MANUAL Location - Area: Frignano , magnitude (ML): 0.6
2025-10-03 04:18:57 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-03 07:45:03

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Earthquake info - Manual location
Event - ID :251003041753
Magnitude (ML) :0.6 +/- 0.2
Origin Time :2025-10-03 04:18:57.335 (UTC)
Location : Latitude: 44.266 N, Longitude: 10.491 E
Area :Frignano
Depth (km) :9.03
Distances (km) : 7.3 --- Frassinoro
11.2 --- Villa Minozzo
12.1 --- Pievepelago
13.1 --- Ligonchio
13.4 --- Riolunato
13.5 --- Toano
14.0 --- Palagano
14.0 --- Villa Collemandina
14.4 --- Castiglione di Garfagnana
14.4 --- Montefiorino
15.6 --- San Romano in Garfagnana
15.7 --- Fiumalbo
15.7 --- Sillano
16.0 --- Pieve Fosciana
16.8 --- Fosciandora
17.2 --- Camporgiano
17.6 --- Busana
17.8 --- Piazza al Serchio
18.2 --- Montecreto
18.4 --- Castelnuovo di Garfagnana

Quality location estimate: Erh: 0.8 km, Erz: 0.9 km, Nf: 22, Gap: 160 °, Rms: 0.13


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.
SARMGU2025-10-03 04:19:00.3600.00800.091.362025-10-03 04:19:02.4350.0501-0.041.5215.4
VLCMN2025-10-03 04:19:00.9000.01000.280.612025-10-03 04:19:02.9680.2877-0.110.8717.4
ERBMIV2025-10-03 04:19:00.7490.0080-1.210.002025-10-03 04:19:02.7000.0400-2.900.0020.7
BDIIV2025-10-03 04:19:02.2900.0140-0.021.652025-10-03 04:19:05.8600.0822-0.131.0226.1
CARDGU2025-10-03 04:19:02.8300.01600.280.602025-10-03 04:19:06.5300.09120.121.2428.3
FIVIGU2025-10-03 04:19:02.9280.0200-0.011.652025-10-03 04:19:07.1080.04000.091.3530.6
EQUIGU2025-10-03 04:19:02.6650.0200-0.330.372025-10-03 04:19:07.1800.09920.041.3430.6
POPMGU2025-10-03 04:19:03.6700.01700.021.642025-10-03 04:19:08.5000.10430.151.1133.8
CMEIT2025-10-03 04:19:04.0240.0200-0.390.332025-10-03 04:19:09.8160.04000.161.1039.0
MAIMGU2025-10-03 04:19:04.4910.0200-0.111.072025-10-03 04:19:09.9950.0400-0.021.3340.4
PLMAIV2025-10-03 04:19:07.5180.02000.021.482025-10-03 04:19:14.4980.0400-0.420.3657.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
SARM GUEH0.371.18e-115.4218
VLC MNHH0.375.64e-217.4215
BDI IVHH0.689.65e-226.1160
CARD GUHH0.686.68e-228.3182
FIVI GUHN0.878.92e-230.6264
EQUI GUHH0.473.54e-230.6248
POPM GUHH0.689.66e-233.8139
CME ITHN0.997.31e-239.0204
MAIM GUHH0.391.55e-240.4180
PLMA IVHH0.581.30e-257.0245


