期刊
GEOPHYSICAL RESEARCH LETTERS
卷 47, 期 4, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2019GL085814
关键词
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资金
- Natural Environment Research Council [NE/G003440/1, 1490.0810, 1566.0511, 1604.0112]
- University of Siegen within the PEPSEA project
- National Science Foundation [OCE-1558966, OCE-1834739]
- International Space Science Institute (ISSI
- Bern, Switzerland)
- NERC [NE/G003440/1] Funding Source: UKRI
The Atlantic coast of North America north of Cape Hatteras has been proposed as a hotspot of late 20th century sea-level rise. Here we test, using salt-marsh proxy sea-level records, if this coast experienced enhanced sea-level rise over earlier multidecadal-centennial periods. While we find in agreement with previous studies that 20th century rates of sea-level change were higher compared to rates during preceding centuries, rates of 18th century sea-level rise were only slightly lower, suggesting that the hotspot is a reoccurring feature for at least three centuries. Proxy sea-level records from North America (Iceland) are negatively (positively) correlated with centennial changes in the North Atlantic Oscillation. They are consistent with sea-level fingerprints of Arctic ice melt, and we therefore hypothesize that sea-level fluctuations are related to changes in Arctic land-ice mass. Predictions of future sea-level rise should take into account these long-term fluctuating rates of natural sea-level change.
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