Download Event Information
Origin
PublicID |
2022p936056 |
UTC Time |
2022-12-13T08:11:03Z |
Latitude |
-35.84 (± 11.2
km)
|
Longitude |
178.30 (± 10.8
km)
|
Depth |
182 km (± 18 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
30 |
Used Station Count |
22 |
Standard Error |
0.53 (s) |
Azimuthal Gap |
259.62 (degrees) |
Minimum Distance |
1.72 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
4.0 (± 0.2) |
|
ML |
3.6 (± 0.2) |
4 |
MLv |
4.0 (± 0.2) |
43 |
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).