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USGS Coastal and Marine Geology Program

Recent News

Recent News - stories from the last 14 days.

For information about a story, contact Ann Tihansky (202) 208-3342.

Map of projected flooding (blue shading) at south end of San Francisco Bay under conditions of a 25-centimeter rise in sea level and a 20-year storm. Green-shaded areas are protected by levees but otherwise would be flooded.21st century coastal flood projections to be released for San Francisco Bay

High-resolution flood projections for San Francisco Bay shorelines through the 21st century will be available August 2014 on the Our Coast, Our Future website (OCOF, http://data.prbo.org/apps/ocof/). OCOF offers an interactive tool to help Bay Area communities anticipate likely impacts of sea-level rise and climate change. Using results from the USGS Coastal Storm Modeling System (CoSMoS, http://walrus.wr.usgs.gov/coastal_processes/cosmos/) in a map-based interface, the online tool allows users to select combinations of storm intensity (average conditions to 100-year storm) and sea-level rise (0 to 5 meters) and observe areas that would flood in response. The Bay Area flood projections are an extension of previous work for the north-central California coast, already available on the OCOF website. Partners include NOAA, the National Park Service, and Point Blue Conservation Science. For more information, contact Patrick Barnard, pbarnard@usgs.gov, 831-460-7556.

posted: 2014-07-23



maps of study areas showing acoustic backscatter and bathymetry collected with interferometric sonarUSGS research on modification of the Quaternary stratigraphic framework of the inner-continental shelf by Holocene marine transgression, published in Marine Geology.

On July 3, 2014, USGS researchers published an article, Modification of the Quaternary stratigraphic framework of the inner-continental shelf by Holocene marine transgression: An example offshore of Fire Island, New York, by Schwab and others, in Marine Geology.

In this paper, maps of the geometry and structure of the Quaternary sedimentary deposits offshore of Fire Island are presented. These maps and geophysical data are used to form a conceptual model of the Holocene evolution of the inner-continental shelf and shoreface, a consequence of marine transgression of Pleistocene glaciofluvial sedimentary deposits.

To read the article visit Marine Geology

posted: 2014-07-21



coralMillennial-scale history of corals in Florida Keys Reef Tract

In June, 2014, Lauren Toth joined USGS-St. Petersburg as a Mendenhall Post-Graduate Fellow. Lauren will be working with coral ecologist Ilsa Kuffner on the CREST project (Coral Reef Ecosystem Studies) looking at corals from the USGS-St. Petersburg drill core collection. She will be analyzing the rates of reef accretion to understand why some reefs had slower rates of growth over the last 4000 years. Lauren will be utilizing the ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometer) to look at geochemistry of the corals in the drill core sections to understand not only changes in reef development, but also changes in the environment of the reefs through time.

posted: 2014-07-17



Data Series 767 index mapLidar Pre-Post Coverage of Hurricane Sandy for New Jersey released online

On July 16, the USGS released Data Series 767, "The EAARL-B Coastal Topography - Eastern New Jersey, Hurricane Sandy, 2012: First Surface." This publication provides geographically referenced elevation measurements of lidar-derived first-surface (FS) topography for a portion of the New Jersey coastline beachface, acquired pre-Hurricane Sandy on October 26, and post-Hurricane Sandy on November 1 and November 5, 2012. The datasets are made available for use as a management tool to research scientists and natural-resource managers.

posted: 2014-07-17



USF Oceanography Camp Students visit USGS St. Petersburg CenterUSF Oceanography Camp 2014 Students visit USGS St. Petersburg Center

On June 25 and 26, thirty 8th grade students attending University of South Florida (USF) College of Marine Science's (CMS) Oceanography Camp for Girls visited the USGS St. Petersburg Coastal and Marine Science Center (SPCMSC) to learn about how hurricanes and other extreme storms impact our coastline. Kara Doran simulated a hurricane using the Center's coastal erosion model, which illustrates how wind and waves transport sediment from a barrier island during storms. Fifteen students also had the opportunity to interview Center scientists one-on-one about their work. Participating St. Petersburg SPCMSC and Southeast Ecological Science Center (SESC) scientists included Kara Doran, Alisha Ellis, Jennifer Flannery, Caitlin Reynolds, Julie Richey, Lisa Robbins, Jaci Smith, Tom Smith, and Lauren Toth.

posted: 2014-07-10



Map showing study areaSt. Petersburg Center to conduct Louisiana Gulf Coast Islands fieldwork in July

From July 11th to the 31st, SPCMSC geologists Jim Flocks and Jen Miselis will lead a major field expedition to the Breton and Chandeleur Islands, part of the Breton National Wildlife Refuge, offshore of the Mississippi River Delta. The first of two field efforts at the Refuge this summer, the team will deploy from Venice, La., and Biloxi, Ms., and remain at the islands for the duration of the survey. The fieldwork will gather shallow-water bathymetry, near-surface geology, and island elevation using the R/V Sallenger among other vessels. SPCMSC staff participating in the field work include Julie Bernier, Trevor Browning, Nancy DeWitt, Jake Fredericks, Kyle Kelso, Stan Locker, BJ Reynolds, and Dana Wiese.

posted: 2014-07-10



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