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dc.contributor.authorSiegel, Jacob
Person, Mark
Dugan, Brandon
Cohen, Denis
Lizarralde, Daniel
Gable, Carl
dc.date.accessioned 2015-01-08T14:55:02Z
dc.date.available 2015-01-08T14:55:02Z
dc.date.issued 2014
dc.identifier.citation Siegel, Jacob, Person, Mark, Dugan, Brandon, et al.. "Influence of late Pleistocene glaciations on the hydrogeology of the continental shelf offshore Massachusetts, USA." Geochemistry, Geophysics, Geosystems, (2014) American Geophysical Union: http://dx.doi.org/10.1002/2014GC005569.
dc.identifier.urihttps://hdl.handle.net/1911/78904
dc.description.abstract Multiple late Pleistocene glaciations that extended onto the continental shelf offshore Massachusetts, USA, may have emplaced as much as 100 km3 of freshwater (salinity <5 ppt) in continental shelf sediments. To estimate the volume and extent of offshore freshwater, we developed a three-dimensional, variable-density model that couples fluid flow and heat and solute transport for the continental shelf offshore Massachusetts. The stratigraphy for our model is based on high-resolution, multichannel seismic data. The model incorporates the last 3 Ma of climate history by prescribing boundary conditions of sea level change and ice sheet extent and thickness. We incorporate new estimates of the maximum extent of a late Pleistocene ice sheet to near the shelf-slope break. Model results indicate that this late Pleistocene ice sheet was responsible for much of the emplaced freshwater. We predict that the current freshwater distribution may reach depths up to 500 meters below sea level and up to 30 km beyond Martha's Vineyard. The freshwater distribution is strongly dependent on the three-dimensional stratigraphy and ice sheet history. Our predictions improve our understanding of the distribution of offshore freshwater, a potential nonrenewable resource for coastal communities along recently glaciated margins.
dc.language.iso eng
dc.publisher American Geophysical Union
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.title Influence of late Pleistocene glaciations on the hydrogeology of the continental shelf offshore Massachusetts, USA
dc.type Journal article
dc.contributor.funder National Science Foundation
dc.citation.journalTitle Geochemistry, Geophysics, Geosystems
dc.subject.keywordPleistocene
hydrogeology
continental shelf
glaciation
freshwater resources
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1002/2014GC005569
dc.identifier.grantID OCE-0824368 (National Science Foundation)
dc.type.publication publisher version


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