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Found 30 entries in the Bibliography.
Showing entries from 1 through 30
2021 |
Recent attention has been given to mesoscale phenomena across geospace (∼10 s km to 500 km in the ionosphere or ∼0.5 RE to several RE in the magnetosphere), as their contributions to the system global response are important yet remain uncharacterized mostly due to limitations in data resolution and coverage as well as in computational power. As data and models improve, it becomes increasingly valuable to advance understanding of the role of mesoscale phenomena contributions—specifically, in magnetosphere-ionosphere c ... Gabrielse, Christine; Nishimura, Toshi; Chen, Margaret; Hecht, James; Kaeppler, Stephen; Gillies, Megan; Reimer, Ashton; Lyons, Larry; Deng, Yue; Donovan, Eric; Evans, Scott; Published by: Frontiers in Physics Published on: |
2018 |
At 0821 UT on 7 February 2013, during an auroral substorm, the NASA VISIONS rocket was launched northward from Poker Flat Research Range on a flight to approximately 750-km altitude that terminated in the Arctic Ocean. A subpayload jettisoned on the up leg carried a multichannel optical imager that looked downward and observed the auroral emission through four narrow passband filters. Three of the channels had sufficiently strong signal to allow a measure of the time evolution of the horizontal extent of the electron auro ... Hecht, J.; Clemmons, J.; Conde, M.; Hampton, D.; Michell, R.; Rowland, D.; Pfaff, R.; Walterscheid, R.; Published by: Journal of Geophysical Research: Space Physics Published on: 07/2018 YEAR: 2018   DOI: 10.1029/2018JA025288 |
It is important to routinely examine and update models used to predict auroral emissions resulting from precipitating electrons in Earth\textquoterights magnetotail. These models are commonly used to invert spectral auroral ground-based images to infer characteristics about incident electron populations when in situ measurements are unavailable. In this work, we examine and compare auroral emission intensities predicted by three commonly used electron transport models using varying electron population characteristics. We ... Grubbs, Guy; Michell, Robert; Samara, Marilia; Hampton, Donald; Hecht, James; Solomon, Stanley; Jahn, Jörg-Micha; Published by: Journal of Geophysical Research: Space Physics Published on: 01/2018 YEAR: 2018   DOI: 10.1002/2017JA025026 |
2016 |
RENU 2 UV Measurements of Atomic Oxygen in the Cusp Region
Fritz, Bruce; Lessard, Marc; Paxton, Larry; Cook, Timothy; Lynch, Kristina; Clemmons, James; Hecht, James; Hysell, David; Crowley, Geoff; Published by: Published on: |
2015 |
A new technique for remote sensing of O 2 density from 140 to 180 km Observations of molecular oxygen are difficult to make in the Earth\textquoterights atmosphere between 140 and 200 km altitude. Perhaps the most accurate measurements to date have been obtained from satellite instruments that measure solar occultations of the limb. These do provide height-resolved O2 density measurements, but the nature of this technique is such that the temporal/spatial distribution of the measurements is uneven. Here a new space-based technique is described that utilizes two bright dayglow em ... Hecht, James; Christensen, Andrew; Yee, Jeng-Hwa; Crowley, Geoff; Bishop, Rebeeca; Budzien, Scott; Stephan, Andrew; Evans, Scott; Published by: Geophysical Research Letters Published on: 01/2015 YEAR: 2015   DOI: 10.1002/2014GL062355 |
A new technique for remote sensing of O2 density from 140 to 180 km
Hecht, James; Christensen, Andrew; Yee, Jeng-Hwa; Crowley, Geoff; Bishop, Rebeeca; Budzien, Scott; Stephan, Andrew; Evans, Scott; Published by: Geophysical Research Letters Published on: |
2014 |
Recent Results of the Remote Sensing of the O/N2 Ratio in the 100 to 200 Km Altitude Region
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2012 |
Hecht, J.; Mulligan, T.; Correira, J.; Clemmons, J.; Strickland, D.; Walterscheid, R.; Conde, M.; Published by: Journal of Geophysical Research Published on: Jan-01-2012 YEAR: 2012   DOI: 10.1029/2011JA017146 |
