Download Event Information
Origin
PublicID |
2021p173004 |
UTC Time |
2021-03-06T00:16:20Z |
Latitude |
-37.47 (± 6.3
km)
|
Longitude |
179.94 (± 6.7
km)
|
Depth |
33 km (± 0 km) |
Depth Type |
operator assigned |
Earth Model |
iasp91 |
Used Phase Count |
38 |
Used Station Count |
24 |
Standard Error |
0.45 (s) |
Azimuthal Gap |
291.12 (degrees) |
Minimum Distance |
1.26 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (Mw(mB)) |
6.2 (± 0.4) |
|
Mw(mB) |
6.2 (± 0.4) |
23 |
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).