MANUAL Location - Area: Alpi Marittime , magnitude (ML): 1.5
2025-03-31 03:01:08 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-03-31 07:35:52

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Earthquake info - Manual location
Event - ID :250331025926
Magnitude (ML) :1.5 +/- 0.2
Origin Time :2025-03-31 03:01:08.76 (UTC)
Location : Latitude: 44.306 N, Longitude: 7.277 E
Area :Alpi Marittime
Depth (km) :4.46
Distances (km) : 1.9 --- Demonte
4.7 --- Aisone
8.2 --- Vinadio
8.5 --- Valloriate
9.1 --- Moiola
10.0 --- Valdieri
10.8 --- Gaiola
10.9 --- Rittana
12.0 --- Entracque
12.1 --- Monterosso Grana
12.7 --- Pradleves
12.7 --- Castelmagno
13.5 --- Roccasparvera
14.4 --- Valgrana
14.7 --- Roaschia
15.4 --- Bernezzo
16.2 --- Roccavione
16.5 --- Sambuco
16.5 --- Vignolo
16.6 --- Montemale di Cuneo

Quality location estimate: Erh: 0.6 km, Erz: 0.7 km, Nf: 60, Gap: 41 °, Rms: 0.34


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.
VINDIV2025-03-31 03:01:11.2500.02000.341.272025-03-31 03:01:12.3080.0400-0.081.219.3
STVGU2025-03-31 03:01:11.2300.00500.431.322025-03-31 03:01:12.1800.0290-0.021.359.5
ENRGU2025-03-31 03:01:12.3300.00700.471.242025-03-31 03:01:14.1400.04610.161.2515.2
ISOFR2025-03-31 03:01:14.1200.01200.800.362025-03-31 03:01:16.5200.06810.151.3023.2
PZZGU2025-03-31 03:01:14.3300.01800.011.372025-03-31 03:01:18.1310.1283-0.101.0926.4
TURFFR2025-03-31 03:01:16.8100.01900.550.932025-03-31 03:01:21.4300.1143-0.180.9238.2
SURFFR2025-03-31 03:01:16.8700.02110.031.362025-03-31 03:01:22.8600.12630.291.2941.9
SAOFFR2025-03-31 03:01:17.4500.02110.481.172025-03-31 03:01:22.6190.1263-0.101.0642.1
GBOSGU2025-03-31 03:01:17.5600.02210.361.322025-03-31 03:01:23.1200.13840.241.3045.7
MVIFFR2025-03-31 03:01:18.2440.02000.411.302025-03-31 03:01:23.9650.1394-0.450.4346.8
MLIGIV2025-03-31 03:01:17.9410.0200-0.160.952025-03-31 03:01:23.6620.0400-0.990.0848.1
MGROGU2025-03-31 03:01:18.5800.0261-0.101.132025-03-31 03:01:25.3460.2727-0.290.7351.8
ESCAFR2025-03-31 03:01:19.4800.02710.580.882025-03-31 03:01:25.8730.2376-0.130.9553.6
BRDIT2025-03-31 03:01:19.5030.02000.041.342025-03-31 03:01:27.0030.04000.161.3157.9
BHBGU2025-03-31 03:01:19.6000.02910.451.222025-03-31 03:01:26.6250.26670.361.0959.0
BIGNGU2025-03-31 03:01:20.2020.02000.221.302025-03-31 03:01:27.9030.10020.191.2961.0
BURYGU2025-03-31 03:01:20.5000.03110.051.332025-03-31 03:01:27.8510.3287-0.690.3262.5
IMIGU2025-03-31 03:01:21.0200.03310.331.302025-03-31 03:01:28.9600.1985-0.071.0366.2
ROROGU2025-03-31 03:01:21.1000.03310.281.312025-03-31 03:01:29.5000.20160.431.0766.6
SNRMIT2025-03-31 03:01:21.5220.10040.670.682025-03-31 03:01:29.3200.04000.131.2867.5
CANOGU2025-03-31 03:01:22.8700.1296-0.140.992025-03-31 03:01:32.3190.2336-0.380.6177.4
RRLGU2025-03-31 03:01:23.0900.03910.101.322025-03-31 03:01:32.5100.4319-0.520.5178.7
