English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/115259
Share/Impact:
Statistics
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Evidence for Increased Reservoir Ages and Poorly Ventilated Deep Waters in the Glacial Eastern Equatorial Pacific

AuthorsDe La Fuente, María ; Skinner, Luke C.; Calvo, Eva María ; Pelejero, Carles ; Cacho, Isabel
Issue Date16-Dec-2014
PublisherAmerican Geophysical Union
Citation2014 AGU Fall Meeting (2014)
AbstractIt has been hypothesised that a poorly ventilated deep Pacific Ocean would have contributed significantly to reduce glacial atmospheric CO2. Although radiocarbon evidence for a deglacial rise in deep Pacific ventilation so far remains conflicting, this may stem in part from surface reservoir age uncertainties and their effect on inferred deep ocean ventilation ages. Here we use chronostratigraphic calendar age constraints to estimate surface reservoir age variability, and therefore deep ventilation ages, in the Eastern Equatorial Pacific over the last 25 kyr. Both the shallow- and deep ventilation records show a deglacial decrease in glacial radiocarbon depletion, consistent with other South Pacific and Southern Ocean ventilation reconstructions where surface reservoir ages have been assessed. We propose that this basin-wide agreement can be explained by ocean interior transport pathways similar to the modern, implying significantly reduced air-sea gas exchange in the southern high latitudes during the last glacial period
Description2014 American Geophysical Union Fall Meeting, 15-19 december 2014, San Francisco
Publisher version (URL)https://agu.confex.com/agu/fm14/meetingapp.cgi#Paper/21637
URIhttp://hdl.handle.net/10261/115259
Appears in Collections:(ICM) Comunicaciones congresos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.