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Radio wave diffraction during the passage of an acoustic shock through a sporadic E layer
Author(s) -
Jacobson Abram R.,
Carlos Robert C.,
Argo Paul E.,
Rickel Dwight G.
Publication year - 1986
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs021i004p00752
Subject(s) - doppler effect , sporadic e propagation , ionosphere , diffraction , physics , shock wave , shock front , ionization , geology , radio wave , shock (circulatory) , computational physics , geophysics , acoustics , optics , astronomy , ion , mechanics , medicine , quantum mechanics
Bistatic HF Doppler measurements of the ionospheric disturbance arising from a large ground level chemical explosion have revealed a peculiar HF return which begins at large positive Doppler (> + 5Hz) and linearly evolves to large negative Doppler (< ‐ 5 Hz). Various pieces of evidence in our data suggest we observed an HF wave which is diffracted from the intersection of the acoustic shock and an extensive plane of sporadic E ionization at 110 km. From these measurements we estimate the horizontal trace velocity of the locus of intersection.