MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.8
2025-08-01 08:19:41 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-01 08:45:23

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Earthquake info - Manual location
Event - ID :250801081916
Magnitude (ML) :0.8 +/- 0.2
Origin Time :2025-08-01 08:19:41.758 (UTC)
Location : Latitude: 45.957 N, Longitude: 7.845 E
Area :Alpi Pennine
Depth (km) :6.48
Distances (km) : 9.7 --- Macugnaga
13.5 --- Alagna Valsesia
14.2 --- Gressoney-la-Trinite
14.3 --- Rima San Giuseppe
16.2 --- Riva Valdobbia
16.7 --- Carcoforo
17.4 --- Ceppo Morelli
19.2 --- Valtournenche
19.7 --- Gressoney-Saint-Jean
20.0 --- Ayas
20.0 --- Rimasco
20.5 --- Vanzone con San Carlo
21.3 --- Mollia
21.6 --- Chamois
22.7 --- Campertogno
23.5 --- Bannio Anzino
23.7 --- Brusson
23.9 --- Antrona Schieranco
23.9 --- La Magdeleine
24.6 --- Rassa

Quality location estimate: Erh: 1.1 km, Erz: 0.4 km, Nf: 28, Gap: 72 °, Rms: 0.26


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.
SATIGU2025-08-01 08:19:45.1100.00700.450.642025-08-01 08:19:46.2500.0400-0.410.6713.3
MMKCH2025-08-01 08:19:45.1750.00800.051.732025-08-01 08:19:46.7590.1002-0.640.5116.5
VANNICH2025-08-01 08:19:48.7800.01900.530.572025-08-01 08:19:52.5450.1143-0.111.4234.9
DIXCH2025-08-01 08:19:49.0020.02000.011.912025-08-01 08:19:53.3800.1243-0.510.7037.7
OROIV2025-08-01 08:19:49.3460.0200-0.071.722025-08-01 08:19:53.9400.1143-0.450.7739.0
CIROGU2025-08-01 08:19:50.7000.02410.151.002025-08-01 08:19:56.5310.2717-0.011.1745.8
REMYGU2025-08-01 08:19:51.8940.0200-0.021.762025-08-01 08:19:58.9500.1785-0.261.1055.6
FIESACH2025-08-01 08:19:52.0910.0200-0.081.612025-08-01 08:19:58.5400.1002-0.920.2357.6
CANIGU2025-08-01 08:19:53.4340.02001.090.122025-08-01 08:20:00.6350.04001.090.1459.6
SENINCH2025-08-01 08:19:52.9050.0200-0.071.642025-08-01 08:20:01.1270.04000.400.6962.2
MRGEIV2025-08-01 08:19:53.6350.02000.360.612025-08-01 08:20:01.3380.0400-0.231.1664.6
LSDGU2025-08-01 08:19:56.0200.06930.570.482025-08-01 08:20:04.6600.4719-0.200.9078.6
MUGIOCH2025-08-01 08:19:57.6460.0200-0.580.622025-08-01 08:20:08.6400.2717-1.210.1692.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
SATI GUHH0.872.36e-113.3168
MMK CHHH0.557.14e-216.541
VANNICHHH0.623.90e-234.9326
DIX CHHH0.977.42e-237.7292
ORO IVEH1.088.98e-239.0164
CIRO GUHH0.862.11e-245.8209
REMY GUHH0.953.27e-255.6256
FIESACHHH0.621.43e-257.621
CANI GUHH0.862.30e-259.6192
SENINCHHH0.671.36e-262.2317
MRGE IVHH0.701.14e-264.6251
LSD GUHH0.718.96e-378.6225
MUGIOCHHH1.167.96e-392.992


