MANUAL Location - Area: Frignano , magnitude (ML): 0.9
2025-10-09 09:38:47 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-10 07:03:15

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Earthquake info - Manual location
Event - ID :251009093732
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2025-10-09 09:38:47.628 (UTC)
Location : Latitude: 44.272 N, Longitude: 10.171 E
Area :Frignano
Depth (km) :13.13
Distances (km) : 4.1 --- Comano
5.1 --- Fivizzano
7.7 --- Casola in Lunigiana
9.0 --- Giuncugnano
10.5 --- Licciana Nardi
11.5 --- Minucciano
11.7 --- Sillano
11.9 --- Collagna
14.0 --- Piazza al Serchio
14.6 --- Ligonchio
14.9 --- Bagnone
16.2 --- Monchio delle Corti
16.4 --- Busana
17.3 --- Aulla
17.7 --- Villafranca in Lunigiana
17.9 --- San Romano in Garfagnana
17.9 --- Ramiseto
18.1 --- Camporgiano
18.2 --- Tresana
18.4 --- Palanzano

Quality location estimate: Erh: 0.6 km, Erz: 0.5 km, Nf: 38, Gap: 69 °, Rms: 0.19


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.
FIVIGU2025-10-09 09:38:50.3700.02000.031.662025-10-09 09:38:52.2180.0400-0.031.6814.4
EQUIGU2025-10-09 09:38:51.0300.01800.031.682025-10-09 09:38:53.4300.04000.021.6518.0
AULIT2025-10-09 09:38:51.6310.0200-0.081.482025-10-09 09:38:54.5080.0400-0.111.2821.7
SARMGU2025-10-09 09:38:52.1800.0120-0.310.642025-10-09 09:38:55.4800.0732-0.560.4925.1
VLCMN2025-10-09 09:38:52.2700.01200.021.732025-10-09 09:38:55.2300.0742-0.390.6525.2
ERBMIV2025-10-09 09:38:53.4610.1807-0.011.132025-10-09 09:38:57.0900.1835-0.830.2628.9
GRAMGU2025-10-09 09:38:52.9200.0140-0.031.722025-10-09 09:38:56.8700.09020.220.5629.3
GSCLGU2025-10-09 09:38:54.4100.1055-0.690.372025-10-09 09:38:59.1340.1113-1.430.0237.0
PLMAIV2025-10-09 09:38:54.6200.02410.150.762025-10-09 09:38:58.9600.1193-0.440.6337.7
CMEIT2025-10-09 09:38:54.8180.02000.021.632025-10-09 09:38:59.5500.0400-0.440.6239.2
CARDGU2025-10-09 09:38:54.5020.0200-0.071.512025-10-09 09:38:59.6200.11630.041.1539.3
BDIIV2025-10-09 09:38:54.7200.0200-0.770.262025-10-09 09:39:00.7500.1273-0.400.6943.5
CARIT2025-10-09 09:38:55.7880.02000.031.542025-10-09 09:39:01.2640.0400-0.410.6646.0
BVTIT2025-10-09 09:38:56.1410.0200-0.051.522025-10-09 09:39:01.9670.0400-0.330.7646.7
MAIMGU2025-10-09 09:38:56.5140.02000.101.162025-10-09 09:39:02.3800.2587-0.390.7349.2
MSSAIV2025-10-09 09:38:57.3200.02710.021.482025-10-09 09:39:03.8900.1685-0.610.4854.1
POPMGU2025-10-09 09:38:57.3800.0200-0.081.392025-10-09 09:39:04.2500.1615-0.320.8354.8
PIIIV2025-10-09 09:38:59.6680.0200-0.280.792025-10-09 09:39:07.8100.2056-1.080.1468.6
GORRGU2025-10-09 09:39:01.7230.02000.031.252025-10-09 09:39:12.2490.0400-0.101.0080.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
SARM GUEH0.679.65e-225.1118
VLC MNHH0.453.44e-225.2126
ERBM IVEH0.676.18e-228.949
GRAM GUHH1.072.79e-129.3341
GSCL GUHH0.805.25e-237.075
PLMA IVHH0.693.83e-237.7226
CME ITHN1.391.82e-139.2164
CARD GUHH0.997.22e-239.3138
BDI IVHH0.713.93e-243.5124
CAR ITHN1.137.35e-246.0267
BVT ITHN1.035.61e-246.7310
MAIM GUHH0.702.11e-249.2147
MSSA IVHH1.034.13e-254.1276
POPM GUHH0.603.09e-254.8118
PII IVHH1.022.44e-268.6155
GORR GUHH0.687.92e-380.2298


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.
