DOI: 10.5281/zenodo.11197292
title: Supporting Information for "New 3D velocity model (mTAB3D) for absolute hypocenter location in southern Iberia and the westernmost Mediterranean"

description: These files comprise supplementary information for the paper entitled "New 3D velocity model (mTAB3D) for absolute hypocenter location in southern Iberia and the westernmost Mediterranean" (Sánchez-Roldán et al., 2024a)

These results were obtained after performing a relocation using the 3D P-wave velocity model mTAB3D (Sánchez-Roldán et al. 2024b).

In "Files.zip", we provide the eight files with the absolute locations and the uncertainty parameters (extracted from the 68% confidence ellipse of the PDF’s) obtained after performing the relocation using mIGN1D and mTAB3D. The absolute location files follow this format:

origin_time(YYYY-mm-ddTHH:MM:SS) longitude(º) latitude(º) depth(km) magnitude(mbLg)

• origin_time: Hypocenter’s origin time after the relocation.

• longitude: Hypocenter’s longitude in decimal degrees after the relocation.

• latitude: Hypocenter’s latitude in decimal degrees after the relocation.

• depth: Hypocenter’s depth in kilometers.

• magnitude: Hypocenter’s magnitude (mbLg) computed by the Spanish Seismic Network.

The files with the uncertainty values:

horizontal_uncertainty(km) vertical_uncertainty(km) rms(s) no_arrivals

• horizontal_uncertainty: Obtained after computing the geometrical mean between the horizontal semi-minor and semi-major axes of the 68% confidence ellipse in kilometers.

• vertical_uncertainty: Vertical semi-axis of the 68% confidence ellipse.

• rms: root-mean-square of residuals at maximum likelihood or expectation hypocenter.

• no_arrivals: number of readings used for the absolute location.

File S1. File_S1.dat: Eastern Betics Shear Zone catalog’s absolute locations with mIGN1D.

File S2. File_S2.dat: Eastern Betics Shear Zone catalog’s statistics with mIGN1D.

File S3. File_S3.dat: Eastern Betics Shear Zone catalog’s absolute locations with mTAB3D.

File S4. File_S4.dat: Eastern Betics Shear Zone catalog’s statistics with mTAB3D.

File S5. File_S5.dat: Al Hoceima 2016 catalog’s absolute locations with mIGN1D.

File S6. File_S6.dat: Al Hoceima 2016 catalog’s statistics with mIGN1D.

File S7. File_S7.dat: Al Hoceima 2016 catalog’s absolute locations with mTAB3D.

File S8. File_S8.dat: Al Hoceima 2016 catalog’s statistics with mTAB3D.

Additionally, we provide two figures showing the location of those hypocenters (alboran.jpg and ebsz.jpg), which are included as Figures 3 and 5, respectively, in Sánchez-Roldán et al. (2024a).

References:

Sánchez-Roldán, J. L., Álvarez-Gómez, J. A., Martínez-Díaz, J. J., Herrero-Barbero, P., Perea, H., Cantavella, J. V., & Lozano, L. (2024a). New 3D velocity model (mTAB3D) for absolute hypocenter location in southern Iberia and the westernmost mediterranean. Earth and Space Science, 11, e2023EA00299. https://doi.org/10.1029/2023EA002993

Sánchez-Roldán, J. L., Álvarez-Gómez, J. A., Martínez-Díaz, J. J., Herrero-Barbero, P., Perea, H., Lozano, L., & Cantavella, J. V. (2024b). MTAB3D: a 3-D velocity model for absolute hypocenter location in southern Iberia and westernmost Mediterranean. (v1.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.7766525