# Regional Seismicity of the Northeastern Tibetan Plateau Revealed by Crustal Magnetic Anomalies
## 6 Relationships Between the Magnetic Anomalies and Earthquakes
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c} \hline
**NO.** & **Date** & **Lai/(\({}^{3}\))** & **Lon/(\({}^{3}\))** & **Ms** & **Depth/(km)** & \(\Delta F\)/(\({}^{3}\))** & **\(\Delta H\)/(\({}^{3}\))** & **\(\Delta N\)/(\({}^{3}\))** & **\(\Delta N\)/(\({}^{3}\))** & **\(\Delta N\)/(\({}^{3}\))** & **\(\Delta N\)/(\({}^{3}\))** \\ \hline
50 & 13 April 2010 & 33.17 & 96.55 & 6.9 & 17 & \(-\)44.6 & \(-\)34.3 & \(-\)35 & \(-\)11.5 & \(-\)29.2 & \(-\)1.1 & 0.5 \\ \hline
51 & 14 April 2010 & 33.2 & 96.45 & 6.1 & 8 & \(-\)38.5 & \(-\)39.3 & \(-\)17 & \(-\)17.8 & \(-\)1.7 & 1.2 \\ \hline  & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} \\ \hline  & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} \\ \hline  & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} \\ \hline
52 & 7 February 1958 & 31.46 & 104.01 & 6 & 25 & \(-\)203.5 & \(-\)148.6 & \(-\)146.6 & 66 & \(-\)140.5 & 6.3 & 1.2 \\
53 & 9 November 1960 & 32.71 & 103.63 & 6.3 & 25 & \(-\)43.4 & \(-\)7.3 & \(-\)6.5 & 28.5 & \(-\)50.3 & 2.9 & \(-\)18.8 \\
54 & 11 August 1973 & 33 & 104.02 & 6.1 & 33 & \(-\)9.7 & 3.3 & 4.2 & 32.4 & \(-\)15.1 & 3.4 & \(-\)0.9 \\
55 & 16 August 1976 & 32.75 & 104.16 & 6.9 & 16 & 7.1 & 12.5 & 12.5 & 4.5 & \(-\)1.1 & 0.5 & \(-\)0.8 \\
56 & 21 August 1976 & 32.57 & 104.25 & 6.4 & 33 & \(-\)22 & 30.9 & 30.4 & \(-\)13 & \(-\)54.5 & \(-\)1.2 & \(-\)4 \\
57 & 23 August 1976 & 32.49 & 104.18 & 6.7 & 33 & \(-\)37.3 & 11.5 & 11 & \(-\)14.1 & \(-\)58.4 & \(-\)1.4 & \(-\)32.2 \\ \hline
58 & 22 September 1989 & 31.58 & 102.43 & 6.1 & 15 & \(-\)63.9 & \(-\)30.8 & \(-\)31.4 & \(-\)6.4 & \(-\)57.6 & \(-\)0.9 & \(-\)1 \\ \hline
59 & 8 August 2017 & 33.19 & 103.86 & 6.5 & 9 & \(-\)15 & 7.5 & 8.3 & 34.8 & \(-\)25.1 & 3.7 & \(-\)15.5 \\
60 & 10 June 2022 & 32.25 & 101.82 & 6 & 13 & \(-\)21.8 & 8.6 & 7.3 & \(-\)39.3 & \(-\)35.5 & \(-\)4.3 & \(-\)2 \\ \hline  & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} & \multicolumn{11}{c}{} \\ \hline
61 & 20 January 1954 & 41.14 & 108.62 & 6.3 & 15 & 12.8 & 41.8 & 44.4 & 12.8 & \(-\)9.5 & 2.2 & \(-\)26.6 \\ \hline
62 & 3 May 1996 & 40.77 & 109.66 & 6 & 26 & \(-\)149.9 & \(-\)50.1 & \(-\)46.4 & 36.8 & \(-\)144.6 & 4.5 & \(-\)1.7 \\ \hline \end{tabular}
\end{table} 
Table 2: _Cont._Table 2 and Figure 6 show that strong earthquakes have occurred mainly in the region where the magnetic anomalies were negative or undergo a strong-weak transition. The proportions of earthquakes in areas with negative magnetic anomalies with geomagnetic elements \(\Delta F\), \(\Delta Y\), \(\Delta Z\), \(\Delta I\), and \(\Delta D\) are 63%, 66%, 69%, 65%, and 66%, respectively. Values of \(\Delta X\) and \(\Delta H\) are 34 and 26, respectively, in both the positive and negative areas. In general, more earthquakes occur in the areas with negative magnetic anomalies than in the areas with positive anomalies.