Name: Effects on Seismic Properties (en Inglés)
SKU: 25434698
Price: 62.24 USD
Availability: InStock
Author: Perveiz Khalid
ISBN: 9783844387759

portada Effects on Seismic Properties (en Inglés)

Effects on Seismic Properties (en Inglés)

Formato

Libro Físico

Editorial

Lap Lambert Academic Publishing

Autor

Perveiz Khalid

Año

2011

Idioma

Inglés

N° páginas

124

Encuadernación

Tapa Blanda

ISBN

3844387757

ISBN13

9783844387759

Categorías

Ciencias de la tierra/geociencias

Effects on Seismic Properties (en Inglés)

Perveiz Khalid (Autor) · Lap Lambert Academic Publishing · Tapa Blanda

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Reseña del libro "Effects on Seismic Properties (en Inglés)"

Two fluid-related sources of seismic attenuation andvelocity dispersion are examined: thermal relaxation,which originates from the contrasted temperaturevariations in the rock-forming minerals and in thesaturating fluid at the passage of the pressure wave;and the liquid-vapor phase transition in partiallysaturated rocks. An analysis of the relaxation timesshows that these processes are relevant in theseismic frequency band and drive the effective fluidcompressibility towards values higher than theunrelaxed values. Under full thermal relaxation between fluid and mineral, the effective compressibility is equal to the averageof the fluid adiabatic and isothermalcompressibilities weighted respectively by the heatcapacities of the fluid and mineral. On the otherhand, at the crossing of bubble point, in thelow-frequency regime a discontinuous variation influid compressibility exists. In these two relaxationprocesses, the difference in fluid bulk modulusbetween the unrelaxed and relaxed regimes, which isdirectly related to P-wave velocity dispersion, canbe as large as 0.5-1 GPa, depending on the fluid typeand gas saturation.