Knight, HK; Strickland, DJ; Correira, J; Hecht, JH; Straus, PR; Published by: Journal of Geophysical Research: Space Physics Published on: |
2011 |
A downward revision of a recently reported proton auroral LBH emission efficiency
Correira, J; Strickland, DJ; Evans, JS; Knight, HK; Hecht, JH; Published by: Journal of Geophysical Research: Space Physics Published on: |
Christensen, AB; Yee, J; Budzien, SA; Bishop, RL; Hecht, JH; Stephan, AW; Crowley, G; Published by: Published on: |
2010 |
Hecht, JH; Mulligan, T; Clemmons, JH; Strickland, DJ; Correira, J; Conde, MG; Published by: Published on: |
A new proton auroral extrapolation method applied in the estimation of FUV emission yields
Knight, HK; Strickland, DJ; Correira, J; Evans, JS; Hecht, JH; Published by: Published on: |
2009 |
Stephan, Andrew; Budzien, Scott; Bishop, Rebecca; Straus, Paul; Christensen, Andrew; Hecht, James; Van Epps, Zachary; Published by: Published on: |
Christensen, AB; Bishop, RL; Budzien, SA; Hecht, JH; Stephan, AW; Straus, PR; van Epps, Z; Published by: Published on: |
2008 |
Thermospheric density in the Earth s magnetic cusp as observed by the Streak mission
Clemmons, JH; Hecht, JH; Salem, DR; Strickland, DJ; Published by: Geophysical Research Letters Published on: |
Hecht, JH; Mulligan, T; Strickland, DJ; Kochenash, AJ; Murayama, Y; Tanaka, Y-M; Evans, DS; Conde, MG; Donovan, EF; Rich, FJ; , others; Published by: Journal of Geophysical Research: Space Physics Published on: |
Knight, HK; Strickland, DJ; Hecht, JH; Straus, PR; Morrison, D; Paxton, LJ; Evans, DS; Published by: Journal of Geophysical Research: Space Physics Published on: |
2006 |
Hecht, J.H.; Strickland, D.J.; Conde, M.G.; Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: Jan-09-2006 YEAR: 2006   DOI: 10.1016/j.jastp.2005.06.022 |
2005 |
Implications of Auroral Electron Precipitation During the JOULE Experiment
Slocum, PL; Clemmons, JH; Hecht, JH; Larsen, MF; Pfaff, RF; Steigies, CT; Stenbaek-Nielsen, HC; Strickland, DJ; Published by: Published on: |
Lower Thermospheric Composition Studies in the Auroral Zone
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Hecht, JH; Strickland, DJ; Knight, HK; Kochenash, AJ; Zhang, Y; Morrison, MD; Paxton, LJ; Mende, SB; Frey, HU; Burke, WJ; , others; Published by: Published on: |
Knight, HK; Strickland, DJ; Kochenash, AJ; Hecht, JH; Morrison, D; Zhang, Y; Paxton, LJ; Burke, WJ; Rich, FJ; Published by: Published on: |
2004 |
Hecht, JH; Strickland, DJ; Conde, MG; Morrison, MD; Published by: Published on: |
The Interaction of Auroral Electron Precipitation with the Thermosphere During the JOULE Experiment
Slocum, PL; Clemmons, JH; Hecht, JH; Pfaff, RF; Steigies, CT; Larsen, MF; Strickland, DJ; Published by: Published on: |
2003 |
Hecht, JH; Clemmons, JH; Slocum, PL; Strickland, D; Published by: Published on: |
Strickland, DJ; Hecht, JH; Meier, RR; Conde, M; Christensen, AB; Morrison, D; Published by: Published on: |
2002 |
Hecht, JH; Strickland, DJ; Conde, MG; Published by: Published on: |
Anderson, PC; Christensen, AB; Paxton, LJ; Hecht, JH; Strickland, DJ; Morrison, DJ; Wolven, BC; Zhang, Y; Kil, H; Published by: Published on: |
0 |
Wind-driven transport of thermospheric air parcels in the auroral zone Data from ground-based optical instruments at Poker Flat and Fort Yukon in Alaska recorded during 2010 were used to examine the relationship between composition changes in the auroral thermosphere and transport effects by neutral winds. Thermospheric column [O]/[N2] estimates were obtained from a pair of four-channel zenith-pointed narrow field photometers located at Poker Flat and Fort Yukon, whereas neutral winds at E and F-region heights were measured using an all-sky imaging Fabry-Perot spectrometer at Poker Flat. Wind f ... Conde, Mark; Hecht, James; Anderson, Callum; Published by: Published on: |
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