A Preindustrial Sea-Level Rise Hotspot Along the Atlantic Coast of North America

被引：21

作者：

Gehrels, W. R. ^{[1
]}

Dangendorf, S. ^{[2
,3
]}

Barlow, N. L. M. ^{[4
]}

Saher, M. H. ^{[5
]}

Long, A. J. ^{[6
]}

Woodworth, P. L. ^{[7
]}

Piecuch, C. G. ^{[8
]}

Berk, K. ^{[9
]}

机构：

[1] Univ York, Dept Environm & Geog, York, N Yorkshire, England

[2] Old Dominion Univ, Dept Ocean Earth & Atmospher Sci, Ctr Coastal Phys Oceanog, Norfolk, VA USA

[3] Univ Siegen, Res Inst Water & Environm, Siegen, Germany

[4] Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England

[5] Bangor Univ, Sch Ocean Sci, Anglesey, England

[6] Univ Durham, Dept Geog, Durham, England

[7] Natl Oceanog Ctr, Liverpool, Merseyside, England

[8] Woods Hole Oceanog Inst, Phys Oceanog Dept, Woods Hole, MA 02543 USA

[9] Univ Siegen, Dept Math, Siegen, Germany

来源：

GEOPHYSICAL RESEARCH LETTERS | 2020年 / 47卷 / 04期

基金：

英国自然环境研究理事会; 美国国家科学基金会;

关键词：

SALT-MARSH; SEDIMENT ACCUMULATION; LAKE-SEDIMENTS; MASS-BALANCE; NOVA-SCOTIA; EAST-COAST; C-14; DATES; VARIABILITY; OSCILLATION; MAINE;

D O I：

10.1029/2019GL085814

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

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.

引用

页数：12

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