Planktonic foraminiferal flux seasonality in Subantarctic sediment traps: A test for paleoclimate reconstructions

摘要: Sediment trap moorings deployed during 1997 and 1998 in the Subantarctic to Polar Frontal regions of the Southern Ocean reveal distinct seasonality foraminiferal flux. Foraminiferal assemblages vary between each site, yet major species exhibit very similar patterns seasonal succession which can be associated with changes in mixed layer depth. Enhanced productivity is also periods high biogenic silica and particulate organic carbon On a broader scale, are strongly delineated by temperature. Temperature estimates derived from using modern analog technique (MAT) are mostly within 2.5 C satellite advanced resolution radiometer temperatures observed the deployment period. This indicates that core top sediments included MAT database do reflect modern observed conditions at sea surface, providing robust for estimating past temperature change from foraminiferal Southern environments.