Download Event Information
Origin
PublicID |
2018p681596 |
UTC Time |
2018-09-10T04:33:08Z |
Latitude |
-32.33 (± 5.7
km)
|
Longitude |
-177.99 (± 14.2
km)
|
Depth |
126 km (± 20 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
96 |
Used Station Count |
71 |
Standard Error |
1.50 (s) |
Azimuthal Gap |
203.75 (degrees) |
Minimum Distance |
3.06 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
5.1 |
|
MLv |
5.5 (± 0.2) |
38 |
ML |
5.8 (± 0.3) |
50 |
mB |
5.5 (± 0.2) |
25 |
Mw(mB) |
5.0 (± 0.4) |
25 |
M |
5.1 |
38 |
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).