Download Event Information
Origin
PublicID |
2023p122410 |
UTC Time |
2023-02-15T07:00:32Z |
Latitude |
-39.17 (± 31.6
km)
|
Longitude |
174.85 (± 50.4
km)
|
Depth |
78 km (± 61 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
16 |
Used Station Count |
16 |
Standard Error |
2.03 (s) |
Azimuthal Gap |
214.51 (degrees) |
Minimum Distance |
0.61 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
4.0 |
|
ML |
3.1 (± 0.6) |
13 |
MLv |
4.0 (± 1.0) |
3 |
M |
4.0 |
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).