Download Event Information
Origin
PublicID |
2018p469775 |
UTC Time |
2018-06-23T19:36:30Z |
Latitude |
-40.28 (± 5.5
km)
|
Longitude |
176.64 (± 11.8
km)
|
Depth |
15 km (± 17 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
10 |
Used Station Count |
10 |
Standard Error |
0.12 (s) |
Azimuthal Gap |
181.52 (degrees) |
Minimum Distance |
0.01 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
1.6 |
|
MLv |
1.6 (± 0.2) |
6 |
M |
1.6 |
6 |
ML |
2.0 (± 0.2) |
7 |
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).