TY - JOUR
T1 - Centennial-to-millennial hydrologic trends and variability along the North Atlantic Coast, USA, during the Holocene
AU - Newby, Paige E.
AU - Shuman, Bryan N.
AU - Donnelly, Jeffrey P.
AU - Karnauskas, Kristopher B.
AU - Marsicek, Jeremiah
N1 - Publisher Copyright:
© 2014. American Geophysical Union. All Rights Reserved.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - Geophysical and sedimentary records from five lakes in Massachusetts reveal regionally coherent hydrologic variability during the Holocene. All of the lakes have risen since ∼9.0 ka, but multicentury droughts after 5.6 ka repeatedly lowered their water levels. Quantified water level histories from the three best-studied lakes share ≥70% of their reconstructed variance. Four prominent low-water phases at 4.9-4.6, 4.2-3.9, 2.9-2.1, and 1.3-1.2 ka were synchronous across coastal lakes, even after accounting for age uncertainties. The droughts also affected sites up to ∼200 km inland, but water level changes at 5.6-4.9 ka appear out of phase between inland and coastal lakes. During the enhanced multicentury variability after ∼5.6 ka, droughts coincided with cooling in Greenland and may indicate circulation changes across the North Atlantic region. Overall, the records demonstrate that current water levels are exceptionally high and confirm the sensitivity of water resources in the northeast U.S. to climate change.
AB - Geophysical and sedimentary records from five lakes in Massachusetts reveal regionally coherent hydrologic variability during the Holocene. All of the lakes have risen since ∼9.0 ka, but multicentury droughts after 5.6 ka repeatedly lowered their water levels. Quantified water level histories from the three best-studied lakes share ≥70% of their reconstructed variance. Four prominent low-water phases at 4.9-4.6, 4.2-3.9, 2.9-2.1, and 1.3-1.2 ka were synchronous across coastal lakes, even after accounting for age uncertainties. The droughts also affected sites up to ∼200 km inland, but water level changes at 5.6-4.9 ka appear out of phase between inland and coastal lakes. During the enhanced multicentury variability after ∼5.6 ka, droughts coincided with cooling in Greenland and may indicate circulation changes across the North Atlantic region. Overall, the records demonstrate that current water levels are exceptionally high and confirm the sensitivity of water resources in the northeast U.S. to climate change.
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U2 - 10.1002/2014GL060183
DO - 10.1002/2014GL060183
M3 - Article
AN - SCOPUS:84902949893
SN - 0094-8276
VL - 41
SP - 4300
EP - 4307
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 12
ER -