Zhongshan Conjugate Point Study During Auroral Substorms

• Published in: Chinese Journal of Geophysics
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2004
• Subjects: Greenland; Longyearbyen; Svalbard; Zhongshan; Zhongshan Station; Antarc*; Antarctica; Troms
• Online Access: http://dx.doi.org/10.1002/cjg2.455; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fcjg2.455; https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/cjg2.455

Abstract A comparison between the meridian scanning photometer (MSP) and magnetometer data from Longyearbyen, Svalbard, during the expansion phase of a magnetic substorm, shows that there is good consistency between the rapid poleward movement of the poleward auroral boundary recorded by MSP and the negative x ‐component deflection in the magnetometer data. Focusing on substorm onset, four auroral substorm nights of magnetometer data from Zhongshan station at Antarctica (ZHS), from the Troms ø ‐Svalbard chain, and from a selection of Greenland stations were compared to attempt to determine the geomagnetic conjugacy characteristics between high‐latitude polar regions. Seven substorm events are studied. The data show that the conjugate point of ZHS does drift from one substorm to another, and appears to move longitudinally between Greenland and Svalbard.