Jon D. Pelletier                                                         Assistant Professor Department of Geosciences University of Arizona 1040 E. Fourth St. Tucson, AZ 85721 520-626-2126 jon@geo.arizona.edu curriculum vitae

Landforms on Earth's surface are sculpted by flowing water in the form of rivers and glaciers and by the wind and windborne particles. My work seeks to understand the intrinsic feedbacks between landforms on Earth's surface and the fluid flow above the surface which creates these self-organized patterns. I focus on computer modeling and in the integration of model results with field and remote-sensing data.

Active research projects:

• Dust emission and deposition from playas
• Spiral troughs on Mars
• Formation of oriented thaw lakes
  
• Quaternary landscape evolution in Cuyama Valley, CA (led by S. DeLong)
  
• Oscillations in arid alluvial channels
• Drainage basin evolution
• Experiments in the Rainfall Erosion Facility
• Quaternary evolution of alluvial fans in the Southwest U.S.
• Quaternary dating of terraces with scarp evolution
• Flexural modeling in response to glacial erosion in the western U.S.
• Coherence resonance and ice ages
  
• Controls on soils formation and modern calibration for paleoclimates
  

Geomorphology group members at UA:

• Jon Pelletier
• Stephen DeLong
• Michael Cline
• Graduates: Jason Barnes, Leslie Hsu, Jim Morrison
  

Further information about the group and its research can be obtained from Jon Pelletier and from these links:

• Geos 450/550: Introduction to Geomorphology
• Geomorphology bibliographies