Significantly Improving Regional Seismic Amplitude Tomography at Higher Frequencies by DeterminingS‐Wave Bandwidth
نویسندگان
چکیده
منابع مشابه
Attenuation and velocity dispersion at seismic frequencies
Attenuation and velocity dispersion are strongly dependent on pore fluids, particularly partial gas saturation, and thus could become valuable direct hydrocarbon indicators. Unfortunately, application of these properties is not frequent due to incomplete understanding of the phenomena and lack of appropriate tools to extract the information. Laboratory measurements at frequencies and amplitudes...
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In this paper, a simple DFT-domain pitch-scaling technique is used to extend the audio bandwidth of wideband speech (50Hz – 7 kHz) to the super-wideband range (50Hz – 12 kHz). Therefore, the higher frequencies of the wideband signal (6 – 7 kHz) are pitch-scaled with a scaling factor of four and the resulting, scaled signal is inserted into the 8 – 12 kHz band. A subjective listening test has be...
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Seismic velocities in rocks at ultrasonic frequencies depend not only on the degree of saturation but also on the distribution of the fluid phase at various scales within the pore space. Two scales of saturation heterogeneity are important: (1) saturation differences between thin compliant pores and larger stiffer pores, and (2) differences between saturated patches and undersaturated patches a...
متن کاملSeismic Tomography
The inversion of seismic travel-time data for radially varying media was initially investigated by Herglotz, Wiechert, and Bateman (the HWB method) in the early part of the 20th century [1]. Tomographic inversions for laterally varying media began in seismology starting in the 1970's. This included early work by Aki, Christoffersson, and Husebye who developed an inversion technique for estimati...
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ژورنال
عنوان ژورنال: Bulletin of the Seismological Society of America
سال: 2016
ISSN: 0037-1106,1943-3573
DOI: 10.1785/0120150247