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Origin
PublicID |
3497857 |
UTC Time |
2011-04-16T05:49:22Z |
Latitude |
-43.60 (± 0.0
km)
|
Longitude |
172.76 (± 0.0
km)
|
Depth |
9 km (± 0 km) |
Depth Type |
free |
Earth Model |
nz1dr |
Used Phase Count |
41 |
Used Station Count |
32 |
Standard Error |
0.17 (s) |
Azimuthal Gap |
190.00 (degrees) |
Minimum Distance |
0.02 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (Mw) |
5.0 |
|
ML |
5.3 (± 0.2) |
95 |
Mw |
5.0 |
0 |
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).