Download Event Information
Origin
PublicID |
2022p771854 |
UTC Time |
2022-10-13T14:03:56Z |
Latitude |
-40.39 (± 4.0
km)
|
Longitude |
173.43 (± 6.9
km)
|
Depth |
146 km (± 9 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
32 |
Used Station Count |
26 |
Standard Error |
0.36 (s) |
Azimuthal Gap |
139.78 (degrees) |
Minimum Distance |
0.56 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
5.7 (± 0.2) |
|
M |
5.7 |
49 |
Mw(mB) |
5.6 (± 0.4) |
7 |
MLv |
5.7 (± 0.2) |
49 |
mB |
6.0 (± 0.2) |
9 |
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).