Download Event Information
Origin
PublicID |
2022p901248 |
UTC Time |
2022-11-30T11:05:05Z |
Latitude |
-38.80 (± 2.0
km)
|
Longitude |
176.01 (± 3.0
km)
|
Depth |
5 km (± 0 km) |
Depth Type |
operator assigned |
Earth Model |
iasp91 |
Used Phase Count |
27 |
Used Station Count |
21 |
Standard Error |
0.48 (s) |
Azimuthal Gap |
84.49 (degrees) |
Minimum Distance |
0.11 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
2.9 (± 0.3) |
|
MLv |
2.9 (± 0.3) |
8 |
ML |
2.6 (± 0.2) |
15 |
M |
2.9 |
8 |
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).