NOTE: ALL LINKS OPEN IN A NEW WINDOW
Geo-Technology & Treasure Hunting
 Carl Moreland's Website - Technology for Treasure Hunting

Personal Sites using FGM Sensors
Dave Oxnard's 2-Axis Magnetometer - A two pole magnetometer using FGM sensors
Doug Welch's Magnetometer - About his work with the FGM sensors.
Darrel Emerson's Web Site - Personal site about his work with the FMG sensors.
Joe Carr's Web Site - Radio Science Observers

Earth Field Magnetometry
Space Weather Discussion Forum
NOAA Space Environment Center - Solar Geophysical Data
U.S. Magnetic Observatory Data Plots - Five daily plots showing X, Y, and Z fields.

Earthquakes
U.S. Geological Survey - General Earthquake Information
U.S. Geological Survey for California and Nevada - A list of recent quakes and maps