Download Event Information
Origin
PublicID |
2022p725906 |
UTC Time |
2022-09-26T14:02:50Z |
Latitude |
-40.81 (± 4.3
km)
|
Longitude |
175.34 (± 3.1
km)
|
Depth |
23 km (± 7 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
15 |
Used Station Count |
10 |
Standard Error |
0.43 (s) |
Azimuthal Gap |
143.24 (degrees) |
Minimum Distance |
0.13 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
0.8 (± 0.4) |
|
ML |
1.4 (± 0.5) |
7 |
MLv |
0.8 (± 0.4) |
3 |
M |
0.8 |
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).