A new method to calculate the time delay of the Pi2 pulsations. Issue 2 (15th January 2016)

• Record Type: Journal Article
• Authors: Ghamry, Essam; Fathy, Adel
• Is Part Of: Advances in space research. Volume 57:Issue 2(2016)
• Page Start: 701
• Page End: 709
• Publication Date: 2016-01-15
• Subjects: Pi2 pulsation -- Time delay -- Cross wavelet; Space sciences -- Periodicals; Astronautics -- Periodicals; Geophysics -- Periodicals; 500.505
• DOI: 10.1016/j.asr.2015.10.045
• Languages: English
• ISSNs: 0273-1177

Abstract

Abstract: The time delay determination of the Pi2 pulsations could provide more understanding of the propagation characteristics of the Pi2. Few studies have concerned with the time delay of Pi2 pulsation. We present a new method to calculate the time delay of Pi2 pulsations using cross wavelet technique. We study 48 events occurred in March 2008 and February–May 2009 at Carson City (CCNV), McGrath (MCGR), The Pas (TPAS) and Kuujjuarapik (KUUJ) stations which belong to the ground magnetometer network of the Time History of Events and Macroscale Interactions during Substorms (THEMIS). The cross wavelet spectrum showed a comparable time with that obtained using cross correlation method. We suggest that the cross wavelet technique can be effectively used to calculate the time delay of Pi2 pulsation and further used as a substitute for cross correlation method.