Supplements to "Energy-magnitude station corrections across the conterminous United States"
Creators: name: Bindi, Dino
name: Di Giacomo, Domenico
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Seismology

description: This document contains:

1)  the list of citations to the seismic networks used in paper "Energy-magnitude station corrections across the conterminous United States", by Bindi D. and D. Di Giacomo, accepted for publication  in the Bull. Seim. Soc. of Am. (July, 2024). References are given to both permanent and temporary networks; for stations not registered in the International Federation of Digital Seismograph Networks (FDSN), only the network code is provided. Citations are compiled using the FDSN network citations service: https://www.fdsn.org/networks/citation/ ;

2) figure figure_stCorr_Rayleigh.pdf showing the energy magnitude station correctons obtained for the conterminous US and the Rayleigh attenuation maps at 3, 6 , and 12 s as computed by Magrini et al, 2021, Scientific Report 11, https://doi.org/10.1038/s41598-021-89497-6. The Figure is prepared with the Generic Mapping Tools software ( Wessel, et al, 2019, Geochemistry, Geophysics, Geosystems 20, https://doi.org/10.1029/2019GC008515);

3)  table me_station_corrections.csv in comma-seperated format containing information on  stations and energy magnitude corrections in  the conterminous United States (Bindi D. and D. Di Giacomo,  2024, Bull. Seim. Soc. of Am.);

4) table table_networks.csv in comma-separated format containing the list of considered networks in the conterminous US, the number of recordings per network, and the number of stations per network as shown in Figure 2 of Bindi and Di Giacomo (2024, Bull. Seim. Soc. of Am).

The Figure compares the spatial distribution of the energy magnitude station corrections (Bindi and Di Giacomo, 2024,  Bull. Seim. Soc. of Am) with  with the Rayleigh attenuation maps at three different periods (i.e., 3, 6, and 12 s) as obtained by  Magrini et al (2021). Since the focus of the comparison is only on the large-scale spatial patterns, the attenuation maps are normalized between 0 and 1. The Rayleigh attenuation map for 3 s shows the typical large-scale attenuation trend decreasing eastward: relatively high attenuation corresponding to thick sedimentary basins in the Interior Plains, in the Coastal Plains, and in active tectonic regions such as in the Pacific Mountain and in California along the San Andreas fault, and low attenuation in the Columbia mountains and in the Eastern cratonic part. At 12s, the  large-scale pattern of eastward decreasing attenuation almost disappears, indicating significant changes in attenuation with depth. Despite their different meanings, the distribution of the station corrections show some similarity to the patterns characterizing the Rayleigh attenuation maps at different periods (and therefore sensitive to different depths). If we estimate the degree of similarity between each pair of maps using the RV coefficient (Robert and  Escoufier, 1976), we obtain  RV=0.54, 0.42, and 0.27 for the comparison with the 3s, 6s, and 12 s maps, respectively (for comparison, the RV computed between the 3s and 12s maps is 0.78). Since the magnitude station corrections can be thought of as a propagation effect that occurs over the portion of seismic rays overlapping below the station, the decrease in RV with depth is expected as the variability is shifted to the path-to-path residuals  with increasing depth.