HR: 0800h
AN: GP21A-0123    [Abstracts]
TI: ULF Pc 3-4 Pulsations and Their Parameters in the California Region as Measured with a Network of Search Coil Magnetometers
AU: * Dunson, C
EM: cdunson@quakefinder.com
AF: Quakefinder, LLC, 250 Cambridge Ave. #204, Palo Alto, CA 94306, United States
AU: Bleier, T E
EM: tbleier@quakefinder.com
AF: Quakefinder, LLC, 250 Cambridge Ave. #204, Palo Alto, CA 94306, United States
AB: The common characteristics of the signal found in the 0.0025-0.025 Hz portion of the geomagnetic spectrum are presented as measured by the CalMagNet high-resolution search coil network. Coherence, azimuth ratio, and timing of wave characteristics are depicted, showing their statistical variances, and potential for revealing residual local signals. The low coherence frequency band near 0.1Hz is compared with higher coherence signals at lower frequencies. Also presented are the results of comparing the characteristics of these signals around the time of earthquakes near the sensors as compared to control periods of data during non-earthquake periods.
DE: 0604 Antenna arrays
DE: 0694 Instruments and techniques
DE: 0699 General or miscellaneous
DE: 1594 Instruments and techniques
SC: Geomagnetism and Paleomagnetism [GP]
MN: 2007 Fall Meeting