At NAU, I study lake sediments for climate and tephra-fall (volcanic ejecta) records. As lab manager, I assist graduate and undergraduate students and oversee analyses of sediment samples for biogenic silica content and particle size.

My Master's thesis investigated the oxygen isotopes of lake diatoms from the Prince William Sound of southern Alaska. Diatom oxygen isotopes are often related to climate because diatoms are formed in lake water that is ultimately derived from precipitation. Click here for a copy of my MS thesis.

Some other past and current research topics include: tephra-fall frequency from Alaska lake sediments, glacier retreat on Svalbard, stable isotope records from tree rings of the midwest US, and stable isotope of precipitation patterns in the Colorado Front Range.

For more information, plese review my pubilcation and conference preceedings.