SPA21A:
New Findings and Insights From High-Resolution Studies of the Ionosphere I

Submit an Abstract to this Session

Session ID#: 6830

Session Description:
The ongoing technological revolutions in instrumentation and numerical modeling mean that we are able to probe the ionosphere with unprecedented resolution both in time and space.  The new findings reveal far more structure and variability than expected.  The surprises include phenomena such as strong electric fields occurring on km-scales; fascinating small-scale structures in time and/or space seen in all the main plasma parameters; rockets and satellites showing the existence of decameter-scale cavities; short-lived plasma seen in the aurora in conjunction with rays or coronal forms; and numerical simulations of E region turbulence revealing details of the evolution of small-scale plasma structure. The remarkable dynamics of the ionosphere at these scales across disparate phenomena present challenges for our understanding of ionospheric physics and magnetosphere-ionosphere coupling.  This session solicits presentations based on recent instrumental or numerical high-resolution studies of the ionosphere.  All latitudes and ionospheric altitudes are to be included. 
OSPA Liaison:  J. Michael Ruohoniemi, Virginia Polytechnic Institute and State University, Blacksburg, United States
Chairs:  Jean-Pierre St-Maurice, University of Saskatchewan, Saskatoon, SK, Canada and Kathryn A McWilliams, University of Saskatchewan, Saskatoon, SK, Canada
Primary Convener:  Jean-Pierre St-Maurice, University of Saskatchewan, Saskatoon, SK, Canada
Conveners:  J. Michael Ruohoniemi, Virginia Tech, Blacksburg, United States and Kathryn A McWilliams, University of Saskatchewan, Saskatoon, SK, Canada
Index Terms:

2407 Auroral ionosphere [IONOSPHERE]
2411 Electric fields [IONOSPHERE]
2415 Equatorial ionosphere [IONOSPHERE]
2427 Ionosphere/atmosphere interactions [IONOSPHERE]

Abstracts Submitted to this Session:

SPA21A-01
Characterization of the Energy-Dependent Response of Riometer Absorption (35408)
Adam C Kellerman1, Yuri Shprits2, Roman Makarevich3, Emma Spanswick4, Eric Donovan4 and Geoffrey D Reeves5, (1)University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, United States, (2)Massachusetts Institute of Technology, Cambridge, MA, United States, (3)University of Alaska Fairbanks, Fairbanks, AK, United States, (4)University of Calgary, Calgary, AB, Canada, (5)Los Alamos National Laboratory, Los Alamos, United States
SPA21A-02
New Perspectives on Small-Scale and Rapidly Varying Auroral Structures from CASSIOPE e-POP Fast Auroral Imager (FAI) Observations (Invited) (35268)
Leroy Cogger, Andrew David Howarth and Andrew W Yau, University of Calgary, Calgary, AB, Canada
SPA21A-04
Imaging the Dynamic Auroral Ionosphere and Polar Ionosphere Using Incoherent Scatter Radar and All-Sky Imaging (Invited) (35454)
Stephen Roland Kaeppler1, Michael J Nicolls2, Russell B Cosgrove3, Anja Stromme2 and Donald Hampton4, (1)SRI International, Menlo Park, United States, (2)SRI International Menlo Park, Menlo Park, CA, United States, (3)SRI International San Luis Obispo, San Luis Obispo, CA, United States, (4)University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States
SPA21A-05
Source and evolution of the ionospheric F-region tongue of ionization and patches (35692)
Wenbin Wang1, Jing Liu2, Alan Geoffrey Burns3 and Stanley C Solomon3, (1)High Altitude Observatory, Boulder, CO, United States, (2)National Center for Atmospheric Research, High Altitude Observatory, Boulder, CO, United States, (3)NCAR, HAO, Boulder, CO, United States
SPA21A-06
Spatial characteristics of pulsating aurora as a function of latitude (35888)
Robert Michell1,2, Marilia Samara1 and Donald L Hampton3, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)University of Maryland, College Park, MD, United States, (3)University of Alaska Fairbanks, Fairbanks, AK, United States
SPA21A-07
Small-scale Structure and Variability in Mid-Latitude Ionospheric Plasma Convection (36832)
J. Michael Ruohoniemi1, Joseph B. H. Baker1, Evan G Thomas2, William A Bristow3 and Simon G Shepherd4, (1)Virginia Polytechnic Institute and State University, Blacksburg, United States, (2)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, (3)University of Alaska Fairbanks, Electrical Engineering, Fairbanks, AK, United States, (4)Dartmouth College, Thayer School of Engineering, Hanover, NH, United States
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