Download Event Information
Origin
PublicID |
2019p215424 |
UTC Time |
2019-03-21T16:57:58Z |
Latitude |
-35.41 (± 18.3
km)
|
Longitude |
179.36 (± 22.4
km)
|
Depth |
175 km (± 25 km) |
Depth Type |
free |
Earth Model |
tab |
Used Phase Count |
35 |
Used Station Count |
20 |
Standard Error |
1.01 (s) |
Azimuthal Gap |
342.73 (degrees) |
Minimum Distance |
2.31 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
3.5 (± 0.1) |
|
MLv |
3.5 (± 0.1) |
13 |
ML |
3.7 (± 0.2) |
15 |
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).