# Integrated Earthquake Catalog of the Ossetian Sector of the Greater Caucasus
## 3 Results
### Magnitudes in the Integrated Catalog of the Ossetian Sector of the Greater Caucasus
Regressions with \(mb^{\rm ISC}\) and \(Mk\), where both are defined, turned out to be very close (Figure 11). This confirms the hypothesis that the relationship between different estimates is linear over a wide range of magnitudes. Only magnitude determinations \(MD^{\rm AFAD}\), \(MD^{\rm DDA}\), \(MS^{\rm TIF}\) have 24 events. The unified magnitude estimates constructed for them are considered to be unreliable. For them, the relationships are poorly defined due to low statistics (Figure 12). Thus, the unified magnitude is poorly determined for less than 0.2% of events. All statistics, magnitude conversion formulas, and correlation coefficients are given in Table 4. The 95% confidence intervals of the obtained relationships are shown in Figures 10-12. For reliably determined ratios (Figures 10 and 11), the confidence interval is less than 0.1. Figure 10: Basic shift-type correlation ratios for magnitudes \(MW^{\rm GCMT}\), \(mb^{\rm ISC,NEIC}\), and energy class \(k\). Gray dots in (**c**,**d**) are earthquakes from catalogs ZEMSU and NC, and black dots are from catalogs GEOR71 and GEOR04. Dashed lines show 95% confidence intervals. Figure 11: _Cont._ \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Agency** & \begin{tabular}{c} **Type of** \\ **Magnitude** \\ \end{tabular} & **Priority** & \begin{tabular}{c} **Number** \\ **of Events** \\ \end{tabular} & \begin{tabular}{c} **Magnitude** \\ **in the Integrated Catalog** \\ \end{tabular} & **Figure** & \begin{tabular}{c} **Minin-** \\ **Max. Initial** \\ **Massitude Scale** \\ \end{tabular} & \begin{tabular}{c} **Correlation** \\ **Coefficient.** \\ **Note** \\ \end{tabular} \\ \hline GCMT & MW & 1 & 10 & \(M=MW^{\rm GCMT}\) & – & 5.1–7.0 & \\ \hline ISC & mb & 2 & 246 & \(M=ml^{\rm SC}\) & 10a & 3.1–5.7 & 0.719 \\ \hline NEIC, NEIS & mb & 2 & 13 & \(M=mb^{\rm NEIC}\) & 10b & 3.5–4.5 & 0.798 \\ \hline ZEMSU, GEOR71 & Mk & 3 & 2917 & \(M=Mk=k/2-1.1\) & 10c,e & & 0.563 \\ \hline NC, GEOR04, ISC & Mk & 3 & 12,954 & \(M=Mk=k/2-1.4\) & 10d,e & & 0.628 \\ \hline ZEMSU & MPV & 4 & 2 & \(M=MPV^{\rm ZEMSU}-0.4\) & 11a & 4.7–5.0 & 0.596 \\ \hline MOS & mb & 4 & 48 & \(M=mb^{\rm MOS}-0.3\) & 11b & 3.5–4.8 & 0.755 \\ \hline EIDC & mb & 4 & 1 & \(M=mb^{\rm EIDCS}+0.1\) & 11c & 3.6 & 0.763 \\ \hline AFAD & ML & 4 & 15 & \(M=\rm ML^{\rm AFAF}+0.1\) & 11d & 1.3–3.0 & 0.602 \\ \hline AZER & ML & 4 & 6 & \(M=0.75 ML^{\rm AZER}+0.94\) & 11e & 1.4–1.8 & 0.835 \\ \hline CSEM & ML & 4 & 32 & \(M=0.54 ML^{\rm CSEM}+1.27\) & 11f & 0.3–2.8 & 0.831 \\ \hline MOS & MU & 4 & 4 & \(M=M\rm ML^{\rm MOS}+0.4\) & 11g & 1.8–3.2 & 0.891 \\ \hline NORS & MU & 4 & 13 & \(M=M\rm ML^{\rm NORS}+0.4\) & 11h & 0.1–1.8 & 0.932 \\ \hline AFAD & MD & 5 & 13 & \(M=MD^{\rm AFAD}+0.2\) & 12a & 2.7–3.2 & \begin{tabular}{c} 0.126 \\ **Unreliable few** \\ data \\ \end{tabular} \\ \hline DDA & MD & 5 & 9 & \(M=MD^{\rm DDA}+0.2\) & 12b & 2.4–3.3 & \
\begin{tabular}{c} 0.581 \\ **Unreliable few** \\ data \\ \end{tabular} \\ \hline TIF & MS & 5 & 2 & \(M=M^{\rm STIF}+0.4\) & 12c & 3.0 &
\begin{tabular}{c} 0.649 \\ **Unreliable few** \\ data \\ \end{tabular} \\ \hline Total & & & 16,285 & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Magnitudes in the integrated catalog. Figure 11: Correlation ratios for different magnitudes with \(mb^{\rm ISC}\) (black) and \(Mk\) (red). Dashed lines show 95% confidence intervals. Figure 12: Unreliable shift-type correlation ratios for different magnitudes with \(mb^{\rm ISC}\). Dashed lines show 95% confidence intervals.