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https://doi.org/10.5194/essd-2020-349
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-2020-349
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Preprints

  23 Nov 2020

23 Nov 2020

Review status: this preprint is currently under review for the journal ESSD.

Last Interglacial sea-level proxies in East Africa and the Western Indian Ocean

Patrick Boyden1, Jennifer Weil-Accardo2, Pierre Deschamps2, Davide Oppo3, and Alessio Rovere1 Patrick Boyden et al.
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  • 1MARUM - Center for Marine Environmental Sciences, University of Bremen, Germany
  • 2Aix Marseille Université, CNRS, IRD, Collège de France, CEREGE, France
  • 3Sedimentary Basins Research Group, School of Geosciences, University of Louisiana at Lafayette, USA
Received: 17 Nov 2020 – Accepted for review: 20 Nov 2020 – Discussion started: 23 Nov 2020

Abstract. In this paper, we describe a sea-level database compiled using published Last Interglacial, Marine Isotopic Stage 5 (MIS 5), geological sea-level proxies within Eastern Africa and the Western Indian Ocean (EAWIO). Encompassing vast tropical coastlines and coralline islands, this region has many occurrences of well preserved last interglacial stratigraphies. Most notably, islands almost entirely composed by Pleistocene reefs (such as Aldabra, the Seychelles) have provided reliable paleo relative sea-level indicators and well-preserved samples for U-series chronology. Other sea-level proxies include uplifted marine terraces in the north of Somalia and tidal notches in luminescence limited aeolian deposits in Mozambique. Our database has been compiled using the World Atlas of Last Interglacial Shorelines (WALIS) interface and contains 57 sea-level indicators and 2 terrestrial limiting data points. The database is available open access at https://doi.org/10.5281/zenodo.4043366 (Version 1.02) (Boyden et al., 2020).

How to cite. Boyden, P., Weil-Accardo, J., Deschamps, P., Oppo, D., and Rovere, A.: Last Interglacial sea-level proxies in East Africa and the Western Indian Ocean, Earth Syst. Sci. Data Discuss. [preprint], https://doi.org/10.5194/essd-2020-349, in review, 2020.

Patrick Boyden et al.

 
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Patrick Boyden et al.

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Database of last interglacial sea level proxies in the East Africa and Western Indian Ocean Region Patrick Boyden, Jennifer Weil-Accardo, Pierre Deschamps, Davide Oppo, and Alessio Rovere https://doi.org/10.5281/zenodo.4275634

Patrick Boyden et al.

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WALIS – the World Atlas of Last Interglacial...
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Short summary
Sea levels during the Last Interglacial (130 to 73 ka) are seen as possible process analogues for a future sea-level rise scenarios as our world warms. To this end we catalogue previously published ancient shoreline elevations and chronologies in a standardized data format for East Africa and the Western Indian Ocean region. These entries were then contributed to the greater World Atlas of Last Interglacial Shorelines database.
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