Multiscale activity observed by EIT/SoHO

Details Multiscale activity observed by EIT/SoHO Multiscale activity observed by EIT/SoHO

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.477..115h&link_type=abstract

In: Proceedings of the Second Solar Cycle and Space Weather Euroconference, 24 - 29 September 2001, Vico Equense, Italy. Editor:

Physics

1

Solar Activity, Solar Corona

Scientific paper

The Extreme ultraviolet Imaging Telescope (EIT) of SoHO provides a high-resolution and large sampling of the solar corona in time, space and brightness. To extract the wealth of its physics, it is valuable to adopt a multiscale approach. The Mexican Hat (MH) Continuous Wavelet Transform (CWT) is used for the first time to derive statistically the distribution of scales over 4 Mm. The global behaviour of the small scales offers a powerful way to monitor coronal activity. This is demonstrated with the May 1998 "CME Watch" data. This benefit is of space weather relevance and could improve forecasting of the solar activity.

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