Jason Addison

Citizenship: American

Graduated university: University of Alaska Fairbanks

Occupation: Research Geologist

Research Interests：

He is a paleoceanographer, trained to use geochemical proxies to reconstruct past ocean conditions. His primary interest is in how past climates have affected ocean ecosystems in the North Pacific Ocean during the Holocene (the last 11,700 years). His study areas are primarily in the subarctic North Pacific Ocean [the Gulf of Alaska, the Bering Sea, and the Sea of Okhotsk], but he also work along the California margin and in the Gulf of California.

Specific geochemical and geophysical tools he use to reconstruct past ocean ecosystem productivity and environmental conditions include: organic carbon, CaCO3, and biogenic silica concentrations; organic matter (C & N) stable isotope ratios; inorganic trace metal data; 3-D computerized tomography (CT) scanning; core-scanning XRF; and multivariate statistical analyses. In addition, he also use a combination of radiocarbon dating, tephrochronology (the identification and dating of volcanic ash deposits), and varve counts to develop robust age-depth models in marine sediment cores.