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An experiment conducted by using a continuous wave-spectrum high frequency radio wave Doppler sounder array with three sites and nine transmitters (each site with three transmitters) was carried out to observe the coupling of energy between the troposphere and the ionosphere during the period of Hurricane Eloise. The analysis of the Doppler sounder records indicated that gravity waves were detected when the eye wall of Hurricane Eloise was located at the Gulf of Mexico. A group ray tracing has been used in an attempt to locate the sources of these waves. Wave sources are located along the storm track and near the storm center. The wave excitation mechanism is discussed.
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