Lack of evidence for a substantial sea-level fluctuation within the Last Interglacial

Barlow, Natasha; McClymont, Erin L.; Whitehouse, Pippa L.; Stokes, Chris R.; Jamieson, Stewart S. R.; Woodroffe, Sarah A.; Bentley, Michael J.; Callard, S. Louise; Cofaigh, Colm Ó; Evans, David J. A.; Horrocks, J R; Lloyd, Jeremy M.; Long, Antony J.; Margold, Martin; Roberts, David H.; Sánchez-Montes, Maria Luisa

doi:10.1038/s41561-018-0195-4

Cited by 55 publications

(47 citation statements)

References 107 publications

(61 reference statements)

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“…Hearty et al, 2007;Blanchon et al, 2009;Kopp et al, 2013;O'Leary et al, 2013;Murray-Wallace and Woodroffe, 2014), although we note that other studies have disputed this (e.g. Long et al, 2015;Barlow et al, 2018). Most of our selected ESL and RSL curves do not reflect interglacial SL variability, indicating that short-wavelength peaks may be underrepresented in most SL curves and limit the number of matched terraces for the Xylokastro sequence.…”

Section: Approach Limitationsmentioning

confidence: 76%

How do sea-level curves influence modeled marine terrace sequences?

Gelder

Jara‐Muñoz

Melnick

et al. 2020

Quaternary Science Reviews

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a b s t r a c tSequences of uplifted marine terraces are widespread and reflect the interaction between climatic and tectonic processes at multiple scales, yet their analysis is typically biased by the chosen sea-level (SL) curve. Here we explore the influence of Quaternary SL curves on the geometry of marine terrace sequences using landscape evolution models (LEMs). First, we modeled the young, rapidly uplifting sequence at Xylokastro (Corinth Rift; <240 ka;~1.5 mm/yr), which allowed us to constrain terrace ages, model parameters, and best-fitting SL curves. Models that better reproduced the terraced topography used a glacio-isostatically adjusted SL curve based on coral data (for~125 ka), and a eustatic SL curve based on ice-sheet models (for~240 ka). Second, we explored the opposite end-member of older, slower uplifting sequences (2.6 Ma; 0.1e0.2 mm/yr). We find that cliff diffusion is important to model terrace sequence morphology, and that a hydraulic-model based SL curve reproduced observed terrace morphologies best. Third, we modeled the effect of SL noise with various amplitudes and wavelengths on our interpretations, finding that younger, faster uplifting sequences are less noise-sensitive and thus generally more promising for LEM studies. Our results emphasize the importance of testing a variety of SL-curves within marine terrace studies, and highlight that accurate modeling through LEMs may provide valuable insight on climatic and tectonic forcing to Quaternary coastal evolution.

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Section: Approach Limitationsmentioning

confidence: 76%

How do sea-level curves influence modeled marine terrace sequences?

Gelder

Jara‐Muñoz

Melnick

et al. 2020

Quaternary Science Reviews

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“…To confidently confirm these rapid sea-level changes at a global scale, more evidence needs to be amassed from geographically diverse sites with robust chronologies. Some recent studies have argued that a sea-level fall of >4 m, as indicated by Kopp et al (2009), is not plausible given constraints from phreatic overgrowths in Mallorca caves (Polyak et al 2018) and other lines of observational and modeling evidence (Barlow et al 2018). However, these studies do not preclude the possibility of smaller, meter-scale sea-level fluctuation(s) in the low latitude reef sites during the LIG (Fig.…”

Section: Evolution Of the Sea-level Highstandmentioning

confidence: 93%

“…The LIG sea-level highstand that persisted from ~129 to 116 thousand years (kyr) ago has long been acknowledged to be higher than present sea level, though the magnitude of peak sea level and the stability of sea level during the highstand are still actively debated (Dutton et al 2015a;Austermann et al 2017;Barlow et al 2018). While there are important differences between modern, anthropogenically-driven global warming and the orbitally driven warmth of the LIG, there are several relevant and valuable observations to be made.…”

mentioning

confidence: 99%

What do we know about Last Interglacial sea level?

2019

PAGES Mag

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“…The LIG sea-level highstand that persisted from ~129 to 116 thousand years (kyr) ago has long been acknowledged to be higher than present sea level, though the magnitude of peak sea level and the stability of sea level during the highstand are still actively debated (Dutton et al 2015a;; Barlow et al 2018). While there are important differences between modern, anthropogenically-driven global warming and the orbitally driven warmth of the LIG, there are several relevant and valuable observations to be made.…”

Section: Summary and Future Workmentioning

confidence: 99%

Untitled

2019

PAGES Mag

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PALSEA working group news This issue of Past Global Changes Magazine has been guest edited by leaders of the third phase of the highly successful PaLeo constraints on SEa level rise (PaLSEa) working group. PaLSEa is a PaGES working group and also an international focus group of the Coastal and Marine Processes commission in the International Union for Quaternary Research (INQUa). although they may have handed over the reins in January this year, the group's Phase 2 leaders have also been very active, with a special issue of Quaternary Science Reviews, titled "PaLeo constraints on SEa level rise (PaLSEa): Ice-sheet and sealevel responses to past climate warming" completed in april 2019. access all 12 articles here: pastglobalchanges.org/products/special-issues/12491-palsea-special-issue-qsr PAGES SSC and EXCOM news The annual SSC Meeting was held in addis ababa, Ethiopia, from 25-31 March 2019. The group gathers to discuss finances, current working groups, potential new working groups, workshop support applications, SSC membership, and many other important items which guide the PaGES project. For the first time, a member of PaGES Early-Career Network Steering Committee also joined. Stella alexandroff presented the network's plans and made a valuable contribution to the proceedings. an ECN representative will be invited to all future SSC Meetings. Following the meeting, SSC members and local presenters were joined by approximately 100 students at a one-day paleoscience symposium held at addis ababa University. Thanks to our SSC member asfawossen asrat, from the university's College of Natural Sciences, for organizing this successful symposium. Working group news at the end of 2018, several working groups officially came to an end. aquatic Transitions, Dust Impact on Climate and Environment (DICE), Global Soil and Sediment transfers in the anthropocene (GloSS) and Pliocene climate variability over glacial-interglacial timescales (PlioVaR) wrapped up their activities. The Warmer Worlds Integrative activity also finished. Find all former initiatives here: pastglobalchanges.org/ini/wg/former/intro a new working group, arctic Cryosphere Change and Coastal Marine Ecosystems (aCME), will be active in the coming months. The aim of this working group is to assess and refine current available marine proxies that can be used to reconstruct cryosphere changes and their ecosystem impacts. all details on how to be involved will soon be available on PaGES' website. New Science Officer and Finance and Office Manager PaGES' International Project Office in Bern recently welcomed two new staff members. Sarah Eggleston replaced Lucien von Gunten as Science Officer and alexandra Gerber replaced Brigitte Schneiter as Finance and Office Manager. Their contact details can be found here: pastglobalchanges.org/about/structure/international-project-office PAGES at INQUA 2019 Have you seen the extensive list of PaGES sessions at the 20th INQUa Congress to be held from 25-31 July 2019 in Dublin, Ireland? Working groups and SSC members are well...

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Lack of evidence for a substantial sea-level fluctuation within the Last Interglacial

Abstract: This is a repository copy of Lack of evidence for a substantial sea-level fluctuation within the Last Interglacial.

Cited by 55 publications

References 107 publications

How do sea-level curves influence modeled marine terrace sequences?

How do sea-level curves influence modeled marine terrace sequences?

What do we know about Last Interglacial sea level?

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