Coarse structures involving low electrical contrasts can be profitably imaged by means of cheap and relatively simple methods such as travel time tomography, whereas fine structure involving sub-wavelength detail can only be recovered by inverting full-waveform data. Despite its complexity and high computation costs, full-waveform inversion of GPR data has become a popular tool for high-resolut...

In this paper we investigate the inheritance of certain structures under generalized matrix inversion. These structures contain the case of rank structures, and the case of displacement structures. We do this in an intertwined way, in the sense that we develop an argument that can be used for deriving the results for displacement structures from thoses for rank structures. We pay particular att...

This is the second paper in a two-part series that describes a massively parallel code that performs 2D full-waveform inversion of wide-aperture seismic data for imaging complex structures. We present several numerical validation of the full-waveform inversion code with both canonical and realistic synthetic examples. We illustrate how different multiscale strategies can be applied by either su...

In the fluorescence excitation spectrum of acetaldehyde cooled in a supersonic jet, we performed a full rotational analysis of combination bands 100 140 150 n and 100 140 150 n , n50 – 4 in the system ÃA9– X̃A8. The vibrational frequency of the C–C–O bending mode is determined to be n10 8 5373.163(3) cm. The rotational structures of combination bands 100 140 150 , 100 140 150 , 100 140 150 , and...

This paper reviews geophysical and seismological imaging in the Coso geothermal field, located in southeast-central California. The Coso geothermal production area covers 6 10 km. Although regional seismicity is addressed, as it sheds light on the magma, or heat, sources in the field, the primary focus of this paper is on the main production area. Three-dimensional inversions for Pand S-wave ve...