Mathematics – Probability
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsm32d..08s&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SM32D-08
Mathematics
Probability
2154 Planetary Bow Shocks, 2159 Plasma Waves And Turbulence, 2772 Plasma Waves And Instabilities, 2784 Solar Wind/Magnetosphere Interactions
Scientific paper
Between February 2001 and May 2002, more than 200 hours of data were recorded by the Cluster Wideband Data (WBD) Plasma Wave Receiver in the vicinity of Earth's foreshock. We will discuss the statistics of the amplitudes of Langmuir waves observed by the Cluster WBD Plasma Wave Receiver in the foreshock region. The largest amplitude Langmuir waves were observed by Cluster near the boundary between the foreshock and solar wind in a region approximately 1 RE wide, in agreement with earlier studies. The electric field amplitude probability distributions often follow a combination of the log-normal statistics predicted by stochastic growth theory and power law statistics when sorted by the distance from the foreshock boundary. Deviations from stochastic growth theory occur for large amplitude waves near the edge of the foreshock, where the probability distributions resemble a power law. Corrections to the probability distributions for non-optimal auto-ranging due to rapid waveform amplitude variations will be discussed.
Balogh André
Gurnett Donald A.
Kletzing Craig A.
Lucek Elizabeth
Pickett Jolene S.
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