Download Event Information
Origin
PublicID |
2016p969705 |
UTC Time |
2016-12-24T18:57:42Z |
Latitude |
-31.16 (± 29.0
km)
|
Longitude |
-178.61 (± 1487.7
km)
|
Depth |
59 km (± 31 km) |
Depth Type |
free |
Earth Model |
iaspei91 |
Used Phase Count |
25 |
Used Station Count |
18 |
Standard Error |
0.96 (s) |
Azimuthal Gap |
181.15 (degrees) |
Minimum Distance |
1.99 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (Mw(mB)) |
4.0 (± 0.4) |
|
MLv |
5.1 (± 0.3) |
8 |
ML |
4.8 (± 0.2) |
13 |
mB |
4.7 (± 0.2) |
4 |
Mw(mB) |
4.0 (± 0.4) |
4 |
M |
4.8 |
8 |
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).