Download Event Information
Origin
PublicID |
2019p101954 |
UTC Time |
2019-02-07T17:19:08Z |
Latitude |
-30.08 (± 12.8
km)
|
Longitude |
-178.25 (± 31.4
km)
|
Depth |
300 km (± 8 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
42 |
Used Station Count |
24 |
Standard Error |
1.79 (s) |
Azimuthal Gap |
178.64 (degrees) |
Minimum Distance |
0.86 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (mB) |
4.7 (± 0.1) |
|
MLv |
4.3 (± 0.9) |
3 |
mB |
4.7 (± 0.1) |
7 |
Mw(mB) |
4.0 (± 0.4) |
7 |
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).