I have some .SAC data showing the earthquake wave form but in their header magnitudes are not mentioned. The question is that how can I determine the magnitudes from .SAC files?
There are several ways to measure earthquake magnitude from waveform data, and the specific method used will depend on the type of data you have and the software you are using to analyze it. Here are a few general steps you can follow to determine earthquake magnitudes from .SAC files:
Please try python;
Here is an example of a Python script that demonstrates how you might measure earthquake magnitude from waveform data:
import obspy
# Load the waveform data from a file
st = obspy.read("my_data_file.mseed")
# Extract the trace data from the waveform
tr = st[0]
# Calculate the amplitude of the seismic waves
amplitude = tr.max() - tr.min()
# Convert the amplitude to an earthquake magnitude using the moment magnitude scale
magnitude = 2/3 * (np.log10(amplitude) - 9.1)
print("Earthquake magnitude:", magnitude)
Syed Muzyan Shahzad
Hello.
Thank you very much for your help, I appreciate it. With the descriptions you wrote, I completely know what steps I should take.
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