Magnitude 0.0, Fri Jun 11 2021 7:24 PM


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Origin


PublicID 2021p435975
UTC Time 2021-06-11T07:24:39Z
Latitude -23.33 (± 36.2 km)
Longitude -179.52 (± 145.3 km)
Depth 492 km (± 60 km)
Depth Type free
Earth Model iasp91
Used Phase Count 9
Used Station Count 9
Standard Error 1.22 (s)
Azimuthal Gap 349.01 (degrees)
Minimum Distance 14.56 (degrees)

Magnitudes


Type Magnitude Station Count
Preferred () 0.0  

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).

Origin Map


Map of New Zealand.

Map showing stations with picks used to locate the earthquake. Stations with picks that have a zero weight in the solution are shown as small grey circles. Those with a higher weight are shown as larger circles. The quake is shown by the largest circle.

Pick Residuals


-13.0-11.0-9.0-7.0-5.0-3.0-1.01.03.05.07.09.011.013.0residual (s)024681012141618202224Distance (degrees)Pick Residuals