GSTDTAP  > 气候变化
DOI10.1029/2018GL080890
The Mighty Susquehanna-Extreme Floods in Eastern North America During the Past Two Millennia
Toomey, Michael1; Cantwell, Meagan2; Colman, Steven3; Cronin, Thomas1; Donnelly, Jeffrey3; Giosan, Liviu3; Heil, Clifford4; Korty, Robert5; Marot, Marci6; Willard, Debra1
2019-03-28
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2019
卷号46期号:6页码:3398-3407
文章类型Article
语种英语
国家USA
英文摘要

The hazards posed by infrequent major floods to communities along the Susquehanna River and the ecological health of Chesapeake Bay remain largely unconstrained due to the short length of streamgage records. Here we develop a history of high-flow events on the Susquehanna River during the late Holocene from flood deposits contained in MD99-2209, a sediment core recovered in 26m of water from Chesapeake Bay near Annapolis, Maryland, United States. We identify coarse-grained deposits left by Hurricane Agnes (1972) and the Great Flood of 1936, as well as during three intervals that predate instrumental flood records (similar to 1800-1500, 1300-1100, and 400-0CE). Comparison to sedimentary proxy data (pollen and ostracode Mg/Ca ratios) from the same core site indicates that prehistoric flooding on the Susquehanna often accompanied cooler-than-usual winter/spring temperatures near Chesapeake Baytypical of negative phases of the North Atlantic Oscillation and conditions thought to foster hurricane landfalls along the East Coast.


Plain Language Summary Despite the vulnerability of many mid-Atlantic cities to flooding, including Washington D.C., few long-term records exist to assess the risks posed by extreme, infrequent, storm events. Here we document recent and prehistoric floods on the Susquehanna River, which has the largest watershed on the U.S. Eastern Seaboard, using sediment cores collected from Chesapeake Bay. Our analysis finds that much of the Susquehanna's observed centennial-millennial scale flood variability may be driven by the frequency of hurricane landfalls along the U.S. East Coast.


英文关键词hurricane flood Holocene east coast river Chesapeake
领域气候变化
收录类别SCI-E
WOS记录号WOS:000464650400042
WOS关键词HOLOCENE CLIMATE VARIABILITY ; UPPER CHESAPEAKE BAY ; ATLANTIC OSCILLATION ; SEDIMENT ACCUMULATION ; ESTUARINE SEDIMENTS ; TROPICAL STORMS ; ICE-AGE ; HISTORY ; RIVER ; PALEOFLOODS
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/181789
专题气候变化
作者单位1.US Geol Survey, Florence Bascom Geosci Ctr, 959 Natl Ctr, Reston, VA 22092 USA;
2.Coll William & Mary, Dept Geol, Williamsburg, VA USA;
3.Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA;
4.Univ Rhode Isl, Grad Sch Oceanog, Narragansett, RI 02882 USA;
5.Texas A&M Univ, Dept Atmospher Sci, College Stn, TX USA;
6.US Geol Survey, St Petersburg Coastal & Marine Sci Ctr, St Petersburg, FL USA
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Toomey, Michael,Cantwell, Meagan,Colman, Steven,et al. The Mighty Susquehanna-Extreme Floods in Eastern North America During the Past Two Millennia[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(6):3398-3407.
APA Toomey, Michael.,Cantwell, Meagan.,Colman, Steven.,Cronin, Thomas.,Donnelly, Jeffrey.,...&Willard, Debra.(2019).The Mighty Susquehanna-Extreme Floods in Eastern North America During the Past Two Millennia.GEOPHYSICAL RESEARCH LETTERS,46(6),3398-3407.
MLA Toomey, Michael,et al."The Mighty Susquehanna-Extreme Floods in Eastern North America During the Past Two Millennia".GEOPHYSICAL RESEARCH LETTERS 46.6(2019):3398-3407.
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