MANUAL Location - Area: Garfagnana , magnitude (ML): 1.0
2025-08-07 14:04:50 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-08 09:00:44

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Earthquake info - Manual location
Event - ID :250807140425
Magnitude (ML) :1.0 +/- 0.1
Origin Time :2025-08-07 14:04:50.231 (UTC)
Location : Latitude: 44.164 N, Longitude: 10.335 E
Area :Garfagnana
Depth (km) :4.91
Distances (km) : 0.5 --- Camporgiano
1.3 --- San Romano in Garfagnana
3.8 --- Piazza al Serchio
4.7 --- Careggine
5.0 --- Villa Collemandina
6.2 --- Castiglione di Garfagnana
6.7 --- Vagli Sotto
7.0 --- Pieve Fosciana
7.2 --- Sillano
8.5 --- Castelnuovo di Garfagnana
8.8 --- Giuncugnano
10.1 --- Minucciano
11.3 --- Fosciandora
12.0 --- Molazzana
13.0 --- Vergemoli
13.4 --- Casola in Lunigiana
13.9 --- Gallicano
15.6 --- Barga
17.2 --- Ligonchio
18.6 --- Stazzema

Quality location estimate: Erh: 0.6 km, Erz: 0.9 km, Nf: 24, Gap: 89 °, Rms: 0.28


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.
VLCMN2025-08-07 14:04:51.7300.00600.021.972025-08-07 14:04:52.4000.0170-0.400.236.9
SARMGU2025-08-07 14:04:51.6600.0050-0.570.592025-08-07 14:04:52.5600.0170-1.160.308.3
EQUIGU2025-08-07 14:04:53.3200.01000.021.982025-08-07 14:04:55.4860.0501-0.041.7715.4
FIVIGU2025-08-07 14:04:54.0200.0200-0.061.672025-08-07 14:04:56.8360.0400-0.001.8319.3
CARDGU2025-08-07 14:04:54.4200.01300.400.322025-08-07 14:04:57.0300.06210.220.7120.0
GSCLGU2025-08-07 14:04:55.8170.0200-0.550.602025-08-07 14:04:59.7100.0802-1.160.2929.5
MAIMGU2025-08-07 14:04:56.0000.0623-0.091.362025-08-07 14:05:00.4800.09720.041.4031.0
POPMGU2025-08-07 14:04:57.0500.0190-0.011.872025-08-07 14:05:02.1980.23360.041.0336.6
PLMAIV2025-08-07 14:04:57.8500.02810.081.462025-08-07 14:05:02.8600.1293-0.480.5140.7
GRAMGU2025-08-07 14:04:58.0220.0200-0.011.802025-08-07 14:05:03.7200.04000.270.7342.6
PIIIV2025-08-07 14:04:59.2600.0200-0.620.492025-08-07 14:05:06.0800.1604-1.030.2751.6
MSSAIV2025-08-07 14:05:02.6800.03410.320.562025-08-07 14:05:10.3500.2056-1.070.2767.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
VLC MNHH0.951.11e+06.997
SARM GUEH1.021.59e+08.367
EQUI GUHH0.812.72e-115.4271
FIVI GUHN0.851.99e-119.3297
CARD GUHH1.052.94e-120.0142
GSCL GUHH1.212.07e-129.544
MAIM GUHH1.191.61e-131.0156
POPM GUHH0.941.51e-136.6111
PLMA IVHH0.875.01e-240.7252
GRAM GUHH1.031.24e-142.6330
PII IVHH1.085.15e-251.6163
MSSA IVHH0.841.71e-267.5285


