# Integrated Earthquake Catalog of the Eastern Sector of the Russian Arctic
## 3 Results
### Magnitudes in the Integrated Catalog of the Eastern Sector of the Russian Arctic  
The integrated catalog of the Eastern Sector of the Russian Arctic contains 23,254 events that have different types of magnitude estimates determined by different agencies (Table 4). It is necessary to unify them (bring them to the reference scale of magnitudes). \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Agency**} & \multirow{2}{*}{ \begin{tabular}{c} **Type of** \\ **Magnitude** \\ \end{tabular}  } & \multirow{2}{*}{**Priority**} & \multirow{2}{*}{ \begin{tabular}{c} **Number of** \\ **Events** \\ \end{tabular}  } & \multirow{2}{*}{**Formula for Magnitude**} & \multirow{2}{*}{**Figure**} & \multirow{2}{*}{ \begin{tabular}{c} **M\({}_{\text{min}}\)-M\({}_{\text{max}}\)-** \\ **Initial** \\ **Magnitude Scale** \\ \end{tabular}  } & \multirow{2}{*}{**Note**} \\ \hline GCMT & \(M_{\text{W}}\) & 1 & 105 & \(M=M_{\text{W}}\)GCMT & & 4.7-7.6 & \\ \hline ISC & \(mb\) & 2 & 1287 & \(M=m\)JSC & Figure 13a & 3.0-5.9 & \\ ISC & \(M_{\text{S}}\) & 1 & 4 & \(M=M_{\text{S}}\)SC & Figure 13b & 5.7-7.5 & Strong events before 1976 \\ \hline YAFS & NE, agencies of Russia and the USSR from ISC & \(K_{\text{PS}}\) & 3 & 16,301 & \(M=0.5\,K_{\text{PS}}-1.6\) & Figure 14a,b & 0.6-14.0 & \begin{tabular}{c} Information about energy classes is given in the ISC bulletins \\ \end{tabular}  \\ \hline KAM & KRSC & \(K_{\text{S}}\) & 3 & 4050 & \(M=0.5K_{\text{S}}-0.75\) & Figure 14c & 3.0-13.1 & \\ \hline NICE & NEIS & \(mb\) & 4 & 27 & \(M=m\)JSC \(-0.2\) & Figure 15a & 35.4-9 & \\ \hline MOS & \(mb\) & 4 & 16 & \(M=m\)JSC \(-0.2\) & Figure 15b & 4.0-4.8 & \\ \hline EIDC & \(mb\) & 4 & 24 & \(M=m\)JSC \(+0.2\) & Figure 15c & 3.0-4.3 & \\ \hline IDC & \(mb\) & 4 & 107 & \(M=m\)JSC \(+0.2\) & Figure 15d & 29.4-4.4 & \\ \hline YAFS & ML & 4 & 357 & \(M=M\)JSC \(+0.6\) & Figure 16a & 0.5-3.0 & Unreliable correlation \\ \hline YAFS & MSV & 4 & 95 & \(M=M\)JSC \(+0.2\) & Figure 16b & 0.0-2.1 & Unreliable correlation \\ \hline AEIC & ML & 4 & 351 & \(M=M\)JSC \(+0.2\) & Figure 17a & 22.4-4.2 & \\ \hline MSUGS & \(M\) & 4 & 24 & \(M=M\)JSC \(+0.1\) & Figure 18a & 0.1-4.6 & \\ \hline USCGS & \(mb\) & 4 & 1 & \(M=m\)JSCGS & Figure 18b & 4.1 & Unreliable correlation \\ \hline YAFS & \(M\) & 4 & 104 & \(M=M\)JSC \(+0.1\) & & 32-3.3 & \begin{tabular}{c} Indirect correlation with energy class. \\ The magnitude \(\text{h}^{\text{YAFS}}\) represents a conversion from the energy class \(K_{\text{S}}\) according to the formula of Ravian \\ \(M^{\text{YAFS}}\) = \((K_{\text{S}}-4)/1.8\) \\ \end{tabular}  \\ \hline NERS & \(M\) & 4 & 24 & \(M=M^{\text{YAFS}}+0.2\) & 2.3-2.5 & \begin{tabular}{c} Indirect correlation with energy class. \\ The magnitude \(\text{h}^{\text{YAFS}}\) represents a conversion from the energy class \(K_{\text{S}}\) according to the formula of Ravian \\ \(M^{\text{YAFS}}\) = \((K_{\text{PS}}-4)/1.8\) \\ \end{tabular}  \\ \hline NEIC & ML & 4 & 13 & \(M=M\)JSC \(-0.1\) & Figure 17b & 2.5-4.2 & Unreliablely used indirect correlation \\ \hline NEIC & \(mh_{\text{S}}\) & 4 & 2 & \(M=mh_{\text{S}}\)JSC \(+0.1\) & Figure 17c & 2.6-3.0 & Unreliablely used indirect correlation \\ \hline LAO & \(M\) & 4 & 2 & \(M=M\)JSC \(+0.1\) & Figure 17c & 2.6-3.0 & \begin{tabular}{c} Underlable correlation with energy class. \\ The magnitude \(M^{\text{YAFS}}\) represents a conversion from the energy class \(K_{\text{PS}}\) according to the formula of Ravian \\ \(M^{\text{YAFS}}\) = \((K_{\text{PS}}-4)/1.8\) \\ \end{tabular}  \\ \hline NEIC & \(mh_{\text{S}}\) & 4 & 2 & \(M=mh_{\text{S}}\)JSC \(+0.1\) & Figure 17c & 2.6-3.0 & Unreliablely used indirect correlation \\ \hline LAO & \(M\) & 4 & 2 & \(M=M\)JSC \(+0.1\) & Figure 17a & 4.0 & Very unreliable correlation \\ \hline ZEMSU & \(M\) & 4 & 2 & \(M=M\)JSC \(+0.2\) & Figure 18b & 3.4-4.5 & Very unreliable correlation \\ \hline MOS & \(M\) & 4 & 1 & \(M=M\)JSC \(+0.1\) & Figure 18c & 5.0 & Very unreliable correlation \\ \hline NEIC & \(M\) & 4 & 6 & \(M=M\)JSC \(+0.1\) & & 2.5-4.9 & \