Unified Interior Regions

Region 1: North Atlantic-Appalachian

Our Science Centers

Our Science Centers

The NAA Region has 15 Science Centers spanning 14 NE States and Washington, DC. The Centers conduct interdisciplinary biologic, geologic, hydrologic, and energy monitoring and research addressing natural resource issues facing our nation.

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June Photo Contest

June Photo Contest

Check out the winning photographs in the June 2021 Photo Contest! Categories include People, USGS at Work, Where We Work, and Honorable Mention

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Regions L2 Landing Page Tabs

Filter Total Items: 16,100
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Year Published: 2016

Assessment of canyon wall failure process from multibeam bathymetry and Remotely Operated Vehicle (ROV) observations, U.S. Atlantic continental margin

Over the last few years, canyons along the northern U.S. Atlantic continental margin have been the focus of intensive research examining canyon evolution, submarine geohazards, benthic ecology and deep-sea coral habitat. New high-resolution multibeam bathymetry and Remotely Operated Vehicle (ROV) dives in the major shelf-breaching and minor slope...

Lamarche, Geoffroy; Mountjoy, Joshu; Bull, Suzanne; Hubble, Tom; Krastel, Sebastian; Lane, Emily; Micallef, Aaron; Moscardelli, Lorena; Mueller, Christof; Pecher, Ingo; Woelz, Susanne; Chaytor, Jason D.; Demopoulos, Amanda W.J.; ten Brink, Uri S.; Baxter, Christopher D. P.; Quattrini, Andrea M.; Brothers, Daniel S.

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Year Published: 2016

The “Anthropocene” epoch: Scientific decision or political statement?

The proposal for the “Anthropocene” epoch as a formal unit of the geologic time scale has received extensive attention in scientific and public media. However, most articles on the Anthropocene misrepresent the nature of the units of the International Chronostratigraphic Chart, which is produced by the International Commission on...

Finney, Stanley C.; Edwards, Lucy E.
GSA Today, v. 26, no. 3–4

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Year Published: 2016

Tarangire revisited: Consequences of declining connectivity in a tropical ungulate population

The hyper-abundance of migratory wildlife in many ecosystems depends on maintaining access to seasonally available resources. In Eastern and Southern Africa, land-use change and a loss of connectivity have coincided with widespread declines in the abundance and geographic range of ungulate populations. Using photographic capture-mark-recapture, we...

Morrison, Thomas A.; Link, William A.; Newmark, William D.; Foley, Charles A.H.; Bolger, Douglas T.
Morrison, T. A., Link, W. A., Newmark, W. D., Foley, C. A. H., and Bolger, D. T., 2016, Tarangire revisited: Consequences of declining connectivity in a tropical ungulate population: Biological Conservation, v. 197, p. 53-60.

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Year Published: 2016

Reevaluating the age of the Walden Creek Group and the kinematic evolution of the western Blue Ridge, southern Appalachians

An integrated synthesis of existing datasets (detailed geologic mapping, geochronologic, paleontologic, geophysical) with new paleontologic and geochemical investigations of rocks previously interpreted as part of the Neoproterozoic Walden Creek Group in southeastern Tennessee suggest a necessary reevaluation of the kinematics and structural...

Thigpen, J. Ryan; Hatcher, Robert D.; Kah, Linda C.; Repetski, John E.

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Year Published: 2016

Elevation dynamics in a restored versus a submerging salt marsh in Long Island Sound

Accelerated sea-level rise (SLR) poses the threat of salt marsh submergence, especially in marshes that are relatively low-lying. At the same time, restoration efforts are producing new low-lying marshes, many of which are thriving and avoiding submergence. To understand the causes of these different fates, we studied two Long Island Sound marshes...

Anisfeld, Shimon C.; Hill, Troy D.; Cahoon, Donald R.

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Year Published: 2016

Progress and challenges in coupled hydrodynamic-ecological estuarine modeling

Numerical modeling has emerged over the last several decades as a widely accepted tool for investigations in environmental sciences. In estuarine research, hydrodynamic and ecological models have moved along parallel tracks with regard to complexity, refinement, computational power, and incorporation of uncertainty. Coupled hydrodynamic-ecological...

