A field line resonance investigation of two-dimensional profile of magnetospheric density observed by multiple magnetometer networks

Details A field line resonance investigation of two-dimensional profile of magnetospheric density observed by multiple magnetometer networks A field line resonance investigation of two-dimensional profile of magnetospheric density observed by multiple magnetometer networks

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agusmsm23a..02c&link_type=abstract

American Geophysical Union, Spring Meeting 2009, abstract #SM23A-02

Physics

1594 Instruments And Techniques, 2752 Mhd Waves And Instabilities (2149, 6050, 7836), 2768 Plasmasphere, 2788 Magnetic Storms And Substorms (7954), 2794 Instruments And Techniques

Scientific paper

One of the modern and popular uses of ground magnetometer data is to identify field line resonance frequencies through cross-phase or cross-amplitude analysis and infer the equatorial mass density in the magnetosphere. Most studies on this topic to date focus on the observations along a specific meridian, and, as the Earth rotates, the observations constantly advance in local time. This study presents the field line resonance analysis using data gathered by a number of magnetometer networks in North America, such as McMAC, Falcon, IGPP-LANL, THEMIS, CARISMA, AUTUMN, and Alaskan stations. The observations provide two-dimensional snapshots of the equatorial mass density over a range of L-values and local hours. We will show the spatiotemporal features of density structure observed by the combined two-dimensional magnetometer network and how they are compared with the results obtained by observations along a single meridian.

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