Download Event Information
Origin
PublicID |
2024p631965 |
UTC Time |
2024-08-21T19:50:58Z |
Latitude |
-41.28 (± 8.8
km)
|
Longitude |
172.50 (± 7.9
km)
|
Depth |
175 km (± 7 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
23 |
Used Station Count |
16 |
Standard Error |
0.27 (s) |
Azimuthal Gap |
134.95 (degrees) |
Minimum Distance |
0.21 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
3.8 (± 0.2) |
|
MLv |
3.8 (± 0.2) |
24 |
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).