منابع مشابه
2-D Velocity structure of Kerala-Konkan region using seismic traveltime Inversion
Existence of gas-hydrates in the marine sediments elevates the velocity of seismic waves, whereas even a small amount of underlying free-gas decreases the seismic velocity considerably. These changes in velocities can be used for the assessment of gas-hydrates. The traveltime inversion is an effective method to derive a 2-D velocity structure from the seismic data. We have applied the method to...
متن کاملcrustal seismic velocity structure study in kope dagh using simultaneous inversion modeling
crustal velocity structure model has a significant role in truly understanding of seismicity and also in relocating earthquakes. on the other hand, it can be used for recognizing major and potential seismic sources which is very critical for seismicity and earthquake hazard assessment studies. seismic parameters simultaneous inversion modeling is one of the most prevalent methods in the study o...
متن کاملInversion of seismic attributes for velocity and attenuation structure
We have developed an inversion formulation for velocity and attenuation structure using seismic attributes, including envelope amplitude, instantaneous frequency and arrival times of selected seismic phases. We refer to this approach as AFT inversion for amplitude, (instantaneous) frequency and time. Complex trace analysis is used to extract the different seismic attributes. The instantaneous f...
متن کاملConstraints on Minimum Velocity Variance for Seismic Traveltime Tomography
SUMMARY Traveltime data together with known spacing between sources and receivers for seismic transmission tomography can be used to determine rigorous constraints on the minimum and maximum wave speeds in the propagating medium. These constraints lead to a new minimum variance criterion on inversion algorithms. These results do not improve the velocity reconstructions directly , but provide ri...
متن کاملInversion of seismic refraction and wide-angle reflection traveltimes for three-dimensional layered crustal structure
We present a method for the determination of crustal structure by simultaneous inversion of seismic refraction and wide-angle reflection traveltimes for 3-D interface geometry and layer velocity. Crustal structure is represented by layers in which velocity varies linearly with depth, separated by smooth interfaces with a cubic B-spline parametrization. Lateral variations in structure are theref...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 1992
ISSN: 0956-540X,1365-246X
DOI: 10.1111/j.1365-246x.1992.tb00836.x