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Origin
PublicID |
2018p105458 |
UTC Time |
2018-02-09T00:28:18Z |
Latitude |
-37.59 (± 30.6
km)
|
Longitude |
177.92 (± 21.8
km)
|
Depth |
29 km (± 22 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
14 |
Used Station Count |
14 |
Standard Error |
1.03 (s) |
Azimuthal Gap |
284.43 (degrees) |
Minimum Distance |
0.21 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
1.9 |
|
ML |
2.1 (± 0.5) |
6 |
MLv |
1.9 (± 0.4) |
3 |
M |
1.9 |
3 |
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).