Download Event Information
Origin
PublicID |
2012p830699 |
UTC Time |
2012-11-03T08:36:46Z |
Latitude |
-43.56 (± 1.0
km)
|
Longitude |
172.40 (± 0.8
km)
|
Depth |
5 km (± 1 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
22 |
Used Station Count |
15 |
Standard Error |
0.48 (s) |
Azimuthal Gap |
97.23 (degrees) |
Minimum Distance |
0.05 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
2.7 (± 0.4) |
|
MLv |
2.7 (± 0.4) |
8 |
ML |
2.9 (± 0.3) |
5 |
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).