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Origin
PublicID |
2019p539926 |
UTC Time |
2019-07-19T18:32:51Z |
Latitude |
-39.04 (± 12.1
km)
|
Longitude |
175.18 (± 12.3
km)
|
Depth |
127 km (± 13 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
23 |
Used Station Count |
17 |
Standard Error |
0.21 (s) |
Azimuthal Gap |
75.90 (degrees) |
Minimum Distance |
0.21 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
3.2 |
|
ML |
2.5 (± 0.6) |
6 |
MLv |
3.2 (± 0.5) |
60 |
M |
3.2 |
60 |
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).