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Detailed Reference Information |
Pfaff, R., Holzworth, R., Goldberg, R., Freudenreich, H., Voss, H., Croskey, C., Mitchell, J., Gumbel, J., Bounds, S., Singer, W. and Latteck, R. (2001). Rocket probe observations of electric field irregularities in the polar summer mesosphere. Geophysical Research Letters 28: doi: 10.1029/2000GL012677. issn: 0094-8276. |
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Electric field wave measurements gathered on a sounding rocket flown in the presence of polar mesospheric summer echoes reveal a distinct layer of irregularities between 83--86 km with broadband amplitudes of >10 mV/m rms. The waves are characterized by bursty, spiky waveforms with lower frequencies (~10 Hz) dominant in the upper portion of the layer near 85 km and broader band emissions, extending to higher frequencies (~1000 Hz) dominant in the lower portion of the layer near 83.5 km. The lower altitudes correspond to a region of weak optical emissions associated with a noctilucent cloud. The waves appear in and around regions where charged/neutral aerosols (1--10 nm) and large electron density depletions were observed. The irregularities likely result from a variety of processes including space charge inhomogeneities, mixed neutral and plasma motions, and complex effects associated with charged aerosols of varying sizes. ¿ 2001 American Geophysical Union |
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Abstract |
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Keywords
Atmospheric Composition and Structure, Middle atmosphere—energy deposition, Ionosphere, Ionospheric irregularities |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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