Visualization of ULF waves in SuperDARN data

Details Visualization of ULF waves in SuperDARN data Visualization of ULF waves in SuperDARN data

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30rssc2p&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 18, pp. SSC 2-1, CiteID 1926, DOI 10.1029/2003GL017757

Physics

6

Magnetospheric Physics: Mhd Waves And Instabilities, Magnetospheric Physics: Magnetosphere/Ionosphere Interactions, Magnetospheric Physics: Instruments And Techniques

Scientific paper

Measurements of ionospheric E × B drifts obtained with HF radars from the SuperDARN (Super Dual Auroral Radar) Network sometimes show signatures of ULF (few mHz) waves. We present a new data display technique that facilitates the detection of ULF waves in both ground and sea scatter returns. Statistical study of high time resolution data from the SuperDARN TIGER radar in Tasmania, Australia, revealed that ULF wave signatures occur on an everyday basis with ground scatter accounting for about 60% of wave events. About half of these events exhibit high coherence across large spatial distances and are associated with ULF pulsations recorded by a ground magnetometer. These results show that SuperDARN radars may be used to routinely monitor ULF waves in the high-latitude ionosphere.

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