Download Event Information
Origin
PublicID |
2020p239372 |
UTC Time |
2020-03-29T13:33:58Z |
Latitude |
-26.23 (± 34.9
km)
|
Longitude |
-172.69 (± 14.5
km)
|
Depth |
12 km (± 0 km) |
Depth Type |
operator assigned |
Earth Model |
iasp91 |
Used Phase Count |
12 |
Used Station Count |
11 |
Standard Error |
1.40 (s) |
Azimuthal Gap |
334.16 (degrees) |
Minimum Distance |
5.53 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (mB) |
5.1 (± 0.6) |
|
ML |
5.3 |
1 |
MLv |
5.3 |
1 |
mB |
5.1 (± 0.6) |
3 |
Mw(mB) |
4.5 (± 0.6) |
3 |
M |
5.2 |
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).