P-wave Velocity
Effect of the Number and Orientation of Fractures on the P Wave Velocity Diminution: Application on the Building Stones of the Rabat Area (Morocco)
... Experimental studies of Kahraman [6,16] carried out on three types of stone (granite, marble and travertine) containing artificial joints (fractures) showed that P-wave velocity (Vp) decrease with an ...
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Prediction of Porosity and Density of Calcarenite Rocks from P Wave Velocity Measurements
... To determine the empirical relationships between P-wave velocity, porosity and density of the tested rock, the t-tests have been performed using the so-called stu- dent t-test. The t-test is ...
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P-wave velocity changes in freezing hard low-porosity rocks: a laboratory-based time-average model
... Abstract. P-wave refraction seismics is a key method in per- mafrost research but its applicability to low-porosity rocks, which constitute alpine rock walls, has been denied in prior ...explain ...
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Performance of a seismicity model for earthquakes in Japan (M ≥ 5 0) based on P wave velocity anomalies
... seismic velocity before earthquakes. A change in P-wave velocity was interpreted using the dilatancy the- ory (hypothesis) that rocks underwent dilatation in the last stage before failure ...
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Prediction of seismic P-wave velocity using machine learning
... A total of 38 geological and spatial variables were included as predictors (Table 1). These predictors are parameters that were assumed to influence P-wave velocity. However, only predictors that ...
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Assessments of Elastic Anisotropy of Banded Amphibolite as a Function of Cleavage Orientation Using S and P Wave Velocity
... elastic wave propagation is very sen- sitive to weak discontinouty, velocities propagate parallel to the oriented fractures are much higher than those in perpendicular propagation ...the wave ...
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Estimating the Mechanical Properties of Travertine Building Stones Due to Salt Crystallization Using Multivariate Regression Analysis
... Two series of samples were prepared for each stone type to identify their uniaxial compressive strength, Brazilian tensile strength and P-wave velocity before and after the treatment. The first ...
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Upper mantle structure around the Trans-European Suture Zone obtained by teleseismic tomography
... top-quality P wave ...of P wave velocity variations can be used to estimate the seismic LAB and the lithosphere thickness around the ...reference velocity model; thus, to be on ...
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Soil velocity profile on soft soil using seismic refraction
... Soil velocity profile often used as subsurface characterization by using geophysical ...primary wave (p-wave) velocity of the soil ...its p-wave velocity soil ...
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Modeling Investigation of Correlations between Elastic Properties Predicted by Rock Physics Model with Seismic Data (Case Study of an Iranian Oil Field)
... graph P-wave velocity versus the porosity is plotted and considered as the rock physics tem- ...on P-wave velocity in carbonate ...
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Asphalt Pavement Thickness Measurement Using The Seismic Reflection Technique
... the p- wave velocity in the material and T is the round-trip travel ...the p-wave reflects continually from the interface between the two materials and back to the surface, and back ...
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Determination of Thermal Conductivity and Porosity of Building Stone from Ultrasonic Velocity Measurements
... Ultrasonic velocity measurement, a non-destructive and easy method to apply in both field and laboratory conditions, has increasingly been conducted to determine the physical properties of rock ...of ...
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Geotechnical Investigation At Sanzule Beach, Ghana, Using Seismic Refraction Tomography
... the P- wave velocities of the various subsurface ...thickness, P- wave velocity, RQD, N-value and internal friction of 9 m, 323 m/s, 15 %, 20 blows/foot, and 35-40° ...m, ...
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Characterization of a complex near-surface structure using well logging and passive seismic measurements
... reduced velocity is ...the P -wave-velocity log within the Upper Cretaceous layer and one more at the Upper to Lower Cretaceous ...shear-wave velocity profiles from the array ...
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Integral analysis of seismic refraction and ambient vibration survey for subsurface profile evaluation
... primary velocity for weathered rocks was varied at ...primary velocity value for hard rocks and granite was varied at 2400 – 6000 ...Seismic velocity of earth materials may be influenced by several ...
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Lithospheric structure of the Arabian Shield from joint inversion of P- and S-wave receiver functions and dispersion velocities
... in P-wave velocity and a uniform crustal Vp/Vs ratio of ...V p /V s ratio justified for the Arabian crust, as values obtained from the hk-stacking analysis do not deviate significantly from ...
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Petrophysical characterization of comminution behavior
... of P-wave modulus and logarithm of magnetic susceptibility, grouped according to alteration styles in all five ...(c) P-wave velocity for all comminution test ...(f) ...
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Seismic structure and anisotrophy in southern Africa's lithosphere : constraints from broad band surface wave dispersion
... Figure 2.6 presents the depth distribution of the sensitivity of Rayleigh and Love waves phase velocities to the S-wave velocity, P-wave velocity and density at five different peri ods.[r] ...
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Development of Shear Wave Velocity for Backfill Materials
... For prediction purposes, Equations 3, 4, 5, and 6 are used. The data given in Table 1 were divided between fine sand (Sources 1, 5, 6, and 7) and coarse sand/fine gravel (Sources 2, 3, and 4). Each of the above ...
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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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