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Origin
PublicID |
2019p632050 |
UTC Time |
2019-08-22T20:36:40Z |
Latitude |
-41.71 (± 5.1
km)
|
Longitude |
172.23 (± 6.5
km)
|
Depth |
78 km (± 9 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
17 |
Used Station Count |
10 |
Standard Error |
0.34 (s) |
Azimuthal Gap |
111.29 (degrees) |
Minimum Distance |
0.25 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (ML) |
2.3 (± 0.2) |
|
ML |
2.3 (± 0.2) |
6 |
MLv |
1.9 (± 0.3) |
4 |
M |
1.9 |
4 |
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).