Associate Professor, Paleoclimatology/Paleolimnology
Phone: 562 985-4817
Fax: 562 985-8638
1250 Bellflower Blvd
Long Beach, CA 90840-3902
Ph.D., University of Minnesota, 1997
B.A., Pomona College, 1989
My research involves the reconstruction of past climatic change using geochemical signatures archived in lake sediments. I focus on the oxygen-isotopic composition of endogenic carbonates as a proxy for hydrologic variability, although I utilize a suite of proxies that include biogenic silica concentrations, grain-size variations, C/N ratios, and mineralogy. I study the evolution and variability of a variety of climatic phenomena including the PDO (as it affects western North America), the Southeast Asian monsoon, seasonal changes in atmospheric precipitation in the Mediterranean region, and drought. I specialize in high-frequency (sub-decadal) records derived from annually laminated sediments.
Current Research Projects: Montana, Iran, Vietnam, Egypt (Birket Qarun)
General Geology (GEOL 102), Introduction to Oceanography (GEOL 106), Earth Systems & Global Change (GEOL 300i), Environmental Science & Policy Capstone Project (ESP 400), Climate & Human History (TBA), Biogeochemical Cycles (TBA).