Download Event Information
Origin
PublicID |
2017p455833 |
UTC Time |
2017-06-18T15:48:13Z |
Latitude |
-43.59 (± 11.5
km)
|
Longitude |
172.64 (± 17.4
km)
|
Depth |
12 km (± 25 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
10 |
Used Station Count |
10 |
Standard Error |
0.44 (s) |
Azimuthal Gap |
120.47 (degrees) |
Minimum Distance |
0.11 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.2 |
|
ML |
2.0 (± 0.3) |
7 |
MLv |
2.2 (± 0.9) |
2 |
M |
2.2 |
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).