Download Event Information
Origin
PublicID |
2021p062817 |
UTC Time |
2021-01-24T05:47:52Z |
Latitude |
-51.20 (± 7.3
km)
|
Longitude |
162.06 (± 6.9
km)
|
Depth |
16 km (± 11 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
34 |
Used Station Count |
23 |
Standard Error |
3.67 (s) |
Azimuthal Gap |
158.09 (degrees) |
Minimum Distance |
3.80 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (mB) |
5.8 (± 0.2) |
|
ML |
5.4 (± 0.1) |
10 |
MLv |
5.6 (± 0.2) |
10 |
mB |
5.8 (± 0.2) |
7 |
Mw(mB) |
5.3 (± 0.4) |
7 |
M |
5.5 |
10 |
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).