An important goal of the Multitracers Project is to quantify paleoproductivity (defined as organic carbon flux out of the euphotic zone) off the coast of Oregon from the peak of the last glacial maximum to the present. By accomplishing this goal the PIs will also develop paleoproductivity tracers that can be applied elsewhere in the oceans, and establish the limitations of each tracer. Three sediment trap moorings forming a transect away from the Oregon coast are a key aspect of the tracer calibration. The approach is to apply multipletracers for productivity the bulk organic fraction, inorganic elements (Cu,Zn,Ba), organic geochemical biomarkers, and microfossils to determine when all give consistent information and to determine when each begins to track paleoceanogrphic variables other than productivity. Funding is provided for an additional field season for the Multitracers Project, consisting of two 6 month trap deployments at the two inshore sites. The high-solution sediment trap data and the water column information from the springtime should enable to adequately define winter-spring productivity events in the region. In addition, the three-year time series of sediment trap fluxes will help understand the interannual variability of productivity in the California Current. This represents a modification to the previously funded project entitled "Multitracers to predict paleoproductivity in the California Current System from sediment and sediment trap materials" (OCE-8609366).

Agency
National Science Foundation (NSF)
Institute
Division of Ocean Sciences (OCE)
Application #
8911688
Program Officer
Bilal U. Haq
Project Start
Project End
Budget Start
1990-01-15
Budget End
1992-12-31
Support Year
Fiscal Year
1989
Total Cost
$213,688
Indirect Cost
Name
Oregon State University
Department
Type
DUNS #
City
Corvallis
State
OR
Country
United States
Zip Code
97331