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Origin
PublicID |
2019p218151 |
UTC Time |
2019-03-22T17:11:02Z |
Latitude |
-34.19 (± 26.4
km)
|
Longitude |
178.10 (± 20.6
km)
|
Depth |
355 km (± 29 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
21 |
Used Station Count |
18 |
Standard Error |
1.05 (s) |
Azimuthal Gap |
313.93 (degrees) |
Minimum Distance |
3.55 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
3.4 |
|
M |
3.4 |
8 |
ML |
3.6 (± 0.2) |
10 |
MLv |
3.4 (± 0.2) |
8 |
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).