Download Event Information
Origin
PublicID |
2016p193020 |
UTC Time |
2016-03-12T10:01:31Z |
Latitude |
-43.53 (± 5.4
km)
|
Longitude |
172.81 (± 8.8
km)
|
Depth |
19 km (± 7 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
44 |
Used Station Count |
40 |
Standard Error |
0.52 (s) |
Azimuthal Gap |
165.79 (degrees) |
Minimum Distance |
0.05 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
4.4 |
|
MLv |
4.4 (± 0.2) |
30 |
ML |
4.6 (± 0.2) |
30 |
M |
4.4 |
30 |
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).