Compressional Wave Velocity
Comparison of Compressional-wave Velocity-depth Profiles from Surface and Downhole Detectors in the Near Surface in the Southeast Niger Delta, Nigeria
... from 2.7 to 16.50m, with an average of 8.1m. Consolidated- layer compressional wave velocity ranges from 1580 to 1906ms -1 , with an average of 737ms -1 . A vertical velocity gradient of 30.5s ...
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Acid solution decreases the compressional wave velocity of sandstone from the Yungang Grottoes, Datong, China
... elastic wave velocities were examined in this ...Elastic wave velocity (including compressional and shear waves), which is closely related to comprehensive changes in physical and chemical ...
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Frequency dependence of acoustic waves in marine sediments
... The SPADE (Sediment Probing Acoustic Detection Equipment) is able to systematically examine the compressional wave velocity and attenuation of marine sediments, down to 2 m below the seafloor, over ...
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Characterization, Pressure, and Temperature Influence On The Compressional and Shear Wave Velocity in Carbonate Rock
... the Wave Inversion and Subsurface Fluid Imaging Research Laboratory to obtain the value of compressional wave velocity (Vp) and shear wave velocity (Vs) in variation of ...
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The measurement of the in situ compressional wave properties of marine sediments
... of compressional wave properties in marine sediments, the nature of which is still under ...Equipment. Compressional wave velocity and attenuation coefficient were measured from 16 to ...
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Prediction of Shear Wave Velocity Using Artificial Neural Network Technique, Multiple Regression and Petrophysical Data: A Case Study in Asmari Reservoir (SW Iran)
... Shear wave velocity is one of the most important parameters in exploratory studies of petroleum and gas industry which unfortunately hasn’t been measured in most wells due to high ...shear wave ...
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Investigating acoustic propagation in gassy marine sediments using a bubbly gel mimic
... The compressional wave velocity of a bubbly xanthan gel sample was measured over the frequency range of 21 to 111 ...The velocity ratio between the bubbly gel and bubble-free gel displays a ...
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Effect of additional agitation on the development of strength of cement mortar studied using ultrasonic technique
... Abstract: In this paper, the effect of additional agitation on the development of strength of cement mortar studied using ultrasonic techniques. Mortars having water to cement ratio (w/c) of 0.40 were produced in the ...
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Poisson’s Ratio of Surface Soils and Shallow Sediments Determined from Seismic Compressional and Shear Wave Velocities
... the wave propagation from one lithology to another or from an unsaturated to a saturated medium leads to variation in the value of σ from 0 (indicating a considerable change in volume) to ...or ...
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Preliminary report on the physical properties of sediments from Leg 86 of the Deep Sea Drilling Project
... - Data Some of the calculated data are presented in Figures G-1, -2, -3 and -4 which show profiles of shear strength, shear wave velocity, compressional wave velocity, water content, bul[r] ...
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Near surface shear wave velocity in Bucharest, Romania
... shear-wave velocity (Vs) structure and to improve the available microzonations we conducted seismic refraction measurements in two parks of the ...the compressional-wave velocity (Vp) ...
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Surface Wave Velocity Tracking by Bisection Method
... Love wave and Rayleigh wave of an example in Chen (1993) is shown at 1 Hz with subsurface structure model of Table ...surface wave velocity by just watching zero-cross of imaginary part with ...
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The velocity of the arterial pulse wave: a viscous-fluid shock wave in an elastic tube
... The above results show that the PWV can increase in small arteries if the parameter a decreases. The parameter a describes the rate of increase in pressure during the initial rise as the pulse wave approaches a ...
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Piezoelectric Device for Measuring Shear Wave Velocity of Soils and Evaluation of Low and High Strain Shear Modulus
... Compression parallel to the polarization direction (or tension perpendicular to it) generates voltage of the same polarity as the polarization/poling voltage, while compression perpendicular to the polarization direction ...
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Association and diagnostic utility of diastolic dysfunction and myocardial fibrosis in patients with Fabry disease
... inflow velocity to mitral annular tissue velocity; EF, ejection fraction; GFR (DTPA), glomerular filtration rate from 99mTc-diethylene triamine penta-acetic acid; IVSd, end-diastolic interventricular septal ...
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Wave transformation and velocity fields in the breaker zone
... expression, corresponding to the wave vertical asymmetry, given by the Cnoidal theory is used in the investigation... This consists of an - infinite series contain[r] ...
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Estimation of Shear Wave Velocity Using Correlations
... Marto et al. [10] developed a universal correlation between shear wave velocity and SPT N values. A total of 60 global correlations were used to formulate a new universal correlation. Two types of equations ...
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Local pulse wave velocity as a cardiovascular biomarker
... choice for the current small image width of 25 mm has several reasons: the limited workspace, long time to save of the system and the test measurements appeared well enough for the study. However, the results showed that ...
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Velocity anisotropy in calcareous sediments from Leg 130, Ontong Java Plateau
... The Hamilton Frame velocimeter (Boyce, 1976) was used to measure compressional wave velocities at 500 kHz in discrete sam- ples, when induration made it difficult to insert DSV transduce[r] ...
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Development of Shear Wave Velocity for Backfill Materials
... Field velocity measurements were made in an initial 20 ft (12 m) deep embedded test pad and subsequently during production backfilling of the nearly 90 ft (27 m) deep ...
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