MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.8
2025-05-05 20:51:19 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-05-06 06:49:12

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Earthquake info - Manual location
Event - ID :250505205022
Magnitude (ML) :0.8 +/- 0.2
Origin Time :2025-05-05 20:51:19.349 (UTC)
Location : Latitude: 45.876 N, Longitude: 7.002 E
Area :Alpi Pennine
Depth (km) :5.73
Distances (km) : 9.4 --- Courmayeur
12.4 --- Pre -Saint-Didier
13.3 --- Morgex
14.9 --- Saint-Rhemy-En-Bosses
15.3 --- La Salle
17.2 --- Saint-Oyen
18.0 --- La Thuile
18.6 --- Etroubles
21.3 --- Avise
21.7 --- Saint-Nicolas
22.2 --- Allein
22.9 --- Arvier
24.0 --- Ollomont
24.4 --- Doues
25.0 --- Villeneuve
25.0 --- Introd
25.0 --- Gignod
25.4 --- Saint-Pierre
25.7 --- Valpelline
26.1 --- Roisan

Quality location estimate: Erh: 0.9 km, Erz: 0.5 km, Nf: 24, Gap: 147 °, Rms: 0.39


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.
COURMFR2025-05-05 20:51:21.7000.10040.061.352025-05-05 20:51:22.6740.0400-0.450.999.9
BLANCGU2025-05-05 20:51:21.9450.0200-0.011.662025-05-05 20:51:23.0370.0400-0.661.1111.1
MRGEIV2025-05-05 20:51:22.6500.10040.011.412025-05-05 20:51:24.2830.0400-0.551.2214.6
RSLFR2025-05-05 20:51:26.4450.02000.001.602025-05-05 20:51:30.6140.0400-0.631.1736.3
DIXCH2025-05-05 20:51:27.3320.0200-0.011.552025-05-05 20:51:32.0770.0400-0.760.8539.4
LSDGU2025-05-05 20:51:28.2060.02000.011.522025-05-05 20:51:33.4720.0400-0.750.8848.1
CIROGU2025-05-05 20:51:29.3460.0200-0.380.832025-05-05 20:51:35.2600.0400-1.690.0054.1
SENINCH2025-05-05 20:51:30.8250.02000.111.172025-05-05 20:51:38.0300.0400-0.621.0459.4
EMBDCH2025-05-05 20:51:32.3930.0200-0.521.162025-05-05 20:51:41.4900.0400-0.830.6774.8
MMKCH2025-05-05 20:51:33.4190.02000.330.392025-05-05 20:51:42.2130.0400-0.551.0277.4
LAUCHCH2025-05-05 20:51:36.0670.02001.440.002025-05-05 20:51:45.6950.04000.420.4184.7
SIMPLCH2025-05-05 20:51:35.1970.0200-0.141.012025-05-05 20:51:46.5080.04000.020.9988.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
BLANCGUHH0.835.19e-111.1236
MRGE IVHH0.963.63e-114.6159
DIX CHHH1.027.66e-239.454
LSD GUHH0.501.56e-248.1167
CIRO GUHH0.982.00e-254.1124
SENINCHHH0.822.10e-259.423
EMBD CHHH0.546.79e-374.859
MMK CHHH0.775.76e-377.475
LAUCHCHHH1.081.78e-284.744
SIMPLCHHH0.564.77e-388.762


