MANUAL Location - Area: Appennino pistoiese , magnitude (ML): 0.4
2025-05-11 11:25:45 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-05-13 07:23:31

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Earthquake info - Manual location
Event - ID :250511112412
Magnitude (ML) :0.4 +/- 0.2
Origin Time :2025-05-11 11:25:45.84 (UTC)
Location : Latitude: 44.197 N, Longitude: 10.694 E
Area :Appennino pistoiese
Depth (km) :10.65
Distances (km) : 4.1 --- Fiumalbo
5.1 --- Riolunato
6.1 --- Abetone
6.2 --- Montecreto
6.2 --- Pievepelago
7.3 --- Sestola
8.2 --- Fanano
11.8 --- Cutigliano
12.9 --- Lama Mocogno
14.5 --- Palagano
14.7 --- Frassinoro
16.4 --- Lizzano in Belvedere
16.8 --- Polinago
17.4 --- San Marcello Pistoiese
18.6 --- Montefiorino
19.0 --- Gaggio Montano
19.1 --- Pavullo nel Frignano
19.5 --- Piteglio
20.0 --- Coreglia Antelminelli
20.6 --- Fosciandora

Quality location estimate: Erh: 1.1 km, Erz: 1.3 km, Nf: 18, Gap: 79 °, Rms: 0.15


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.
BDIIV2025-05-11 11:25:49.6270.1004-0.071.552025-05-11 11:25:52.5830.0400-0.051.7820.4
POPMGU2025-05-11 11:25:49.8400.01100.031.882025-05-11 11:25:52.8100.0611-0.041.7420.8
GSCLGU2025-05-11 11:25:49.3330.0200-1.230.072025-05-11 11:25:52.0480.0400-2.030.0022.2
SARMGU2025-05-11 11:25:50.4900.0130-0.240.612025-05-11 11:25:53.8850.0762-0.540.1226.1
VLCMN2025-05-11 11:25:50.8800.0140-0.002.072025-05-11 11:25:54.7300.07620.051.4127.3
CARDGU2025-05-11 11:25:50.9200.01400.012.052025-05-11 11:25:55.0660.29970.330.4927.7
ZCCAIV2025-05-11 11:25:52.3600.0160-0.031.922025-05-11 11:25:58.2870.04000.830.0330.5
MAIMGU2025-05-11 11:25:52.3760.0200-0.250.612025-05-11 11:25:57.5900.1103-0.041.3637.1
SEIIV2025-05-11 11:25:55.5100.1004-0.810.132025-05-11 11:26:03.5100.1715-0.980.1856.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
BDI IVHH0.275.98e-220.4207
POPM GUHH0.351.12e-120.8163
GSCL GUHH0.466.35e-222.2334
SARM GUEH0.082.34e-226.1267
VLC MNHH0.402.67e-227.3260
CARD GUHH0.555.15e-227.7222
ZCCA IVHH0.111.55e-230.553
MAIM GUHH0.431.99e-237.1207
SEI IVHH0.882.69e-256.5106


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.
(°)
BDI IVHHZ1.2805e-51.0851e-62.9247e-78.4838e-84.3265e-81.1103e-51.5135e-68.2332e-81.4959e-820.4207
BDI IVHHN1.2091e-51.2504e-63.7936e-71.2792e-75.4565e-81.1345e-51.9849e-61.0157e-72.8770e-820.4207
BDI IVHHE9.2783e-61.2393e-64.9303e-71.9971e-71.2980e-72.0870e-52.5547e-62.0029e-72.6359e-820.4207
POPM GUHHZ4.8473e-69.6114e-75.9826e-72.6820e-71.1366e-71.6933e-53.5508e-61.6207e-72.2847e-820.8163
POPM GUHHN7.2739e-61.0552e-67.5626e-73.5565e-71.6656e-71.3721e-54.4089e-62.2886e-73.0851e-820.8163
POPM GUHHE6.7750e-61.6061e-69.8352e-73.4321e-71.4116e-72.3818e-56.5178e-62.0610e-73.5995e-820.8163
GSCL GUHHZ2.4554e-63.9104e-72.3771e-77.2908e-83.7252e-86.9807e-68.4760e-75.2728e-89.4431e-922.2334
GSCL GUHHN4.9702e-68.8775e-76.1657e-71.9302e-71.1177e-71.9796e-52.9941e-61.7450e-72.3714e-822.2334
GSCL GUHHE3.9873e-68.7439e-75.3350e-71.3401e-77.5542e-88.2224e-61.7582e-61.1595e-72.0075e-822.2334
SARM GUEHZ1.4238e-62.2321e-79.4784e-83.8017e-81.6558e-82.6163e-64.0475e-72.6371e-83.5832e-926.1267
SARM GUEHN2.0362e-63.0920e-71.9121e-71.0083e-73.8921e-84.3258e-67.7430e-75.8558e-88.6077e-926.1267
SARM GUEHE1.9728e-63.2334e-71.7356e-71.2360e-74.0831e-84.5964e-67.6156e-75.4924e-87.6709e-926.1267
VLC MNHHZ7.3507e-67.7984e-71.2045e-73.3375e-81.9641e-83.8327e-64.0493e-73.2239e-86.3564e-927.3260
VLC MNHHN5.0968e-64.9618e-72.1750e-76.7959e-83.3635e-81.0736e-51.0936e-65.6095e-81.0770e-827.3260
VLC MNHHE6.8323e-64.9837e-72.1197e-75.2964e-82.6244e-86.6946e-67.5815e-74.4723e-88.8965e-927.3260
CARD GUHHZ3.7031e-64.5487e-71.5577e-77.1497e-85.0805e-89.0412e-66.9985e-79.2945e-81.0817e-827.7222
CARD GUHHN9.5769e-61.0189e-62.7126e-79.3351e-86.4416e-81.2115e-51.1069e-61.0357e-71.9536e-827.7222
CARD GUHHE1.0040e-51.2372e-64.3826e-71.2330e-77.4941e-82.8500e-51.3776e-61.0587e-72.3325e-827.7222
ZCCA IVHHZ4.7934e-78.7915e-87.9080e-85.2102e-82.0269e-81.1386e-64.1326e-72.2785e-82.6730e-930.553
ZCCA IVHHN6.7209e-71.4185e-71.1499e-77.6250e-83.5313e-89.1286e-77.0816e-73.9678e-83.6414e-930.553
ZCCA IVHHE7.0829e-71.2136e-71.1138e-77.4664e-83.2588e-88.4898e-75.8957e-74.4495e-84.3197e-930.553
MAIM GUHHZ5.7989e-71.0264e-75.5159e-82.7632e-81.2459e-81.9632e-62.4057e-71.7010e-82.9857e-937.1207
MAIM GUHHN1.3933e-62.5141e-71.4872e-77.0149e-83.9051e-85.2061e-67.0859e-75.8968e-85.7778e-937.1207
MAIM GUHHE8.9441e-71.4207e-79.1524e-83.5365e-81.5649e-83.2969e-63.7570e-71.9290e-82.9610e-937.1207
SEI IVHHZ8.4330e-71.8509e-71.7872e-76.6278e-83.7651e-81.3185e-68.1482e-74.6508e-86.9800e-956.5106
SEI IVHHN6.8659e-72.6144e-72.5400e-71.4128e-75.8334e-82.2425e-61.7308e-67.1529e-87.3277e-956.5106
SEI IVHHE2.2481e-62.5681e-71.7068e-71.0678e-75.4384e-82.6854e-61.2259e-65.5639e-86.0642e-956.5106
*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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