OGAGFR2025-03-31 03:01:23.6500.04010.580.902025-03-31 03:01:33.8200.29570.620.7879.5
QLNOIV2025-03-31 03:01:24.3300.04220.251.322025-03-31 03:01:34.7370.46890.070.8885.2
OGDIFR2025-03-31 03:01:25.3360.02000.451.162025-03-31 03:01:36.7080.04000.321.1786.8
RSPGU2025-03-31 03:01:24.4030.0200-0.330.582025-03-31 03:01:35.1800.2847-0.700.3293.8
MONCIV2025-03-31 03:01:27.8000.04920.890.342025-03-31 03:01:40.4980.16040.081.0899.7
PCPGU2025-03-31 03:01:27.6300.05120.720.612025-03-31 03:01:40.3500.04000.740.63104.1
ROTMGU2025-03-31 03:01:28.6000.05620.860.382025-03-31 03:01:41.5400.3257-0.000.92104.5
OGMOFR2025-03-31 03:01:28.4300.02000.111.292025-03-31 03:01:41.7770.0400-0.250.78110.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
STV GUHH1.391.69e+09.5150
ENR GUHH1.823.94e+015.2127
TURF FRHH1.048.60e-238.2166
SAOF FRHH1.179.49e-242.1148
GBOS GUHH1.841.96e-145.799
MGRO GUHH1.481.29e-151.8125
ESCA FRHH1.561.43e-153.6172
BHB GUHH1.376.88e-259.0359
BIGN GUEH1.551.07e-161.0143
IMI GUHH1.922.83e-166.2132
RORO GUHH1.631.07e-166.6109
CANO GUHH1.891.42e-177.498
RRL GUHH1.382.85e-278.7331
OGAG FRHH1.242.94e-279.5313
QLNO IVHH1.575.45e-285.288
MONC IVHH1.697.34e-299.731
PCP GUHH1.503.15e-2104.175
ROTM GUHH1.741.88e-1104.554


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.
(°)
STV GUHHZ4.4532e-44.2858e-51.2719e-54.0412e-62.7878e-63.2990e-45.3028e-54.2773e-68.2102e-79.5150
STV GUHHN2.6049e-43.0363e-56.7879e-62.4387e-61.4956e-64.3132e-42.9877e-52.7752e-66.4347e-79.5150
STV GUHHE3.3020e-44.1484e-51.1611e-54.0667e-62.7744e-64.6015e-44.9755e-54.8820e-69.6381e-79.5150
ENR GUHHZ5.0108e-44.5516e-58.1409e-62.8268e-61.5704e-64.4467e-42.7801e-53.3161e-68.7906e-715.2127
ENR GUHHN1.4191e-31.2945e-41.5208e-55.8382e-63.1477e-68.9331e-47.6037e-58.4449e-62.1879e-615.2127
ENR GUHHE1.9069e-31.5602e-42.1493e-57.2785e-64.8834e-69.5891e-48.6131e-51.0953e-52.7732e-615.2127
ISO FRHHZ1.7390e-52.6714e-61.5827e-65.5323e-73.0052e-72.6131e-58.8199e-64.6861e-76.5945e-823.2233
ISO FRHHN1.8475e-52.3751e-61.0294e-63.6709e-72.1957e-73.4076e-56.0729e-63.5798e-75.9456e-823.2233
ISO FRHHE2.1835e-52.7973e-61.2750e-64.2706e-72.1186e-73.5930e-57.0308e-62.9933e-75.7786e-823.2233
PZZ GUHHZ5.0289e-56.3712e-62.9207e-61.0643e-66.8170e-78.2462e-51.1567e-59.5432e-71.3425e-726.4330
PZZ GUHHN5.5280e-57.5929e-62.8029e-61.0944e-64.6211e-71.2307e-49.5076e-67.5536e-71.5837e-726.4330
PZZ GUHHE4.1275e-55.0759e-62.9051e-67.6798e-74.6369e-76.0616e-51.4849e-57.7187e-71.3723e-726.4330
TURF FRHHZ7.7582e-67.8086e-74.4568e-71.5232e-76.4122e-81.3619e-52.4044e-61.1179e-71.8560e-838.2166
TURF FRHHN1.0898e-51.8882e-66.6647e-72.0668e-71.3463e-73.4596e-52.0475e-62.3120e-74.5266e-838.2166
TURF FRHHE8.7527e-61.5575e-67.4101e-72.1631e-71.0553e-73.0554e-52.8392e-61.7495e-73.2380e-838.2166
SAOF FRHHZ4.0962e-68.2369e-76.3207e-72.8574e-71.3053e-71.4160e-53.3916e-61.6657e-72.0870e-842.1148
