MANUAL Location - Area: Frignano , magnitude (ML): 0.5
2025-07-10 21:48:48 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-11 09:33:58

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Earthquake info - Manual location
Event - ID :250710214730
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2025-07-10 21:48:48.087 (UTC)
Location : Latitude: 44.235 N, Longitude: 10.215 E
Area :Frignano
Depth (km) :9.34
Distances (km) : 3.7 --- Giuncugnano
4.8 --- Casola in Lunigiana
7.1 --- Minucciano
7.1 --- Sillano
7.2 --- Fivizzano
8.7 --- Piazza al Serchio
9.4 --- Comano
12.7 --- San Romano in Garfagnana
12.8 --- Camporgiano
13.5 --- Collagna
13.7 --- Ligonchio
14.4 --- Vagli Sotto
14.4 --- Licciana Nardi
15.3 --- Careggine
16.8 --- Villa Collemandina
17.3 --- Busana
18.2 --- Castiglione di Garfagnana
19.0 --- Fosdinovo
19.3 --- Pieve Fosciana
19.7 --- Bagnone

Quality location estimate: Erh: 0.8 km, Erz: 0.6 km, Nf: 28, Gap: 90 °, Rms: 0.21


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.
FIVIGU2025-07-10 21:48:50.4080.0200-0.012.002025-07-10 21:48:52.0430.0400-0.041.8412.0
EQUIGU2025-07-10 21:48:50.7300.00800.031.922025-07-10 21:48:52.5500.0451-0.031.8613.3
VLCMN2025-07-10 21:48:51.7200.02000.041.792025-07-10 21:48:53.7900.0561-0.540.5018.9
SARMGU2025-07-10 21:48:51.6700.0100-0.300.582025-07-10 21:48:54.0510.0651-0.790.3219.0
AULIT2025-07-10 21:48:51.9850.0200-0.240.652025-07-10 21:48:55.1720.04000.001.7621.6
GRAMGU2025-07-10 21:48:54.0500.0180-0.011.942025-07-10 21:48:58.4480.15240.290.4432.5
CARDGU2025-07-10 21:48:54.0190.02000.001.932025-07-10 21:48:58.3700.0962-0.021.3833.0
CMEIT2025-07-10 21:48:54.2800.0200-0.041.832025-07-10 21:48:58.3660.0400-0.550.5333.4
GSCLGU2025-07-10 21:48:54.3600.0321-0.700.432025-07-10 21:48:58.7200.1023-1.490.0733.8
PLMAIV2025-07-10 21:48:54.9250.02000.091.172025-07-10 21:48:59.5400.1143-0.211.0236.6
MAIMGU2025-07-10 21:48:55.7530.0200-0.151.082025-07-10 21:49:00.6900.2557-1.000.2643.2
POPMGU2025-07-10 21:48:57.4670.02000.490.062025-07-10 21:49:02.9840.1484-0.590.5549.1
MSSAIV2025-07-10 21:48:58.1200.1406-0.250.942025-07-10 21:49:05.2800.3718-0.740.4857.2
PIIIV2025-07-10 21:48:59.0270.0200-0.460.552025-07-10 21:49:06.6400.1855-1.310.1362.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
FIVI GUHN0.612.70e-112.0274
VLC MNHH0.032.22e-218.9122
SARM GUEH0.205.49e-219.0111
GRAM GUHH0.597.51e-232.5337
CARD GUHH0.695.08e-233.0137
CME ITHN0.887.70e-233.4168
GSCL GUHH0.573.66e-233.867
PLMA IVHH0.613.40e-236.6235
MAIM GUHH0.249.44e-343.2148
POPM GUHH0.261.75e-249.1116
PII IVHH0.386.85e-362.9156


