United States, with >700 iceberg scours now identified south of Cape Hatteras. Here we report on sediment cores collected from several buried scours that show multiple plow marks align with...

Condron, Alan; Hill, Jenna C.

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Year Published: 2021

Influence of invasive submerged aquatic vegetation (E. densa) on currents and sediment transport in a freshwater tidal system

We present a field study combining measurements of vegetation density, vegetative drag, and reduction of suspended-sediment concentration (SSC) within patches of the invasive submerged aquatic plant Egeria densa. Our study was motivated by concern that sediment trapping by E. densa, which has proliferated in the Sacramento–San Joaquin...

Lacy, Jessica R.; Foster-Martinez, Madeline R.; Allen, Rachel M.; Drexler, Judith Z.

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Year Published: 2021

An efficient method to calculate depth-integrated, phase-averaged momentum balances in non-hydrostatic models

Analysis of the mean (wave-averaged) momentum balance is a common approach used to explain the physical forcing driving wave set-up and mean currents in the nearshore zone. Traditionally this approach has been applied to phase-averaged models but has more recently been applied to phase-resolving models using post-processing, whereby model output...

da Silva, Renan F.; Rijnsdorp, Dirk P.; Hansen, Jeff E.; Lowe, Ryan J.; Buckley, Mark L.; Zijlema, Marcel

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Year Published: 2021

Twenty-first-century projections of shoreline change along inlet-interrupted coastlines

Sandy coastlines adjacent to tidal inlets are highly dynamic and widespread landforms, where large changes are expected due to climatic and anthropogenic influences. To adequately assess these important changes, both oceanic (e.g., sea-level rise) and terrestrial (e.g., fluvial sediment supply) processes that govern the local sediment budget must...

Bamunawala, Janaka; Ranasinghe, Roshanka; Dastgheib, Ali; Nichols, Robert .J.; Murray, A. Brad; Barnard, Patrick L.; Sirisena, T. A. J. G.; Duong, Trang Minh; Hulscher, Suzanne J. M. H.; van der Spek, Ad

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Year Published: 2021

Point clouds of bridge generated by terrestrial laser scanner and images via Structure from Motion technique: Comparison study

A collection of points representing an object in space is commonly called a point cloud. There are several techniques for collecting point clouds. This research is focused on a comparison study of two approaches: (1) collecting point clouds with a surveying grade terrestrial laser scanner (TLS) and (2) generating point clouds from drone-taken...

Takhirov, Shakzod; Kayen, Robert E.