MANUAL Location - Area: Frignano , magnitude (ML): 0.6
2025-12-06 05:19:43 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-12-09 07:52:51

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Earthquake info - Manual location
Event - ID :251206051920
Magnitude (ML) :0.6 +/- 0.2
Origin Time :2025-12-06 05:19:43.542 (UTC)
Location : Latitude: 44.220 N, Longitude: 10.619 E
Area :Frignano
Depth (km) :21.34
Distances (km) : 1.6 --- Pievepelago
3.0 --- Riolunato
5.0 --- Fiumalbo
8.6 --- Montecreto
9.0 --- Abetone
9.2 --- Frassinoro
11.7 --- Palagano
12.2 --- Sestola
13.3 --- Lama Mocogno
14.1 --- Fanano
15.1 --- Montefiorino
16.3 --- Polinago
17.0 --- Fosciandora
17.3 --- Cutigliano
18.1 --- Toano
18.3 --- Castiglione di Garfagnana
18.9 --- Villa Collemandina
18.9 --- Coreglia Antelminelli
19.1 --- Pieve Fosciana
19.4 --- Barga

Quality location estimate: Erh: 1 km, Erz: 1.3 km, Nf: 20, Gap: 87 °, 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.
GSCLGU2025-12-06 05:19:47.7500.0190-1.040.162025-12-06 05:19:50.3500.0712-2.170.0026.5
SARMGU2025-12-06 05:19:48.5300.0221-0.141.452025-12-06 05:19:51.7300.0802-0.590.1428.6
VLCMN2025-12-06 05:19:48.8220.02000.001.812025-12-06 05:19:52.3500.0842-0.211.0929.5
POPMGU2025-12-06 05:19:49.3000.02510.091.352025-12-06 05:19:53.1200.0932-0.201.1731.3
CARDGU2025-12-06 05:19:49.3600.02610.021.772025-12-06 05:19:53.5500.09720.101.3432.5
ERBMIV2025-12-06 05:19:49.6110.0200-0.930.182025-12-06 05:19:54.2130.0400-1.480.0035.4
ZCCAIV2025-12-06 05:19:51.2880.0200-0.121.612025-12-06 05:19:57.5130.04000.210.8538.8
MAIMGU2025-12-06 05:19:50.7740.0200-0.121.592025-12-06 05:19:56.4600.12630.370.4041.6
EQUIGU2025-12-06 05:19:51.2580.0200-0.011.822025-12-06 05:19:56.7540.04000.171.0343.4
PIIIV2025-12-06 05:19:54.2530.0381-0.051.722025-12-06 05:20:01.4900.1825-0.480.5259.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
GSCL GUHH1.041.73e-126.5350
SARM GUEH0.791.01e-128.6257
VLC MNHH0.775.31e-229.5250
POPM GUHH0.456.61e-231.3150
CARD GUHH0.776.30e-232.5207
ZCCA IVHH0.381.82e-238.863
MAIM GUHH0.351.30e-241.6197
EQUI GUHH0.723.18e-243.4261
PII IVHH0.316.46e-359.8188


