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I am a Research Geophysicist in the Geomagnetism Program of the U.S. Geological Survey (USGS). My research has encompassed a variety of subjects related to the Earth’s magnetic field.
These days, I work in collaboration with colleagues on three subjects: 1. Using geomagnetic monitoring data and magnetotelluric survey data to evaluate geoelectric hazards of concern to the electric-power grid industry. 2. Statistical analysis of the rare occurrences of extremely intense magnetic storms. 3. Analysis of historical records of past space-weather events and their impacts.
Research theme: Geomagnetic Hazards
Magnetic storms; Solar-terrestrial interaction; Magnetotellurics; Induced geoelectric fields; Space climatology; Geophysical monitoring; Rare, extreme, historical geophysical events; Earthquake prediction; Hypothesis testing; Time series analysis; Statistical analysis
USGS, Golden, CO, Research Geophysicist, Advisor for Geomagnetic Research, 2006 - Present
Institut de Physique du Globe de Paris, Universite Paris Diderot, France, Visiting Professor, September 2015
Institut de Physique du Globe de Paris, Universite Paris Diderot, France, Visiting Research Scientist, October 2012
USGS, Golden, CO, Supervisory Research Geophysicist, Geomagnetism Group Leader, 20
Harvard University, Geophysics, Ph.D. 1993
University of California, Berkeley, Physics and Applied Mathematics, A.B. 1985
Space Weather Operations Response and Mitigation (SWORM) of the National Science and Technology Council, 2015 - Present
Electromagnetic Pulse Research and Development (EMPRAD) of the National Science
While major geomagnetic storms are rare, with only a few recorded per century, there is significant potential for large-scale impacts when they do...
Magnetic storms can interfere with the operation of electric power grids and damage grid infrastructure. They can also disrupt directional drilling...
USGS explores the meaning behind Frederic Edwin Church's 1865 painting, “Aurora Borealis.”