Download Event Information
Origin
PublicID |
2021p179832 |
UTC Time |
2021-03-08T12:53:03Z |
Latitude |
-29.75 (± 0.0
km)
|
Longitude |
-176.93 (± 0.0
km)
|
Depth |
10 km (± 0 km) |
Depth Type |
free |
Earth Model |
|
Used Phase Count |
0 |
Used Station Count |
0 |
Standard Error |
2.93 (s) |
Azimuthal Gap |
0.00 (degrees) |
Minimum Distance |
0.00 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
4.6 |
|
MLv |
4.6 |
1 |
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).