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    Repeated century-scale droughts over the past 13,000 yr near the Hudson River watershed, USA

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    Date
    2010-02
    Author
    Newby, Paige E.  Concept link
    Shuman, Bryan N.  Concept link
    Donnelly, Jeffrey P.  Concept link
    MacDonald, Dana  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/4640
    As published
    https://doi.org/10.1016/j.yqres.2011.01.006
    Keyword
     Lake level; Northeastern USA; Hydroclimate; Holocene 
    Abstract
    Sediment and ground-penetrating radar data from Davis Pond near the Hudson River valley reveal past droughts in a historically humid region that presently supplies water to millions of people in and around New York City. A minimum of eleven sandy paleoshoreline deposits in the lake date from 13.4-0.6 cal ka BP. The deposits span 1500 to 200 years between bracketing radiocarbon dates, and intrude into lacustrine silts up to 9.0 m below the modern lake surface in a transect of six cores. Three lowstands, ca. 13.4-10.9, 9.2 and 8.2 cal ka BP indicate low regional moisture balance when low temperatures affected the North Atlantic region. Consistent with insolation trends, water levels rose from ca. 8.0 cal ka BP to present, but five low stands interrupted the rise and are likely associated with ocean-atmosphere interactions. Similar to evidence from other studies, the data from Davis Pond indicate repeated multi-century periods of prolonged or frequent droughts super-imposed on long-term regional trends toward high water levels. The patterns indicate that water supplies in this heavily populated region have continuously varied at multiple time scales, and confirm that humid regions such as the northeastern USA are more prone to severe drought than historically expected.
    Description
    Author Posting. © The Author(s), 2009. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Quaternary Research 75 (2011): 523-530, doi:10.1016/j.yqres.2011.01.006.
    Collections
    • Geology and Geophysics (G&G)
    Suggested Citation
    Preprint: Newby, Paige E., Shuman, Bryan N., Donnelly, Jeffrey P., MacDonald, Dana, "Repeated century-scale droughts over the past 13,000 yr near the Hudson River watershed, USA", 2010-02, https://doi.org/10.1016/j.yqres.2011.01.006, https://hdl.handle.net/1912/4640
     
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