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PRISM3 DOT1 Atlantic Basin Reconstruction

June 21, 2006

PRISM3 DOT1 (Pliocene Research, Interpretation and Synoptic Mapping 3, Deep Ocean Temperature 1) provides a three-dimensional temperature reconstruction for the mid-Pliocene Atlantic basin, the first of several regional data sets that will comprise a global mid-Pliocene reconstruction. DOT1 is an alteration of modern temperature values for the Atlantic Ocean in 4 degree x 5 degree cells in 13 depth layers for December 1 based on Mg/Ca-derived BWT estimates from seventeen DSDP and ODP Sites and SST estimates from the PRISM2 reconstruction (Dowsett et al., 1999). DOT1 reflects a vaguely modern circulation system, assuming similar processes of deep-water formation; however, North Atlantic Deep Water (NADW) production is increased, and Antarctic Bottom Water (AABW) production is decreased. Pliocene NADW was approximately 2 degreesC warmer than modern temperatures, and Pliocene AABW was approximately 0.3 degreesC warmer than modern temperatures.

Publication Year 2006
Title PRISM3 DOT1 Atlantic Basin Reconstruction
DOI 10.3133/ds189
Authors Harry Dowsett, Marci Robinson, Gary S. Dwyer, Mark Chandler, Thomas Cronin
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Data Series
Series Number 189
Index ID ds189
Record Source USGS Publications Warehouse
USGS Organization U.S. Geological Survey