Download Event Information
Origin
PublicID |
2023p665403 |
UTC Time |
2023-09-04T04:46:12Z |
Latitude |
-35.11 (± 13.8
km)
|
Longitude |
178.87 (± 20.4
km)
|
Depth |
240 km (± 23 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
13 |
Used Station Count |
10 |
Standard Error |
0.65 (s) |
Azimuthal Gap |
293.25 (degrees) |
Minimum Distance |
2.78 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
3.6 (± 0.4) |
|
ML |
3.5 (± 0.3) |
4 |
MLv |
3.6 (± 0.4) |
2 |
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).