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dc.contributor.authorLundien, Jerry R.-
dc.contributor.authorBenn, Bob O.-
dc.contributor.authorMobility and Environmental Systems Laboratory (U.S.)-
dc.identifier.govdocMiscellaneous Paper M-73-12-
dc.descriptionMiscellaneous Paperen_US
dc.description.abstractA study was conducted to investigate the generation and propagation of microseismic signals from man-walking targets. To illustrate the relation between terrain parameters and Rayleigh wave generation and propagation, the problem was divided into four parts, which were then studied graphically. These parts were: (a) the target-ground interaction, (b) energy coupling to the substrate, (c) Rayleigh wave propagation from the source, and (d) transmission of Rayleigh waves over surface macrogeometry features. Parameters that are included in the terrain model are: (a) surface rigidity in terms of nonlinear surface spring constants and (b) subsurface rigidity in terms of seismic properties (wave velocities and bulk density) and layer thickness. The terrain combinations include a wide variation in site conditions and have realism in terms of environments found in nature. Sample problems are incluued to demonstrate the signal construction techniques and are analyzed to show the effect of the various terrain parameters on the generation and propagation of the Rayleigh waves.en_US
dc.description.sponsorshipSponsored by Project Manager, Remotely Monitored Battlefield Surveillance System, U. S. Army Materiel Command, Fort Monmouth, New Jersey Project No. 1X663719DK73en_US
dc.description.tableofcontentsForeword-iii Summary-vii Introduction-1 Purpose and Scope-2 The Microseismic Propagation Model-2 Graphic Modeling Technique -8 Source stress signals-10 Source coupling coefficients-16 Source coupling coefficients-terrain relations-22 Transmission coefficients-23 Rayleigh wave phase velocity-terrain relations-25 Surface macrogeometry coefficients-27 Graphic Modeling Procedure-29 Site 1 results-29 Site 2 results-32 Site 3 results-32 Summary and Recommendations-36 Summary-36 Recommendations -38 Literature Cited-40 Tables 1 and 2 Plates 1-44-
dc.format.extent99 pages / 2.852Mb-
dc.publisherU.S. Army Engineer Waterways Experiment Stationen_US
dc.relation.ispartofseriesMiscellaneous Paper (U.S. Army Engineer Waterways Experiment Station);no. M-73-12.-
dc.rightsApproved for public release; distribution is unlimited-
dc.sourceThe ERDC Library created this digital resource using one or more of the following: Zeta TS-0995, Zeutcehl OS 12000, HP HD Pro 42-in. map scanner, Epson flatbed-
dc.subjectShock wavesen_US
dc.subjectRemote sensing--Environmental aspectsen_US
dc.titleGeneration and Propagation of Microseismic Signals from Footstepsen_US
Appears in Collections:Miscellaneous Paper

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