AMOCINT - ATLANTIC MERIDIONAL OVERTURNING CIRCULATION DURING INTERGLACIALS (PROJ. EUROMARC/0002/2007)

resumo

AMOCINT aims to decipher the spatial and temporal structure of the interglacial peaks and demises in the Northern Atlantic and their timing with forcing variations. The project will provide multiproxy data sets to correlate land and ocean climate records and forcings, focusing in particular on two prominent interglacials events. Lags and leads of the different forcing mechanisms and the respective thresholds will be quantified with a century-scale resolution. Through these studies the groundwork will be laid to justify coring the complete suite of interglacials over the past one million years through a future IODP proposal to be submitted. The main objectives of AMOCINT will be to survey and core sites for sampling of high sedimentation rate interglacial sections, to conduct detailed site surveys to recover thick marine sediment sections over past interglacials, and to provide a feasibility study based on already available cores from IMAGES cruises and new cores taken within this project.

AMOCINT main objectives:

  1. Survey and core sites for sampling of high sedimentation rate interglacial sections available to the Calypso coring system of the RV Marion Dufresne.
  2. Conduct detailed site surveys for targeted IODP drilling to recover thick marine sediment sections over past interglacials at key locations for monitoring Atlantic Meridional Overturning Circulation variability.
  3. Provide a feasibility study based on already available Calypso Cores and new cores taken within AMOCINT: Produce time series of North Atlantic circulation parameters with century scale resolution for the last interglacial and previous interglacials over the past 800 ky and provide detailed comparisons with ice core records. 
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