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Implementing a seismic source

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Ricardo Duarte
Ricardo Duarte on 28 Apr 2021
Answered: Pratyush on 28 May 2024
Dear all,
I'm a new matlab user and I need to create a seismic pulse which the emitting source is moving (time dependent).
I have no idea how to do it.
Thanks in advance for your help.

Answers (1)

Pratyush
Pratyush on 28 May 2024
Hi Ricardo,
To create a time-dependent seismic pulse in MATLAB with a moving source, follow these simplified steps:
1. Define the Seismic Pulse: Use a mathematical model like a Gaussian function to represent your seismic pulse. For example, a Gaussian pulse centered around a specific frequency.
2. Model the Source Movement: Represent the source's movement with a simple model, such as linear motion at a constant velocity. This gives you the source's position as a function of time.
3. Combine and Simulate: Calculate how the moving source affects the seismic pulse observed at a fixed point in space. This involves adjusting the pulse based on the distance between the moving source and the observation point, considering the speed of wave propagation.
- Calculate the distance from the source to the observer at each time step.
- Determine the time it takes for the seismic wave to travel from the source to the observer.
- Adjust the seismic pulse timing based on this travel time to simulate how the pulse is observed as the source moves.
4. Plot Results: Visualize the original and the observed seismic pulses to understand the impact of source movement.

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