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Origin
PublicID |
2019p875006 |
UTC Time |
2019-11-20T18:03:12Z |
Latitude |
-37.17 (± 5.6
km)
|
Longitude |
176.91 (± 4.8
km)
|
Depth |
192 km (± 8 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
62 |
Used Station Count |
52 |
Standard Error |
0.53 (s) |
Azimuthal Gap |
162.21 (degrees) |
Minimum Distance |
0.55 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
4.2 |
|
ML |
3.6 (± 0.3) |
7 |
MLv |
4.2 (± 0.5) |
104 |
M |
4.2 |
104 |
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).