MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.9
2025-07-30 07:15:26 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-30 08:50:10

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Earthquake info - Manual location
Event - ID :250730071344
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2025-07-30 07:15:26.632 (UTC)
Location : Latitude: 44.053 N, Longitude: 7.641 E
Area :Alpi Marittime
Depth (km) :5.30
Distances (km) : 9.3 --- Briga Alta
12.0 --- Triora
12.7 --- Molini di Triora
13.3 --- Pigna
13.4 --- Mendatica
14.0 --- Castel Vittorio
14.2 --- Montegrosso Pian Latte
15.5 --- Cosio di Arroscia
17.3 --- Limone Piemonte
17.7 --- Baiardo
18.1 --- Rocchetta Nervina
18.3 --- Pornassio
18.9 --- Rezzo
19.1 --- Apricale
19.2 --- Isolabona
20.6 --- Perinaldo
20.7 --- Carpasio
21.3 --- Airole
21.3 --- Montalto Ligure
21.6 --- Olivetta San Michele

Quality location estimate: Erh: 0.5 km, Erz: 0.9 km, Nf: 38, Gap: 77 °, Rms: 0.22


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.
MLIGIV2025-07-30 07:15:28.7870.0200-0.401.092025-07-30 07:15:29.9830.0400-1.170.049.6
SAOFFR2025-07-30 07:15:29.5500.00700.290.412025-07-30 07:15:30.9970.0400-0.251.1811.7
MGROGU2025-07-30 07:15:29.8100.0130-0.430.952025-07-30 07:15:31.9340.0541-0.990.1115.1
BRDIT2025-07-30 07:15:30.6880.0200-0.011.732025-07-30 07:15:33.2460.0400-0.420.9819.4
TURFFR2025-07-30 07:15:31.5500.01200.051.472025-07-30 07:15:34.1300.0702-0.880.1122.3
BIGNGU2025-07-30 07:15:31.2600.0120-0.011.742025-07-30 07:15:34.3790.0712-0.261.2422.7
IMIGU2025-07-30 07:15:31.8700.01900.021.632025-07-30 07:15:35.6340.0822-0.051.4526.4
GBOSGU2025-07-30 07:15:32.0200.01400.031.572025-07-30 07:15:35.9650.08820.330.4127.0
ENRGU2025-07-30 07:15:31.7800.0140-0.071.502025-07-30 07:15:35.0800.1053-0.391.0127.2
BURYGU2025-07-30 07:15:32.7580.0200-0.011.672025-07-30 07:15:36.9260.1002-0.191.3431.3
ESCAFR2025-07-30 07:15:31.0870.0200-2.160.002025-07-30 07:15:37.7500.0400-0.181.3333.1
STVGU2025-07-30 07:15:32.8600.0170-0.071.512025-07-30 07:15:36.9400.1023-0.301.1833.6
ROROGU2025-07-30 07:15:33.0500.0180-0.291.222025-07-30 07:15:37.8100.1985-0.231.1835.0
MVIFFR2025-07-30 07:15:35.2440.02000.071.272025-07-30 07:15:40.9900.1785-0.291.1143.1
VINDIV2025-07-30 07:15:35.0500.0200-0.301.222025-07-30 07:15:40.7870.0400-0.440.8447.1
ISOFR2025-07-30 07:15:36.1600.02510.320.422025-07-30 07:15:42.5100.04000.320.4849.7
PZZGU2025-07-30 07:15:38.7800.03310.081.192025-07-30 07:15:47.0600.1985-0.011.0865.8
SURFFR2025-07-30 07:15:41.1600.0412-0.161.362025-07-30 07:15:51.2600.2456-0.220.9981.4
PCPGU2025-07-30 07:15:43.5900.04521.410.002025-07-30 07:15:55.6970.04002.650.0090.3