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 GUHNZ1.8764e-41.6499e-52.0910e-64.9549e-73.0980e-79.4555e-55.7811e-64.8039e-71.0559e-712.0274
FIVI GUHNN3.2051e-54.4510e-62.4773e-65.4408e-73.3698e-76.1147e-57.8088e-66.0735e-71.1687e-712.0274
FIVI GUHNE5.0320e-54.6599e-61.6700e-65.4238e-73.2761e-78.0222e-56.0938e-65.6764e-71.0903e-712.0274
EQUI GUHHZ1.0793e-51.1078e-62.4275e-79.4884e-85.1204e-81.1954e-51.0177e-68.2861e-81.8210e-813.3213
EQUI GUHHN1.0930e-51.1049e-62.7723e-71.9594e-71.2035e-71.4964e-51.0733e-61.7592e-72.6922e-813.3213
EQUI GUHHE2.1658e-51.8006e-63.2831e-71.0025e-75.7471e-89.1301e-61.7383e-61.2868e-73.1822e-813.3213
VLC MNHHZ3.0902e-63.8083e-71.2097e-73.9025e-81.8185e-87.4444e-64.5821e-73.3374e-87.8358e-918.9122
VLC MNHHN3.5221e-64.2548e-71.7120e-75.6695e-83.1825e-87.9351e-68.9774e-75.0541e-89.5946e-918.9122
VLC MNHHE3.3515e-63.9077e-71.5700e-74.9982e-82.5893e-89.7126e-65.8555e-74.5360e-89.2699e-918.9122
SARM GUEHZ3.4404e-64.5656e-71.9289e-76.3111e-82.9528e-85.0977e-69.7575e-74.7792e-89.9212e-919.0111
SARM GUEHN4.3345e-66.8702e-74.5504e-71.7033e-78.3172e-88.7317e-62.0613e-61.3900e-72.0528e-819.0111
SARM GUEHE5.2131e-65.2631e-72.5688e-78.1618e-83.9920e-81.1058e-51.2755e-66.6561e-81.2434e-819.0111
GRAM GUHHZ6.4298e-65.2057e-72.2420e-76.5945e-83.5054e-85.4757e-61.4961e-64.9619e-89.5527e-932.5337
GRAM GUHHN4.2356e-67.7275e-75.6676e-71.9501e-79.0862e-81.6055e-52.6229e-61.2570e-71.6771e-832.5337
GRAM GUHHE3.3446e-66.9478e-76.5207e-72.1970e-71.0726e-78.9092e-65.1164e-61.6310e-72.2752e-832.5337
CARD GUHHZ4.3324e-66.9084e-72.4974e-75.4928e-83.2801e-81.8669e-56.4360e-76.4953e-81.4863e-833.0137
CARD GUHHN8.5791e-61.0138e-63.5485e-78.2164e-85.2159e-81.6934e-51.1889e-69.7439e-82.2765e-833.0137
CARD GUHHE6.3822e-61.1154e-63.9892e-71.0282e-75.5692e-81.5710e-51.5378e-61.0239e-72.4299e-833.0137
CME ITHNZ5.6076e-68.5309e-74.8237e-73.0923e-71.8451e-78.3399e-62.1569e-62.6235e-71.7628e-833.4168
CME ITHNN8.5023e-61.2708e-67.5690e-73.0892e-71.7642e-71.8207e-52.1031e-62.2359e-73.0538e-833.4168
CME ITHNE7.2578e-61.0592e-65.5330e-73.0144e-71.5130e-71.0371e-53.6335e-61.6912e-72.5071e-833.4168
GSCL GUHHZ1.0339e-62.2414e-71.3515e-74.5437e-82.0182e-82.3957e-65.0589e-73.2551e-85.9105e-933.867
GSCL GUHHN1.7945e-64.4641e-73.4782e-71.0860e-74.7536e-83.8090e-61.7382e-66.8539e-81.0205e-833.867
GSCL GUHHE1.8684e-64.7579e-72.8567e-71.1558e-74.3269e-83.7256e-69.1977e-76.3184e-81.2226e-833.867
PLMA IVHHZ4.7808e-64.8804e-71.3764e-77.6848e-85.8976e-89.9153e-64.5116e-77.7074e-81.1172e-836.6235
PLMA IVHHN6.5738e-67.2506e-72.3440e-76.7649e-84.2298e-89.4091e-67.9651e-78.2943e-81.5638e-836.6235
PLMA IVHHE9.0719e-69.2767e-72.1373e-77.3284e-84.8816e-81.9565e-58.6836e-79.6418e-82.0486e-836.6235
MAIM GUHHZ7.4388e-79.2956e-84.7253e-82.9090e-81.4345e-81.3026e-62.9207e-71.6841e-81.7399e-943.2148
MAIM GUHHN9.9455e-71.3018e-76.9875e-85.2144e-82.6000e-81.9187e-63.3892e-72.5074e-83.1111e-943.2148
MAIM GUHHE8.5957e-71.1034e-77.0172e-84.0937e-81.8808e-81.7173e-63.3246e-72.1991e-82.9557e-943.2148
POPM GUHHZ1.3178e-61.8788e-79.4572e-83.1165e-81.5821e-83.4288e-63.8228e-72.0439e-84.3222e-949.1116
POPM GUHHN1.6464e-62.9250e-71.6618e-74.5787e-82.1415e-83.8294e-66.9067e-73.0443e-86.4247e-949.1116
POPM GUHHE2.2223e-63.2321e-71.8380e-74.4379e-82.2227e-83.9486e-66.6776e-73.6715e-86.5445e-949.1116
MSSA IVHHZ2.1626e-73.3848e-81.9830e-81.4743e-81.1788e-87.7601e-78.6819e-81.7926e-89.4939e-1057.2279
MSSA IVHHN3.4284e-74.5766e-82.9514e-81.7469e-81.3792e-86.9423e-71.3894e-71.4303e-81.3774e-957.2279
MSSA IVHHE2.6303e-74.0790e-82.6850e-81.8129e-81.0223e-85.3231e-71.0625e-71.0100e-81.0415e-957.2279
PII IVHHZ6.1086e-79.0820e-86.0743e-81.7094e-87.6135e-91.6445e-63.5023e-71.2130e-82.0841e-962.9156
PII IVHHN5.3321e-71.0010e-76.2461e-82.1003e-89.2693e-91.6643e-63.4048e-71.4550e-82.4594e-962.9156
PII IVHHE7.0448e-79.2784e-86.2700e-82.6418e-81.2084e-81.5584e-63.3342e-71.5200e-82.5104e-962.9156
*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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