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Origin
PublicID |
2020p502962 |
UTC Time |
2020-07-05T02:16:41Z |
Latitude |
-24.24 (± 7.2
km)
|
Longitude |
-179.90 (± 12.4
km)
|
Depth |
533 km (± 14 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
25 |
Used Station Count |
17 |
Standard Error |
1.93 (s) |
Azimuthal Gap |
192.40 (degrees) |
Minimum Distance |
5.31 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (mB) |
4.8 (± 0.3) |
|
MLv |
5.3 |
1 |
mB |
4.8 (± 0.3) |
8 |
Mw(mB) |
4.0 (± 0.4) |
8 |
M |
4.7 |
8 |
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).