Common Era sea-level budgets along the U.S. Atlantic coast

Walker, Jennifer S. and Kopp, Robert E. and Shaw, Timothy A. and Cahill, Niamh and Khan, Nicole S. and Barber, Donald C. and Ashe, Erica L. and Brain, Matthew J. and Clear, Jennifer L. and Reide Corbett, D. and Horton, Benjamin P. (2021) Common Era sea-level budgets along the U.S. Atlantic coast. Nature Communications, 12. ISSN 2041-1723

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Abstract

Sea-level budgets account for the contributions of processes driving sea-level change, but are predominantly focused on global-mean sea level and limited to the 20th and 21st centuries. Here we estimate site-specific sea-level budgets along the U.S. Atlantic coast during the Common Era (0–2000 CE) by separating relative sea-level (RSL) records into process-related signals on different spatial scales. Regional-scale, temporally linear processes driven by glacial isostatic adjustment dominate RSL change and exhibit a spatial gradient, with fastest rates of rise in southern New Jersey (1.6 ± 0.02 mm yr−1). Regional and local, temporally non-linear processes, such as ocean/atmosphere dynamics and groundwater withdrawal, contributed between −0.3 and 0.4 mm yr−1 over centennial timescales. The most significant change in the budgets is the increasing influence of the common global signal due to ice melt and thermal expansion since 1800 CE, which became a dominant contributor to RSL with a 20th century rate of 1.3 ± 0.1 mm yr−1.

Item Type: Article
Additional Information and Comments: This is the authors' version of an article that was accepted for publication in Nature Communications. The final, published version is available at: https://www.nature.com/articles/s41467-021-22079-2 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Faculty / Department: Faculty of Science > Geography and Environmental Science
Depositing User: Matthew Adams
Date Deposited: 25 Mar 2021 12:04
Last Modified: 25 Mar 2021 12:04
URI: https://hira.hope.ac.uk/id/eprint/3257

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