SAOF FRHHN4.7115e-67.0834e-75.6460e-72.3598e-71.1689e-71.1455e-52.6256e-61.5905e-71.7378e-842.1148
SAOF FRHHE7.4658e-61.2013e-67.4675e-73.2400e-71.7877e-72.0800e-53.7850e-62.5522e-73.0552e-842.1148
GBOS GUHHZ1.5196e-52.8331e-61.2401e-63.2728e-71.8401e-74.2595e-55.9950e-63.0752e-75.5757e-845.799
GBOS GUHHN1.6375e-52.6622e-61.5472e-64.6700e-72.6484e-74.2459e-57.9810e-63.9365e-75.9460e-845.799
GBOS GUHHE1.3896e-52.3316e-61.4214e-64.4853e-72.1499e-73.8617e-56.0049e-62.9642e-74.5836e-845.799
MGRO GUHHZ6.0175e-68.7562e-76.6744e-74.0935e-71.5861e-79.2297e-62.9344e-62.0728e-72.1090e-851.8125
MGRO GUHHN7.4645e-61.3628e-61.2461e-65.4091e-71.7322e-71.7264e-57.2757e-62.4030e-73.7488e-851.8125
MGRO GUHHE9.5280e-61.6999e-69.7975e-73.6906e-71.7404e-71.9643e-57.0332e-62.4772e-73.4681e-851.8125
ESCA FRHHZ3.7766e-68.7571e-76.1501e-71.5877e-79.3001e-87.8586e-63.7695e-61.3909e-72.0917e-853.6172
ESCA FRHHN4.8107e-69.7984e-76.2721e-71.6795e-78.4466e-81.6421e-52.4023e-61.2161e-72.0177e-853.6172
ESCA FRHHE8.5148e-61.6708e-61.1856e-63.1355e-71.8539e-71.9550e-57.0983e-62.8508e-74.6946e-853.6172
BRD ITHNZ9.4177e-61.9724e-61.7976e-65.8183e-72.9629e-71.7398e-51.2123e-54.1631e-75.8835e-857.9141
BRD ITHNN1.8887e-55.6824e-63.7420e-61.5344e-66.3703e-74.9941e-52.1440e-58.8057e-71.5306e-757.9141
BRD ITHNE9.8409e-62.2316e-62.0390e-66.9616e-72.9076e-73.9716e-51.2218e-54.2539e-75.8142e-857.9141
BHB GUHHZ1.1202e-51.3363e-67.3934e-71.9174e-71.0895e-73.3720e-53.0141e-61.6697e-73.0950e-859.0359
BHB GUHHN1.0578e-51.3110e-67.1692e-71.7993e-78.9555e-82.7154e-53.1676e-61.3877e-72.7731e-859.0359
BHB GUHHE1.1202e-51.6878e-66.5647e-71.7522e-78.7527e-82.5592e-52.7990e-61.4425e-73.1842e-859.0359
BIGN GUEHZ6.5654e-67.5175e-73.7073e-71.2551e-75.5772e-81.1217e-51.5666e-68.3838e-81.4310e-861.0143
BIGN GUEHN2.3467e-52.1741e-69.4135e-72.6612e-71.5338e-72.6625e-52.9504e-62.6772e-75.4580e-861.0143
BIGN GUEHE1.7145e-51.9656e-68.3497e-71.9552e-71.0104e-73.4634e-52.3271e-61.7363e-74.2833e-861.0143
BURY GUHHZ5.0639e-66.7096e-73.6236e-71.2947e-76.8304e-89.6072e-61.8018e-67.3902e-81.1951e-862.5159
BURY GUHHN5.0582e-66.8531e-74.2144e-71.8189e-78.8290e-81.5287e-52.1978e-61.1927e-71.7027e-862.5159
BURY GUHHE6.9550e-68.6103e-74.5851e-71.6651e-77.5330e-81.9265e-52.3546e-69.9543e-82.0164e-862.5159
IMI GUHHZ7.3568e-61.9734e-61.1620e-64.8390e-72.0369e-72.2369e-57.1946e-62.7502e-74.3871e-866.2132
IMI GUHHN1.8423e-53.2742e-62.5441e-61.0180e-63.9563e-75.8221e-51.3936e-55.6189e-78.2090e-866.2132
IMI GUHHE1.4761e-52.4760e-61.3982e-63.5468e-71.6136e-73.2583e-58.6721e-62.5066e-75.3403e-866.2132
RORO GUHHZ9.9520e-61.3961e-66.9678e-72.1844e-71.0584e-72.2813e-53.2351e-61.5508e-72.9287e-866.6109
RORO GUHHN1.0241e-51.8145e-61.0212e-63.0914e-71.3367e-73.8582e-54.3123e-62.0244e-74.0064e-866.6109
