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Origin
PublicID |
2020p037869 |
UTC Time |
2020-01-15T00:14:16Z |
Latitude |
-23.33 (± 18.2
km)
|
Longitude |
179.74 (± 19.8
km)
|
Depth |
469 km (± 33 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
11 |
Used Station Count |
10 |
Standard Error |
0.80 (s) |
Azimuthal Gap |
199.17 (degrees) |
Minimum Distance |
6.25 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (Mw(mB)) |
5.7 (± 0.5) |
|
M |
6.1 |
4 |
Mw(mB) |
5.7 (± 0.5) |
4 |
mB |
6.0 (± 0.5) |
4 |
MLv |
6.2 (± 0.0) |
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).