Magnitude 2.0, Wed May 14 2025 6:28 PM


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Origin


PublicID 2025p360189
UTC Time 2025-05-14T06:28:22Z
Latitude -37.21 (± 19.7 km)
Longitude 176.79 (± 33.8 km)
Depth 253 km (± 19 km)
Depth Type free
Earth Model iasp91
Used Phase Count 8
Used Station Count 6
Standard Error 0.55 (s)
Azimuthal Gap 290.01 (degrees)
Minimum Distance 0.96 (degrees)

Magnitudes


Type Magnitude Station Count
Preferred (MLv) 2.0 (± 0.6)  
MLv 2.0 (± 0.6) 2
ML 3.1 (± 0.7) 2
M 2.0 2

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


-2.0-1.00.01.02.0residual (s)0123Distance (degrees)Pick Residuals

Station Magnitudes (MLv)


0.01.02.03.0Magnitude3Distance (degrees)Station Magnitudes (MLv)

Station Magnitudes (ML)


0.01.02.03.04.0Magnitude23Distance (degrees)Station Magnitudes (ML)

Magnitude Residuals (MLv)


-1.00.01.0Residual3Distance (degrees)Magnitude Residuals (MLv)

Magnitude Residuals (ML)


-1.00.01.0Residual23Distance (degrees)Magnitude Residuals (ML)