MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.4
2025-07-13 03:36:04 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-14 07:33:35

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Earthquake info - Manual location
Event - ID :250713033538
Magnitude (ML) :0.4 +/- 0.2
Origin Time :2025-07-13 03:36:04.223 (UTC)
Location : Latitude: 44.070 N, Longitude: 7.791 E
Area :Alpi Marittime
Depth (km) :5.02
Distances (km) : 1.4 --- Mendatica
2.1 --- Montegrosso Pian Latte
3.4 --- Cosio di Arroscia
3.6 --- Briga Alta
6.2 --- Pornassio
8.4 --- Rezzo
8.7 --- Triora
8.9 --- Molini di Triora
10.0 --- Armo
10.2 --- Pieve di Teco
13.5 --- Carpasio
13.6 --- Ormea
13.9 --- Vessalico
14.1 --- Caprauna
14.2 --- Aurigo
15.3 --- Borghetto d Arroscia
15.9 --- Caravonica
16.1 --- Borgomaro
16.1 --- Cesio
16.3 --- Montalto Ligure

Quality location estimate: Erh: 0.4 km, Erz: 0.2 km, Nf: 34, Gap: 60 °, Rms: 0.18


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.
MGROGU2025-07-13 03:36:06.1000.0100-0.021.912025-07-13 03:36:07.1100.0190-0.460.587.5
PVTIT2025-07-13 03:36:06.9540.0200-0.011.922025-07-13 03:36:08.6530.0400-0.420.6912.3
MLIGIV2025-07-13 03:36:07.4230.02000.031.822025-07-13 03:36:09.1670.0400-0.670.1513.5
GBOSGU2025-07-13 03:36:08.4300.01200.011.922025-07-13 03:36:10.9350.0621-0.370.7320.3
BRDIT2025-07-13 03:36:08.4870.0200-0.021.882025-07-13 03:36:11.3610.0400-0.320.7520.5
SAOFFR2025-07-13 03:36:09.1800.02000.400.292025-07-13 03:36:12.1300.0400-0.021.6321.7
ROROGU2025-07-13 03:36:08.9000.01400.041.742025-07-13 03:36:11.9500.0691-0.200.9523.1
BIGNGU2025-07-13 03:36:09.2070.02000.210.382025-07-13 03:36:12.2980.1163-0.240.9623.4
DNSPIT2025-07-13 03:36:09.8850.02000.310.352025-07-13 03:36:13.6170.04000.091.2127.8
TURFFR2025-07-13 03:36:11.5600.02000.380.332025-07-13 03:36:15.9300.1023-0.181.1134.0
ENRGU2025-07-13 03:36:10.8300.01900.001.792025-07-13 03:36:15.3800.1063-0.041.3135.1
BURYGU2025-07-13 03:36:11.3270.0200-0.021.732025-07-13 03:36:16.3580.1002-0.101.2537.4
STVGU2025-07-13 03:36:11.8800.0200-0.180.942025-07-13 03:36:16.9800.1283-0.460.6142.3
QLNOIV2025-07-13 03:36:13.8350.0200-0.410.692025-07-13 03:36:20.3000.2587-0.990.1452.8
PZZGU2025-07-13 03:36:17.3600.04220.021.342025-07-13 03:36:26.3200.2196-0.170.9472.6
PCPGU2025-07-13 03:36:18.6870.02000.750.052025-07-13 03:36:28.4520.20050.830.1179.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MGRO GUHH0.626.31e-17.5156
PVT ITHN0.301.26e-112.3107
GBOS GUHH0.232.22e-220.312
BRD ITHN0.426.66e-220.5195
RORO GUHH0.122.70e-223.178
BIGN GUEH0.293.83e-223.4191
DNSP ITHN0.666.53e-227.8125
TURF FRHH0.041.07e-234.0252
ENR GUHH0.625.29e-235.1301
BURY GUHH0.371.93e-237.4210
STV GUHH0.431.17e-242.3298
QLNO IVHH0.338.68e-352.857
PZZ GUHH0.337.49e-372.6312
PCP GUHH0.303.69e-379.949


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.
