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Origin
PublicID |
2015p940031 |
UTC Time |
2015-12-14T19:28:49Z |
Latitude |
-37.64 (± 5.1
km)
|
Longitude |
178.22 (± 5.0
km)
|
Depth |
31 km (± 6 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
28 |
Used Station Count |
18 |
Standard Error |
0.52 (s) |
Azimuthal Gap |
146.40 (degrees) |
Minimum Distance |
0.10 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.8 |
|
MLv |
2.8 (± 0.1) |
14 |
ML |
3.1 (± 0.1) |
14 |
M |
2.8 |
14 |
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).