Multiple triangulation analysis: application to determine the velocity of 2-D structures

X.-Z. Zhou (1, 2) , Q.-G. Zong (2, 3) , J. Wang (1) , Z. Y. Pu (1) , X. G. Zhang (1) , Q. Q. Shi (2) , J. B. Cao (2)

1 Institute of Space Physics and Applied Technology [Beijing]
2 SKSW - State Key Laboratory of Space Weather [Beijing]
3 UMLCAR - Center for Atmospheric Research [Lowell]

In order to avoid the ambiguity of the application of the Triangulation Method (multi-spacecraft timing method) to two-dimensional structures, another version of this method, the Multiple Triangulation Analysis (MTA) is used, to calculate the velocities of these structures based on 4-point measurements. We describe the principle of MTA and apply this approach to a real event observed by the Cluster constellation on 2 October 2003. The resulting velocity of the 2-D structure agrees with the ones obtained by some other methods fairly well. So we believe that MTA is a reliable version of the Triangulation Method for 2-D structures, and thus provides us a new way to describe their motion.

Domaines: Océan, Atmosphère; Sciences de la Terre

X.-Z. Zhou, Q.-G. Zong, J. Wang, Z. Y. Pu, X. G. Zhang, et al.. Multiple triangulation analysis: application to determine the velocity of 2-D structures. Annales Geophysicae, 2006, 24 (11), pp.3173-3177. ⟨hal-00318221⟩