Download Event Information
Origin
PublicID |
2016p223944 |
UTC Time |
2016-03-23T20:37:50Z |
Latitude |
-39.25 (± 2.2
km)
|
Longitude |
175.08 (± 2.1
km)
|
Depth |
27 km (± 4 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
79 |
Used Station Count |
49 |
Standard Error |
0.32 (s) |
Azimuthal Gap |
58.52 (degrees) |
Minimum Distance |
0.21 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
3.4 |
|
MLv |
3.4 (± 0.3) |
37 |
ML |
3.7 (± 0.3) |
37 |
M |
3.4 |
37 |
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).