# Analysis of Information Availability for Seismic and Volcanic Monitoring Systems: A Review
## 2 Methodology Validation
### Study Quality Assessment
\begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline
**Article (Author)** & **Q1** & **Q2** & **Q3** & **Q4** & **Q5** & **Q6** & **Q7** & **Q8** & **Q9** & **Q10** \\ \hline A17, [PERSON] et al. [39] & ✓ & ✓ & ✓ & ✓ & ✓ & & ✓ & ✓ & & \\ \hline A18, [PERSON] et al. [40] & & ✓ & & ✓ & ✓ & ✓ & & ✓ & & \\ \hline A19, [PERSON] et al. [41] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & & ✓ & ✓ & ✓ \\ \hline A20, [PERSON] et al. [42] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A21, [PERSON] et al. [43] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A22, [PERSON] et al. [44] & ✓ & & ✓ & & ✓ & ✓ & ✓ & ✓ & & \\ \hline A23, [PERSON] et al. [45] & ✓ & ✓ & ✓ & & ✓ & ✓ & ✓ & & & \\ \hline A24, [PERSON] et al. [46] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A25, [PERSON] et al. [47] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A26, [PERSON] et al. [48] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A27, [PERSON] et al. [49] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A28, [PERSON] et al. [50] & ✓ & ✓ & & & ✓ & ✓ & ✓ & & & \\ \hline A29, [PERSON] et al. [51] & ✓ & ✓ & & ✓ & ✓ & ✓ & ✓ & ✓ & & \\ \hline A30, [PERSON] et al. [52] & ✓ & & & & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A31, [PERSON] et al. [53] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A32, [PERSON] et al. [54] & & & & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A33, [PERSON] et al. [18] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A34, [PERSON] et al. [55] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A35, [PERSON] et al. [56] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A36, [PERSON] et al. [57] & ✓ & ✓ & & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A37, [PERSON] et al. [58] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A38, [PERSON] et al. [59] & ✓ & ✓ & & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A39, [PERSON] et al. [60] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A40, [PERSON] et al. [61] & ✓ & ✓ & & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A41, [PERSON] et al. [62] & & & ✓ & & & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A42, [PERSON] et al. [63] & ✓ & ✓ & & & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A43, [PERSON] et al. [64] & ✓ & & & & & ✓ & ✓ & ✓ & ✓ & \\ \hline A44, [PERSON] et al. [65] & ✓ & ✓ & & & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A45, [PERSON] et al. [66] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A46, [PERSON] et al. [67] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A47, [PERSON] et al. [68] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A48, [PERSON] et al. [69] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A49, [PERSON] et al. [70] & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ & ✓ \\ \hline A50, [PERSON] et al. [71] & ✓ & & & & ✓ & ✓ & ✓ & ✓ & ✓ & \\ \hline A51, [PERSON] et al. [72] & ✓ & & & & ✓ & ✓ & ✓ & ✓ & & \\ \hline \hline \end{tabular}
\end{table} 
Table 3: _Cont._In contrast, 10% of these overlooked important effects (Q10), and only 14 studies (Q9) propose explicit research questions. Concerning the results, 27 studies propose ad hoc solutions with non-representative samples; therefore, it cannot be generalized in other seismic-volcanic monitoring networks (Q3). Due to the aforementioned, the relevant information search to resolve research questions raised is not consolidated as a broad solution. Therefore, it is necessary to address the four identified groups, and to establish a proposal that complements the studies and advances that have already been made to date. Finally, this study focussed on the availability of information improvement for seismological data centers.