Original Research
Published on 20 Mar 2023
The apparent focal depth, emergence angle, and take-off angle of seismic wave measured by YRY-4-type borehole strainmeter as one kind of strain seismograph
in Solid Earth Geophysics
![The apparent focal depth, emergence angle, and take-off angle of seismic wave measured by YRY-4-type borehole strainmeter as one kind of strain seismograph](https://www.frontiersin.org/files/myhome article library/1036797/1036797_Thumb_400.jpg)
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