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Origin
PublicID |
2021p074000 |
UTC Time |
2021-01-28T09:04:59Z |
Latitude |
-22.08 (± 13.5
km)
|
Longitude |
-174.10 (± 13.3
km)
|
Depth |
586 km (± 16 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
13 |
Used Station Count |
13 |
Standard Error |
0.78 (s) |
Azimuthal Gap |
147.29 (degrees) |
Minimum Distance |
4.92 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
5.6 |
|
MLv |
5.9 (± 0.2) |
2 |
mB |
5.1 (± 0.7) |
4 |
Mw(mB) |
4.4 (± 0.7) |
4 |
M |
5.6 |
4 |
GeoNet combines magnitudes into a summary magnitude, M, which consists of a weighted average of the individual magnitudes and attempts to be a best possible compromise between all magnitudes for a range of earthquake sizes.
Summary magnitude for GeoNet is then defined as:
M = (2 * MLv + (0.4 * number_of stations(Mw(mB)) - 1) * Mw(mB)) / (2 + (0.4 * number_of_stations(Mw(mB)) - 1))
Where MLv is local magnitude calculated on the vertical component and Mw(mB) is a Mw estimation based of mB by Bormann and Saul (2008).