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.
(°)
SARM GUEHZ1.1284e-51.6454e-61.0162e-62.9519e-71.7053e-71.2059e-54.7570e-62.4385e-73.8527e-815.4218
SARM GUEHN1.2809e-51.7141e-61.0161e-64.1190e-72.0082e-71.3547e-54.6072e-62.9403e-74.4272e-815.4218
SARM GUEHE9.3310e-61.3892e-67.4936e-72.7532e-71.4514e-71.2318e-53.4295e-62.2170e-73.8972e-815.4218
VLC MNHHZ1.4540e-51.5563e-65.5119e-71.9082e-71.1791e-71.2616e-51.9738e-61.8721e-72.5571e-817.4215
VLC MNHHN8.1391e-69.6292e-74.3341e-71.6451e-78.7266e-82.0257e-52.0384e-61.3646e-72.5079e-817.4215
VLC MNHHE1.3535e-51.4708e-64.9703e-71.3274e-77.5884e-81.2754e-51.9766e-61.1085e-71.8751e-817.4215
ERBM IVEHZ2.4056e-63.6064e-71.7977e-77.1715e-84.0541e-88.3628e-68.2696e-76.7350e-87.9779e-920.7340
ERBM IVEHN2.9997e-64.6657e-72.4047e-71.0085e-73.3744e-81.1322e-57.6482e-74.9801e-89.8977e-920.7340
ERBM IVEHE3.6085e-64.4105e-72.3115e-77.4432e-84.1372e-81.2760e-57.9056e-75.9104e-81.0970e-820.7340
BDI IVHHZ1.0467e-51.1538e-62.9636e-71.2317e-75.3993e-81.8173e-51.5112e-69.9277e-82.3303e-826.1160
BDI IVHHN9.5208e-61.4734e-68.4857e-72.6411e-71.2089e-73.0784e-55.6567e-61.8634e-73.4618e-826.1160
BDI IVHHE6.4990e-61.1204e-64.8761e-71.6549e-71.2329e-72.8077e-51.6087e-61.9633e-72.5296e-826.1160
CARD GUHHZ4.8941e-66.9633e-72.2616e-77.5943e-83.9009e-81.7756e-51.1109e-66.1427e-81.2282e-828.3182
CARD GUHHN1.3356e-51.3956e-64.6630e-71.1787e-76.4387e-81.9758e-51.2790e-61.0580e-72.4453e-828.3182
CARD GUHHE9.6787e-61.4836e-65.7185e-71.5576e-78.1343e-83.1885e-52.0631e-61.3765e-73.0075e-828.3182
FIVI GUHNZ1.2797e-51.1805e-67.4832e-73.0115e-71.5079e-72.6340e-52.0899e-62.1014e-72.8461e-830.6264
FIVI GUHNN5.9473e-61.2885e-68.0037e-72.8624e-71.5324e-71.2214e-52.9986e-62.0941e-73.3939e-830.6264
FIVI GUHNE5.6749e-69.3693e-76.3590e-72.6138e-71.7106e-71.4942e-52.6031e-62.1752e-72.0472e-830.6264
EQUI GUHHZ2.8005e-62.7386e-71.5346e-76.6580e-84.2203e-84.3134e-69.8413e-75.7157e-88.4825e-930.6248
EQUI GUHHN1.6555e-62.5998e-71.1112e-77.9881e-86.8361e-83.2833e-66.1274e-77.7765e-87.3548e-930.6248
EQUI GUHHE2.2612e-63.1977e-73.0189e-72.4564e-71.3548e-73.9822e-61.7850e-61.4896e-79.7383e-930.6248
POPM GUHHZ5.4389e-67.7513e-74.4828e-71.0922e-75.2999e-89.8299e-63.0415e-68.9304e-81.7801e-833.8139
POPM GUHHN4.8140e-68.2289e-75.8127e-71.7659e-77.5042e-81.3580e-52.5968e-61.1591e-72.0405e-833.8139
POPM GUHHE6.0888e-61.1214e-68.0644e-72.4650e-71.4192e-71.6008e-55.7710e-62.0931e-73.3934e-833.8139
CME ITHNZ2.2417e-64.6599e-73.0412e-74.3914e-74.4749e-73.4388e-61.3139e-67.5381e-73.8113e-839.0204
CME ITHNN2.6510e-64.9711e-74.3382e-74.3500e-74.8059e-74.7229e-62.3269e-66.8041e-75.5339e-839.0204
CME ITHNE2.6629e-64.3890e-73.6057e-72.7557e-71.7550e-74.7114e-62.1496e-62.0119e-71.6456e-839.0204
MAIM GUHHZ9.2157e-71.1789e-76.8842e-83.5185e-81.7785e-81.8481e-63.6234e-72.2932e-82.6784e-940.4180
MAIM GUHHN1.4476e-61.9435e-71.0192e-75.4786e-83.0331e-82.4622e-65.9079e-73.8238e-85.0612e-940.4180
MAIM GUHHE1.1415e-61.4842e-71.4019e-78.5459e-83.1927e-82.4714e-67.4534e-73.7704e-84.8416e-940.4180
PLMA IVHHZ6.1048e-77.6908e-84.9480e-84.8868e-83.7370e-89.7271e-72.3730e-75.0828e-82.9618e-957.0245
PLMA IVHHN8.5381e-71.3055e-79.8129e-87.7846e-86.0481e-82.2278e-64.5759e-76.5845e-84.4892e-957.0245
PLMA IVHHE9.7147e-71.2989e-77.8765e-88.8504e-86.3494e-82.6392e-63.7858e-76.6443e-85.0727e-957.0245
*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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