Download Event Information
Origin
PublicID |
2021p404697 |
UTC Time |
2021-05-30T17:42:42Z |
Latitude |
-41.24 (± 7.7
km)
|
Longitude |
172.67 (± 8.1
km)
|
Depth |
120 km (± 9 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
17 |
Used Station Count |
10 |
Standard Error |
0.44 (s) |
Azimuthal Gap |
113.52 (degrees) |
Minimum Distance |
0.17 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
1.4 (± 0.8) |
|
MLv |
1.4 (± 0.8) |
3 |
ML |
1.9 (± 0.3) |
6 |
M |
1.4 |
3 |
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).