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Origin
PublicID |
2018p812995 |
UTC Time |
2018-10-28T19:23:52Z |
Latitude |
-42.53 (± 3.4
km)
|
Longitude |
172.76 (± 5.3
km)
|
Depth |
3 km (± 5 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
8 |
Used Station Count |
5 |
Standard Error |
0.19 (s) |
Azimuthal Gap |
147.40 (degrees) |
Minimum Distance |
0.44 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.4 |
|
ML |
2.6 (± 0.3) |
19 |
MLv |
2.4 (± 0.3) |
18 |
M |
2.4 |
18 |
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).