Ganju, Neil K.; Brush, Mark J.; Rashleigh, Brenda; Aretxabaleta, Alfredo L.; del Barrio, Pilar; Grear, Jason S.; Harris, Lora A.; Lake, Samuel J.; McCardell, Grant; O'Donnell, James; Ralston, David K.; Signell, Richard P.; Testa, Jeremy; Vaudrey, Jamie M. P.
Ganju, N.K., Brush, M.J., Rashleigh, B. et al. Estuaries and Coasts (2016) 39: 311. https://doi.org/10.1007/s12237-015-0011-y

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Year Published: 2016

Elastic stress transmission and transformation (ESTT) by confined liquid: A new mechanics for fracture in elastic lithosphere of the earth

We report on a new mechanical principle, which suggests that a confined liquid in the elastic lithosphere has the potential to transmit a maximum applied compressive stress. This stress can be transmitted to the internal contacts between rock and liquid and would then be transformed into a normal compressive stress with tangential tensile stress...

Xu, Xing-Wang; Peters, Stephen; Liang, Guang-He; Zhang, Bao-Lin
Xu, Xing-Wang, Peters, Stephen G., Liang, Guang-He, and Zhang, Bao-Lin, 2016, mechanics for fracture in elastic lithosphere of the earth: Tectonophysics 672–673 (2016) 129–138

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Year Published: 2016

Physical, chemical, and biological characteristics of selected headwater streams along the Allegheny Front, Blair County, Pennsylvania, July 2011–September 2013

The Altoona Water Authority (AWA) obtains all of its water supply from headwater streams that drain western Blair County, an area underlain in part by black shale of the Marcellus Formation. Development of the shale-gas reservoirs will require new access roads, stream crossing, drill-pad construction, and pipeline installation, activities that...

Low, Dennis J.; Brightbill, Robin A.; Eggleston, Heather L.; Chaplin, Jeffrey J.
Low, D.J., Brightbill, R.A., Eggleston, H.L., and Chaplin, J.J., 2016, Physical, chemical, and biological characteristics of selected headwater streams along the Allegheny Front, Blair County, Pennsylvania, July 2011–September 2013: U.S. Geological Survey Open-File Report 2015–1173, 66 p., http://dx.doi.org/10.3133/ofr20151173.

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Year Published: 2016

Distribution and diversity of tunicates utilizing eelgrass as substrate in the western North Atlantic between 39° and 47° north latitude (New Jersey to Newfoundland)

Seagrass meadows are ecologically important habitats that are declining globally at an accelerating rate due to natural and anthropogenic stressors. Their decline is a serious concern as this habitat provides many ecosystem services. Eelgrass (Zostera marina) is the dominant seagrass species in the western North Atlantic. It has recently been...

Carman, M R; Colarusso, Phillip D; Nelson, Eric P; Grunden, David W; Wong, Melisa C; McKenzie, Cynthia; Matheson, Kyle; Davidson, Jeffrey G.; Fox, Sophia; Neckles, Hilary A.; Bayley, Holly; Schott, Stephen; Dijkstra, Jennifer A; Stewart-Clark, Sarah
Carman, M. R., Colarusso, P. D., Nelson, E. P., Grunden, D. W., Wong, M. C., McKenzie, C., Matheson, K., Davidson, J., Fox, S., Neckles, H. A., Bayley, H., Schott, S., Dijkstra, J. A., and Stewart-Clark, S., 2016, Distribution and diversity of tunicates utilizing eelgrass as substrate in the western North Atlantic between 39° and 47° north latitude (New Jersey to Newfoundland) : Management of Biological Invasions, v. 7, no. 1, p. 51-57.

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Year Published: 2016

Arsenic in groundwater of Licking County, Ohio, 2012—Occurrence and relation to hydrogeology

Arsenic concentrations were measured in samples from 168 domestic wells in Licking County, Ohio, to document arsenic concentrations in a wide variety of wells and to identify hydrogeologic factors associated with arsenic concentrations in groundwater. Elevated concentrations of arsenic (greater than 10.0 micrograms per liter [µg/L]) were detected...

