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Origin
PublicID |
2014p960800 |
UTC Time |
2014-12-22T11:54:26Z |
Latitude |
-40.20 (± 1.9
km)
|
Longitude |
173.68 (± 3.0
km)
|
Depth |
181 km (± 7 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
73 |
Used Station Count |
73 |
Standard Error |
0.37 (s) |
Azimuthal Gap |
134.62 (degrees) |
Minimum Distance |
0.63 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.7 |
|
MLv |
2.7 (± 0.3) |
54 |
M |
2.7 |
54 |
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).