Now, many of us are accustomed to describing these size and value anomalies as reflecting market inefficiencies, or investor errors.
Côte d'Ivoire ranks near the top of Auerbach's list of value anomalies.
The high-value anomaly of Young's modulus and the low-value anomaly of Poisson's ratio represent high brittleness of shale.
A high-value anomaly of Young's modulus and a low-value anomaly of Poisson's ratio can be used to evaluate the rock brittleness and to infer "sweet spots" of shale gas reservoirs (Harris et al. 2011; Zong et al. 2013).
Therefore, high b-value anomalies may be found in a descending slab.
Since an apparent seismicity change is often due to man-made causes, the Z-value anomalies found in the present study should be carefully examined.
Fig. 4. (a) (d) (g) (j) Red open circles are N = 150 epicenters sampled around the nodes with the high Z-value anomalies detected in Fig. 3.
Although most of the index parameters were within acceptable values, anomalies covering a period of several years were discovered at a few F-net stations.
In order to estimate the statistical significance of the Z-value anomalies detected in this study, synthetic seismicity data is generated, and Z-value matrices and the distributions of maximum Z-values, Zmax, and minimum Z-values, Zmin, are determined.
From this, it can be concluded that there is no significant magnitude shift or stretch in the entire study area before, or after, the start time of the Z-value anomalies.
Another method of displaying Z-value anomalies that could be false alarms is by the use of alarm cubes (Wiemer, 1996; Wyss et al., 1996; Wyss and Martirosyan, 1998).
