Download Event Information
Origin
PublicID |
2020p112506 |
UTC Time |
2020-02-11T15:02:14Z |
Latitude |
-33.01 (± 5.3
km)
|
Longitude |
-178.19 (± 14.3
km)
|
Depth |
0 km (± 0 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
34 |
Used Station Count |
22 |
Standard Error |
2.23 (s) |
Azimuthal Gap |
203.59 (degrees) |
Minimum Distance |
3.75 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
5.1 |
|
ML |
4.8 (± 0.2) |
12 |
MLv |
5.1 (± 0.2) |
15 |
mB |
5.5 (± 0.1) |
9 |
Mw(mB) |
5.0 (± 0.4) |
9 |
M |
5.1 |
15 |
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).