Accession Number:

ADA445824

Title:

Investigation of Plasma Phenomena in the Ionosphere Under Natural Conditions and Under Conditions Artificially Perturbed by HAARP

Descriptive Note:

Scientific rept. 17 Feb 2003-17 Aug 2005

Corporate Author:

NORTHWEST RESEARCH ASSOCIATES INC BELLEVUE WA

Report Date:

2005-08-17

Pagination or Media Count:

81.0

Abstract:

Under this contract, Northwest Research Associates NWRA is performing measurements of the ionosphere in order to investigate plasma phenomena in both the natural ionosphere and in the ionosphere perturbed by the High-frequency Active Auroral Research Program HAARP high-frequency heater. The research being conducted falls within Hanscom Technical Areas 3a, Ionospheric Effects Research and Department of Defense Systems, and 3b, Ionospheric Research Technology, of the Broad Agency Announcement VS-O3-Ol released by the Air Force Research Laboratory AFRL. As a contribution to Technical Area 3b, we are collaborating with scientists and engineers from AFRL, the Naval Research Laboratory NRL, and other research organizations in the application of diagnostic instrumentation to HAARP. Among the HAARP instruments that we are applying to ionospheric research are three NWRA ITS1OS coherent radio receiving systems for measuring relative Total Electron Content TEC and recording scintillation, and an Ashtech Model Z-FX UPS receiver for measuring absolute TEC. We are posting TEC from these instruments, and phase-scintillation records from the ITS10S receivers, on the HAARP Web site www.haarp.alaska.edu for telescience applications and for decision-making during active experiments, and we are also focusing on inverting the TEC data tomographically to produce images of the F layer over Alaska. Research topics under the foregoing objectives are reported in Section 2.

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE