Jeffrey Kennedy, PhD


My research focuses on measuring and interpreting small changes in gravity as they relate to the hydrology of alluvial basins in the southwestern U.S. Current projects focus on the hydrology of the lower Colorado River, namely the lining of the All American Canal and environmental flood releases in the Colorado River Delta related to Minute 319.

As the geophysics specialist at the Arizona Water Science Center, I oversee the Southwest Gravity Program, a joint effort of the New Mexico and Arizona Water Science Centers to collect high-quality, hydrologically-useful repeat microgravity data throughout the western U.S. More information, including a complete bibliography, is at the Arizona Water Science Center's Gravity Webpage.


Major abstracts and presentations

Bell, M., Kahler, L., Kennedy, J., Robertson, A., 2019, A Microgravity Pilot Study: Insights into Storage Change, Specific Yield, and Groundwater/Surface Water Interaction in the Mesilla Groundwater Basin, New Mexico. American Geophysical Union Fall Meeting, Dec. 9-13, San Francisco, CA

Kennedy, J., Van Westrum, D. 2019, Comparing approaches to network design and drift correction for relative-gravity surveys, American Geophysical Union Fall Meeting, Dec. 9-13, San Francisco, CA

Kennedy, J., 2019, Using cosmic-ray soil neutron sensing to separate changes in soil moisture from aquifer-storage change in gravity data, International Union of Geodesy and Geophysics General Assembly, July 8-18, Montreal, Canada.

Kennedy, J., 2018, Hydro-gravity signals, from large to small, First workshop on the international geodynamics and Earth tide service, June 18-20, Potsdam, Germany.

Kennedy, J., Macy, J., 2017, Non-invasive water-table imaging with joint DC-resistivity/microgravity/hydrologic model inversion, AGU Fall Meeting, Dec. 11-15, New Orleans, LA, Abstract NS11A-01

Kennedy, J., Bell, M., Norton, S., 2017, Using time-lapse gravity to monitor storage-change during a groundwater injection test in Albuquerque, NM, Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP 2017), Denver, CO, Mar. 20-22. 

Pool, D.R., J. Kennedy, P. MacQueen, and T.M. Neibauer, 2016, Hydrologic Interpretations of Long-Term Gravity Records at Tucson, Arizona, AGU Fall Meeting, Dec. 12-16, San Francisco, CA. Abstract H42D-06.

Kennedy, J., Ramirez-Hernandez, J., and E. Rodriguez Burgueño, 2015, Experimental Floods in a Time of Drought: The 2014 Pulse Flow in the Lower Colorado River, Arizona, USA, and Mexico, AGU Fall Meeting, Abstract H21B-1356.

Kennedy, J., and Ferré, T., 2014, Too Fast to Measure: Network Adjustment of Rapidly Changing Gravity Fields: AGU Fall Meeting, Dec. 15-19, San Francisco, CA. Abstract 43C-02

Kennedy, J., Ferré, T.P., Abe, M., and Güntner, A., 2013, Increased accuracy through variable-baseline gradient measurements with multiple superconducting gravimeters: AGU Fall Meeting, Dec. 9–13, San Francisco, CA. Abstract G11A-0906

Kennedy, J.,  Ferré, T., Creutzfeldt, B., Güntner, A., Neumeyer, J., Brinton, E., and Warburton, R., 2013, Smaller is better: first experiences using the iGrav superconducting gravimeter in a field enclosure. 17th International Symposium on Earth Tides, Apr. 1519, Warsaw, Poland.

Creutzfeldt, B., J. Kennedy, and P. A. Ferré., 2012, Water-storage change measured with high-precision gravimetry at a groundwater recharge facility in Tucson, USA (Invited): AGU Fall Meeting, Dec. 37, San Francisco, CA. Abstract NS44A-02

Kennedy, J., B. Creutzfeldt, and P.A. Ferré., 2012, Monitoring vadose zone infiltration with time-lapse gravity data at a municipal recharge and withdrawal facility (Invited): Geological Society of America annual meeting, Nov. 47, Charlotte, NC.

Kennedy, J., Creutzfeldt, B., Ferré, P.A., and Güntner, A., 2012. Gravity-measured water storage change and subsurface hydraulic properties at a managed recharge facility in Tucson, AZ (Invited): EAGE Near Surface Meeting, Sep. 35, Paris, France.

Kennedy, J., Murdoch, L., Long, A., and Koth, K., 2011, Measuring groundwater flow at the Sanford Laboratory with coupled surface/subsurface time-lapse gravity measurements (Invited): American Geophysical Union Fall Meeting, Dec. 5–9, San Francisco, CA.  Abstract NH54A-01

Kennedy, J., Pool, D., Ferré, P.A., and Wilson, C., 2011, Using high-resolution gravity and pumping data to infer aquifer parameters: American Geophysical Union Fall Meeting, Dec. 5–9, San Francisco, CA. Abstract H43E-1273

Kennedy, J., 2009, Expanding the Usefulness of Existing Data-Collection Infrastructure with Wireless Sensor Networks: American Geophysical Union Fall Meeting, Dec. 14–18, San Francisco, CA. Abstract IN23C-1073