Download Event Information
Origin
PublicID |
2021p431308 |
UTC Time |
2021-06-09T14:00:54Z |
Latitude |
-34.03 (± 10.4
km)
|
Longitude |
-178.89 (± 16.6
km)
|
Depth |
10 km (± 0 km) |
Depth Type |
operator assigned |
Earth Model |
iasp91 |
Used Phase Count |
19 |
Used Station Count |
18 |
Standard Error |
0.99 (s) |
Azimuthal Gap |
309.98 (degrees) |
Minimum Distance |
4.37 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (mB) |
4.9 (± 0.1) |
|
ML |
4.5 |
1 |
MLv |
4.4 (± 0.1) |
10 |
mB |
4.9 (± 0.1) |
5 |
Mw(mB) |
4.2 (± 0.4) |
5 |
M |
4.3 |
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).