Download Event Information
Origin
PublicID |
2019p531847 |
UTC Time |
2019-07-16T18:48:31Z |
Latitude |
-38.63 (± 4.4
km)
|
Longitude |
175.70 (± 3.8
km)
|
Depth |
135 km (± 6 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
72 |
Used Station Count |
64 |
Standard Error |
0.44 (s) |
Azimuthal Gap |
57.68 (degrees) |
Minimum Distance |
0.17 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.9 |
|
ML |
2.6 (± 0.3) |
19 |
MLv |
2.9 (± 0.4) |
41 |
M |
2.9 |
41 |
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).