Pak, Dorothy K.; Lea, David W.; Kennett, James P. (2012): Millennial scale changes in sea-surface temperature and ocean circulation in the Northeast Pacific, 10-60 kyr BP. American Geophysical Union, Washington, DC, United States, Paleoceanography, 27 (1), georefid:2013-008067
Abstract:
A new centennial-scale Mg/Ca temperature record from the California margin (ODP Site 1017E) reveals large millennial-scale oscillations between 10 to 60 kyr. This record indicates that sea surface temperature on the California Margin warmed rapidly on the deglacial by 7.4 + or - 0.8 degrees C, and was preceded by a pre-Bolling temperature oscillation of 2.6 + or - 1.2 degrees C. Millennial-scale events of the last glacial episode were marked by sea surface temperature oscillations of between 3 and 7 degrees C on the California margin, and interstadials were associated with an increase in surface water salinity. The data are consistent with evidence for a glacial southward shift in the polar jet stream and concomitant strengthening of the relatively cold, fresh California Current during stadial events. The data also support previous hypotheses suggesting a tight coupling between the North Atlantic and northeast Pacific response to climate instability of the last glacial episode.
Coverage:
West: -121.0625 East: -121.0625 North: 34.3205 South: 34.3205
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