Download Event Information
Origin
PublicID |
2015p389806 |
UTC Time |
2015-05-25T05:27:35Z |
Latitude |
-30.50 (± 30.0
km)
|
Longitude |
179.55 (± 72.3
km)
|
Depth |
326 km (± 78 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
15 |
Used Station Count |
9 |
Standard Error |
0.97 (s) |
Azimuthal Gap |
349.81 (degrees) |
Minimum Distance |
7.36 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
5.1 |
|
MLv |
5.1 (± 0.3) |
7 |
mB |
4.7 (± 0.1) |
2 |
Mw(mB) |
4.0 (± 0.4) |
2 |
M |
5.1 |
7 |
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).