Download Event Information
Origin
PublicID |
2023p943943 |
UTC Time |
2023-12-16T06:10:53Z |
Latitude |
-24.40 (± 4.0
km)
|
Longitude |
179.47 (± 5.3
km)
|
Depth |
543 km (± 9 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
32 |
Used Station Count |
28 |
Standard Error |
2.26 (s) |
Azimuthal Gap |
91.04 (degrees) |
Minimum Distance |
5.37 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (mB) |
5.7 (± 0.2) |
|
mB |
5.7 (± 0.2) |
18 |
Mw(mB) |
5.2 (± 0.4) |
30 |
MLv |
5.7 (± 0.9) |
2 |
M |
5.2 |
30 |
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).