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News stories posted in the last 90 days. For information about a story, contact Betsy Boynton.

USGS SPCMSC staff participate in the Tools Showcase at Coastal GeoTools Conference 2019

Xan Fredericks (USGS SPCMSC), Heather Schreppel (Cherokee Nation Technologies), and Kara Doran (USGS SPCMSC) participated in the Tools Showcase at the Coastal GeoTools 2019 conference in Myrtle Beach, South Carolina, February 11–14. Their booth in the showcase was focused on "USGS Coastal/Marine Hazards and Resources Program GIS Tools: Total Water Level Forecast Viewer and Coastal Change Hazards Portal." Coastal GeoTools is a conference dedicated to technology and the coastal environment, with an aim to find innovative, proven approaches to address coastal management issues, learn about the latest technologies, and build professional networks. Held since 1999, the biennial event is attended by planners, engineers, natural resource managers, geospatial analysts, and scientists from all sectors.

posted: 2019-02-22

USGS scientists publish results from a long-term study of Globigerinoides ruber in the Gulf of Mexico, aiding in reconstruction of past climatic conditions

The planktic foraminifer, Globigerinoides ruber, is the most widely used proxy recorder for reconstructing past temperature and salinity in the low to mid-latitude oceans. USGS scientists have had a sediment trap mooring in the northern Gulf of Mexico for the past decade, 2008–2019, to investigate seasonal and inter-annual variations in the flux and morphometry in addition to the isotopic and trace metal geochemistry of this geologically important species. This study shows that two chromotypes of this species (pink and white) can be used interchangeably to reflect mean annual surface ocean conditions. This study also demonstrates that the canonical 9% increase in shell Mg/Ca per 1°C increase in temperature is an overestimate of temperature sensitivity, and that pH has an important influence on Mg/Ca-derived ocean temperature records in this species. Partners in the study include University of Texas at Austin, University of Southern California, and Brown University.

To read the accepted article please visit:
Considerations for Globigerinoides ruber (white and pink) paleoceanography: comprehensive insights from a long-running sediment trap
To view the associated USGS data release please visit: Globigerinoides ruber Sediment Trap Data in the Gulf of Mexico

posted: 2019-02-22

Scientists to Attend "Reef Futures 2018" Symposium on Reef Restoration

A team of three scientists from St. Petersburg Coastal & Marine Science Center: Research Marine Biologist Ilsa Kuffner, Research Oceanographer Lauren Toth, and Oceanographer Anastasios Stathakopoulos will travel to Key Largo, FL, December 10 to 14 to attend "Reef Futures 2018: A Coral Restoration and Intervention-Science Symposium." This global conference will bring together over 400 leading scientists and experts from more than 30 countries. USGS involvement in the symposium includes Kuffner as Co-Chair of the Science Program Planning Committee, a concurrent session presenter, and a plenary speaker during the symposium closing remarks. Toth and Stathakopoulos will both present research findings during concurrent sessions. The USGS researchers will be presenting scientific results to guide the management and restoration of coral-reef ecosystems. The work presented will highlight the geological significance of reefs as protectors of coastal communities and how information on the Holocene fossil record can be used to make decisions on which species are critical to restoring coral reefs and where to place those species to achieve success.

posted: 2018-12-06

USGS researchers sample sediments from Lake Enriquillo in the Dominican Republic in 2018.Scientists Initiate new project to reconstruct Caribbean rainfall history in the Dominican Republic

A team of three USGS scientists, Julie Richey (USGS-Research Geologist); Jennifer Flannery (USGS-Chemist); and Jessica Rodysill (USGS-Research Geologist), and a collaborator from the University of Puerto Rico, Wilson Ramirez (UPRM-Professor of Geology), travelled to the far western border of the Dominican Republic to sample sediments from Lake Enriquillo. Lake Enriquillo is a hypersaline lake located on the border of the Dominican Republic and Haiti. It is a potentially important archive of paleoclimate information, capable of revealing the frequency and magnitude of rainfall changes over the past 5 millennia. The level of the lake has changed rapidly over the past decade, causing large socio-economic and ecological impacts in Hispañola. It has led to the necessity to relocate villages and roads. Local stakeholders are interested in knowing the scale of lake-level changes prior to the observational period, and in understanding how those changes are related to climate patterns in the Caribbean.

posted: 2018-11-29

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