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Origin
PublicID |
2019p112156 |
UTC Time |
2019-02-11T11:56:51Z |
Latitude |
-40.59 (± 2.3
km)
|
Longitude |
175.88 (± 2.9
km)
|
Depth |
23 km (± 5 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
25 |
Used Station Count |
13 |
Standard Error |
0.59 (s) |
Azimuthal Gap |
83.70 (degrees) |
Minimum Distance |
0.08 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
1.0 |
|
ML |
1.4 (± 0.3) |
8 |
MLv |
1.0 (± 0.3) |
7 |
M |
1.0 |
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).