In the case of high seismic activity, such as during aftershocks immediately following a large earthquake, or during an earthquake swarm, the JMA may change the event processing threshold due to the large number of events. We had changed the threshold as below, but we finished the analysis and added the data on 13, May 2018.
| Time duration | Magnitude threshold | Area |
|---|---|---|
| 21:00 JST, 14 Apr. 2016 – 23:59 JST, 24 July 2016 | 2.0 | Blue rectangle in the below figure |
| Hypocenter determination flag |
K | k | S | s | A | a | Total |
|---|---|---|---|---|---|---|---|
| The number of the earthquakes |
172 | 15 | 0 | 0 | 40595 | 11260 | 52042 |
