Shear and Compressional Wave Velocities along with other Petrophysical Logs, are considered as upmost important data for Hydrocarbon reservoirs characterization. Shear Wave Velocity (Vs) in Well Logging is commonly measured by some sort of Dipole Logging Tools, which are able to acquire Shear Waves as well as Compressional Waves such as Sonic Scanner, DSI (Dipole Shear Sonic imager) by Schlumbe...

We describe a new imaging method that uses single-cycle pulses of terahertz (THz) radiation. This technique emulates data-collection and image-processing procedures developed for geophysical prospecting and is made possible by the availability of fiber-coupled THz receiver antennas. We use a simple migration procedure to solve the inverse problem; this permits us to reconstruct the location and...

Busstop, a spatio-temporal GIS prototype for geophysical studies, is presented. It includes a metadata representation system, a visualisation subsystem, and a spatio-temporal extension of a classical map algebra. It also takes an active approach to integration with existing non-GIS data handling and analysis programs. Busstop has been used for minor geophysical case studies with some success, b...

Geophysical survey methods bring information on the rock environment in real time, i.e. already during the geophysical survey. A geologist or a geotechnician provides such obtained information to a designer for the purpose of designing and implementation work at construction sites. Also, information on the effect of the rock environment or its properties (changing with time) on stabilization wo...

Topography-induced variation of radar brightness still poses a problem in terms of radiometric calibration of SAR data, which is undoubtedly an indispensable step in order to deduce bioor geophysical parameters from amplitude images. We propose an integrated focusing and calibration procedure for airborne SAR data based on the time-domain backprojection technique. With the help of sensor positi...

The American Geophysical Union: DR. J. A. FLEMSpecial Articles: ING . ....565 * Isolation and Properties of Chicken Erythrocyte Acetylcholine and the Physiology of the Nervous Nuclei: DR. ALEXANDER L. DOUNCE and TIEN Ho System: DR. J. F. FULTON and DR. D. NACHMANLAN. Fractional Cephalin-Cholesterol Flocculation SOHN .59 ... ............................. . 569 in Hepatic Disease: DR. MAURICE BRU...

A series of digital data sets were compiled for input into a geophysical data base for a one degree quadrangle in Arizona. Using a Landsat digital mosaic as a base, information on topography, geology, gravity as well as Seasat radar imagery were registered. Example overlays and tabulations are performed. The role of remote sensing in environmental inventory has evolved into an important supplem...

the study area covers the northern part of the baft geological map (scale of 1:100 000 ). several porphyry and vein-type mineralization are reported from this area. a topic that is discussed in the mineral exploration community is the use of remote sensing and airborne geophysics for porphyry type mineralization. which one is more reliable and efficient in hydrothermal alteration mapping? airbo...

Bats’ double frequency band bio-sonar served as an inspiration for two researchers of the University of Trento. They established a new data processing technique to improve geophysical observation based on the interpretation of bi-dimensional subsurface images acquired by means of radars. Bio-inspired radars manage to obtain more accurate information regarding the composition and structure of pl...