A ROCKET EXHAUST DEPLETION (RED) OF IONOSPHERIC TOTAL ELECTRON CONTENT DETECTED BY MULTIPLE DIAGNOSTICS

Details A ROCKET EXHAUST DEPLETION (RED) OF IONOSPHERIC TOTAL ELECTRON CONTENT DETECTED BY MULTIPLE DIAGNOSTICS A ROCKET EXHAUST DEPLETION (RED) OF IONOSPHERIC TOTAL ELECTRON CONTENT DETECTED BY MULTIPLE DIAGNOSTICS

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa12a..04b&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SA12A-04

Physics

[2403] Ionosphere / Active Experiments, [2435] Ionosphere / Ionospheric Disturbances, [2439] Ionosphere / Ionospheric Irregularities

Scientific paper

On April 30, 2005 one of the last Titan IIIC rockets was launched from Cape Canaveral, Fl. The trajectory was north eastward close to the eastern seaboard of the U.S. The second stage engine deposited over 30,000kg of exhaust gases over an altitude range from 273 km to 494 km, spanning a down range distance of ~1400km . The resulting Rocket Exhaust Depletion (RED) of ionospheric plasma was measured by multiple ground-based and space-based diagnostic techniques. The optical signature was imaged by the Boston Univ. all-sky imaging system at Millstone Hill Observatory, Westford, MA as a 3.5kR increase in 6300A airglow. The Total Electron Content (TEC), as measured by GPS receivers, was observed to decrease to 75% of pre-launch values within 30 minutes of the passage of the rocket. The Ionosonde at Wallops Is., ~600km from the trajectory, recorded a 70% decrease of NmF2 ~40 minus after the launch. A passage of DMSP (alt=840 km), ~ 1 hour after the launch, and ~700km to the west recorded a 20% drop in Total Ion Density. The ionospheric effects of RED’s are similar in magnitude to those from Storm Enhanced Densities (SED’s) and can have similar consequences for GPS navigation systems.

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