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.
(°)
VLC MNHHZ8.5528e-51.0524e-54.2461e-61.2219e-67.0194e-71.1563e-41.6917e-51.2126e-62.3837e-76.997
VLC MNHHN9.5680e-52.1003e-58.3569e-63.2453e-62.0840e-62.2644e-43.4827e-53.3232e-65.6258e-76.997
VLC MNHHE1.0254e-41.4559e-55.4083e-61.8073e-61.2236e-62.6234e-42.1357e-52.1269e-64.0237e-76.997
SARM GUEHZ7.5782e-51.0124e-54.6241e-61.5585e-69.9657e-71.6749e-42.5360e-51.6431e-63.0822e-78.367
SARM GUEHN1.0618e-42.2905e-51.1198e-54.4309e-62.3304e-61.9972e-45.2448e-53.3427e-65.7422e-78.367
SARM GUEHE1.0344e-41.4072e-55.8295e-62.5199e-61.1628e-61.6624e-43.2725e-51.8521e-63.2293e-78.367
EQUI GUHHZ7.2444e-58.9176e-61.7380e-65.4235e-72.8854e-78.8340e-58.3102e-65.2924e-71.5286e-715.4271
EQUI GUHHN4.9493e-57.2233e-61.9225e-65.9435e-73.3078e-78.8092e-51.0114e-55.0861e-71.3570e-715.4271
EQUI GUHHE9.5443e-51.1049e-51.8185e-64.8593e-72.9822e-78.5821e-56.9486e-66.4925e-71.7105e-715.4271
FIVI GUHNZ4.0466e-53.9643e-61.3457e-65.0186e-72.3548e-75.4469e-54.8533e-63.8389e-78.4639e-819.3297
FIVI GUHNN3.3685e-53.3095e-61.9439e-65.8720e-72.5976e-75.7846e-59.4523e-64.6931e-79.2280e-819.3297
FIVI GUHNE4.1406e-54.1595e-61.4192e-64.2579e-72.0760e-76.8744e-58.8186e-63.8943e-79.3261e-819.3297
CARD GUHHZ2.8006e-53.8630e-61.0709e-64.0233e-71.6694e-76.9467e-53.7377e-62.8766e-78.2554e-820.0142
CARD GUHHN6.4679e-56.2463e-62.0835e-65.3787e-73.1583e-71.4966e-46.6092e-65.6400e-71.2913e-720.0142
CARD GUHHE5.5197e-55.8446e-62.3993e-65.5472e-72.9843e-71.4533e-48.5860e-65.6796e-71.2517e-720.0142
GSCL GUHHZ3.5654e-67.3630e-75.7099e-73.0482e-71.7351e-71.3534e-52.9174e-62.1044e-71.8449e-829.544
GSCL GUHHN6.3968e-62.0633e-61.7688e-68.6680e-73.6807e-72.1818e-58.9056e-64.8976e-75.8803e-829.544
GSCL GUHHE4.3339e-61.2111e-61.2863e-66.1133e-72.0807e-71.6274e-56.5961e-62.8262e-73.8491e-829.544
MAIM GUHHZ5.2734e-69.1347e-75.9354e-73.1350e-71.3037e-71.4500e-52.0376e-61.7897e-72.5425e-831.0156
MAIM GUHHN1.0962e-51.6757e-61.1413e-64.9562e-72.4189e-73.3221e-56.2052e-63.3708e-74.6519e-831.0156
MAIM GUHHE7.1862e-61.4350e-61.0428e-63.8380e-71.9567e-71.8152e-56.7077e-62.5388e-73.3205e-831.0156
POPM GUHHZ2.8967e-52.9875e-68.1714e-71.9968e-71.1744e-73.4414e-52.9215e-61.8708e-73.6085e-836.6111
POPM GUHHN1.4828e-52.3501e-61.3336e-63.2647e-71.7805e-73.8006e-54.1327e-62.8204e-75.7008e-836.6111
POPM GUHHE1.2984e-52.1767e-61.4377e-63.1101e-71.5645e-73.6066e-57.2709e-62.6555e-75.2891e-836.6111
PLMA IVHHZ5.6682e-66.3266e-72.2530e-71.1523e-78.2984e-87.3965e-67.8795e-71.2483e-71.2673e-840.7252
PLMA IVHHN7.0049e-68.6741e-73.6771e-71.8547e-71.5144e-71.7446e-51.4305e-61.7560e-71.8705e-840.7252
PLMA IVHHE9.2800e-68.2493e-73.0323e-72.4058e-72.3822e-79.4555e-61.1894e-63.4485e-71.9071e-840.7252
GRAM GUHHZ6.7164e-68.4376e-74.3471e-71.1582e-75.9324e-81.0866e-51.7087e-69.5019e-81.7288e-842.6330
GRAM GUHHN8.6679e-61.9635e-61.1648e-63.5902e-71.9477e-72.2845e-57.1452e-62.9418e-75.3366e-842.6330
GRAM GUHHE7.6276e-61.3500e-69.9337e-72.9052e-71.2564e-71.4356e-54.6385e-61.7632e-73.5534e-842.6330
PII IVHHZ2.6647e-67.9610e-74.6279e-71.3120e-76.6828e-86.1223e-62.3963e-61.0011e-71.8427e-851.6163
PII IVHHN2.7782e-65.5842e-73.6990e-79.8096e-84.5258e-87.0971e-62.3169e-66.5988e-81.1892e-851.6163
PII IVHHE3.0899e-67.1146e-75.0117e-71.3968e-77.1230e-88.2983e-62.3212e-61.0557e-71.8433e-851.6163
MSSA IVHHZ6.8287e-71.1314e-78.5377e-83.4330e-82.1623e-82.8558e-66.3030e-73.0199e-82.9657e-967.5285
MSSA IVHHN1.4912e-62.9213e-71.7476e-75.6682e-82.3707e-83.9337e-65.6274e-73.8154e-86.8152e-967.5285
MSSA IVHHE7.5923e-71.5788e-71.1559e-75.1602e-82.6297e-82.4534e-65.6002e-72.9414e-84.9929e-967.5285
*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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