Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012hell.conf....9d&link_type=abstract
10th Hellenic Astronomical Conference, Proceedings of the conference held at Ioannina, Greece, 5-8 September 2011. Edited by Io
Astronomy and Astrophysics
Astronomy
Scientific paper
Magnetospheric ULF waves influence radiation belt dynamics and are therefore of particular relevance for space weather nowcasting and forecasting efforts. We have used novel algorithms based on wavelet spectral methods to analyze multipoint observations of ULF wave activity by the Cluster and THEMIS missions and by ground-based magnetometers. Wavelet analysis is becoming a common tool for analyzing localized variations of power within a time series. By decomposing a time series into time-frequency space, we are able to determine both the dominant modes of variability and how these modes vary in time. The advantage of analyzing a signal with wavelets as the analyzing kernel is that it enables us to study features of the signal locally with a detail matched to their scale. Owing to its unique time-frequency localization, wavelet analysis is especially useful for signals that are non-stationary, have short-lived transient components, have features at different scales, or have singularities. The results are rather promising for the development of automatic identification tools, which will allow the detection and classification of various categories of ULF waves from multipoint magnetospheric observations according to well-defined criteria.
Anastasiadis Anastasios
Balasis Georgios
Daglis Ioannis A.
Georgiou Marios
Papadimitriou Christos
No associations
LandOfFree
A wavelet spectral analysis tool for multipoint space and ground-based observations of ULF wave activity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A wavelet spectral analysis tool for multipoint space and ground-based observations of ULF wave activity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A wavelet spectral analysis tool for multipoint space and ground-based observations of ULF wave activity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-910876