Download Event Information
Origin
PublicID |
2022p618228 |
UTC Time |
2022-08-17T17:51:44Z |
Latitude |
-37.69 (± 6.5
km)
|
Longitude |
176.52 (± 9.3
km)
|
Depth |
137 km (± 11 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
23 |
Used Station Count |
17 |
Standard Error |
0.69 (s) |
Azimuthal Gap |
187.91 (degrees) |
Minimum Distance |
0.74 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
2.5 (± 0.3) |
|
ML |
2.6 (± 0.5) |
5 |
MLv |
2.5 (± 0.3) |
6 |
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).