[IGPP Everyone] Space Physics Seminar - Spring Quarter - Friday - April 5, 2019

[Marjorie Sowmendran]

SPACE PHYSICS SEMINAR

DEPARTMENT OF EARTH, PLANETARY, AND SPACE SCIENCES

DEPARTMENT OF ATMOSPHERIC AND OCEANIC SCIENCES

UNIVERSITY OF CALIFORNIA, LOS ANGELES

(AOS M275C, EPSS M288C)





What are the Ionospheric Signatures of Magnetic Reconnection on the Dayside?



Gerard J. Fasel, Jennifer Lau

Pepperdine Univ.

ABSTRACT

Ever since Dungey proposed the model of the magnetic merging between the interplanetary magnetic field and the Earth’s terrestrial magnetic field, there has been a quest to find observations that support his theory.  Satellite observations in the 1970’s found the first evidence of magnetic reconnection.  Shortly afterwards ground observations identified possible ionospheric footprints of newly reconnected magnetic flux tubes.  Auroral features were observed to drift poleward after initially brightening at the dayside auroral oval.  There have been many discussions regarding the possibility of poleward-moving auroral forms (PMAFs) being associated with magnetic merging at the dayside magnetopause.  This talk will first introduce past studies regarding PMAFs.  Next, a series of questions will be posed: (i) Are PMAFs associated with combinations of IMF configurations needed for magnetic merging on the dayside? (ii) Are PMAFs associated with the solar wind speeds?  (iii) Is there any PMAF feature that is correlated with the IMF By-component?  Data will be presented and discussed for each of the above questions. 





Friday, April 5, 2019

Room 6704 Geology

3:30 - 5:00 PM

Presiding: R. J. Strangeway

In-Charge: C. T. Russell 
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