Unified Interior Regions

Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands)

Regions L2 Landing Page Tabs

Filter Total Items: 5,356
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Year Published: 2019

Hurricane Matthew: Predictions, observations, and an analysis of coastal change

Hurricane Matthew, the strongest Atlantic hurricane of the 2016 hurricane season, made land-fall south of McClellanville, S.C., around 1500 Coordinated Universal Time (UTC) on October 8, 2016. Hurricane Matthew affected the States of Florida, Georgia, South Carolina, and North Carolina along the U.S. Atlantic coastline. Numerous barrier islands...

Birchler, Justin J.; Doran, Kara S.; Long, Joseph W.; Stockdon, Hilary F.
Birchler, J.J., Doran, K.S., Long, J.W., and Stockdon, H.F., 2019, Hurricane Matthew—Predictions, observations, and an analysis of coastal change: U.S. Geological Survey Open-File Report 2019–1095, 37 p., https://doi.org/10.3133/ofr20191095.

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Year Published: 2019

Adapterama II: Universal amplicon sequencing on Illumina platforms (TaggiMatrix)

Next-generation sequencing (NGS) of amplicons is used in a wide variety of contexts. In many cases, NGS amplicon sequencing remains overly expensive and inflexible, with library preparation strategies relying upon the fusion of locus-specific primers to full-length adapter sequences with a single identifying sequence or ligating adapters onto PCR...

Glenn, Travis C; Pierson, Todd W; Bayona-Vásquez, Natalia J; Kieran, Troy J.; Hoffberg, Sandra L.; Thomas, Jesse; Lefever, Daniel E.; Finger Jr., John W.; Gao, Bei; Bian, Xiaoming; Louha, Swarnali; Kolli, Ramya; Bentley, Kerin; Rushmore, Julie; Wong, Kelvin; Rothrock, Michael; McKee, Anna M.; Guo, Tai L.; Mauricio, Rodney; Molina, Marirosa; Cummings, Brian; Lash, Lawrence H.; Lu, Kun; Gilbert, Gregory S.; Hubbell, Stephen P.; Faircloth, Brant C.

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Year Published: 2019

Tropical cyclones and the organization of mangrove forests: A review

Background Many mangrove ecosystems are periodically exposed to high velocity winds and surge from tropical cyclones and often recover with time and continue to provide numerous societal benefits in the wake of storm events. Scope This review focuses on the drivers and disturbance mechanisms (visible and functional) that tropical cyclones of...

Krauss, Ken; Osland, Michael

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Year Published: 2019

Catalog of microscopic organisms of the Everglades, part 2—The desmids of the Arthur R. Marshall Loxahatchee National Wildlife Refuge

The Arthur R. Marshall Loxahatchee National Wildlife Refuge (refuge), Boynton Beach, Florida, contains approximately 147,000 acres southeast of Lake Okeechobee. Water quality in the interior portion of the refuge is strongly influenced by rainfall, resulting in slightly acidic waters with low dissolved ions. Desmids, a unique, ornate group of...

Rosen, Barry H.; Stahlhut, Katherine N.; Hall, John D.
Rosen, B.H., Stahlhut, K.N., and Hall, J.D., 2019, Catalog of microscopic organisms of the Everglades, part 2—The desmids of the Arthur R. Marshall Loxahatchee National Wildlife Refuge: U.S. Geological Survey Scientific Investigations Report 2019–5074, 277 p., https://doi.org/10.3133/sir20195074.

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Year Published: 2019

Withdrawal and consumption of water by thermoelectric power plants in the United States, 2015

The U.S. Geological Survey has developed models to estimate thermoelectric water use based on linked heat and water budgets. The models produced plant-level withdrawal and consumption estimates using consistent methods for 1,122 water-using, utility-scale thermoelectric power plants in the United States for 2015. Total estimated withdrawal for...

Harris, Melissa A.; Diehl, Timothy H.
Harris, M.A., and Diehl, T.H., 2019, Withdrawal and consumption of water by thermoelectric power plants in the United States, 2015: U.S. Geological Survey Scientific Investigations Report 2019–5103, 15 p., https://doi.org/10.3133/sir20195103.

