(Table S1) Age determination of ODP Site 202-1240

Interannual-decadal variability in the equatorial Pacific El Niño-Southern Oscillation (ENSO) induces climate changes at global scale, but its potential influence during past global climate change is not yet well constrained. New high-resolution eastern equatorial Pacific proxy records of thermoclin...

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Bibliographic Details
Main Authors: Pena, Leopoldo D, Cacho, Isabel, Ferretti, Patrizia, Hall, Michael A
Format: Dataset
Language:English
Published: PANGAEA 2008
Subjects:
202-1240
Age
14C AMS
comment
dated
dated standard deviation
Age model
COMPCORE
Composite Core
DEPTH
sediment/rock
Equatorial East Pacific
Joides Resolution
Laboratory code/label
Leg202
Ocean Drilling Program
ODP
Antarctic
Pacific
Antarc*
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.832117
https://doi.org/10.1594/PANGAEA.832117
Description
Summary:Interannual-decadal variability in the equatorial Pacific El Niño-Southern Oscillation (ENSO) induces climate changes at global scale, but its potential influence during past global climate change is not yet well constrained. New high-resolution eastern equatorial Pacific proxy records of thermocline conditions present new evidence of strong orbital control in ENSO-like variability over the last 275,000 years. Recurrent intervals of saltier thermocline waters are associated with the dominance of La Niña-like conditions during glacial terminations, coinciding with periods of low precession and high obliquity. The parallel dominance of d13C-depleted waters supports the advection of Antarctic origin waters toward the tropical thermocline. This "oceanic tunneling" is proposed to have reinforced orbitally induced changes in ENSO-like variability, composing a complex high- and low-latitude feedback during glacial terminations.

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