Chercheurs

Sciences de la Terre / ALLEY, RICHARD B.

ralley

Position

Glaciologist,
Professor of Geosciences at the Pennsylvania State University, United States.

Thèmes de recherche

- Glaciology, ice sheet stability, paleoclimates from ice cores

Dr. Alley's current research interests are with ice sheets and climates, and include the following:
- Interpretation of paleoclimatic records from ice cores
- Abrupt climate changes
- Physical properties of ice cores
- Ice-sheet collapse and sea-level change
- Erosion and sedimentation by ice sheets

Dr. Alley teaches, and conducts research on the climatic records, flow behavior, and sedimentary deposits of large ice sheets, to aid in prediction of future changes in climate and sea level.

Field Experience :
Three seasons in Antarctica
Five seasons in Greenland

Expertise :
Ice-core records of climate change
Mechanisms of abrupt climate changes
Ice-sheet mass-balance and sea-level change
Glacier-bed processes and glacial deposits
Ice physical properties

Prix et récompenses

Faculty Scholar Medal, Penn State
Wilson Teaching Award, Earth and Mineral Sciences, Penn State
Fellow, American Geophysical Union
Horton Award, Hydrology Section, American Geophysical Union
D.&L. Packard Fellowship
Presidential Young Investigator

Publications

Alley, R. B., et al. Holocene climatic instability: Aprominent, widespread evein 8200 years ago. Geology 25(6):483-6, 1997.

Fischer, M., R. B. Alley, and T. Engelder. Fracture toughness of ice and firm determined from the modified ring test. J. Glaciol, 41:383-94, 1995.

Alley, R. B., and D. R. MacAyeal. Ice rafted debris associated with binge/purge oscillations of the Laurentide ice sheet. Paleoceanography, 9(4):503-11, 1994.

Alley, R.B., et al. Abrupt increase in snow accumulation at the end of the Younger Dryas event. Nature, 362:527-9, 1993.

Alley, R.B., D.E. Lawson, E.B.E. Evenson, J.C. Strasser and G.J. Larson. Glaciohydraulic supercooling: A freeze-on mechanism to create stratified, debris-rich basal ice. 2. Theory. Journal of Glaciology, 44 (148), 563-569, 1998.

Alley, R.B., and P.U. Clark. The deglaciation of the northern hemisphere: a global perspective Annual Reviews of Earth and Planetary Sciences 27, 149-182, 1999.