Download Event Information
Origin
PublicID |
2021p339715 |
UTC Time |
2021-05-06T16:41:07Z |
Latitude |
-38.27 (± 5.7
km)
|
Longitude |
176.13 (± 5.0
km)
|
Depth |
141 km (± 10 km) |
Depth Type |
free |
Earth Model |
tab |
Used Phase Count |
50 |
Used Station Count |
46 |
Standard Error |
0.44 (s) |
Azimuthal Gap |
54.70 (degrees) |
Minimum Distance |
0.08 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.3 |
|
ML |
1.4 (± 0.5) |
6 |
MLv |
2.3 (± 0.4) |
32 |
M |
2.3 |
32 |
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).