Table 1 Characteristics of energy levels to total microseismic events.
Microseismic events | Energy level | Number of events | Average energy per individual event | Proportion of total events | Total energy per level event | Energy proportion |
|---|---|---|---|---|---|---|
I-level | 0-103 J | 21,633 | 212 J | 75.15% | 4.58 × 106 J | 4.02% |
II-level | 103-104 J | 6464 | 3400 J | 22.45% | 2.19 × 107 J | 19.23% |
III-level | 104-105 J | 626 | 2.95 × 104 J | 2.17% | 1.84 × 107 J | 16.16% |
IV-level | 105-106 J | 47 | 4.3 × 105 J | 0.16% | 2.02 × 107 J | 17.74% |
V-level | 106-107 J | 15 | 3.25 × 106 J | 0.0521% | 4.88 × 107 J | 42.85% |