Thomas, Mary Ann
Thomas, M.A., 2016, Arsenic in groundwater of Licking County, Ohio, 2012—Occurrence and relation to hydrogeology: U.S. Geological Survey Scientific Investigations Report 2015–5148, 38 p., http://dx.doi.org/10.3133/sir20155148.

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Year Published: 2016

The effectiveness of water-treatment systems for arsenic used in 11 homes in Southwestern and Central Ohio, 2013

In 2013, the U.S. Geological Survey and the Miami Conservancy District investigated the effectiveness of methods used to remove arsenic from drinking water at 11 homes in southwestern and central Ohio. The untreated (raw) ground-water had arsenic concentrations of 7.7–382 micrograms per liter (µg/L), and the median concentration was 30 µg/L. The...

Thomas, Mary Ann; Ekberg, Mike
Thomas, M.A., and Ekberg, Mike, 2016, The effectiveness of water-treatment systems for arsenic used in 11 homes in Southwestern and Central Ohio, 2013: U.S. Geological Survey Scientific Investigations Report 2015–5156, 26 p., http://dx.doi.org/10.3133/sir20155156.

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Year Published: 2016

Spatial capture-recapture: a promising method for analyzing data collected using artificial cover objects

Spatial capture–recapture (SCR) is a relatively recent development in ecological statistics that provides a spatial context for estimating abundance and space use patterns, and improves inference about absolute population density. SCR has been applied to individual encounter data collected noninvasively using methods such as camera traps,...

Sutherland, Chris; Munoz, David; Miller, David A.W.; Grant, Evan H. Campbell
Sutherland, C., Munoz, D. J., Miller, D. A. W., and Grant, E. H. C., 2016, Spatial capture-recapture: a promising method for analyzing data collected using artificial cover objects: Herpetologica, v. 72, no. 1, p. 6-12.

Filter Total Items: 1,749
fog on a fall colored tree lined river
October 21, 2005

Early morning fog on Seneca River near Rte 89

Early morning fog on Seneca River near Rte 89 - index velocity gaging station in NY

2 white pipes marking groundwater wells on Long Island
October 6, 2005

Groundwater wells on Long Island's Fire Island

Groundwater wells on Long Island's Fire Island - Kismet

photo of telemetry on a Queens College campus building rooftop
September 23, 2005

Telemetry Station

Telemetry station with rain gage on top of a Queens College campus building in the borough of Queens, New York City

Image: Mt. Katahdin
September 1, 2005

Mt. Katahdin

This photo of Mt. Katahdin was taken from Abol Bridge, a popular spot to view Maine's highest peak. The USGS monitors groundwater and surface water in the area.

4 USGS staffers putting in a groundwater well on Long Island
June 24, 2005

Creating a groundwater well station on Long Island

Putting in a groundwater well station on Long Island

photo of groundwater monitoring well on Long Island with cover off
June 9, 2005

Groundwater Monitoring Well Long Island, New York

Preparing to sample a groundwater monitoring well on Long Island, New York

USGS scientist in truck with groundwater quality sampling equipment close to groundwater well
May 24, 2005

Groundwater quality sampling on Long Island NBU

USGS scientist sampling groundwater quality on Long Island, NY

Image: Acadia Waterfall
May 1, 2005

Acadia Waterfall

Hadlock Brook, in Acadia National Park, is a small watershed that was monitored by the USGS from 1999 to 2006. This photo of Hadlock Falls is a popular spot for a break on one of the many scenic trails through the park. The USGS gaging station was approximately 100 ft above the falls.

Image: Under The Ice at Libby Brook
February 1, 2005

Under The Ice at Libby Brook

In February 2005 a visit to a USGS station on Libby Brook near Northfield, Maine revealed a gap between the water level and a layer of ice above. Cold temperatures after a rain event caused the ice layer to form and as water levels dropped the ice layer remained. 

small waterfall into a stream surrounded by green bushes and trees
October 2, 2004

Esopus Creek, New York

A tributary of the Esopus Creek