Scraping Bottom: Iceberg Scours Reveal North Atlantic Currents
نویسندگان
چکیده
منابع مشابه
Buried iceberg scours reveal reduced North Atlantic Current during the stage 12 deglacial
Reconstructing past ocean-climate environments and heat transport requires proxies from which these conditions can be quantified. This is particularly important for the evaluation of numerical palaeoclimate models. Here we present new evidence for a reduced North Atlantic Current (NAC) at the termination of the third last glacial, for which palaeocurrent information was previously unavailable. ...
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Abrupt centennial-to-millennial shifts inNorthernHemisphere climate during the last deglaciation are thought to have been triggered by the discharge of large volumes of meltwater and icebergs to the subpolar North Atlantic1. Here we show that meltwater and icebergswere also transporteddirectly from the Laurentide icemargin to the subtropicalNorthAtlantic in a narrow coastal current. We present ...
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[1] Estimates of the dissipation of subinertial currents due to bottom boundary layer drag at the eastern and western boundaries of the North Atlantic ocean, between 15 N and 60 N, are computed using data from the world’s largest archive of ocean current meter time series. We show from these data that a significant proportion of such loss in this region is due to dissipation at the western boun...
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In 1912 Prof. Pierre Termier, the director of the Geological Survey of France, delivered before the Oceanographic Institute of Paris a very interesting and stimulating lecture on the probable existence of Plato's Atlantis. This lecture is now published in English in the Annual Report of the Smithsonian Institution for 1915 (1916), pages 219-234. In his lecture the speaker drew a conclusion that...
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Four versions of the same global climate model, one with horizontal resolution of 1.8◦×3.6◦ and three with 0.2◦×0.4◦, are employed to evaluate the role of ocean bottom topography and viscosity on the spatial structure of the deep circulation. This study is motivated by several recent observational studies that find subsurface floats injected near the western boundary of the Labrador Sea most of...
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ژورنال
عنوان ژورنال: Eos
سال: 2018
ISSN: 2324-9250
DOI: 10.1029/2018eo101879