Download Event Information
Origin
PublicID |
2022p550734 |
UTC Time |
2022-07-23T18:30:28Z |
Latitude |
-33.72 (± 39.5
km)
|
Longitude |
179.61 (± 46.5
km)
|
Depth |
335 km (± 57 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
14 |
Used Station Count |
10 |
Standard Error |
0.70 (s) |
Azimuthal Gap |
348.79 (degrees) |
Minimum Distance |
4.29 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
4.2 (± 0.3) |
|
MLv |
4.2 (± 0.3) |
6 |
ML |
3.8 (± 0.3) |
3 |
M |
4.2 |
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).