Download Event Information
Origin
PublicID |
2019p802175 |
UTC Time |
2019-10-24T19:18:48Z |
Latitude |
-38.77 (± 27.9
km)
|
Longitude |
177.34 (± 12.7
km)
|
Depth |
6 km (± 15 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
32 |
Used Station Count |
32 |
Standard Error |
2.22 (s) |
Azimuthal Gap |
290.68 (degrees) |
Minimum Distance |
0.01 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
4.0 |
|
ML |
4.4 (± 0.4) |
20 |
MLv |
4.0 (± 0.3) |
21 |
M |
4.0 |
21 |
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).