Abstract
Seismic waves propagating in the Earth media exhibit an approximate constant-Q behavior in seismic frequency bands and can be parameterized by the frequency independent Q (constant-Q) model. The constant-Q model that is derived mathematically lacks a physical basis. In this study, we propose a fractal mechanical network model with alternating springs and dashpots to provide this mathematical model a physical motivation. With this, we derive a new time domain viscoacoustic wave equation where fractional Laplacian power terms are independent of the model heterogeneity. This equation can characterize the heterogeneous Q models accurately and computationally efficiently.
Original language | English (US) |
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Pages | 3994-3998 |
Number of pages | 5 |
DOIs | |
State | Published - 2019 |
Event | 88th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2018 - Anaheim, United States Duration: Oct 14 2018 → Oct 19 2018 |
Other
Other | 88th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2018 |
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Country/Territory | United States |
City | Anaheim |
Period | 10/14/18 → 10/19/18 |
All Science Journal Classification (ASJC) codes
- Geophysics