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Year Published: 2019

Groundwater/surface-water interactions along Ellerbe Creek in Durham, North Carolina, 2016–18

An assessment of groundwater/surface-water interactions along Ellerbe Creek, a major tributary to upper Falls Lake in Durham County, North Carolina, was conducted from July 2016 to March 2018 to determine if groundwater is a likely source of elevated nitrate input to the stream. Groundwater/surface-water interactions were characterized by synoptic...

Antolino, Dominick J.
Antolino, D.J., 2019, Groundwater/surface-water interactions along Ellerbe Creek in Durham, North Carolina, 2016–18: U.S. Geological Survey Scientific Investigations Report 2019–5097, 32 p., https://doi.org/10.3133/sir20195097.

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Year Published: 2019

Standardizing a non-lethal method for characterizing the reproductive status and larval development of freshwater mussels (Bivalvia: Unionoida)

Actively monitoring the timing, development, and reproductive patterns of endangered species is critical when managing for population recovery. Freshwater mussels are among the most imperiled organisms in the world, but information about early larval (glochidial) development and brooding periods is still lacking for many species. Previous studies...

Beaver, Caitlin; Geda, Susan; Johnson, Nathan

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Year Published: 2019

Prediction and inference of flow-duration curves using multi-output neural networks

We develop multi-output neural network models (MNNs) to predict flow-duration curves (FDCs) in 9,203 ungaged locations in the Southeastern United States for six decades between 1950-2009. The model architecture contains multiple response variables in the output layer that correspond to individual quantiles along the FDC. During training,...

Worland, Scott C.; Steinschneider, Scott; Asquith, William H.; Knight, Rodney; Wieczorek, Michael E.

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Year Published: 2019

Coastal Salinity Index along the southeastern Atlantic coast and the Gulf of Mexico, 1983 to 2018

Coastal droughts have a different dynamic than upland droughts, which are typically characterized by agricultural, hydrologic, meteorological, and (or) socioeconomic effects. Drought uniquely affects coastal ecosystems because of changes in the salinity conditions of estuarine creeks and rivers. The location of the freshwater-saltwater interface...

Petkewich, Matthew; Lackstrom, Kirsten; McCloskey, Bryan J.; Rouen, Lauren F.; Conrads, Paul A.
Petkewich, M.D., Lackstrom, K., McCloskey, B.J., Rouen, L.F., and Conrads, P.A., 2019, Coastal Salinity Index along the southeastern Atlantic coast and the Gulf of Mexico, 1983 to 2018: U.S. Geological Survey Open-File Report 2019–1090, 26 p., https://doi.org/10.3133/ofr20191090.

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Year Published: 2019

Wetland biomass and productivity in Coastal Louisiana: Base line data (1976-2015) and knowledge gaps for the development of spatially explicit models for ecosystem restoration and rehabilitation initiatives

Coastal Louisiana host 37% of the coastal wetland area in the conterminous US, including one of the deltaic coastal regions more susceptible to the synergy of human and natural impacts causing wetland loss. As a result of the construction of flood protection infrastructure, dredging of channels across wetlands for oil/gas exploration and maritime...

Rivera-Monroy, Victor H.; Elliton, Courtney; Narra, Siddhartha; Meselhe, Ehab; Zhao, Xiaochen; White, Eric; Sasser, Charles E.; Visser, Jenneke M.; Meng, X.; Wang, Hongqing; Xue, Zuo; Jaramillo, Fernando

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Year Published: 2019

Environmental DNA (eDNA) detection of nonnative bullseye snakehead in southern Florida

Bullseye Snakehead Channa marulius (Hamilton 1822) was first detected in the southern Florida town of Tamarac in 2000 and has been expanding its geographic range since. Environmental DNA (eDNA) analysis is a newly-developed technique used to noninvasively detect cryptic or low-density species or those that are logistically difficult-to-study....

