Download Event Information
Origin
PublicID |
2022p873987 |
UTC Time |
2022-11-20T08:55:13Z |
Latitude |
-24.74 (± 10.7
km)
|
Longitude |
179.68 (± 42.5
km)
|
Depth |
443 km (± 35 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
20 |
Used Station Count |
13 |
Standard Error |
1.55 (s) |
Azimuthal Gap |
309.74 (degrees) |
Minimum Distance |
4.98 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (mB) |
4.3 |
|
M |
5.2 |
1 |
Mw(mB) |
3.4 (± 0.4) |
1 |
mB |
4.3 |
1 |
MLv |
5.2 |
1 |
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).