Download Event Information
Origin
PublicID |
2023p557883 |
UTC Time |
2023-07-26T10:00:09Z |
Latitude |
-34.99 (± 25.6
km)
|
Longitude |
178.97 (± 24.9
km)
|
Depth |
5 km (± 0 km) |
Depth Type |
operator assigned |
Earth Model |
iasp91 |
Used Phase Count |
23 |
Used Station Count |
23 |
Standard Error |
1.10 (s) |
Azimuthal Gap |
284.21 (degrees) |
Minimum Distance |
2.62 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (Mw(mB)) |
3.8 (± 0.4) |
|
MLv |
4.3 (± 0.1) |
13 |
ML |
4.1 (± 0.2) |
19 |
mB |
4.6 (± 0.1) |
3 |
Mw(mB) |
3.8 (± 0.4) |
0 |
M |
4.3 |
13 |
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).