Download Event Information
Origin
PublicID |
2023p007281 |
UTC Time |
2023-01-03T16:39:21Z |
Latitude |
-37.60 (± 2.2
km)
|
Longitude |
175.69 (± 2.3
km)
|
Depth |
7 km (± 3 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
39 |
Used Station Count |
33 |
Standard Error |
0.36 (s) |
Azimuthal Gap |
63.30 (degrees) |
Minimum Distance |
0.06 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
5.1 (± 0.2) |
|
mB |
5.5 (± 0.7) |
2 |
ML |
5.1 (± 0.3) |
19 |
MLv |
5.1 (± 0.2) |
29 |
Mw(mB) |
5.0 (± 0.7) |
0 |
M |
5.1 |
29 |
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).