Major magnitude 7.1 earthquake - South of the Kermadec Islands on Sunday, May 25, 1997 at 23:22 GMT
Quakes around its antipode during the following 2 days
Date & time: 25 May 1997 23:22:33 UTC
Magnitude: 7.1
Depth: 333 km
Epicenter latitude / longitude: 32.115°S / 179.791°E
(international territory)
Antipode latitude / longitude: 32.115°N / 0.209°W
(Algeria)
Primary data source: USGS (United States Geological Survey)
Magnitude: 7.1
Depth: 333 km
Epicenter latitude / longitude: 32.115°S / 179.791°E
(international territory)Antipode latitude / longitude: 32.115°N / 0.209°W
(Algeria)Primary data source: USGS (United States Geological Survey)
Quakes within 30 degrees from seismic antipode up to 2 days after the quake
The area around the antipode is marked with the big circle on the map.
The total number of quakes that occurred within 2 days around the antipode of the quake was 0. This is compared to the average number of 0 quakes during preceding intervals of 2 days with a standard deviation (σ) of 0, calculated by analzing all 100 preceding intervals of 2 days for the same region.
Interpretation:
There is no significant variation in the number of quakes that occurred around the antipode within 2 days.
Interpretation:
There is no significant variation in the number of quakes that occurred around the antipode within 2 days.
| Mag class | Total # | Average | σ | Observed deviation |
| 6+ | 0 | 0 | 0 | n/a |
| 5+ | 0 | 0 | 0 | n/a |
| 4+ | 0 | 0 | 0 | n/a |
| 3+ | 0 | 0 | 0 | n/a |
| Total | 0 | 0 | 0 | n/a |
Explanation:
BLACK = Number of quakes within normal statistical range
RED = Significantly lower than normal number of quakes
GREEN = Significantly higher than normal number of quakes
