Pena González, Leopoldo DavidCacho Lascorz, IsabelFerretti, P.Hall, M. A.2016-05-232016-05-2320080883-8305https://hdl.handle.net/2445/98757Interannual-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 δ 13C-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.8 p.application/pdfeng(c) American Geophysical Union, 2008Canvi climàticPaleoceanografiaCorrents marinsCorrent del NiñoInteracció oceà-atmosferaClimatic changePaleoceanographyOcean currentsEl Niño CurrentOcean-atmosphere interactioninfo:eu-repo/semantics/article5583712016-05-12info:eu-repo/semantics/openAccess