Download Event Information
Origin
PublicID |
2023p665898 |
UTC Time |
2023-09-04T09:10:11Z |
Latitude |
-34.90 (± 12.7
km)
|
Longitude |
-179.66 (± 16.9
km)
|
Depth |
166 km (± 68 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
15 |
Used Station Count |
13 |
Standard Error |
0.85 (s) |
Azimuthal Gap |
302.60 (degrees) |
Minimum Distance |
3.52 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
3.8 (± 0.5) |
|
ML |
3.8 (± 0.2) |
5 |
MLv |
3.8 (± 0.5) |
2 |
M |
3.8 |
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).