eprintid: 10205595
rev_number: 7
eprint_status: archive
userid: 699
dir: disk0/10/20/55/95
datestamp: 2025-03-04 14:25:54
lastmod: 2025-03-04 14:25:54
status_changed: 2025-03-04 14:25:54
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Barker, Stephen
creators_name: Lisiecki, Lorraine E
creators_name: Knorr, Gregor
creators_name: Nuber, Sophie
creators_name: Tzedakis, Polychronis C
title: Distinct roles for precession, obliquity, and eccentricity in Pleistocene 100-kyr glacial cycles
ispublished: pub
divisions: UCL
divisions: B03
divisions: C03
divisions: F26
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions.
abstract: Identifying the specific roles of precession, obliquity, and eccentricity in glacial-interglacial transitions is hindered by imprecise age control. We circumvent this problem by focusing on the morphology of deglaciation and inception, which we show depends strongly on the relative phasing of precession versus obliquity. We demonstrate that although both parameters are important, precession has more influence on deglacial onset, whereas obliquity is more important for the attainment of peak interglacial conditions and glacial inception. We find that the set of precession peaks (minima) responsible for terminations since 0.9 million years ago is a subset of those peaks that begin (i.e., the precession parameter starts decreasing) while obliquity is increasing. Specifically, termination occurs with the first of these candidate peaks to occur after each eccentricity minimum. Thus, the gross morphology of 100-thousand-year (100-kyr) glacial cycles appears largely deterministic.
date: 2025
date_type: published
publisher: American Association for the Advancement of Science (AAAS)
official_url: https://doi.org/10.1126/science.adp3491
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2365696
doi: 10.1126/science.adp3491
medium: Print-Electronic
lyricists_name: Tzedakis, Polychronis
lyricists_id: PCTZE15
actors_name: Tzedakis, Polychronis
actors_id: PCTZE15
actors_role: owner
full_text_status: public
publication: Science
volume: 387
number: 6737
article_number: eadp3491
event_location: United States
citation:        Barker, Stephen;    Lisiecki, Lorraine E;    Knorr, Gregor;    Nuber, Sophie;    Tzedakis, Polychronis C;      (2025)    Distinct roles for precession, obliquity, and eccentricity in Pleistocene 100-kyr glacial cycles.                   Science , 387  (6737)    , Article eadp3491.  10.1126/science.adp3491 <https://doi.org/10.1126/science.adp3491>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10205595/1/Barker%20et%20al_Revised_Round%202_combined.pdf