@Article{FrittsVRABTMKLFT:2008:GrWaTi,
author = "Fritts, D. C. and Vadas, S. L. and Riggin, D. M. and Abdu,
Mangalathayil Ali and Batista, Inez Staciarini and Takahashi,
Hisao and Medeiros, A. and Kamalabadi, F. and Liu, H. L. and
Fejer, B. G. and Taylor, M. J.",
affiliation = "{NorthWest Research Associates} and {NorthWest Research
Associates} and {NorthWest Research Associates} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Universidade Federal de Campina Grande} and
{University of Illinois} and {National Center for Atmospheric
research} and {Utah State University} and {Utah State
University}",
title = "Gravity wave and tidal influences on equatorial spread F based on
observations during the Spread F Experiment (SpreadFEx)",
journal = "Annales Geophysicae",
year = "2008",
volume = "26",
number = "11",
pages = "3235--3252",
abstract = "The Spread F Experiment, or SpreadFEx, was performed from
September to November 2005 to define the potential role of neutral
atmosphere dynamics, primarily gravity waves propagating upward
from the lower atmosphere, in seeding equatorial spread F (ESF)
and plasma bubbles extending to higher altitudes. A description of
the SpreadFEx campaign motivations, goals, instrumentation, and
structure, and an overview of the results presented in this
special issue, are provided by Fritts et al. (2008a). The various
analyses of neutral atmosphere and ionosphere dynamics and
structure described in this special issue provide enticing
evidence of gravity waves arising from deep convection in plasma
bubble seeding at the bottomside F layer. Our purpose here is to
employ these results to estimate gravity wave characteristics at
the bottomside F layer, and to assess their possible contributions
to optimal seeding conditions for ESF and plasma instability
growth rates. We also assess expected tidal influences on the
environment in which plasma bubble seeding occurs, given their
apparent large wind and temperature amplitudes at these altitudes.
We conclude 1) that gravity waves can achieve large amplitudes at
the bottomside F layer, 2) that tidal winds likely control the
orientations of the gravity waves that attain the highest
altitudes and have the greatest effects, 3) that the favored
gravity wave orientations enhance most or all of the parameters
influencing plasma instability growth rates, and 4) that gravity
wave and tidal structures acting together have an even greater
potential impact on plasma instability growth rates and plasma
bubble seeding..",
issn = "0992-7689",
language = "en",
targetfile = "gravity wave.pdf",
urlaccessdate = "16 jun. 2024"
}