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
SAOF FRHH0.824.64e-111.7223
MGRO GUHH0.843.05e-115.195
BRD ITHN1.002.78e-119.4158
TURF FRHH0.598.33e-222.3246
BIGN GUEH0.721.10e-122.7159
IMI GUHH0.891.67e-126.4128
GBOS GUHH1.058.66e-227.037
ENR GUHH0.931.74e-127.2318
BURY GUHH0.951.02e-131.3193
ESCA FRHH0.695.04e-233.1221
STV GUHH1.139.12e-233.6311
RORO GUHH0.816.04e-235.079
ISO FRHH0.401.16e-249.7287
PZZ GUHH1.146.04e-265.8321
PCP GUHH1.252.51e-290.353


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.
(°)
SAOF FRHHZ9.2073e-62.5132e-62.6207e-62.1990e-61.2592e-61.6614e-51.0646e-51.6002e-61.0324e-711.7223
SAOF FRHHN8.0057e-63.4051e-62.6221e-62.8186e-62.2954e-62.0838e-51.4891e-54.5541e-61.3551e-711.7223
SAOF FRHHE8.9790e-63.0778e-62.7552e-62.6665e-61.8392e-62.4481e-51.7392e-52.7427e-61.1841e-711.7223
MGRO GUHHZ6.5395e-62.2358e-62.3769e-61.5594e-61.0018e-61.7274e-51.2620e-51.4253e-61.2106e-715.195
MGRO GUHHN1.4794e-51.9549e-61.5642e-61.8832e-61.8008e-63.0794e-56.6617e-61.9897e-69.6384e-815.195
MGRO GUHHE7.2657e-61.9165e-62.3304e-61.2049e-68.7479e-72.6091e-51.4927e-51.2734e-68.7198e-815.195
BRD ITHNZ5.4879e-61.1964e-61.2712e-65.6489e-72.3844e-71.2655e-58.5776e-63.1604e-73.6457e-819.4158
BRD ITHNN1.3498e-53.0331e-62.7291e-61.6632e-66.3050e-73.2940e-51.3175e-57.2406e-78.3770e-819.4158
BRD ITHNE8.5241e-62.7488e-62.3056e-61.2008e-66.5353e-73.6024e-51.5342e-57.9222e-76.8961e-819.4158
TURF FRHHZ1.7823e-64.0357e-73.4085e-72.0405e-71.0870e-75.4449e-62.3441e-61.2018e-71.2464e-822.3246
TURF FRHHN3.0886e-67.2565e-75.9519e-74.1311e-74.8168e-71.0432e-53.1333e-69.3999e-73.0535e-822.3246
TURF FRHHE2.9746e-65.0651e-74.4885e-72.4103e-71.3961e-76.8206e-62.8123e-61.6787e-71.3151e-822.3246
BIGN GUEHZ4.7034e-67.0217e-74.6864e-72.8040e-71.6358e-77.9347e-62.2989e-61.8466e-71.7773e-822.7159
BIGN GUEHN1.7388e-51.7056e-69.9601e-74.9859e-71.9595e-71.7637e-53.5262e-62.4069e-73.6450e-822.7159
BIGN GUEHE1.0866e-51.4885e-68.4769e-74.8666e-72.1507e-71.9124e-52.8161e-62.8141e-73.3833e-822.7159
IMI GUHHZ4.9733e-68.5271e-76.9856e-75.5240e-72.0725e-72.1386e-53.9564e-62.1677e-72.9575e-826.4128
IMI GUHHN1.2331e-52.0151e-61.6876e-69.4606e-73.5137e-72.7255e-56.7036e-64.1276e-75.1505e-826.4128
IMI GUHHE6.0399e-61.4087e-68.9429e-74.1900e-71.9404e-72.0033e-54.6035e-62.6601e-72.8194e-826.4128
GBOS GUHHZ3.3860e-67.5541e-74.7608e-72.3010e-79.8292e-89.4376e-61.7286e-61.0190e-71.6639e-827.037
GBOS GUHHN1.9878e-65.4200e-75.1239e-73.8745e-71.8167e-76.9751e-61.8588e-62.4521e-72.1453e-827.037
