Report of geomagnetic pulsation indices for space weather applications
Open-File Report
2013-1166
By: Z. Xu, Jennifer L. Gannon, and Erin J. Rigler
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Abstract
The phenomenon of ultra-low frequency geomagnetic pulsations was first observed in the ground-based measurements of the 1859 Carrington Event and has been studied for over 100 years. Pulsation frequency is considered to be “ultra” low when it is lower than the natural frequencies of the plasma, such as the ion gyrofrequency. Ultra-low frequency pulsations are considered a source of noise in some geophysical analysis techniques, such as aeromagnetic surveys and transient electromagnetics, so it is critical to develop near real-time space weather products to monitor these geomagnetic pulsations. The proper spectral analysis of magnetometer data, such as using wavelet analysis techniques, can also be important to Geomagnetically Induced Current risk assessment.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Report of geomagnetic pulsation indices for space weather applications |
| Series title | Open-File Report |
| Series number | 2013-1166 |
| DOI | 10.3133/ofr20131166 |
| Year Published | 2013 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Geologic Hazards Science Center |
| Description | iv, 22 p. |
| Country | United States |
| Online Only (Y/N) | Y |
| Google Analytic Metrics | Metrics page |