Other
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsa52a0394k&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SA52A-0394
Other
0310 Airglow And Aurora, 2407 Auroral Ionosphere (2704), 2494 Instruments And Techniques, 6974 Signal Processing, 6984 Waves In Plasma
Scientific paper
Analysis of the spatial distribution of auroral emissions can provide important insight into the coupled ionosphere magnetosphere system. In particular, tomographic reconstruction of auroral volume emissions using multiple sensors can provide two-dimensional imaging information containing the altitude distribution of emissions which subsequently relates to the characteristic energy of energetic auroral electrons guided by the Earth's magnetic field at high latitudes. In this study, we present the results of tomographic imaging of auroral structures obtained during an experiment with two imaging spectrometers operating simultaneously, coinciding with the operation of the incoherent scatter radar (ISR) at Sondrestrom, Greenland. The spectrometers were located 290 km apart, one at Sondrestrom, and the other at Godhaven lying northwest nearly in the magnetic meridian of Sondrestrom. The spectrometers cover the spectral range between 420-870 nm, at a resolution of 1.5 nm. The data set inverted in this study corresponds to two campaigns conducted, one during 1-17 March 1996, and the other during 3-17 February, 1997. As aurora appeared in the magnetic zenith of Sondrestrom, synchronized exposures of the arcs were acquired with the respective spectrometers. Calibration for wavelength, uniform field, spectral sensitivity, curvature of field, and spatial mapping were performed prior to tomographic inversion. Precise alignment of the slit projection of the Godhaven spectrometer with the ISR beam enables the determination of emission distributions from an arc over Sondrestrom simultaneous with the characterization of the auroral energy from analysis of the altitude distribution of the ionization it causes. The analysis techniques, along with case studies and the interpretation of results are presented.
Chan Ben
Kamalabadi Farzad
Semeter Joshua
Swenson Gary
No associations
LandOfFree
Multi-instrument Analysis of Spatial Distribution of Auroral Emissions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Multi-instrument Analysis of Spatial Distribution of Auroral Emissions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-instrument Analysis of Spatial Distribution of Auroral Emissions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1434284