Download Event Information
Origin
PublicID |
2018p980177 |
UTC Time |
2018-12-29T15:57:13Z |
Latitude |
-32.17 (± 6.1
km)
|
Longitude |
-179.80 (± 13.7
km)
|
Depth |
280 km (± 22 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
28 |
Used Station Count |
24 |
Standard Error |
0.99 (s) |
Azimuthal Gap |
164.31 (degrees) |
Minimum Distance |
3.32 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
4.6 (± 0.3) |
|
MLv |
4.6 (± 0.3) |
17 |
ML |
4.8 (± 0.7) |
9 |
mB |
4.1 (± 0.3) |
6 |
Mw(mB) |
3.2 (± 0.4) |
6 |
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).