Magnitude 1.4, Wed Mar 5 2025 9:48 PM


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Origin


PublicID 2025p171261
UTC Time 2025-03-05T08:48:13Z
Latitude -38.44 (± 3.2 km)
Longitude 176.20 (± 4.4 km)
Depth 5 km (± 4 km)
Depth Type free
Earth Model iasp91
Used Phase Count 12
Used Station Count 9
Standard Error 0.10 (s)
Azimuthal Gap 123.10 (degrees)
Minimum Distance 0.09 (degrees)

Magnitudes


Type Magnitude Station Count
Preferred (MLv) 1.4 (± 0.1)  
MLv 1.4 (± 0.1) 8
ML 1.5 (± 0.4) 7
M 1.4 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).

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


-43.0-41.0-39.0-37.0-35.0-33.0-31.0-29.0-27.0-25.0-23.0-21.0-19.0-17.0-15.0-13.0-11.0-9.0-7.0-5.0-3.0-1.01.03.05.07.09.011.013.015.017.019.021.023.025.027.029.031.033.035.037.039.041.043.0residual (s)0Distance (degrees)Pick Residuals

Station Magnitudes (MLv)


0.01.02.0MagnitudeDistance (degrees)Station Magnitudes (MLv)

Station Magnitudes (ML)


0.01.02.03.0MagnitudeDistance (degrees)Station Magnitudes (ML)

Magnitude Residuals (MLv)


-1.00.01.0ResidualDistance (degrees)Magnitude Residuals (MLv)

Magnitude Residuals (ML)


-1.00.01.0ResidualDistance (degrees)Magnitude Residuals (ML)