Sea surface temperatures and upwelling conditions off Northern California coast during the early Pliocene

Author(s): Reed, Chelsea M.; Dekens, Petra; White, Lisa D.
Author Affiliation(s): Primary:
San Francisco State University, Department of Geosciences, San Francisco, CA, United States
Volume Title: Geological Society of America, 2009 annual meeting
Source: Abstracts with Programs - Geological Society of America, 41(7), p.274; Geological Society of America, 2009 annual meeting, Portland, OR, Oct. 18-21, 2009. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0016-7592 CODEN: GAAPBC
Note: In English
Summary: A declining zooplankton population and a deepening thermocline off the California Coast have been linked to anthropogenic climate change. One way to understand these changes is to examine how upwelling and productivity changed during the early Pliocene--the most recent time in Earth's history that global temperatures were warmer than they are today for a sustained period of time. ODP Site 1022 off of Cape Mendocino, California provides a record of Northern California coastal climate and ecology. The alkenone organic proxy provides an estimate of sea surface temperature ∼1.6°C greater than modern averages. However, initial results from diatom assemblages indicate persistence of upwelling-dominating species despite warmer surface waters. My continued study aims to reconcile the persistence of primary producers during the Pliocene warm period with possible applications to the modern California coastal ecosystem as it reacts to anthropogenic climate change.
Year of Publication: 2009
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; California; Cenozoic; East Pacific; Leg 167; Lower Pliocene; Neogene; North Pacific; Northeast Pacific; Northern California; ODP Site 1022; Ocean Drilling Program; Pacific Ocean; Paleo-oceanography; Paleoclimatology; Paleoecology; Pliocene; Sea-surface temperature; Tertiary; United States; Upwelling
Coordinates: N400451 N400451 W1252034 W1252034
Record ID: 2010099452
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States