Download Event Information
Origin
PublicID |
2022p714540 |
UTC Time |
2022-09-22T09:07:06Z |
Latitude |
-40.81 (± 3.6
km)
|
Longitude |
174.19 (± 3.2
km)
|
Depth |
53 km (± 8 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
34 |
Used Station Count |
25 |
Standard Error |
0.42 (s) |
Azimuthal Gap |
77.21 (degrees) |
Minimum Distance |
0.20 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
5.8 (± 0.1) |
|
M |
5.8 |
49 |
Mw(mB) |
5.4 (± 0.4) |
0 |
MLv |
5.8 (± 0.1) |
49 |
ML |
5.7 (± 0.3) |
16 |
mB |
5.8 (± 0.1) |
13 |
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).