MIT Libraries homeMIT Libraries logoDSpace@MIT

MIT
View Item 
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
  • DSpace@MIT Home
  • MIT Open Access Articles
  • MIT Open Access Articles
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Monsoon-driven Saharan dust variability over the past 240,000 years

Author(s)
Skonieczny, C.; McGee, David; Winckler, G.; Bory, A.; Bradtmiller, L. I.; Kinsley, Christopher William; Polissar, P. J.; De Pol-Holz, R.; Rossignol, L.; Malaizé, B.; ... Show more Show less
Thumbnail
Downloadeaav1887.full.pdf (2.048Mb)
Terms of use
Creative Commons Attribution NonCommercial License 4.0 https://creativecommons.org/licenses/by-nc/4.0/
Metadata
Show full item record
Abstract
Reconstructions of past Saharan dust deposition in marine sediments provide foundational records of North African climate over time scales of 103 to 106 years. Previous dust records show primarily glacial-interglacial variability in the Pleistocene, in contrast to other monsoon records showing strong precessional variability. Here, we present the first Saharan dust record spanning multiple glacial cycles obtained using 230Th normalization, an improved method of calculating fluxes. Contrary to previous data, our record from the West African margin demonstrates high correlation with summer insolation and limited glacial-interglacial changes, indicating coherent variability in the African monsoon belt throughout the late Pleistocene. Our results demonstrate that low-latitude Saharan dust emissions do not vary synchronously with high- and mid-latitude dust emissions, and they call into question the use of existing Plio-Pleistocene dust records to investigate links between climate and hominid evolution. ©2019
Date issued
2019-01
URI
https://hdl.handle.net/1721.1/124920
Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Journal
Science Advances
Publisher
American Association for the Advancement of Science (AAAS)
Citation
Skonieczny, C., et al., "Monsoon-driven Saharan dust variability over the past 240,000 years." Science Advances 5, 1 (2019): no. eaav1887 doi 10.1126/sciadv.aav1887 ©2019 Author(s)
Version: Final published version
ISSN
2375-2548

Collections
  • MIT Open Access Articles

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

OA StatisticsStatistics by CountryStatistics by Department
MIT Libraries homeMIT Libraries logo

Find us on

Twitter Facebook Instagram YouTube RSS

MIT Libraries navigation

SearchHours & locationsBorrow & requestResearch supportAbout us
PrivacyPermissionsAccessibility
MIT
Massachusetts Institute of Technology
Content created by the MIT Libraries, CC BY-NC unless otherwise noted. Notify us about copyright concerns.