(°)
MGRO GUHHZ3.0515e-53.6008e-61.2748e-63.5516e-72.0050e-75.6119e-54.5273e-63.4587e-77.0501e-87.5156
MGRO GUHHN7.8059e-57.1301e-62.3166e-67.8155e-75.2692e-71.3579e-48.0981e-68.6597e-71.5900e-77.5156
MGRO GUHHE9.5676e-51.2117e-54.0764e-61.4200e-67.0672e-71.4917e-41.8369e-51.2362e-62.7147e-77.5156
PVT ITHNZ2.1344e-52.5052e-68.3490e-74.3084e-72.0380e-72.1690e-55.3795e-63.3222e-74.6976e-812.3107
PVT ITHNN1.9307e-52.6042e-61.2656e-63.7316e-72.1849e-74.5776e-53.6977e-63.2969e-75.6914e-812.3107
PVT ITHNE4.5604e-54.5304e-67.6741e-73.2326e-71.4503e-73.9296e-52.4920e-62.0789e-74.7501e-812.3107
GBOS GUHHZ2.3265e-63.6258e-71.4742e-75.4827e-83.0210e-84.3238e-66.1161e-74.9234e-87.9390e-920.312
GBOS GUHHN1.8555e-62.2242e-71.1846e-73.9425e-82.2197e-84.7539e-65.1255e-72.6581e-85.1320e-920.312
GBOS GUHHE1.8510e-64.2573e-71.7410e-75.1120e-82.9699e-85.3411e-66.4721e-74.8091e-88.8341e-920.312
BRD ITHNZ2.9975e-63.4520e-72.9195e-72.2565e-71.1407e-77.1216e-61.5792e-61.4722e-71.0926e-820.5195
BRD ITHNN3.4916e-65.5401e-74.9194e-73.5067e-72.0686e-78.5094e-62.3975e-63.5857e-72.1727e-820.5195
BRD ITHNE3.5455e-64.2305e-73.1822e-72.3527e-79.8621e-87.5348e-61.4252e-61.0179e-71.1600e-820.5195
SAOF FRHHZ4.2726e-76.7731e-84.7675e-83.5786e-81.6536e-86.9867e-72.5527e-72.1078e-81.8420e-921.7244
SAOF FRHHN6.8387e-71.0247e-76.1939e-83.1902e-81.6087e-81.2168e-62.7512e-71.9701e-81.9880e-921.7244
SAOF FRHHE5.5000e-78.7488e-85.3349e-82.7762e-81.5131e-81.0159e-63.1453e-71.8824e-81.7759e-921.7244
RORO GUHHZ2.4784e-63.8513e-71.9083e-75.7814e-83.2699e-86.3363e-69.7772e-74.2923e-86.5676e-923.178
RORO GUHHN3.0744e-65.3525e-72.6275e-75.8828e-83.2335e-89.7473e-61.0830e-65.7206e-81.2758e-823.178
RORO GUHHE3.5786e-64.2659e-72.6472e-76.2167e-83.6449e-88.2178e-61.2784e-65.4111e-89.4638e-923.178
BIGN GUEHZ2.1287e-64.0361e-71.7168e-75.7535e-83.7082e-86.6482e-67.5616e-76.1727e-88.7420e-923.4191
BIGN GUEHN4.6913e-65.3258e-72.8894e-77.7353e-84.3947e-86.9266e-61.2712e-66.8853e-81.4620e-823.4191
BIGN GUEHE4.5510e-65.2497e-71.8944e-77.3590e-88.5259e-88.1865e-67.4227e-71.3958e-71.8333e-823.4191
DNSP ITHNZ2.9856e-64.9727e-74.3153e-73.5825e-71.4647e-75.7920e-62.2657e-61.4885e-71.8187e-827.8125
DNSP ITHNN2.8143e-64.6043e-73.7769e-72.8733e-71.5251e-74.5963e-62.5128e-62.3055e-71.5518e-827.8125
