Download Event Information
Origin
PublicID |
2022p768417 |
UTC Time |
2022-10-12T07:32:50Z |
Latitude |
-42.36 (± 2.6
km)
|
Longitude |
172.12 (± 2.4
km)
|
Depth |
3 km (± 2 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
24 |
Used Station Count |
19 |
Standard Error |
0.39 (s) |
Azimuthal Gap |
69.04 (degrees) |
Minimum Distance |
0.05 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
4.7 |
|
mB |
5.0 (± 0.2) |
18 |
ML |
4.4 (± 0.2) |
10 |
MLv |
4.7 (± 0.2) |
104 |
Mw(mB) |
4.3 (± 0.4) |
0 |
M |
4.7 |
104 |
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).