Download Event Information
Origin
PublicID |
2015p061477 |
UTC Time |
2015-01-23T17:55:19Z |
Latitude |
-39.11 (± 0.7
km)
|
Longitude |
175.30 (± 1.1
km)
|
Depth |
10 km (± 2 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
72 |
Used Station Count |
60 |
Standard Error |
0.38 (s) |
Azimuthal Gap |
58.50 (degrees) |
Minimum Distance |
0.11 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.9 |
|
MLv |
2.9 (± 0.3) |
37 |
ML |
3.2 (± 0.3) |
37 |
M |
2.9 |
37 |
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).