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Proposal Identification No.:

T2291

Date Received:

2006-Oct-02 03:49:12

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: Regular Terrestrial Aeronomy Radar Thermosphere 72 Hours 12 hours

Detailed Study of Thermospheric Gravity Waves at Arecibo with Extended Lat-

itude Coverage
ABSTRACT:
The proposed study follows up on previous thermospheric gravity wave observations made at Arecibo Observatory under quiet geomagnetic conditions. The past work entailed a collaboration among scientists at Penn State University, Arecibo Observatory, Geospace Research, Inc. and other institutions. The proposed pro ject is aimed at expanding our optical database at Arecibo and including additional facilities that will simultaneously operate during the Arecibo measurements. These are the Millstone Hill Radar, the associated CCD imaging facility operated by Boston University, and the SuperDARN radar to be used for polar measurements. The ob jective is to determine whether gravity-wave induced traveling ionospheric disturbances (TIDs) consistently observed at high geomagnetic latitudes under quiet geomagnetic conditions are at all related to the continuum of thermospheric waves observed at Arecibo. The source of the Arecibo waves remains unsettled despite the fact that we have been able to better quantify the nature of the neutral perturbations. The omnipresence of nominally the same thermospheric waves at Arecibo appears to defy theoretical explanation.

Name Frank T. Djuth

Institution Geospace Research, Inc.

E-mail djuth@ix.netcom.com

Phone 310-322-1160

Student no

Remote Observing Request

X

Observer will travel to AO Remote Observing In Absentia (instructions to operator)

Instrument Setup
430 G 430 CH receiver 430 CH radar

Atmospheric Observation Instruments: 1


Fabry-Perot Ionosonde Sp ecial Equipment or setup: No special hardware, software, or recording media is needed.

RFI Considerations Frequency Ranges Planned
429.5 MHz - 430.5 MHz

2