SM43B:
Temporal Variations of Precipitation: Fluctuating Aurora, ULF Modulation of High-Frequency Waves, and Modulation of Energetic Particle Loss II Posters

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Session ID#: 18078

Session Description:
Several types of auroras, such as pulsating and flickering aurora, are known to turn on and off or vary between bright and dim on time scales of fractions of a second to a few tens of seconds. A common characteristic is a remarkable irregularity in their temporal and spatial variations. Various wave-particle interactions in the inner magnetosphere have been implicated in the structure of fluctuating aurora. This common occurring phenomenon has been studied for more than 60 years but the underlying processes remain poorly understood. Recent observational advances both from ground-based observations and satellites have provided an excellent opportunity to finally understand the fluctuating aurora. The aim of this session is therefore to present studies that can contribute to our understanding of the underlying physics behind the fluctuating aurora. Theoretical as well as observationally driven studies are welcome.
Primary Convener:  Beate Krøvel Humberset, University of Bergen, Birkeland Centre for Space Science, Bergen, Norway
Conveners:  Dr. Alexa Jean Halford, PhD. , NASA Goddard Space Flight Center, Greenbelt, MD, United States, Aaron W Breneman, The University of Minnesota, Minneapolis, United States and Allison N Jaynes, University of Iowa, Iowa City, IA, United States
Chairs:  Beate Krøvel Humberset, University of Bergen, Birkeland Centre for Space Science, Bergen, Norway and Aaron W Breneman, The University of Minnesota, Minneapolis, United States
OSPA Liaison:  Allison N Jaynes, University of Iowa, Iowa City, IA, United States
Index Terms:

2483 Wave/particle interactions [IONOSPHERE]
2704 Auroral phenomena [MAGNETOSPHERIC PHYSICS]
2716 Energetic particles: precipitating [MAGNETOSPHERIC PHYSICS]
2774 Radiation belts [MAGNETOSPHERIC PHYSICS]

Abstracts Submitted to this Session:

Pulsating Aurora in Eveningside Giant Auroral Undulations (193015)
Michael Jason Ahrns, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States and Donald L Hampton, University of Alaska Fairbanks, Fairbanks, AK, United States
Temporal characteristics and energy deposition of pulsating auroral patches (129191)
Beate Krøvel Humberset, University of Bergen, Birkeland Centre for Space Science, Bergen, Norway, Jesper W Gjerloev, Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, Marilia Samara, NASA Goddard Space Flight Center, Greenbelt, MD, United States, Robert Michell, University of Maryland College Park, College Park, MD, United States and Ian Robert Mann, University of Alberta, Department of Physics, Edmonton, AB, Canada
Conjugate observation of auroral finger-like structures by ground all-sky cameras and THEMIS satellites (147267)
Katsuki Nishi, Nagoya University, Nagoya, Japan, Shiokawa Kazuo, ISEE, Nagoya University, Nagoya, Japan, Eric Donovan, University of Calgary, Calgary, AB, Canada and Dennis Fruehauff, Technical University of Braunschweig, Braunschweig, Germany
Optical Observations of Interhemispheric Electron Bouncing during Pulsating Aurora (180235)
Marilia Samara, NASA Goddard Space Flight Center, Greenbelt, MD, United States, Robert Michell, University of Maryland College Park, College Park, MD, United States, George V Khazanov, NASA Goddard Space Flight Center, Greenbelt, United States and Guy Alan Grubbs II, Southwest Research Institute, San Antonio, United States
Investigating the Contribution of High-Energy Precipitation During Pulsating Aurora: KAIRA and Optical Data Comparison (138108)
Antti Kero1, Maxime Grandin2, Noora Partamies3, Derek McKay-Bukowski2, Alexander Kozlovsky4 and Daniel K Whiter5, (1)University of Oulu, Sodankyla Geophysical Observatory, Sodankyla, Finland, (2)Sodankyla Geophysical Observatory, Sodankyla, Finland, (3)University Centre in Svalbard, Longyearbyen, Norway, (4)Sodankylä Geophysical Observatory, Sodankylä, Finland, (5)University of Southampton, Southampton, United Kingdom
Anisotropic spatial distribution of pulsating proton aurora and related Pc1 geomagnetic pulsation (128340)
Tomohiro Inoue1, Mitsunori Ozaki1, Satoshi Yagitani1, Shiokawa Kazuo2, Miyoshi Yoshizumi3, Kataoka Ryuho4, Yusuke Ebihara5, Reiko Nomura6, Kaori Sakaguchi7, Yuichi Otsuka8 and Martin G Connors9, (1)Kanazawa University, Kanazawa, Japan, (2)ISEE, Nagoya University, Nagoya, Japan, (3)Nagoya University, Institute for Space Earth Environmental Research, Nagoya, Japan, (4)NIPR National Institute of Polar Research, Tokyo, Japan, (5)Kyoto University, Research Institute for Sustainable Humanosphere, Kyoto, Japan, (6)JAXA, Kanagawa, Japan, (7)NICT National Institute of Information and Communications Technology, Tokyo, Japan, (8)Nagoya University, ISEE, Nagoya, Japan, (9)Athabasca University, Athabasca, AB, Canada
Possible link of sudden onset and short-time periodic pulsation of polar mesosphere summer echoes to ULF Pc5 geomagnetic pulsations and solar wind dynamic pressure enhancement (171571)
Youngsook Lee1, Sheila Kirkwood2 and Young-Sil Kwak1, (1)KASI Korea Astronomy and Space Science Institute, Daejeon, Korea, Republic of (South), (2)IRF Swedish Institute of Space Physics Kiruna, Kiruna, Sweden
A GNSS auroral space weather product-Quantifying auroral effects on GNSS (187342)
Sajan C Mushini, Emma Spanswick, Susan Skone and Eric Donovan, University of Calgary, Calgary, AB, Canada
Modulation of Chorus Intensity by ULF Waves Deep in the Inner Magnetosphere (152024)
Zhiyang Xia1, Lunjin Chen1, Lei Dai2, Seth G Claudepierre3, Anthony Arthur Chan4, A. Soto-Chavez5 and Geoffrey D Reeves6, (1)University of Texas at Dallas, Richardson, TX, United States, (2)National Space Science Center, Chinese Academy of Sciences, Beijing, China, (3)The Aerospace Corp, Los Angeles, CA, United States, (4)Rice University, Department of Physics and Astronomy, Houston, TX, United States, (5)New Jersey Institute of Technology, Center for Solar-Terrestrial Research, Newark, NJ, United States, (6)Los Alamos National Laboratory, Los Alamos, NM, United States
INVESTIGATING AN UNUSUAL PITCH ANGLE DISTRIBUTION DURING THE DROPOUT ON SEPTEMBER 12-13, 2014: WAVE-PARTICLE INTERACTIONS AND MAGNETOPAUSE COMPRESSION AS A MAJOR ROLE FOR DROPOUT IN DIFFERENT ENERGY LEVELS AND LSTAR (128351)
Claudia Medeiros1, Vitor Moura Cardoso e Silva Souza1, Luis Eduardo A Vieira2, David G Sibeck3, Dr. Alexa Jean Halford, PhD. 4, Livia Ribeiro Alves5, Ligia da Silva1, Jose Marchezi1, Paulo Ricardo Jauer6, Marlos Rockenbach1, Marcos D. Silveira7, Daiki Koga1, Alisson Dal Lago1, Renato Dallaqua8 and Odim Mendes Jr8, (1)INPE National Institute for Space Research, Sao Jose dos Campos, Brazil, (2)National Institute for Space Research (INPE), São José dos Campos - SP, Brazil, (3)NASA/GSFC, Greenbelt, United States, (4)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (5)INPE National Institute for Space Research, Space Science Division, Sao Jose dos Campos, Brazil, (6)INPE National Institute for Space Research, São José dos Campos - SP, Brazil, (7)NASA/GSFC, Greenbelt, MD, United States, (8)INPE National Institute for Space Research, Sao Jose Dos Campos, Brazil
Quasiperiodic modulation of equatorial noise emissions (121028)
Frantisek Nemec, Charles University, Prague, 180, Czech Republic, Ondrej Santolik, Institute of Atmospheric Physics ACSR, Praha 4, Czech Republic, Jolene S Pickett, University of Iowa, Department of Physics and Astronomy, Iowa City, IA, United States, Nicole Cornilleau-Wehrlin, LPPP/CNRS - Ecole Polytechnique, Palaiseau, France and Michel Parrot, CNRS - LPCE, Orleans, France
On the spatio-temporal and energy-dependent response of riometer absorption to electron precipitation: drift-time and conjunction analyses in realistic electric and magnetic fields (184462)
Adam C Kellerman1, Yuri Y. Shprits2, Roman Makarevich3, Eric Donovan4, Hui Zhu5, Nikita Aseev6 and Alexander Drozdov5, (1)University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, United States, (2)Deutsches GeoForschungsZentrum GFZ, 2.3 Earth's Magnetic Field, Potsdam, Germany, (3)University of Alaska Fairbanks, Geophysical Institute and Department of Physics, Fairbanks, AK, United States, (4)University of Calgary, Calgary, AB, Canada, (5)University of California Los Angeles, EPSS, Los Angeles, CA, United States, (6)University of California Los Angeles, Los Angeles, CA, United States
On the Role of Solar Wind Discontinuities in the ULF Power Spectral Density at the Earth’s Outer Radiation Belt: a Case Study (150927)
Livia Ribeiro Alves1, Carlos Roberto Braga2, Rafael R. S. Mendonca2, Paulo Ricardo Jauer3, Claudia Medeiros2, Vitor Moura Cardoso e Silva Souza2, Alisson Dal Lago4, Odim Mendes Jr1, Jose Marchezi2, Ligia da Silva2, Luis Eduardo A Vieira4, Marlos Rockenbach2, David G Sibeck5, Shrikanth G Kanekal6, Daniel N Baker7, John R Wygant8 and Craig Kletzing9, (1)INPE National Institute for Space Research, Sao Jose Dos Campos, Brazil, (2)INPE National Institute for Space Research, Sao Jose dos Campos, Brazil, (3)INPE National Institute for Space Research, São José dos Campos - SP, Brazil, (4)National Institute for Space Research (INPE), São José dos Campos - SP, Brazil, (5)NASA/GSFC, Greenbelt, United States, (6)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (7)University of Colorado, Laboratory for Atmospheric and Space Physics, Boulder, United States, (8)University of Minnesota Twin Cities, Minneapolis, MN, United States, (9)University of Iowa, Physics and Astronomy, Iowa City, United States
Occurrence of Large CNA Event at High Latitude During Recovery Phase of St. Patrick Day Geomagnetic Storm (120078)
Ashwini Kumar Sinha1, Jayanta Kumar Behera1, Ankush Tukaram Bhaskar2, Geeta Vichare1 and Rajesh Singh1, (1)Indian Institute of Geomagnetism, Navi Mumbai, India, (2)Space Physics Laboratory ,Vikram Sarabhai Space Centre, Indian Space Research Organisation, Thiruvananthapuram, India

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