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Origin
PublicID |
2020p038458 |
UTC Time |
2020-01-15T05:29:27Z |
Latitude |
-30.26 (± 29.8
km)
|
Longitude |
178.39 (± 47.9
km)
|
Depth |
586 km (± 49 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
15 |
Used Station Count |
15 |
Standard Error |
0.82 (s) |
Azimuthal Gap |
330.91 (degrees) |
Minimum Distance |
6.60 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
4.5 |
|
MLv |
4.7 |
1 |
mB |
4.0 (± 0.4) |
3 |
Mw(mB) |
3.0 (± 0.4) |
3 |
M |
4.5 |
3 |
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).