Download Event Information
Origin
PublicID |
2015p899090 |
UTC Time |
2015-11-29T15:55:09Z |
Latitude |
-39.50 (± 15.2
km)
|
Longitude |
175.72 (± 9.0
km)
|
Depth |
20 km (± 24 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
11 |
Used Station Count |
11 |
Standard Error |
0.11 (s) |
Azimuthal Gap |
215.22 (degrees) |
Minimum Distance |
0.10 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
0.4 |
|
MLv |
0.4 (± 0.3) |
4 |
ML |
1.1 (± 0.4) |
9 |
M |
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).