Download Event Information
Origin
PublicID |
2019p902247 |
UTC Time |
2019-11-30T19:57:10Z |
Latitude |
-38.04 (± 11.9
km)
|
Longitude |
177.67 (± 9.0
km)
|
Depth |
5 km (± 6 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
60 |
Used Station Count |
60 |
Standard Error |
2.18 (s) |
Azimuthal Gap |
110.05 (degrees) |
Minimum Distance |
0.08 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
3.7 |
|
ML |
3.7 (± 0.4) |
26 |
MLv |
3.7 (± 0.4) |
31 |
mB |
5.1 (± 0.3) |
2 |
Mw(mB) |
4.4 (± 0.4) |
2 |
M |
3.7 |
31 |
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).