@article{benmenahem1991,
	Abstract = {A novel tool is introduced into acoustic and seismic
exploration, the primary aim
of which is to enhance the amplitudes of seismic signals interacting
with material discontinuities
and structural contrasts in sedimentary formations.  This is achieved by
creating a moving source
with supershear or even superdilatational velocity, and recording the
ensuing Mach waves on arrays
of sensors.  The theory shows that the spectral enhancement factor of a
single sensor equals
k-DELTA, where k = omega/Co and DELTA is the horizontal separation of
the moving-source line and the
sensor line.  For DELTA = 120 ft, f = 100 Hz, and Co = 8000 ft/s, this
factor is about 10.  This
ratio can be further increased by summing the output of a sensor array. 
A number of field
experiments are suggested to test the theory.},
	Author = {Ben-Menahem, A.},
	Date-Modified = {2010-07-12 11:54:56 -0700},
	Issue = {1},
	Journal = {J. Acoust. Soc. Am.},
	Month = {Jul},
	Pages = {500--506},
	Title = {Signal enhancement with Mach-Cerenkov waves},
	Volume = {90},
	Year = {1991},
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{"_id":"s2393xq4FTxLTTHWh","bibbaseid":"benmenahem-signalenhancementwithmachcerenkovwaves-1991","downloads":0,"creationDate":"2017-07-12T15:38:36.409Z","title":"Signal enhancement with Mach-Cerenkov waves","author_short":["Ben-Menahem, A."],"year":1991,"bibtype":"article","biburl":"https://dl.dropboxusercontent.com/u/564501919/CollectedPapers/MasterBibliography.bib","bibdata":{"bibtype":"article","type":"article","abstract":"A novel tool is introduced into acoustic and seismic exploration, the primary aim of which is to enhance the amplitudes of seismic signals interacting with material discontinuities and structural contrasts in sedimentary formations. This is achieved by creating a moving source with supershear or even superdilatational velocity, and recording the ensuing Mach waves on arrays of sensors. The theory shows that the spectral enhancement factor of a single sensor equals k-DELTA, where k = omega/Co and DELTA is the horizontal separation of the moving-source line and the sensor line. For DELTA = 120 ft, f = 100 Hz, and Co = 8000 ft/s, this factor is about 10. This ratio can be further increased by summing the output of a sensor array. A number of field experiments are suggested to test the theory.","author":[{"propositions":[],"lastnames":["Ben-Menahem"],"firstnames":["A."],"suffixes":[]}],"date-modified":"2010-07-12 11:54:56 -0700","issue":"1","journal":"J. Acoust. Soc. 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This is achieved by\ncreating a moving source\nwith supershear or even superdilatational velocity, and recording the\nensuing Mach waves on arrays\nof sensors. The theory shows that the spectral enhancement factor of a\nsingle sensor equals\nk-DELTA, where k = omega/Co and DELTA is the horizontal separation of\nthe moving-source line and the\nsensor line. For DELTA = 120 ft, f = 100 Hz, and Co = 8000 ft/s, this\nfactor is about 10. This\nratio can be further increased by summing the output of a sensor array. \nA number of field\nexperiments are suggested to test the theory.},\n\tAuthor = {Ben-Menahem, A.},\n\tDate-Modified = {2010-07-12 11:54:56 -0700},\n\tIssue = {1},\n\tJournal = {J. Acoust. Soc. Am.},\n\tMonth = {Jul},\n\tPages = {500--506},\n\tTitle = {Signal enhancement with Mach-Cerenkov waves},\n\tVolume = {90},\n\tYear = {1991},\n\tBdsk-File-1 = {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}}\n\n","author_short":["Ben-Menahem, A."],"key":"benmenahem1991","id":"benmenahem1991","bibbaseid":"benmenahem-signalenhancementwithmachcerenkovwaves-1991","role":"author","urls":{},"downloads":0,"html":""},"search_terms":["signal","enhancement","mach","cerenkov","waves","ben-menahem"],"keywords":[],"authorIDs":[],"dataSources":["PNGDXNYHvWreEEzYY"]}