Hunter, Margaret; Schofield, Pam; Meigs-Friend, Gaia; Brown, Mary; Ferrante, Jason

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Year Published: 2019

Hemidactylus parvimaculatus (Sri Lankan spotted house gecko)

USA: LOUISIANA: PLAQUEMINES PARISH: 0.15 km S of the intersection of LA-23 and Jump  road, Venice (29.266630°N, 89.35570°W; WGS 84). 2 May 2019. V. C. Montross and W. McGighan. Verified by Aaron M. Bauer. Florida Museum of Natural History (UF 189238; photo voucher). New parish record. On 2 May 2019, three Hemidactylus parvimaculatus were...

Pellacchia, C. M.; Glorioso, Brad M.; Mendyk, R. W.; Collen, C. A.; Montross, V. C.; McGighan, W.; Macedo, K.; Maldonado, B. R.; Morenc, I. N.

Filter Total Items: 498
Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 3 of 15: Community pool being undercut by a sinkhole. View to west across the sinkhole.

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 4 of 15: House within the sinkhole. View to north across the sinkhole.

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 5 of 15: House in a sinkhole. View to east across the sinkhole.

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 6 of 15: Sinkhole chimney at approximately 12 noon. View to south across the sinkhole.

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 7 of 15: Cars in a sinkhole. Auto mechanic’s garage starting to collapse into sinkhole. View to south across the sinkhole.

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 8 of 15: Community pool prior to collapse into the sinkhole. View to north across the sinkhole. (1:30 p.m)

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 9 of 15: Community pool collapsing into sinkhole at. Pool was roughly Olympic-sized and was about half full at the time of collapse. Impressive sounds of the rebar and concrete snapping, then the rush of water. View to north across the sinkhole. (1:30 p.m)

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 10 of 15: Sinkhole chimney after pool collapse. View to south across the sinkholne. For a time after the pool collapse and introduction of the pool water into the sinkhole, there was a noticeable increase in slope movement, especially deeper in the sinkhole. The house and building parts broke up further and disappeared. The steeper slope of the chimney or throat of

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Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 11 of 15: Intersection of South Denning Drive and West Comstock Ave. Sinkhole is edging close to Denning Drive. One block of Comstock Ave was swallowed. View to south on Denning Drive adjacent to the sinkhole.

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 12 of 15: Water level has risen and is now apparent in sinkhole since pool collapse and house swallowed. View to south across the sinkhole. The rising water level is likely a result of the debris plugging the conduit into the Floridan aquifer. Water level is rising to assume a position more consistent with that of the surficial aquifer. (3 p.m.)

Image: Winter Park Florida Sinkhole of 1981
May 9, 1981

Winter Park Florida Sinkhole of 1981

Photo 13 of 15: Water level in sinkhole chimney continued to rise. View to east across the sinkhole. (6 p.m.)

Filter Total Items: 399
USGS
November 21, 1996

The gasoline additive MTBE (methyl tert-butyl ether) was detected in some urban stormwater samples collected in 16 cities and metropolitan areas by the U.S. Geological Survey, but all detections of MTBE were less than the lower limit of the U.S. Environmental Protection Agency’s draft lifetime health advisory for drinking water.

USGS
September 11, 1996

The especially wet Hurricane Hortense has U.S. Geological Survey hydrologists and technicians working around the clock to measure its impact on the rivers of Puerto Rico. The Rio de la Plata in northeastern Puerto Rico, for example, has reached its highest level ever, exceeding the previous record high flow of Jan. 5, 1992, when the river reached a flow of 82 billion gallons per day.

USGS
September 5, 1996

From coastal erosion to measuring the storm surge and flooding as well as providing maps of affected areas, the U.S. Geological Survey is gearing up to provide information on Hurricane Fran as the storm develops, including real-time data, from its offices in Florida, Georgia, South Carolina, North Carolina, Virginia, Maryland, Delaware, Pennsylvania, New Jersey and New York.

Follow Region 2 activities on social media, get contact information for Region 2 USGS centers, and meet Region 2's staff and center directors.