Download Event Information
Origin
PublicID |
2021p471739 |
UTC Time |
2021-06-24T13:02:37Z |
Latitude |
-41.34 (± 6.7
km)
|
Longitude |
174.24 (± 4.3
km)
|
Depth |
51 km (± 9 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
17 |
Used Station Count |
12 |
Standard Error |
0.39 (s) |
Azimuthal Gap |
146.69 (degrees) |
Minimum Distance |
0.13 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
1.5 |
|
MLv |
1.5 (± 0.7) |
3 |
ML |
1.8 (± 0.2) |
9 |
M |
1.5 |
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).