Download Event Information
Origin
PublicID |
2019p310816 |
UTC Time |
2019-04-26T00:01:40Z |
Latitude |
-32.45 (± 25.4
km)
|
Longitude |
179.13 (± 54.0
km)
|
Depth |
461 km (± 40 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
20 |
Used Station Count |
13 |
Standard Error |
1.09 (s) |
Azimuthal Gap |
348.95 (degrees) |
Minimum Distance |
5.15 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
4.0 (± 0.1) |
|
MLv |
4.0 (± 0.1) |
6 |
ML |
4.1 (± 0.2) |
7 |
mB |
4.2 (± 0.4) |
4 |
Mw(mB) |
3.3 (± 0.4) |
4 |
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).