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.
(°)
GSCL GUHHZ3.9524e-65.5538e-73.2560e-71.2971e-75.8760e-84.2517e-62.5834e-67.7790e-81.5017e-826.5350
GSCL GUHHN8.7414e-62.1450e-61.2732e-65.0470e-72.8463e-71.9895e-55.8717e-64.3954e-76.4185e-826.5350
GSCL GUHHE5.4099e-61.2702e-66.8634e-72.7980e-71.1728e-71.2081e-53.7149e-61.6486e-72.9687e-826.5350
SARM GUEHZ5.3396e-68.9408e-74.6530e-71.6277e-77.8247e-86.2674e-62.5580e-61.1772e-71.9644e-828.6257
SARM GUEHN1.1622e-52.1567e-69.1167e-72.2127e-71.1664e-71.9486e-53.4025e-61.9496e-74.2429e-828.6257
SARM GUEHE7.1896e-61.1087e-66.8650e-72.7990e-71.2626e-78.9072e-64.6806e-61.7837e-72.5665e-828.6257
VLC MNHHZ3.1470e-64.0537e-71.8470e-79.1586e-83.8060e-84.7888e-66.6776e-76.4805e-89.4129e-929.5250
VLC MNHHN5.8005e-69.0187e-72.3085e-79.3994e-89.9055e-81.1073e-51.1560e-61.9581e-71.5136e-829.5250
VLC MNHHE4.1693e-67.3059e-73.8610e-71.4687e-76.5614e-81.3078e-52.3814e-61.0117e-71.7232e-829.5250
POPM GUHHZ1.1694e-51.1556e-62.8108e-77.0136e-83.9169e-81.2974e-51.3707e-66.3262e-81.3154e-831.3150
POPM GUHHN9.4575e-69.5916e-76.1409e-71.4265e-78.2179e-81.8206e-53.0297e-61.2692e-72.0483e-831.3150
POPM GUHHE5.1485e-68.4437e-76.0762e-72.0521e-78.3586e-81.2845e-53.5346e-61.2762e-72.2618e-831.3150
CARD GUHHZ7.8345e-61.0425e-62.3247e-71.1568e-75.9768e-81.2697e-57.1883e-79.9026e-82.1961e-832.5207
CARD GUHHN1.5366e-51.8324e-64.9585e-71.7311e-71.0243e-72.5159e-51.5163e-61.9940e-73.8861e-832.5207
CARD GUHHE1.0558e-51.3342e-64.7598e-71.1537e-75.8694e-82.7632e-51.3102e-61.0971e-72.8931e-832.5207
ERBM IVEHZ6.5604e-79.0103e-85.6513e-82.6036e-81.7387e-81.1038e-62.0859e-72.4021e-82.6222e-935.4324
ERBM IVEHN7.6409e-71.5900e-71.0824e-73.6698e-82.1222e-82.5002e-64.0301e-73.1663e-84.3907e-935.4324
ERBM IVEHE7.6908e-71.6067e-78.8891e-82.6735e-81.5358e-82.1951e-64.2855e-72.5895e-83.9100e-935.4324
ZCCA IVHHZ4.1267e-76.2356e-86.9304e-84.5298e-81.8548e-86.5994e-74.1237e-72.7072e-82.8905e-938.863
ZCCA IVHHN4.2174e-71.2214e-71.2749e-71.0305e-73.8664e-86.0485e-77.1890e-74.6548e-85.5265e-938.863
ZCCA IVHHE4.9683e-71.2710e-71.3618e-71.0315e-73.7280e-86.4910e-77.2235e-74.6907e-83.8928e-938.863
MAIM GUHHZ6.5510e-79.9933e-87.6276e-83.4820e-81.5442e-82.2439e-65.7066e-72.2440e-82.7588e-941.6197
MAIM GUHHN1.0305e-61.6534e-71.0850e-74.3356e-82.1433e-83.8344e-66.1027e-73.5399e-84.7981e-941.6197
MAIM GUHHE1.4236e-61.9941e-71.2062e-75.1991e-82.5303e-84.1394e-68.9566e-73.6609e-83.9109e-941.6197
EQUI GUHHZ6.6072e-78.8772e-84.7858e-82.5364e-82.2812e-81.6625e-62.1672e-73.1710e-82.3284e-943.4261
EQUI GUHHN5.2877e-77.2865e-83.2846e-83.2988e-83.4859e-81.1200e-61.5379e-73.4962e-82.5560e-943.4261
EQUI GUHHE4.9097e-71.7662e-79.5765e-81.8261e-71.9866e-71.1759e-64.3737e-72.2463e-71.9879e-843.4261
PII IVHHZ5.1614e-77.1275e-84.2150e-81.3865e-87.0059e-99.4691e-71.7460e-71.0711e-81.5696e-959.8188
PII IVHHN3.7228e-71.0193e-75.4874e-81.9418e-81.0221e-81.4993e-63.1030e-71.2360e-81.9419e-959.8188
PII IVHHE4.5346e-78.2714e-86.5406e-82.4022e-81.2893e-81.1108e-63.2711e-71.7402e-82.2075e-959.8188
*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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