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TitleLatitudinal response of storm activity to abrupt climate change during the last 6,500 years
 
AuthorYang, Y; Maselli, V; Normandeau, AORCID logo; Piper, D J WORCID logo; Li, M ZORCID logo; Campbell, D CORCID logo; Gregory, T; Gao, S
SourceGeophysical Research Letters vol. 47, issue 19, e2020GL089859, 2020 p. 1-12, https://doi.org/10.1029/2020GL089859
Image
Year2020
Alt SeriesNatural Resources Canada, Contribution Series 20200153
PublisherAmerican Geophysical Union
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf; html
ProvinceEastern offshore region; Nova Scotia
NTS10M; 11D; 20P; 21A/01; 21A/02; 21A/08
AreaHalifax; Atlantic Ocean; Emarald Bank; Emarald Basin; Scotian Shelf; La Have Basin; La Have Bank; Sambro Bank
Lat/Long WENS -65.0000 -62.0000 45.0000 43.0000
Subjectsmarine geology; environmental geology; surficial geology/geomorphology; sedimentology; geochronology; paleontology; Nature and Environment; Science and Technology; Holocene; oceanography; paleoclimatology; paleoenvironment; currents; current circulation; storms; climate effects; latitude; continental margins; continental shelf; marine sediments; core samples; fossils; microfossils; grain size analyses; modelling; Atlantic Meridional Overturning Circulation (AMOC); Climate change; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; geoscientific sketch maps; profiles; models; time series
ProgramMarine Geoscience for Marine Spatial Planning
Released2020 09 21
AbstractThis study examines the influence of the strength of Atlantic Meridional Overturning Circulation (AMOC) on storminess at different latitudes in the North Atlantic, based on a new 6.5-Kyr record of large storms from the Scotian Shelf (Eastern Canada) that provides the first >3.5-ka record from middle latitudes. Comparison with a compilation of other paleostorm records shows that peaks in storminess are at times synchronous (4.5-2.5 and since 0.5 ka) between low and middle latitudes but in the intervening period (2.5-0.5 ka) were latitudinally asynchronous. Synchronous (asynchronous) behavior correlates with sustained increase (decrease) of AMOC. Regime shifts in storm activity between low and middle latitudes were more frequent since 2.5 ka, related to increased frequency of abrupt climate changes. These findings indicate a latitudinal response of storm activity due to abrupt climate change, which is critical to correctly assess future storm risks along the North Atlantic coastline.
Summary(Plain Language Summary, not published)
Through the analysis of sediment cores, we show a latitudinal response of storm activity due to abrupt climate change, which is critical to correctly assess future storm risks along the North Atlantic coastline.
GEOSCAN ID326879

 
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