Download Event Information
Origin
PublicID |
2024p299717 |
UTC Time |
2024-04-20T21:29:09Z |
Latitude |
-35.72 (± 17.4
km)
|
Longitude |
178.31 (± 15.1
km)
|
Depth |
218 km (± 27 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
20 |
Used Station Count |
16 |
Standard Error |
0.49 (s) |
Azimuthal Gap |
272.74 (degrees) |
Minimum Distance |
1.84 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
3.8 (± 0.2) |
|
ML |
2.9 |
1 |
MLv |
3.8 (± 0.2) |
25 |
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).