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Origin
PublicID |
2020p372428 |
UTC Time |
2020-05-17T19:07:45Z |
Latitude |
-25.70 (± 4.5
km)
|
Longitude |
-179.61 (± 7.5
km)
|
Depth |
483 km (± 10 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
58 |
Used Station Count |
47 |
Standard Error |
1.67 (s) |
Azimuthal Gap |
165.14 (degrees) |
Minimum Distance |
3.86 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (mB) |
5.2 (± 0.2) |
|
M |
4.9 |
21 |
Mw(mB) |
4.6 (± 0.4) |
21 |
mB |
5.2 (± 0.2) |
21 |
MLv |
6.0 |
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).