Study Sites

Ogunquit, Maine

We measured hydrodynamics and sediment transport within the Rachel Carson National Wildlife Refuge, to quantify the sediment budget of the wetland complex adjacent to the Ogunquit River.

Data reports: http://dx.doi.org/10.3133/ofr20151072.

West Falmouth Harbor, Massachusetts

We have conducted several field and modeling campaigns in this estuary on Cape Cod, to investigate nitrogen loading, eutrophication, and seagrass dynamics.

Data reports: http://pubs.usgs.gov/of/2011/1113

Peer-reviewed publications:

del Barrio, P., Ganju, N. K., Aretxabaleta, A. L., Hayn, M., García, A., and Howarth, R. W., 2014, Modeling future scenarios of light attenuation and potential seagrass success in a eutrophic estuary, Estuarine, Coastal and Shelf Science, 149, 13-23. (delBarrio_et_al_seagrass.pdf)

Ganju, N. K., Hayn, M., Chen, S. N., Howarth, R. W., Dickhudt, P. J., Aretxabaleta, A. L., and Marino, R., 2012, Tidal and groundwater fluxes to a shallow, microtidal estuary: constraining inputs through field observations and hydrodynamic modeling. Estuaries and Coasts, 35, 1285-1298. (ganju_et_al_fluxes.pdf)

Ganju, N.K., 2011, A novel approach for direct estimation of fresh groundwater discharge to an estuary, Geophysical Research Letters, 38, L11402, doi:10.1029/2011GL047718. (ganju_groundwater.pdf)

Hayn, M., Howarth, R., Marino, R., Ganju, N., Berg, P., Foreman, K. H., Giblin, A.E., and McGlathery, K., 2013, Exchange of nitrogen and phosphorus between a shallow lagoon and coastal waters. Estuaries and Coasts, 1-11. PDF File

Model output: Oceanographic Model and Data Portal

Great South Bay, New York

We began studying the water level response in Great South Bay due to Hurricane Sandy, and aim to continue studying this system using observational and modeling approaches.

Peer-reviewed publications:

Aretxabaleta, A. L., Butman, B., and Ganju, N. K., 2014, Water level response in back-barrier bays unchanged following Hurricane Sandy, Geophysical Research Letters, 41, 3163-3171. (aretxabaleta_et_al_sandy.pdf)

Jamaica Bay, New York

As part of the Estuarine Physical Response to Storms (EPR) project, we are collaborating with the USGS New York Water Science Center to estimate sediment supply to the wetlands of Jamaica Bay. The real-time measurement site can be found here: http://waterdata.usgs.gov/ny/nwis/uv?site_no=01311875

Model output: Coming Soon

Barnegat Bay, New Jersey

As part of a NJDEP funded study as well as the EPR project, we have deployed instrumentation and developed models for hydrodynamics, water quality, and sediment transport in this large back-barrier estuary. The Hurricane Sandy Wetland Synthesis project is also focusing on Forsythe National Wildlife Refuge, which is largely adjacent to Barnegat Bay.

Data reports: http://pubs.er.usgs.gov/publication/ofr20151146

Peer-reviewed publications:

Defne, Z., and Ganju, N. K., 2014, Quantifying the residence time and flushing characteristics of a shallow, back-barrier estuary: application of hydrodynamic and particle tracking models, Estuaries and Coasts, 38, 1719-1734. (defne_ganju_barnegat.pdf)

Ganju, N. K., Miselis, J. L., and Aretxabaleta, A. L., 2014, Physical and biogeochemical controls on light attenuation in a eutrophic, back-barrier estuary, Biogeosciences, 11, 7193-7205. (ganju_et_al_light.pdf)

Model output: Oceanographic Model and Data Portal

Chincoteague Bay, Maryland/Virginia

As part of the EPR project, we deployed instrumentation and developed models for hydrodynamics, water quality, and sediment transport in this large back-barrier estuary. The barrier island is within two DOI-managed units (Assateague Island National Seashore and Chincoteague National Wildlife Refuge) and represents a critical natural resource.

Data report: in preparation

Model output: Coming Soon

Blackwater NWR, Maryland

Blackwater National Wildlife Refuge, Maryland, is a prime example of marsh loss due to open-water expansion and sediment export. Two field campaigns, in the spring and fall of 2011, aimed to quantify the sediment availability to two distinctly different areas of Blackwater National Wildlife Refuge.

Data report: http://pubs.usgs.gov/of/2012/1099/

Peer-reviewed publications:

Ganju, N.K., Kirwan, M.L, Dickhudt, P.J., Guntenspergen, G.R., Cahoon, D.R., and Kroeger, K.D., 2015, Sediment transport based metrics of wetland stability, Geophysical Research Letters. (ganju_et_al_metrics.pdf)

Ganju, N.K., Nidzieko, N.J., and Kirwan, M.L., 2013, Inferring tidal wetland stability from channel sediment fluxes: observations and a conceptual model, Journal of Geophysical Research-Earth Surface, 118, 1–14. (ganju_et_al_stability.pdf).

Pacific Coast tidal wetlands

To complement our East Coast wetland sites, we deployed instrumentation for sediment fluxes at Pt. Mugu Naval Station and Seal Beach National Wildlife Refuge to understand the link between sediment transport and wetland stability.

Peer-reviewed publications:

Rosencranz, J.A., Ganju, N.K., Ambrose, R.F., Brosnahan, S.M., Dickhudt, P.J., Guntenspergen, G.R., MacDonald, G.M., Takekawa, J.Y, and Thorne, K.M., 2015, Balanced sediment fluxes in southern California’s Mediterranean-climate zone salt marshes, Estuaries and Coasts, DOI 10.1007/s12237-015-0056-y. (rosencranz_et_al_fluxes.pdf)

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Regional Map, Icons link to data report.

 

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