Modeling the effects of an H2 gas release on the equatorial ionosphere

Details Modeling the effects of an H2 gas release on the equatorial ionosphere Modeling the effects of an H2 gas release on the equatorial ionosphere

Oct 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.4777a&link_type=abstract

Journal of Geophysical Research, vol. 83, Oct. 1, 1978, p. 4777-4790.

Physics

1

Atmospheric Models, F Region, Gas-Ion Interactions, Hydrogen, Ionic Reactions, Ionospheric Composition, Tropical Regions, Continuity Equation, Ionospheric Conductivity, Ionospheric Electron Density, Ionospheric Ion Density, Magnetic Equator

Scientific paper

Three simulated point releases of H2 gas are carried out at 1930 LT over the magnetic equator: 5 kg at 300 km, 10 kg at 350 km, and 20 kg at 300 km. The subsequent effects on the ionosphere in the vicinity of these releases are studied by calculating the densities of O(+), OH(+), H2O(+), and H3O(+) from coupled time-dependent ion continuity equations. It is found that the 5-kg release produces a depleted electron density region, while a 10-kg release produces an electron density hole. Increasing the release to 20 kg yields substantial amounts of the product ions OH(+), H2O(+), and H3O(+). The dominant ions at the times of 52, 276, and 1252 sec after release are 55% for H3O(+), 47.6% for OH(+), and 72.7% for O(+), respectively. Moreover, 276 sec after release, percent depletions in the integrated electron density and Pederson conductivity are 5.8% and 2.9%, respectively, for the 5-kg release; 7.4% and 5.2%, respectively, for the 10-kg release; and 11.8% and 4.3%, respectively, for the 20-kg release. Whether or not such initial depletions are sufficient remains to be seen.

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