Download Event Information
Origin
PublicID |
2023p015894 |
UTC Time |
2023-01-06T21:08:18Z |
Latitude |
-38.38 (± 4.8
km)
|
Longitude |
175.88 (± 4.2
km)
|
Depth |
157 km (± 7 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
53 |
Used Station Count |
37 |
Standard Error |
0.51 (s) |
Azimuthal Gap |
54.34 (degrees) |
Minimum Distance |
0.27 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
3.4 (± 0.4) |
|
MLv |
3.4 (± 0.4) |
55 |
ML |
2.5 (± 0.3) |
4 |
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).