Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Davis D. Sentman"'
Publikováno v:
Journal of Volcanology and Geothermal Research. :14-26
In January 2006, Augustine Volcano began erupting following an increase in seismicity that was first noted in late April 2005. Thirteen large explosive eruptions of Augustine occurred from January 11 to 28, 2006, followed by a continuously erupting p
Publikováno v:
Professional Paper. :569-577
Publikováno v:
Space Science Reviews. 137:51-82
This paper focuses on the rudimentary principles of discharge physics. The kinetic theory of electron transport in gases relevant to planetary atmospheres is examined and results of detailed Boltzmann kinetic calculations are presented for a range of
Autor:
Todd Pedersen, J. M. Hughes, Davis D. Sentman, Andrew Senior, F. T. Djuth, Robert A. Marshall, E. A. Gerken, M. McCarrick, Michael Kosch
Publikováno v:
Annales Geophysicae, Vol 23, Iss 5, Pp 1585-1592 (2005)
Annales Geophysicae, Vol 23, Pp 1585-1592 (2005)
Annales Geophysicae, Vol 23, Pp 1585-1592 (2005)
High-power high-frequency radio waves beamed into the ionosphere cause plasma turbulence, which can accelerate electrons. These electrons collide with the F-layer neutral oxygen causing artificial optical emissions identical to natural aurora. Pumpin
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
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
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:
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