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Origin
PublicID |
2018p947882 |
UTC Time |
2018-12-17T17:11:16Z |
Latitude |
-36.31 (± 9.9
km)
|
Longitude |
177.68 (± 10.8
km)
|
Depth |
195 km (± 13 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
24 |
Used Station Count |
14 |
Standard Error |
0.64 (s) |
Azimuthal Gap |
260.83 (degrees) |
Minimum Distance |
1.35 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.9 |
|
ML |
3.0 (± 0.3) |
8 |
MLv |
2.9 (± 0.4) |
8 |
M |
2.9 |
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).