AUTHOREA
Log in Sign Up Browse Preprints
LOG IN SIGN UP
Itzhak Lior
Itzhak Lior

Public Documents 1
Accurate Magnitude and Stress Drop using the Spectral Ratios Method Applied to Distri...
Itzhak Lior

Itzhak Lior

July 23, 2023
The reliable estimation of earthquake magnitude and stress drop are key in seismology. The novel technology of distributed acoustic sensing (DAS) holds great promise for source parameter inversion owing to the measurements’ high spatial density. In this study, I demonstrate the robustness of DAS for magnitude and stress drop estimation using the empirical Green’s function deconvolution method. This method is applied to 9 co-located earthquakes recorded in Israel following the 2023 Turkey earthquakes. Spectral ratios were stacked along the fiber, and fitted with a relative Boatwright source spectral model. Excellent fits were obtained even for similar sized earthquakes. Stable seismic moments and stress drops were calculated assuming the moment of one earthquake is known. DAS derived estimates were found to be more stable and reliable than those obtained using a dense accelerometer network. The results demonstrate the great potential of DAS for source studies.

| Powered by Authorea.com

  • Home