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Origin
PublicID |
2021p364565 |
UTC Time |
2021-05-15T21:20:25Z |
Latitude |
-41.19 (± 3.7
km)
|
Longitude |
172.68 (± 4.7
km)
|
Depth |
171 km (± 4 km) |
Depth Type |
free |
Earth Model |
tab |
Used Phase Count |
62 |
Used Station Count |
51 |
Standard Error |
0.58 (s) |
Azimuthal Gap |
112.71 (degrees) |
Minimum Distance |
0.21 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
3.5 (± 0.2) |
|
MLv |
3.5 (± 0.2) |
10 |
M |
3.5 |
10 |
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).