Record Details
DC trains and Pc3s : source effects in mid-lattitude geomagnetic transfer functions
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | DC trains and Pc3s : source effects in mid-lattitude geomagnetic transfer functions |
| Names |
Egbert, Gary D.
(creator) Eisel, Markus (creator) Boyd, O. Sierra (creator) Morrison, H. Frank (creator) |
| Date Issued | 2000-01-01 (iso8601) |
| Note | copyrighted by American Geophysical Union |
| Abstract | Magnetotelluric (MT) data from two sites 150 and 300 km southeast of San Francisco, California (geomagnetic dipole latitude: 43 degrees, L approximately 1.9) show that the usual MT assumption of spatially uniform external magnetic fields is violated to a significant degree in the period range 10-30 s. Inter-station transfer functions exhibit large systematic temporal variations which are consistent with a combination of two distinct sources: electromagnetic noise due to the San Francisco Bay Area Rapid Transit (BART) DC electric railway, and Pc3 geomagnetic pulsations. There is a suggestion in the data that some of the Pc activity may actually be excited by BART. |
| Genre | Article |
| Identifier | Boyd, O.S., Egbert, G. D., Eisel, M., Morrison, H. F., DC trains and Pc3s : source effects in mid0lattitude geometric transfer functions., 27(1), 2000. |