(°)
FIVI GUHNZ1.8027e-42.4871e-51.2044e-52.5993e-61.7592e-63.3021e-42.8859e-53.0406e-66.0706e-714.4224
FIVI GUHNN1.0104e-41.9480e-51.1062e-52.9541e-61.4664e-62.2176e-44.1394e-52.0995e-64.3663e-714.4224
FIVI GUHNE1.6038e-42.9830e-51.4150e-52.9919e-61.8455e-64.3917e-43.6697e-53.2110e-67.0446e-714.4224
EQUI GUHHZ9.2665e-61.0681e-65.1307e-72.0782e-78.1094e-81.3776e-53.6333e-61.2058e-72.4262e-818.0187
EQUI GUHHN9.0527e-61.1381e-63.6128e-71.6276e-76.9554e-81.5575e-52.0301e-69.6075e-82.3400e-818.0187
EQUI GUHHE6.5062e-68.5455e-74.0961e-72.6209e-71.2828e-71.5016e-52.2593e-61.7197e-72.1007e-818.0187
SARM GUEHZ5.2499e-66.5354e-73.1763e-79.3613e-84.1772e-87.6174e-62.0330e-67.1972e-81.2040e-825.1118
SARM GUEHN6.8137e-68.7357e-76.8114e-73.9894e-71.7765e-71.6801e-54.0138e-62.4835e-72.8033e-825.1118
SARM GUEHE7.5256e-69.2493e-74.9772e-72.4550e-78.7611e-81.2444e-52.8600e-61.3352e-72.1732e-825.1118
VLC MNHHZ3.6989e-65.2611e-72.1129e-79.7441e-85.1832e-87.3345e-68.4010e-76.3152e-89.9628e-925.2126
VLC MNHHN4.8379e-66.9312e-73.1455e-71.2022e-76.4232e-81.4334e-51.5070e-68.3291e-81.7208e-825.2126
VLC MNHHE4.2671e-65.1608e-72.1327e-71.0194e-74.8647e-87.9689e-68.6400e-76.8925e-81.2557e-825.2126
ERBM IVEHZ3.1900e-63.9033e-72.5900e-71.6943e-77.3710e-88.6720e-61.1912e-67.3637e-81.0186e-828.949
ERBM IVEHN3.8095e-67.9575e-75.6266e-72.3210e-77.6173e-81.0384e-52.5276e-69.7255e-81.8273e-828.949
ERBM IVEHE5.6119e-67.8981e-74.0343e-72.0000e-77.3207e-81.5792e-51.9195e-61.0717e-71.8852e-828.949
GRAM GUHHZ2.4576e-53.2993e-61.8024e-63.9285e-72.3576e-73.9075e-57.1239e-63.9594e-77.9100e-829.3341
GRAM GUHHN2.2778e-54.3046e-62.5096e-67.7931e-73.3432e-75.6542e-51.1263e-55.2168e-71.1003e-729.3341
GRAM GUHHE1.6572e-52.8130e-62.0187e-67.3938e-74.1573e-72.9346e-51.4875e-56.1292e-79.0748e-829.3341
GSCL GUHHZ1.9057e-63.2162e-71.9898e-78.0069e-83.6682e-84.6346e-67.6304e-75.2457e-88.7394e-937.075
GSCL GUHHN2.5522e-66.0862e-74.4148e-71.8645e-77.6257e-86.8663e-62.6343e-61.0112e-71.5111e-837.075
GSCL GUHHE2.8177e-66.7809e-74.0747e-71.4971e-79.6823e-86.9618e-62.0003e-61.5114e-71.9434e-837.075
PLMA IVHHZ6.5988e-66.7270e-72.0699e-79.3630e-84.6592e-87.8279e-61.2755e-67.2813e-81.3373e-837.7226
PLMA IVHHN6.1222e-67.1418e-73.2523e-71.1435e-75.4387e-81.0831e-51.4684e-67.9634e-81.5458e-837.7226
PLMA IVHHE6.6015e-68.1012e-72.8646e-71.1021e-75.3864e-81.0699e-51.1413e-68.2785e-81.6722e-837.7226
CME ITHNZ9.5323e-61.2375e-66.7355e-73.0817e-71.6326e-71.3329e-53.1447e-62.1011e-72.7523e-839.2164
CME ITHNN1.7007e-52.5761e-61.8173e-64.6156e-72.7467e-73.8786e-58.4421e-64.2785e-77.6771e-839.2164
CME ITHNE1.2942e-51.8559e-61.2625e-64.9571e-72.2534e-72.1992e-55.2239e-63.4225e-74.8582e-839.2164
CARD GUHHZ6.1841e-66.1141e-72.4381e-78.7644e-83.9446e-81.4273e-51.2427e-66.0199e-81.4054e-839.3138
