Séisme très faible mag. 2.8 - 149 km au nord de Longyearbyen, Spitsbergen, Svalbard, vendredi, le 23 juillet 2021 02:16 -

Quakes around its antipode during the following 3 jours
Check different time intervals: 24 hours | 2 days
Date & heure: 23 Jul 2021 02:16:48 UTC -
Magnitude: 2.8
Profondeur: 22 km
Épicentre latitude / longitude: 79.56°N / 16.07°E (Svalbard et Jan Mayen)
Antipode latitude / longitude: 79.56°S / 163.93°W (Antarctique)
Source de données principale: EMSC (European-Mediterranean Seismological Centre)
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Quakes within 30 degrees from seismic antipode up to 3 jours 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 3 jours around the antipode of the quake was 0. This is compared to the average number of 0.11 quakes during preceding intervals of 3 jours with a standard deviation (σ) of 0.4, calculated by analzing all 100 preceding intervals of 3 jours for the same region.
Interpretation:
Note: At a magnitude of 2.8, it is unlikely that this quake could affect areas around its antipode. If an increase or decrease of quake is detected, it is likely caused by other factors.
There is no significant variation in the number of quakes that occurred around the antipode within 3 jours.
Mag classTotal #AverageσObserved deviation
6+000n/a
5+00.10.3-0.1 (-0.3σ)
4+000.2-0 (-0.2σ)
3+000n/a
Total00.110.4-0.1 (-0.3σ)
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

List of quakes

Showing quakes magnitude 3.0 or higher (total: 0).
Date et l'heureMag
Profondeur
LieuDétail
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