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    Coastal barrier stratigraphy for Holocene high-resolution sea-level reconstruction

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    Author
    Costas, Susana; Ferreira, Óscar; Plomaritis, Theocharis A.; Leorri, Eduardo
    Abstract
    The uncertainties surrounding present and future sea-level rise have revived the debate around sea-level changes through the deglaciation and mid- to late Holocene, from which arises a need for high-quality reconstructions of regional sea level. Here, we explore the stratigraphy of a sandy barrier to identify the best sea-level indicators and provide a new sea-level reconstruction for the central Portuguese coast over the past 6.5 ka. The selected indicators represent morphological features extracted from coastal barrier stratigraphy, beach berm and dune-beach contact. These features were mapped from high-resolution ground penetrating radar images of the subsurface and transformed into sea-level indicators through comparison with modern analogs and a chronology based on optically stimulated luminescence ages. Our reconstructions document a continuous but slow sea-level rise after 6.5 ka with an accumulated change in elevation of about 2 m. In the context of SW Europe, our results show good agreement with previous studies, including the Tagus isostatic model, with minor discrepancies that demand further improvement of regional models. This work reinforces the potential of barrier indicators to accurately reconstruct high-resolution mid- to late Holocene sea-level changes through simple approaches.
    URI
    http://hdl.handle.net/10342/8471
    Date
    2016-12-08
    Citation:
    APA:
    Costas, Susana, & Ferreira, Óscar, & Plomaritis, Theocharis A., & Leorri, Eduardo. (December 2016). Coastal barrier stratigraphy for Holocene high-resolution sea-level reconstruction. Scientific Reports, (6:1), p.. Retrieved from http://hdl.handle.net/10342/8471

    Display/Hide MLA, Chicago and APA citation formats.

    MLA:
    Costas, Susana, and Ferreira, Óscar, and Plomaritis, Theocharis A., and Leorri, Eduardo. "Coastal barrier stratigraphy for Holocene high-resolution sea-level reconstruction". Scientific Reports. 6:1. (.), December 2016. August 17, 2022. http://hdl.handle.net/10342/8471.
    Chicago:
    Costas, Susana and Ferreira, Óscar and Plomaritis, Theocharis A. and Leorri, Eduardo, "Coastal barrier stratigraphy for Holocene high-resolution sea-level reconstruction," Scientific Reports 6, no. 1 (December 2016), http://hdl.handle.net/10342/8471 (accessed August 17, 2022).
    AMA:
    Costas, Susana, Ferreira, Óscar, Plomaritis, Theocharis A., Leorri, Eduardo. Coastal barrier stratigraphy for Holocene high-resolution sea-level reconstruction. Scientific Reports. December 2016; 6(1) . http://hdl.handle.net/10342/8471. Accessed August 17, 2022.
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