Download Event Information
Origin
PublicID |
2017p577321 |
UTC Time |
2017-08-02T14:37:05Z |
Latitude |
-42.33 (± 14.3
km)
|
Longitude |
173.54 (± 21.0
km)
|
Depth |
11 km (± 38 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
10 |
Used Station Count |
10 |
Standard Error |
0.50 (s) |
Azimuthal Gap |
156.43 (degrees) |
Minimum Distance |
0.09 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.4 |
|
ML |
1.9 (± 0.1) |
2 |
MLv |
2.4 (± 0.7) |
2 |
M |
2.4 |
2 |
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).