Advances in Near-surface Seismology and Ground-penetrating by Richard D. Miller, John H. Bradford, Klaus Holliger

By Richard D. Miller, John H. Bradford, Klaus Holliger

Published via the yank Geophysical Union as a part of the Geophysical improvement sequence, quantity 15.

Advances in Near-surface Seismology and Ground-penetrating Radar (SEG Geophysical advancements sequence No. 15) is a suite of unique papers via popular and revered authors from all over the world. applied sciences utilized in the applying of near-surface seismology and ground-penetrating radar have obvious major advances within the final a number of years. either equipment have benefited from new processing instruments, elevated machine speeds, and an accelerated number of applications.

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Green, 2009, Joint inversion improves zonation for 15 aquifer characterization: European Geosciences Union Geophysical Research Abstracts, 11, EGU2009-2303. , and W. Kauzmann, 1969, The structure and properties of water: Oxford University Press. Ernst, J. , A. G. Green, H. Maurer, K. Holliger, 2007, Application of a new 2D time-domain full-waveform inversion scheme to crosshole radar data: Geophysics, 72, no. 5, J53–J64. Farquharson, C. , 2008, Constructing piecewise-constant models in multidimensional minimum-structure inversions: Geophysics, 73, no.

A systematic research program using MASW as a tool for accurately determining near-surface S-wave velocities was launched in the early 1990s at the KGS. , 2008). Rayleigh-wave phase velocity of a model that is composed of n – 1 solid homogenous layers over a homogenous half-space (Figure 1; we call this model an n-layer model hereafter) is a function of frequency and four earth properties: VP, S-wave velocity, density, and thickness of the layers. , 1999). The sensitivity S of one earth property can be calculated by S ¼ Jdx, where dx is a vector of changes in one earth property.

To confirm the inverted S-wave velocity derived from the MASW method, a borehole was drilled and suspensionlogged near the profile (Figure 3). , 2002c). Inversion of Rayleigh Waves Using a Continuous-earth Model A continuously layered model (a compressible Gibson half-space) is the shear modulus that varies linearly with depth in an inhomogeneous elastic half-space and is used in near-surface geophysics. The relationship between Swave velocities and phase velocities of this model is defined analytically by a closed-form function.

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