Download Event Information
Origin
PublicID |
2017p446099 |
UTC Time |
2017-06-15T01:21:44Z |
Latitude |
-38.61 (± 0.9
km)
|
Longitude |
176.20 (± 1.3
km)
|
Depth |
8 km (± 1 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
107 |
Used Station Count |
104 |
Standard Error |
0.72 (s) |
Azimuthal Gap |
23.34 (degrees) |
Minimum Distance |
0.06 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
3.8 |
|
MLv |
3.8 (± 0.2) |
78 |
ML |
4.0 (± 0.2) |
78 |
M |
3.8 |
78 |
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).