Automated interplanetary shock detection and its application to Wind observations

0422866 - ÚFA 2014 RIV US eng J - Journal Article
Krupařová, Oksana - Maksimovic, M. - Šafránková, J. - Němeček, Z. - Santolík, Ondřej - Krupař, Vratislav
Automated interplanetary shock detection and its application to Wind observations.
Journal of Geophysical Research-Space Physics. Roč. 118, č. 8 (2013), 4793–4803. ISSN 2169-9380. E-ISSN 2169-9402
R&D Projects: GA ČR(CZ) GAP209/12/2394
Institutional support: RVO:68378289
Keywords : Interplanetary shocks * instruments and techniques
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 3.440, year: 2013
http://onlinelibrary.wiley.com/doi/10.1002/jgra.50468/abstract

We present an automated two-step detection algorithm for identification of interplanetary (IP) shocks regardless their type in a real-time data stream. This algorithm is aimed for implementation on board the future Solar Orbiter mission for triggering the transmission of the high-resolution data to the Earth. The first step of the algorithm is based on a determination of a quality factor, Q indicating abrupt changes of plasma parameters (proton density and bulk velocity) and magnetic field strength. We test two sets of weighting coefficients for Q determination and propose the second step consisting of three additional constraints that increase the effectiveness of the algorithm. We checked the algorithm using Wind (at 1 AU) and Helios (at distances from 0.29 to 1 AU) data and compared obtained results with already existing lists of IP shocks.
Permanent Link: http://hdl.handle.net/11104/0228984