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.
(°)
COURMFRHHZ3.6809e-44.2425e-51.5816e-53.5042e-61.8211e-67.6165e-47.1604e-53.6183e-68.2881e-79.9206
COURMFRHHN3.7270e-45.4316e-52.5772e-57.7749e-64.7913e-68.3248e-49.7873e-58.0103e-61.4254e-69.9206
COURMFRHHE5.1309e-49.0205e-53.2857e-57.7965e-64.2619e-61.4665e-31.4651e-47.7159e-61.8621e-69.9206
BLANCGUHHZ2.7474e-54.1418e-62.1659e-66.6457e-73.0121e-77.8308e-59.8394e-64.7790e-78.2545e-811.1236
BLANCGUHHN5.2134e-55.5315e-62.7233e-61.4881e-67.9439e-77.6025e-51.0800e-51.1607e-61.4752e-711.1236
BLANCGUHHE4.3970e-58.8058e-64.0365e-61.2503e-65.1876e-71.3274e-42.1734e-59.2075e-71.9949e-711.1236
MRGE IVHHZ3.9826e-53.6261e-68.8290e-72.6676e-71.3143e-73.1359e-53.5542e-62.9086e-76.7583e-814.6159
MRGE IVHHN8.6024e-58.4329e-61.6001e-66.7860e-73.8808e-78.4351e-57.6561e-67.5708e-71.7286e-714.6159
MRGE IVHHE1.1844e-49.0002e-62.0073e-68.6880e-75.4958e-76.2339e-51.0161e-59.0230e-71.6512e-714.6159
DIX CHHHZ7.9161e-61.3689e-69.8578e-73.0971e-71.3623e-71.4484e-55.8616e-62.2316e-74.0833e-839.454
DIX CHHHN1.0185e-51.2920e-67.6530e-72.7138e-71.1882e-72.6879e-53.2513e-61.6984e-73.0707e-839.454
DIX CHHHE1.2212e-51.5965e-68.0991e-72.5479e-71.0245e-72.4746e-53.8307e-61.6085e-73.7921e-839.454
LSD GUHHZ2.5200e-62.6890e-79.6200e-83.5785e-81.6297e-83.3834e-64.2048e-72.4372e-85.3052e-948.1167
LSD GUHHN3.4365e-63.2927e-78.6388e-82.9531e-81.6923e-83.4800e-63.3833e-73.0972e-85.8794e-948.1167
LSD GUHHE3.5294e-63.4189e-71.2567e-73.8364e-81.9068e-84.3473e-65.9426e-73.0025e-85.8877e-948.1167
CIRO GUHHZ1.5517e-62.3465e-71.0150e-73.3189e-81.5070e-83.1894e-65.4261e-72.3968e-85.3387e-954.1124
CIRO GUHHN2.6981e-63.3402e-71.8527e-76.8506e-82.9870e-84.2985e-69.5130e-74.2312e-88.2933e-954.1124
CIRO GUHHE2.4333e-62.3786e-79.3484e-83.5229e-81.8903e-82.3405e-66.6844e-72.5958e-84.1674e-954.1124
SENINCHHHZ3.3552e-65.5407e-73.9016e-71.2622e-77.4551e-81.1697e-52.3538e-61.0608e-71.5594e-859.423
SENINCHHHN2.0172e-63.4217e-72.0904e-76.2073e-82.8198e-85.3766e-61.6235e-64.2053e-87.4999e-959.423
SENINCHHHE2.5589e-63.6173e-72.1250e-76.9065e-83.4803e-87.3765e-61.2283e-64.5428e-89.1277e-959.423
EMBD CHHHZ4.2751e-78.8118e-87.2813e-84.4646e-81.4524e-81.2365e-63.0496e-71.9445e-82.6633e-974.859
EMBD CHHHN4.7402e-78.2272e-85.6148e-83.0651e-81.2826e-81.0451e-62.7096e-71.9012e-82.4503e-974.859
EMBD CHHHE4.9441e-75.5447e-84.2121e-82.1412e-87.9421e-91.2440e-61.8236e-71.0390e-81.3488e-974.859
MMK CHHHZ5.2516e-77.8406e-83.3954e-81.3874e-88.2915e-91.5009e-61.1865e-71.0601e-82.0495e-977.475
MMK CHHHN5.4228e-78.0442e-84.7730e-81.6832e-81.9648e-81.6793e-62.0610e-73.7052e-86.7806e-977.475
MMK CHHHE6.7190e-77.1587e-82.6390e-88.6057e-95.0548e-91.0086e-61.4086e-77.6701e-91.4600e-977.475
LAUCHCHHHZ4.2393e-77.1017e-86.1628e-82.2362e-81.2062e-81.8056e-62.5049e-71.8889e-82.3779e-984.744
LAUCHCHHHN6.7707e-71.4362e-79.7981e-82.9773e-81.8794e-83.1523e-64.6586e-73.1771e-84.1292e-984.744
LAUCHCHHHE1.0287e-62.2702e-71.7509e-75.1328e-82.5518e-84.0466e-64.9624e-73.2808e-85.7942e-984.744
SIMPLCHHHZ3.0086e-76.5251e-84.8077e-81.9498e-89.0232e-98.7771e-71.8737e-71.2342e-81.8049e-988.762
SIMPLCHHHN4.0784e-76.9507e-84.4063e-81.5722e-88.7192e-99.0381e-72.2326e-71.0675e-81.7319e-988.762
SIMPLCHHHE2.9466e-74.9838e-83.4749e-81.5885e-88.2360e-99.0105e-71.3890e-71.1645e-81.5189e-988.762
*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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