Download Event Information
Origin
PublicID |
2019p685799 |
UTC Time |
2019-09-11T17:51:57Z |
Latitude |
-25.99 (± 7.8
km)
|
Longitude |
179.32 (± 17.2
km)
|
Depth |
688 km (± 22 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
33 |
Used Station Count |
27 |
Standard Error |
8.38 (s) |
Azimuthal Gap |
189.67 (degrees) |
Minimum Distance |
4.07 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (mB) |
5.0 (± 0.2) |
|
MLv |
6.0 |
1 |
mB |
5.0 (± 0.2) |
14 |
Mw(mB) |
4.3 (± 0.4) |
14 |
M |
4.9 |
14 |
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).