{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,24]],"date-time":"2025-10-24T07:57:50Z","timestamp":1761292670230,"version":"3.41.2"},"reference-count":52,"publisher":"American Geophysical Union (AGU)","issue":"4","license":[{"start":{"date-parts":[[2009,12,12]],"date-time":"2009-12-12T00:00:00Z","timestamp":1260576000000},"content-version":"vor","delay-in-days":11,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Paleoceanography"],"published-print":{"date-parts":[[2009,12]]},"abstract":"<jats:p>Diatom assemblages document surface hydrographic changes over the Bermuda Rise. Between 19.2 and 14.5 ka, subtropical diatom species and <jats:italic>Chaetoceros<\/jats:italic> resting spores dominate the flora, as in North Atlantic productive regions today. From 16.9 to 14.6 ka, brackish and fresh water diatoms are common and their contribution is generally coupled with total diatom abundance. This same interval also contains rare grains of ice\u2010rafted debris. Coupling between those proxies suggests that successive discharge of icebergs might have stimulated productivity during Heinrich event 1 (H1). Iceberg migration to the subtropics likely created an isolated environment involving turbulent mixing, upwelled water, and nutrient\u2010rich meltwater, supporting diatom productivity in an otherwise oligotrophic setting. In addition, the occurrence of mode water eddies likely brought silica\u2010rich waters of Southern Ocean origin to the euphotic zone. The persistence of lower\u2010salinity surface water beyond the last ice rafting suggests continued injection of fresh water by cold\u2010core rings and advection around the subtropical gyre. These results indicate that opal productivity may have biased estimates of meridional overturning based on <jats:sup>231<\/jats:sup>Pa\/<jats:sup>230<\/jats:sup>Th ratios in Bermuda Rise sediments during H1.<\/jats:p>","DOI":"10.1029\/2008pa001729","type":"journal-article","created":{"date-parts":[[2009,12,11]],"date-time":"2009-12-11T21:00:21Z","timestamp":1260565221000},"source":"Crossref","is-referenced-by-count":35,"title":["Deglacial diatom productivity and surface ocean properties over the Bermuda Rise, northeast Sargasso Sea"],"prefix":"10.1029","volume":"24","author":[{"given":"Isabelle M.","family":"Gil","sequence":"first","affiliation":[{"name":"Marine Geology Department LNEG  Alfragide Portugal"},{"name":"Woods Hole Oceanographic Institution  Woods Hole Massachusetts USA"},{"name":"CIMAR Associate Laboratory  Porto Portugal"}]},{"given":"Lloyd D.","family":"Keigwin","sequence":"additional","affiliation":[{"name":"Woods Hole Oceanographic Institution  Woods Hole Massachusetts USA"}]},{"given":"Fatima G.","family":"Abrantes","sequence":"additional","affiliation":[{"name":"Marine Geology Department LNEG  Alfragide Portugal"}]}],"member":"13","published-online":{"date-parts":[[2009,12,12]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0012\u2010821X(99)00312\u2010X"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0967\u20100637(00)00041\u20108"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0012\u2010821X(03)00039\u20106"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dsr.2004.05.012"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1029\/2002PA000846"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.1167441"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.2307\/1484218"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.3354\/meps039165"},{"key":"e_1_2_8_10_1","unstructured":"Benetti S.(2006) Late Quaternary sedimentary processes along the western North Atlantic margin Ph.D. thesis 188 pp. Univ. of Southampton Southampton U. 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