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Origin
PublicID |
2014p211339 |
UTC Time |
2014-03-20T04:41:48Z |
Latitude |
-43.58 (± 1.1
km)
|
Longitude |
172.14 (± 0.9
km)
|
Depth |
10 km (± 2 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
25 |
Used Station Count |
18 |
Standard Error |
0.37 (s) |
Azimuthal Gap |
90.64 (degrees) |
Minimum Distance |
0.10 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (ML) |
4.2 (± 0.3) |
|
MLv |
4.1 (± 0.3) |
9 |
ML |
4.2 (± 0.3) |
7 |
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).