CARD GUHHN1.1285e-51.5974e-66.3480e-71.5191e-77.6881e-82.1151e-52.4234e-61.3350e-73.5074e-839.3138
CARD GUHHE1.1941e-51.5234e-66.7513e-72.1988e-79.6859e-82.0156e-51.4944e-61.6792e-73.1944e-839.3138
BDI IVHHZ6.0710e-65.4574e-71.4516e-75.2756e-82.5774e-86.7200e-67.4926e-75.0483e-81.1042e-843.5124
BDI IVHHN1.1268e-59.5900e-73.1038e-72.1324e-77.1542e-81.2068e-51.1302e-69.2731e-81.8237e-843.5124
BDI IVHHE1.8886e-51.5330e-63.1526e-71.1820e-74.4543e-81.6290e-51.0341e-69.3611e-82.9124e-843.5124
CAR ITHNZ6.8505e-61.0332e-64.6335e-72.7786e-71.4403e-71.1464e-52.7096e-61.8767e-72.7948e-846.0267
CAR ITHNN1.0486e-51.4019e-66.7837e-73.3818e-71.7931e-72.1125e-53.0195e-62.2571e-72.9794e-846.0267
CAR ITHNE7.3933e-61.0335e-66.0770e-73.4473e-71.6925e-71.5864e-54.1083e-62.7223e-72.6126e-846.0267
BVT ITHNZ3.8978e-63.9328e-72.9078e-72.3610e-71.4585e-73.9652e-61.7873e-61.4462e-71.2210e-846.7310
BVT ITHNN2.4991e-64.6956e-74.0192e-72.3576e-71.4325e-74.4903e-62.5173e-62.7502e-71.5595e-846.7310
BVT ITHNE3.2118e-67.2107e-74.7067e-72.8159e-71.3864e-78.2590e-62.3770e-61.8264e-71.7138e-846.7310
MAIM GUHHZ1.4383e-62.1850e-71.1368e-75.6634e-82.5599e-83.1250e-64.5768e-73.7359e-86.0031e-949.2147
MAIM GUHHN2.0133e-62.2948e-71.4763e-71.0549e-73.8004e-84.2324e-65.6018e-74.6324e-86.5173e-949.2147
MAIM GUHHE1.6485e-62.8576e-71.7392e-78.0316e-83.1193e-85.5950e-65.6135e-74.5145e-87.0755e-949.2147
MSSA IVHHZ1.2628e-62.3297e-71.2498e-74.6286e-82.2207e-82.4084e-67.7562e-73.2329e-84.2591e-954.1276
MSSA IVHHN2.4457e-65.0994e-73.4405e-71.0245e-74.9608e-85.1261e-61.6800e-67.8093e-81.2088e-854.1276
MSSA IVHHE1.1376e-62.0949e-71.6211e-76.5330e-82.6373e-82.7236e-69.5402e-73.3298e-84.9347e-954.1276
POPM GUHHZ2.3597e-62.6193e-71.7718e-74.9065e-82.2868e-85.0394e-68.7108e-73.8889e-86.7643e-954.8118
POPM GUHHN2.9363e-64.7758e-73.3542e-78.4413e-84.2039e-87.6548e-61.2639e-66.8726e-81.3294e-854.8118
POPM GUHHE2.4571e-64.7379e-73.1411e-78.8963e-84.8212e-85.0440e-61.4892e-66.7714e-81.1895e-854.8118
PII IVHHZ1.7413e-62.7030e-71.7508e-75.9135e-82.9044e-82.8647e-68.6125e-73.6049e-85.8604e-968.6155
PII IVHHN1.9008e-63.0016e-72.0490e-76.6197e-83.1263e-83.8221e-68.8751e-74.2994e-86.6600e-968.6155
PII IVHHE2.2788e-64.2576e-72.4617e-78.2588e-83.1278e-85.9862e-69.7846e-74.5756e-88.6547e-968.6155
GORR GUHHZ6.0779e-71.1064e-75.8381e-83.9785e-83.0555e-81.2619e-64.1804e-75.0302e-84.3818e-980.2298
GORR GUHHN6.9734e-71.1219e-77.7523e-83.2456e-81.5350e-81.6661e-63.7906e-72.0005e-82.3333e-980.2298
GORR GUHHE6.4466e-71.1800e-76.9093e-83.0910e-81.6182e-81.5703e-63.0692e-71.9282e-82.7660e-980.2298
*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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