Download Event Information
Origin
PublicID |
2016p724045 |
UTC Time |
2016-09-24T21:28:43Z |
Latitude |
-20.27 (± 8.1
km)
|
Longitude |
-177.10 (± 63.9
km)
|
Depth |
647 km (± 21 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
102 |
Used Station Count |
87 |
Standard Error |
1.43 (s) |
Azimuthal Gap |
345.34 (degrees) |
Minimum Distance |
8.96 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
6.2 |
|
mB |
6.4 (± 0.1) |
67 |
Mw(mB) |
6.2 (± 0.4) |
67 |
M |
6.2 |
67 |
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).