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James H. Foster Faculty

James H. Foster
Associate Researcher

Ph.D., University of Hawaii at Manoa, 2002

Email: jfoster@soest.hawaii.edu
Office: POST 818A
Phone Number: (808) 956-7875
Fax Number: (808) 956-3188

University of Hawai'i at Manoa
Hawa'`i Institute of Geophysics and Planetology
1680 East-West Road, POST 602
Honolulu, HI 96822

Research Interests:
Geodesy, GPS meteorology and the impact and mitigation of the atmosphere on space geodetic measurements

  • Investigating the potential of a high resolution weather model for the prediction and mitigation of atmospheric delays in Interferometric Synthetic Aperture Radar. Artifacts in InSAR images caused by changes in the distribution of water vapor in the atmosphere make the identification of real tectonic and volcanological ground motions very difficult. I am exploring the possibility of using predictions from the MM5 weather model run by the Mauna Kea Weather Center (http://mkwc.ifa.hawaii.edu) to improve our ability to isolate deformation signals in InSAR images.

  • Studying the deformation of Kilauea and Mauna Loa volcanoes using GPS and InSAR.The Pacific GPS Facility installed and maintains a network of 18 GPS receivers located on Kilauea and Mauna Loa on the Island of Hawaii. Both these volcanoes are actively deforming and Mauna Loa is expected to erupt in the near future -- for the first time since the GPS system began operating.

  • Using GPS to provide high-accuracy estimates of water vapor in the atmosphere.Water vapor is one of the most important, and most difficult to predict, parameters for weather analysis and prediction, as well as for climate change. GPS provides a cheap way to obtain valuable data that can help improve weather model predictions and climatological analysis.

Relevant Links:

Publications Link:  http://www.soest.hawaii.edu/pgf/publications.shtml

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