RORO GUHHE8.1696e-61.3140e-66.1227e-72.2860e-79.7019e-82.4666e-52.6847e-61.5216e-72.7538e-866.6109
SNRM ITHNZ9.8421e-61.7900e-61.1842e-64.1522e-71.6328e-73.3218e-54.8647e-62.5281e-74.7443e-867.5143
SNRM ITHNN2.0121e-53.9767e-62.4320e-68.7538e-74.2599e-76.3614e-59.3525e-65.9846e-79.3345e-867.5143
SNRM ITHNE1.5472e-53.9789e-62.2321e-68.1894e-73.6553e-75.6472e-58.9200e-65.6164e-79.2023e-867.5143
CANO GUHHZ1.1645e-51.7707e-65.9544e-71.6695e-78.0007e-81.9803e-52.6591e-61.2436e-72.6589e-877.498
CANO GUHHN1.0616e-51.7735e-61.2599e-63.6726e-71.8038e-73.6378e-51.0668e-52.6618e-75.0369e-877.498
CANO GUHHE1.0267e-52.0434e-61.0295e-63.0838e-71.3944e-73.4610e-54.0745e-62.3228e-74.1403e-877.498
RRL GUHHZ2.4267e-63.1972e-71.9113e-79.0896e-84.3941e-85.5702e-61.1480e-66.1618e-86.9941e-978.7331
RRL GUHHN3.3149e-64.2964e-73.0345e-71.1381e-74.5099e-89.8129e-61.2860e-66.5307e-81.1041e-878.7331
RRL GUHHE2.2474e-63.6623e-72.7103e-71.1036e-75.2241e-89.0178e-69.7781e-75.9123e-89.0066e-978.7331
OGAG FRHHZ1.1451e-62.6775e-72.6728e-79.8886e-84.5833e-85.2419e-61.4555e-66.5855e-87.7409e-979.5313
OGAG FRHHN1.0097e-62.6427e-72.1971e-78.2403e-84.1053e-83.2946e-61.0006e-65.6796e-86.8246e-979.5313
OGAG FRHHE1.3123e-63.1360e-73.3082e-71.6252e-76.4192e-82.3840e-61.7775e-67.7169e-88.7837e-979.5313
QLNO IVHHZ7.3786e-61.0939e-64.4028e-71.1932e-76.2439e-81.2816e-52.4846e-61.0143e-72.3792e-885.288
QLNO IVHHN8.6034e-61.0706e-64.9048e-71.6694e-78.5478e-81.5629e-52.0366e-61.3285e-72.5722e-885.288
QLNO IVHHE8.9307e-61.1166e-64.8544e-71.5371e-76.2168e-81.3054e-52.0577e-69.4006e-82.0911e-885.288
RSP GUHHZ8.8448e-71.1868e-76.1674e-82.0461e-89.5233e-92.1662e-62.9589e-71.4768e-82.8390e-993.8359
RSP GUHHN1.0880e-61.6902e-71.0260e-72.9792e-81.3786e-83.1954e-63.6353e-71.8689e-83.6303e-993.8359
RSP GUHHE1.1786e-61.5644e-79.4816e-82.5282e-81.4400e-84.7264e-63.7350e-72.5878e-83.4437e-993.8359
MONC IVHHZ4.2359e-67.8084e-76.1519e-72.1024e-78.3187e-81.3681e-52.3389e-61.1342e-71.7768e-899.731
MONC IVHHN4.7708e-67.2567e-75.9532e-73.5467e-71.4353e-79.4039e-62.8867e-61.7920e-72.1368e-899.731
MONC IVHHE8.3372e-69.2238e-77.0119e-72.3577e-71.0915e-71.3686e-53.7813e-61.4204e-72.2669e-899.731
PCP GUHHZ3.5961e-65.1057e-73.0139e-79.0111e-84.0482e-87.1258e-61.8380e-66.0812e-81.0833e-8104.175
PCP GUHHN3.3570e-63.6356e-72.5854e-78.9497e-83.8007e-86.4448e-61.3542e-66.0200e-87.5764e-9104.175
PCP GUHHE3.5113e-64.3519e-72.9377e-79.2178e-84.4956e-88.4485e-61.3599e-66.5615e-81.0854e-8104.175
ROTM GUHHZ1.0329e-51.3989e-65.9386e-72.1997e-79.0032e-81.6682e-52.6823e-61.2595e-72.9157e-8104.554
ROTM GUHHN1.2574e-52.5992e-61.7497e-66.4230e-72.5736e-73.8378e-59.4680e-63.7026e-75.7374e-8104.554
ROTM GUHHE1.1223e-51.5453e-61.2319e-65.0869e-72.1352e-72.5958e-56.8145e-62.7219e-74.1888e-8104.554
*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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