Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Eugene M. Wescott"'
Autor:
Eugene M. Wescott, A. M. Paredes, J. R. Benbrook, Walter A. Lyons, Edgar A. Bering, J. A. Garrett, Davis D. Sentman, Hans C. Stenbaek-Nielsen, L. Bhusal, D. R. Moudry
Publikováno v:
Advances in Space Research. 34:1811-1814
Historically, the process of transient luminous event (TLE) detection has required an alert human observer on a low light level television (LLTV) monitor, either in real time or playback. The 1999 Sprites Balloon Campaign payloads had all-sky upward
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 65:509-518
Elves, halos and sprites were observed during August 1999 with a 1 ms high speed imager. The higher time resolution compared to conventional television cameras (17 or 20 ms ) allowed excellent images of the three phenomena temporally separate from ea
Autor:
Odim Mendes, Michael J. Taylor, Eugene M. Wescott, Fernanda T. Sa~O Sabbas, Osmar Pinto, Davis D. Sentman
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 65:525-535
We present a detailed statistical analysis of the association of 40 sprite events with lightning from the parent thunderstorm. Both temporal and spatial criteria were used to identify the parent cloud-to-ground (CG) lightning. Sprite images were GPS
Autor:
S. Berg, Eugene M. Wescott, Eric Bucsela, Donald Hampton, D. R. Moudry, Carl L. Siefring, Davis D. Sentman, Jeff S. Morrill, Matt Heavner
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 65:583-590
A pair of spectra taken simultaneously by two different ground-based instruments has been analyzed by our group. As with previous observations, the spectra are composed primarily of the N 2 first positive group (1PG) ( B 3 Π g − A 3 Σ u + ). In a
Autor:
Richard H. Picard, D. R. Moudry, Matt Heavner, Jeff S. Morrill, Eugene M. Wescott, Davis D. Sentman, E. M. Dewan, Jeremy R. Winick, H. C. Stenbaek-Nielsen, F. T. São Sabbas
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 65:537-550
from a central excitation region directly above the storm. During the initial stages of the storm outwardly expanding waves possessed a period of � ≈10 min and wavelength � ≈50 km. Over a 1 h interval the waves gradually changed to longer per
Autor:
J. A. Garrett, Davis D. Sentman, J. R. Benbrook, Edgar A. Bering, D. R. Moudry, Eugene M. Wescott, A. M. Paredes, Hans C. Stenbaek-Nielsen, Walter A. Lyons
Publikováno v:
Advances in Space Research. 30:2585-2595
Flight 3 of the Sprites99 balloon campaign flew from 00:39:32 to 11:12:00 UTC on 21 August 1999, launched from Ottumwa, Iowa. Three axis electric and magnetic field and ground-based low light level TV observations from three sites were made of more t
Autor:
D. R. Moudry, Matt Heavner, P. Huet, D. D. Sentman, Hans C. Stenbaek-Nielsen, Eugene M. Wescott
Publikováno v:
Journal of Geophysical Research: Space Physics. 106:21549-21554
Blue jets and blue starters are partially ionized luminous cones of primarily blue light that propagate upward out of the top of thunderstorms at speeds of order 100 km s−1. Blue jets propagate up ∼40 km, but blue starters, which resemble blue je
Autor:
Hans C. Stenbaek-Nielsen, F. T. São Sabbas, Davis D. Sentman, Matt Heavner, D. R. Moudry, Eugene M. Wescott
Publikováno v:
Journal of Geophysical Research: Space Physics. 106:10467-10477
Sprite halos were recently identified as an impulsive but spatially diffuse phenomenon that sometimes occurs just prior to, but distinct from, sprites. The lack of discernible spatial structure and the temporal development sequence in halos differs m
Autor:
Eugene M. Wescott, Hans C. Stenbaek-Nielsen, F. T. Sâo Sabbas, D. R. Moudry, Davis D. Sentman
Publikováno v:
Geophysical Research Letters. 27:3829-3832
Images of sprites have been recorded at 1 ms resolution revealing several new sprite properties. Sprites appear to occur in a highly structured mesosphere, and we suggest that the cause of some of this structure is the sprite activity itself. Evidenc
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 60:713-724
Blue jets are narrow cones of blue light that appear to propagate upward from the cloud tops at speeds of about 100 km/s to terminal altitudes of about 40 km ( Wescott et al. 1995 ). In this paper, we present the results of a refined analysis of thes