The application of the proposed criterion to various digital geophysical records has provided satisfactory results. The method is well suited to geophysical signals because they often have a remarkable Markovian character in the broader sense, i.e. the autocovariances have values decreasing roughly exponentially as the time lags increase. Computer simulations on mathematically defined time seri...

Several methods are available for integrating geophysical, geological, and remote sensing data sets and also for integrating them with additional information such as newly observed geophysical and geological data. Several published reports discuss successful application of different types of spatial information integration techniques including the geographical information system (GIs). There ha...

Understanding how hydrological and biogeochemical properties change over space and time in response to remedial treatments is hindered by our ability to monitor these processes with sufficient resolution and over field relevant scales. Here, we explored the use of geophysical approaches for monitoring the spatiotemporal distribution of hydrological and biogeochemical transformations associated ...

s and Conference Proceedings Segall, P. and J.R. Rice, Dilatancy, compaction, and slip instability of a fluid-infiltrated fault, EOS. Transactions, American Geophysical Union, Vol. 75, No. 44, p. 425,1994. MOSSOP, Antony, and P. Segall. Induced seismicity at The Geysers, Northern California (EOS, TRANSACTIONS, AMERICAN GEOPHYSICAL UNION ; Vol. 75, No. 44, Suppl., p. 444, 1994). MOSSOP, Antony. ...

Geophysical measurements increasingly are being used in hydrologic field stud-­­ ies because of their ability to provide high-­­resolution images of the subsurface. In particular, tomographic imaging methods can produce maps of physical property distributions that have significant potential to improve subsurface characteriza-­­ tion and enhance monitoring of hydrologic processes. In the tomogra...

This study provides an example of fault structure delineation using both geophysical measurements and soil-gas surveys. Seismic refraction and electrical resistivity tomography investigations were performed in com-bination with Direct Push (DP) soil gas concentration measurements, with the main objective being the char-acterization of an assumed permeable fault structure which is covered by sed...

A minimum constraints solution, which resolves the datum defect of a control network, is an arbitrary solution that may result in a systematic error in the estimation of the deformation parameters. This error is not derived frommeasurements and is usually inconsistent with the geophysical reality. A free network is affected only by errors of measurement and, therefore, a free network is an acce...

The approaches taken to describe and develop spatial discretisations of the domains required for geophysical simulation models are commonly ad hoc, model or application specific and under-documented. This is particularly acute for simulation models that are flexible in their use of multi-scale, anisotropic, fully unstructured meshes where a relatively large number of heterogeneous parameters ar...

A data assimilation strategy based on feedback control has been developed for the geophysical sciences— a strategy that uses model output to control the behavior of the dynamical system. Whereas optimal tracking through feedback control had its early history in application to vehicle trajectories in space science, the methodology has been adapted to geophysical dynamics by forcing the trajector...