GBOS GUHHE3.5492e-67.0427e-76.7017e-74.7963e-72.0536e-78.1501e-63.9321e-62.7382e-72.4049e-827.037
ENR GUHHZ6.5862e-61.4262e-61.0571e-64.7873e-72.0160e-71.4634e-55.5057e-62.7930e-73.8825e-827.2318
ENR GUHHN1.4445e-52.0479e-61.4273e-67.0200e-72.8842e-73.1369e-55.8344e-64.3237e-76.3386e-827.2318
ENR GUHHE1.5814e-51.8197e-61.3713e-65.9174e-72.2608e-73.6616e-56.4465e-63.2289e-75.0927e-827.2318
BURY GUHHZ2.4226e-66.1161e-75.8423e-73.0418e-71.2931e-76.8522e-62.6330e-61.4502e-71.7688e-831.3193
BURY GUHHN2.8859e-65.5723e-75.3979e-73.0212e-71.1054e-71.0495e-52.9972e-61.3642e-71.5784e-831.3193
BURY GUHHE4.4384e-69.0477e-76.2664e-75.8840e-73.7396e-79.7596e-63.4519e-64.2716e-72.9736e-831.3193
ESCA FRHHZ1.3700e-63.3259e-72.4724e-71.2640e-74.9062e-83.6144e-61.1263e-65.1572e-87.7321e-933.1221
ESCA FRHHN2.1522e-64.3212e-74.1479e-71.5826e-77.4463e-85.0302e-63.0934e-69.8570e-81.3031e-833.1221
ESCA FRHHE1.9716e-64.3797e-74.1315e-73.4298e-71.8949e-74.7632e-61.9551e-62.3088e-71.7956e-833.1221
STV GUHHZ4.0065e-69.3304e-78.4913e-73.2292e-71.4294e-78.1146e-65.6210e-61.8945e-72.4340e-833.6311
STV GUHHN4.2264e-69.0096e-75.1333e-71.5270e-79.0148e-89.6159e-61.8807e-61.4617e-71.9995e-833.6311
STV GUHHE5.2988e-61.1449e-68.5336e-72.6100e-71.0651e-78.9888e-65.6547e-61.4997e-72.8336e-833.6311
RORO GUHHZ2.4377e-65.0763e-73.9238e-72.1192e-71.0015e-79.1070e-62.2603e-61.1197e-71.2638e-835.079
RORO GUHHN2.8800e-68.8329e-75.1903e-72.1774e-71.2499e-71.2501e-52.7075e-61.4572e-71.8843e-835.079
RORO GUHHE2.8096e-66.3043e-74.0116e-71.6500e-78.5014e-88.2416e-62.3126e-61.1810e-71.5756e-835.079
ISO FRHHZ8.5240e-71.2348e-79.9865e-83.9201e-82.1217e-81.9080e-65.1331e-72.9501e-83.3889e-949.7287
ISO FRHHN9.0000e-71.2957e-71.0219e-74.5055e-81.8268e-83.4866e-65.2880e-72.3584e-83.6786e-949.7287
ISO FRHHE5.5321e-71.3525e-78.8510e-84.0811e-82.6010e-82.7314e-64.4275e-72.9980e-82.8683e-949.7287
PZZ GUHHZ1.7301e-65.2654e-75.0449e-71.8562e-76.6990e-85.1507e-63.6366e-69.8655e-81.3932e-865.8321
PZZ GUHHN2.1007e-66.5238e-75.4319e-72.7512e-79.4085e-85.8660e-62.7824e-61.4076e-72.0111e-865.8321
PZZ GUHHE2.2364e-66.3815e-75.0739e-72.1594e-77.2912e-85.5924e-63.2693e-61.0129e-71.5645e-865.8321
PCP GUHHZ6.9241e-71.8020e-71.7278e-78.0259e-83.5504e-81.6732e-61.2644e-64.2718e-84.4351e-990.353
PCP GUHHN6.5912e-71.9017e-71.8860e-71.3064e-75.3513e-81.6834e-61.0548e-66.3122e-86.1657e-990.353
PCP GUHHE7.9465e-71.8388e-71.8524e-71.0040e-74.4645e-81.9003e-61.0948e-65.2816e-85.6161e-990.353
*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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