MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.1
2025-05-11 22:25:26 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-05-13 08:00:59

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Earthquake info - Manual location
Event - ID :250511222400
Magnitude (ML) :0.1 +/- 0.2
Origin Time :2025-05-11 22:25:26.591 (UTC)
Location : Latitude: 45.816 N, Longitude: 7.426 E
Area :Alpi Pennine
Depth (km) :8.59
Distances (km) : 5.3 --- Oyace
6.6 --- Bionaz
7.9 --- Valpelline
8.2 --- Quart
8.8 --- Nus
9.2 --- Doues
9.2 --- Saint-Christophe
9.3 --- Roisan
9.6 --- Saint-Marcel
9.8 --- Ollomont
9.9 --- Brissogne
10.1 --- Verrayes
10.5 --- Fenis
10.6 --- Gignod
11.2 --- Pollein
11.3 --- Torgnon
12.0 --- Allein
12.2 --- Chambave
12.2 --- Aosta
12.2 --- Saint-Denis

Quality location estimate: Erh: 1.2 km, Erz: 0.8 km, Nf: 12, Gap: 100 °, Rms: 0.16


Manual location results
Station Net P arrival time P pick
err
P pick
weight
P res Nll
weight
S arrival time S pick
err
S pick
weight
S res Nll
weight
Dist.
REMYGU2025-05-11 22:25:32.0460.06020.710.142025-05-11 22:25:34.7500.04000.021.7623.7
CIROGU2025-05-11 22:25:32.3080.0200-0.031.982025-05-11 22:25:35.3650.0400-0.970.0428.4
MRGEIV2025-05-11 22:25:32.4350.08030.031.632025-05-11 22:25:36.2790.0400-0.250.5430.5
DIXCH2025-05-11 22:25:33.2960.02000.550.142025-05-11 22:25:37.0150.0400-0.101.4331.5
LSDGU2025-05-11 22:25:35.0490.0200-0.031.832025-05-11 22:25:40.2840.0400-0.610.3046.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
REMY GUHH-0.091.56e-223.7277
CIRO GUHH0.129.70e-328.4155
MRGE IVHH-0.137.69e-330.5260
DIX CHHH0.584.30e-231.5357
LSD GUHH-0.044.75e-346.9210


Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation
Station Net Channel PGA
(g)
PGV
(m/s)
IH 0*
(m)
IH 1*
(m)
IH 2*
(m)
Sa(T=0.10)
(g)
Sa(T=0.30)
(g)
Sa(T=1.00)
(g)
Sa(T=3.00)
(g)
Dist.
(km)
Azim.
(°)
REMY GUHHZ2.0746e-62.4659e-78.5305e-82.8998e-82.3223e-82.6223e-63.2634e-73.3576e-85.0996e-923.7277
REMY GUHHN3.3190e-63.4283e-71.3986e-75.3241e-83.1730e-87.7039e-63.7438e-74.9761e-88.2871e-923.7277
REMY GUHHE2.9174e-63.5598e-71.0878e-74.4510e-82.3620e-84.9414e-63.9147e-73.8978e-86.3489e-923.7277
CIRO GUHHZ1.2924e-61.6321e-75.3067e-81.8541e-81.3933e-83.7725e-62.1965e-72.0383e-83.6510e-928.4155
CIRO GUHHN3.5134e-63.3834e-76.9990e-82.6031e-81.6615e-84.7306e-63.8990e-72.8714e-86.9773e-928.4155
CIRO GUHHE2.8609e-62.1512e-75.9723e-82.1220e-81.2622e-84.0343e-61.9186e-72.0285e-84.0874e-928.4155
MRGE IVHHZ1.3164e-61.1566e-73.3574e-82.0129e-81.4379e-88.7791e-71.9777e-72.2953e-82.4810e-930.5260
MRGE IVHHN2.5055e-62.0668e-75.0506e-83.0913e-82.8765e-82.0411e-62.3399e-75.0062e-84.4611e-930.5260
MRGE IVHHE1.7879e-61.3879e-73.3583e-82.3551e-81.6278e-81.3518e-61.6082e-72.6575e-82.9591e-930.5260
DIX CHHHZ4.5697e-66.6997e-72.5580e-79.9906e-85.2886e-81.6413e-51.1520e-68.3057e-81.4733e-831.5357
DIX CHHHN6.6308e-66.5526e-72.0451e-76.5725e-83.8851e-85.5764e-68.7241e-76.1056e-81.5114e-831.5357
DIX CHHHE7.3139e-61.0379e-63.1361e-78.0270e-85.5449e-81.0627e-51.2328e-61.0471e-72.3338e-831.5357
LSD GUHHZ1.0706e-61.2576e-73.7327e-81.7492e-81.1712e-81.5591e-61.3624e-71.7949e-82.1721e-946.9210
LSD GUHHN9.9082e-79.2422e-82.7385e-81.3508e-81.0487e-81.2340e-61.4680e-71.1385e-81.7375e-946.9210
LSD GUHHE1.0411e-61.1301e-74.2045e-81.7891e-81.0494e-81.3091e-61.9209e-71.4623e-82.2063e-946.9210
*IH (Housner Intensity) calculated on the velocity spectrum (SV) between 0.1 and 0.5 s (IH0), 0.1 and 1.0 s (IH1), 0.1 and 1.5 s (IH2)

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