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Time Delay Between Dst Index and Magnetic Storm Related Structure in the Solar WindBenson et al. (2015, this volume) selected 10 large magnetic storms, with associated Dst minimum values less than or equal to -100 nT, for which high-latitude topside ionospheric electron density profiles are available from topside-sounder satellites. For these 10 storms, we performed a superposition of Dst and interplanetary parameters B, v, N(sub p) and T(sub p). We have found that two interplanetary parameters, namely B and v, are sufficient to reproduce Dst with correlation coefficient cc approximately 0.96 provided that the interplanetary parameter times are taken 0.15 days earlier than the associated Dst times. Thus we have found which part of the solar wind is responsible for each phase of the magnetic storm. This result is also verified for individual storms as well. The total duration of SRS (storm related structure in the solar wind) is 4 - 5 days which is the same as the associated Dst interval of the magnetic storm.
Document ID
20150018311
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Osherovich, Vladimir A.
(Catholic Univ. of America Washington, DC, United States)
Fainberg, Joseph
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 24, 2015
Publication Date
May 12, 2015
Subject Category
Geophysics
Report/Patent Number
GSFC-E-DAA-TN25047
Meeting Information
Meeting: International Ionospheric Effects Symposium (IES2015)
Location: Alexandria, VA
Country: United States
Start Date: May 12, 2015
End Date: May 14, 2015
Sponsors: Boston Coll.
Funding Number(s)
CONTRACT_GRANT: NNG11PL10A
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
solar wind
coupling function
magnetic storm
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