DNSP ITHNE5.4867e-66.3559e-74.6925e-73.2263e-71.6252e-78.0228e-62.0149e-62.5312e-71.9879e-827.8125
TURF FRHHZ6.2498e-76.7683e-85.4888e-82.1652e-81.1931e-81.1154e-63.3060e-72.0911e-82.4455e-934.0252
TURF FRHHN9.9029e-72.1557e-79.3126e-82.8815e-81.8734e-82.2459e-65.0537e-72.5067e-84.0180e-934.0252
TURF FRHHE9.4658e-71.4368e-76.5239e-81.9055e-81.5261e-82.2630e-63.1859e-72.8490e-83.5995e-934.0252
ENR GUHHZ4.9614e-65.7444e-71.7797e-74.7520e-82.7277e-89.1047e-67.1828e-74.6590e-81.0606e-835.1301
ENR GUHHN1.4969e-51.6128e-63.6116e-71.0804e-76.3422e-81.9214e-51.5449e-61.2272e-73.1347e-835.1301
ENR GUHHE1.6160e-51.4025e-62.6136e-78.9767e-85.5722e-81.4264e-51.2835e-61.0742e-72.4985e-835.1301
BURY GUHHZ9.2799e-71.2354e-78.9833e-84.8210e-83.2614e-81.6547e-65.5812e-74.0370e-83.3800e-937.4210
BURY GUHHN1.2148e-61.9017e-71.1596e-74.5767e-82.8181e-82.0652e-66.9224e-73.8530e-85.2464e-937.4210
BURY GUHHE1.2247e-62.8538e-71.5616e-74.9707e-82.9707e-82.9940e-67.5712e-74.2750e-88.0998e-937.4210
STV GUHHZ1.8232e-62.1314e-76.7118e-81.9641e-81.0488e-82.5283e-62.8881e-71.9938e-83.7179e-942.3298
STV GUHHN1.6679e-62.2807e-71.0284e-72.6739e-81.5082e-84.7095e-63.4993e-72.5938e-84.5153e-942.3298
STV GUHHE3.0026e-63.0109e-77.7124e-82.2962e-81.4309e-84.5185e-63.6257e-72.8003e-86.2942e-942.3298
QLNO IVHHZ5.3674e-75.8066e-83.3419e-82.2437e-82.2643e-86.8237e-71.5251e-73.8731e-81.8163e-952.857
QLNO IVHHN6.6307e-79.3297e-86.7774e-83.5004e-82.0287e-81.4787e-64.9229e-72.4943e-82.7063e-952.857
QLNO IVHHE1.1888e-61.2145e-77.7383e-83.6989e-81.9586e-81.2860e-64.8190e-72.8316e-82.7782e-952.857
PZZ GUHHZ7.3677e-71.2264e-77.3333e-82.0690e-81.4080e-81.8561e-63.0528e-71.5873e-82.6308e-972.6312
PZZ GUHHN7.8197e-71.3991e-77.5513e-82.3445e-81.8233e-82.2276e-62.3086e-73.1293e-82.9630e-972.6312
PZZ GUHHE6.4523e-71.8985e-79.4765e-82.5805e-81.7446e-81.7452e-63.8569e-72.5125e-84.2869e-972.6312
PCP GUHHZ3.1346e-74.0895e-82.4594e-81.8591e-81.7204e-84.3798e-71.3734e-72.5513e-81.5880e-979.949
PCP GUHHN2.2614e-74.2233e-83.1060e-81.4543e-81.8816e-85.9546e-71.9108e-73.1838e-81.7182e-979.949
PCP GUHHE2.5897e-74.0755e-83.0984e-81.5994e-81.7387e-85.4172e-72.0950e-72.7409e-81.6900e-979.949
*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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