North Atlantic intermediate water variability over the past 20,000 years
Yasuhara M, deMenocal PB, Dwyer GS, Cronin TM, Okahashi H, Huang HH (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 47
Pages Range: 659-663
Journal Issue: 7
DOI: 10.1130/G46161.1
Abstract
North Atlantic intermediate-water temperature variations based on ostracod Mg/Ca ratios from Ocean Drilling Program (ODP) Hole 1055B document a series of multi-centennial-scale abrupt warming events throughout the last deglaciation and Holocene (up to ~3 °C). These events are coherent with abrupt climate reversals including Heinrich event 1, the Younger Dryas-Intra-Allerød cold period, and Holocene North Atlantic Deep Water (NADW) reduction periods. Deglacial-Holocene warm events were likely related to reduction in the strength of the upper NADW (Labrador Sea Water). We also found a long-term cooling trend in the ODP 1055 Mg/Ca record indicating continuous Labrador Sea Water strengthening throughout the Holocene. Our results help to better understand deglacial-Holocene upper NADW dynamics that remain poorly understood but can be important for regional and global climates.
Authors with CRIS profile
Involved external institutions
University of Hong Kong (HKU) / 香港大學
Hong Kong (HK)
United States Geological Survey (USGS)
United States (USA) (US)
Lamont-Doherty Earth Observatory
United States (USA) (US)
Duke University
United States (USA) (US)
Hong Kong (HK)
United States Geological Survey (USGS)
United States (USA) (US)
Lamont-Doherty Earth Observatory
United States (USA) (US)
Duke University
United States (USA) (US)
How to cite
APA:
Yasuhara, M., deMenocal, P.B., Dwyer, G.S., Cronin, T.M., Okahashi, H., & Huang, H.-H. (2019). North Atlantic intermediate water variability over the past 20,000 years. Geology, 47(7), 659-663. https://dx.doi.org/10.1130/G46161.1
MLA:
Yasuhara, Moriaki, et al. "North Atlantic intermediate water variability over the past 20,000 years." Geology 47.7 (2019): 659-663.
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