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.
(°)
SATI GUHHZ4.2854e-54.0287e-66.0788e-72.5121e-71.1304e-73.7821e-52.2181e-62.6613e-76.4558e-813.3168
SATI GUHHN5.2977e-54.8688e-68.5221e-73.0932e-71.7430e-74.5932e-53.4517e-63.2546e-79.6588e-813.3168
SATI GUHHE8.4244e-57.2099e-61.2713e-64.5550e-72.7946e-75.1088e-55.2470e-66.1363e-71.2909e-713.3168
MMK CHHHZ1.9201e-51.8509e-64.3860e-71.6230e-78.3895e-81.2801e-51.8465e-61.5324e-72.7639e-816.541
MMK CHHHN3.6884e-52.4045e-65.1951e-71.4439e-77.5830e-83.4422e-52.6670e-61.4985e-74.5174e-816.541
MMK CHHHE3.5694e-52.8587e-64.6954e-72.0707e-71.0188e-72.0402e-51.6587e-62.4780e-76.2307e-816.541
VANNICHHHZ3.1926e-64.1831e-72.7907e-77.6186e-83.7893e-85.1937e-62.3007e-65.7748e-89.8745e-934.9326
VANNICHHHN5.7654e-66.3685e-72.9635e-71.0415e-75.2133e-86.8602e-62.4352e-68.9053e-81.5443e-834.9326
VANNICHHHE3.9373e-64.5678e-73.2035e-71.1194e-75.5463e-83.8082e-62.0589e-68.4816e-81.2343e-834.9326
DIX CHHHZ1.5895e-51.3729e-64.7123e-71.5093e-76.7966e-82.1906e-51.8560e-61.0862e-72.8614e-837.7292
DIX CHHHN1.6813e-51.5562e-66.7511e-71.8958e-71.0272e-72.8560e-53.6957e-61.8866e-73.7166e-837.7292
DIX CHHHE1.3851e-51.6591e-65.2575e-72.0566e-78.8670e-81.9985e-53.0242e-61.3782e-73.2929e-837.7292
ORO IVEHZ9.8333e-61.4394e-65.3558e-71.5768e-78.6048e-81.3585e-53.5839e-61.5060e-73.0650e-839.0164
ORO IVEHN1.1188e-51.3459e-67.2483e-71.8390e-71.0344e-71.9390e-53.4053e-61.7413e-73.1410e-839.0164
ORO IVEHE1.0549e-51.0521e-65.0363e-71.3241e-76.2355e-81.1299e-52.6259e-69.9542e-82.2114e-839.0164
CIRO GUHHZ5.1095e-65.3398e-71.3294e-74.0960e-82.1693e-88.8606e-64.1660e-73.8999e-81.0002e-845.8209
CIRO GUHHN7.3491e-67.1701e-71.1736e-74.3341e-82.2837e-87.5194e-64.7407e-74.9077e-81.4538e-845.8209
CIRO GUHHE5.6802e-65.1123e-78.4741e-83.4732e-82.6578e-85.0403e-63.7936e-74.6926e-89.6497e-945.8209
REMY GUHHZ2.9315e-63.1597e-71.4963e-73.8998e-82.1574e-85.2125e-69.0911e-73.8758e-86.6354e-955.6256
REMY GUHHN4.2714e-65.7749e-73.0164e-77.5402e-84.4938e-81.2004e-59.9113e-78.0228e-81.5086e-855.6256
REMY GUHHE3.6668e-64.6049e-72.5428e-76.5330e-84.5428e-81.2393e-59.9626e-76.1023e-81.1691e-855.6256
FIESACHHHZ1.9659e-62.1118e-71.3321e-76.1244e-83.0859e-84.7988e-64.8297e-74.8718e-85.3836e-957.621
FIESACHHHN1.9382e-62.1887e-71.3751e-76.6383e-82.9690e-84.9059e-66.6403e-73.7430e-85.7296e-957.621
FIESACHHHE2.2111e-62.7316e-71.7640e-75.9873e-83.5363e-86.8534e-61.0122e-64.1646e-86.6217e-957.621
CANI GUHHZ6.0516e-65.5257e-71.2775e-73.4840e-81.8506e-88.7708e-65.1170e-74.3031e-81.1026e-859.6192
CANI GUHHN5.0096e-64.3251e-71.3364e-73.6949e-81.8164e-85.5739e-66.2233e-73.8696e-88.7855e-959.6192
CANI GUHHE5.2951e-65.4790e-71.9269e-75.0992e-82.7145e-87.6512e-61.0891e-64.4212e-89.8788e-959.6192
SENINCHHHZ1.0934e-61.9639e-71.1948e-73.5094e-81.8837e-83.7456e-67.1701e-72.6751e-85.8164e-962.2317
SENINCHHHN1.1856e-61.5646e-79.8153e-84.4919e-82.7485e-82.3305e-66.3423e-73.7843e-84.3306e-962.2317
SENINCHHHE1.2625e-62.3027e-79.4272e-85.2750e-83.2887e-82.9091e-63.5762e-75.1805e-85.9923e-962.2317
MRGE IVHHZ2.5520e-62.7938e-76.6909e-83.0898e-81.2233e-82.0602e-64.5480e-72.1013e-84.9196e-964.6251
MRGE IVHHN3.4140e-63.4847e-79.1548e-83.7465e-81.8652e-85.2047e-63.8075e-73.4113e-86.4278e-964.6251
MRGE IVHHE3.1899e-62.7106e-77.3219e-84.0145e-82.0145e-82.5080e-64.8402e-72.6467e-85.3433e-964.6251
LSD GUHHZ1.5859e-61.4547e-77.3809e-84.1135e-82.8349e-83.0657e-63.4709e-73.4798e-83.2896e-978.6225
LSD GUHHN2.4335e-62.2663e-76.0870e-82.7045e-81.4792e-82.6652e-62.3213e-72.0474e-84.0150e-978.6225
LSD GUHHE2.3755e-62.2391e-76.5515e-82.9074e-81.3130e-82.9377e-62.9693e-71.8886e-84.2587e-978.6225
MUGIOCHHHZ1.0411e-61.1975e-75.7740e-82.0349e-89.3398e-92.3733e-62.0895e-71.4457e-82.9732e-992.992
MUGIOCHHHN1.8745e-62.2462e-76.5818e-82.3747e-81.3693e-82.9411e-63.9067e-72.1205e-84.2523e-992.992
MUGIOCHHHE1.1246e-61.2497e-74.8143e-81.8785e-89.1095e-92.4176e-61.5869e-71.4093e-82.6809e-992.992
*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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