| Abstract: | An investigation of coastal groundwater systems was performed along the North Shore of Long Island, New York, during May 2008 to constrain nutrient delivery to Northport Harbor and Manhasset Bay by delineating locations of likely groundwater discharge. The embayments are bounded by steep moraines and are underlain by thick, fine-grained sediments deposited in proglacial lakes during the last ice age. Beach sand and gravel overlie the glacial deposits along the coast. The continuous resistivity profiling (CRP) surveys that were conducted indicate the existence of low-salinity groundwater in shore-parallel bands, typically 25 to 50 meters wide, along the shorelines of both bays. Piezometer sampling and seepage meter deployments in intertidal and subtidal areas of the two bays confirmed the presence and discharge of brackish and low-salinity groundwater. The large tidal ranges (up to 3 meters) and the steep onshore topography and hydraulic gradients are important variables controlling coastal groundwater discharge in these areas. |
| Genre: | USGS Numbered Series |
| ProdID: | 70038321 |
| Citation Author: | Cross, V.A. ; Bratton, J.F. ; Crusius, J. ; Kroeger, K.D. ; Worley, C.R. |
| Citation Contributing Office: | Woods Hole Coastal and Marine Science Center |
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| Citation Language: | English |
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| Citation LatN: | 0410500 |
| Citation LatS: | 0404500 |
| Citation LonE: | -0732000 |
| Citation LonW: | -0735000 |
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| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | HTML Document |
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| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 2011-1041 |
| Citation Search Results Text: | Continuous resistivity profiling data from Northport Harbor and Manhasset Bay, Long Island, New York; 2012; OFR; 2011-1041; Cross, V.A. ; Bratton, J.F. ; Crusius, J. ; Kroeger, K.D. ; Worley, C.R. |
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| Citation Year: | 2012 |
| Type: | citation/reference |
| Text: | Continuous resistivity profiling data from Northport Harbor and Manhasset Bay, Long Island, New York; 2012; OFR; 2011-1041; Cross, V.A. ; Bratton, J.F. ; Crusius, J. ; Kroeger, K.D. ; Worley, C.R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/ofr_2011_1041.gif |
| URL (INDEX PAGE): | http://pubs.usgs.gov/of/2011/1041/ |
| Date Other: | Tue, 8 May 2012 00:00 -0500 |
| Publisher: | U.S. Geological Survey |
