MANUAL Location - Area: Lunigiana , magnitude (ML): 0.8
2025-09-29 18:37:02 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-30 06:50:46

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Earthquake info - Manual location
Event - ID :250929183641
Magnitude (ML) :0.8 +/- 0.2
Origin Time :2025-09-29 18:37:02.197 (UTC)
Location : Latitude: 44.355 N, Longitude: 9.959 E
Area :Lunigiana
Depth (km) :11.12
Distances (km) : 3.2 --- Filattiera
5.1 --- Bagnone
6.6 --- Pontremoli
6.9 --- Mulazzo
7.0 --- Villafranca in Lunigiana
11.7 --- Licciana Nardi
12.5 --- Tresana
14.6 --- Monchio delle Corti
15.2 --- Comano
15.5 --- Zeri
15.7 --- Aulla
15.8 --- Calice al Cornoviglio
16.3 --- Podenzana
16.9 --- Corniglio
17.5 --- Berceto
18.4 --- Fivizzano
18.8 --- Zignago
19.1 --- Bolano
19.7 --- Rocchetta di Vara
20.6 --- Palanzano

Quality location estimate: Erh: 0.5 km, Erz: 0.4 km, Nf: 30, Gap: 71 °, Rms: 0.22


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.
AULIT2025-09-29 18:37:06.1010.02000.280.902025-09-29 18:37:07.8830.0400-0.530.5619.8
GRAMGU2025-09-29 18:37:06.1200.01000.011.832025-09-29 18:37:08.8200.06110.001.7021.1
VRLIT2025-09-29 18:37:07.0520.0200-0.580.582025-09-29 18:37:10.9270.0400-0.670.4528.5
EQUIGU2025-09-29 18:37:07.4340.0200-0.101.362025-09-29 18:37:11.3290.0842-0.021.5328.5
BVTIT2025-09-29 18:37:07.6720.0200-0.051.692025-09-29 18:37:11.7110.04000.041.6328.6
CARIT2025-09-29 18:37:08.2890.02000.310.832025-09-29 18:37:12.2200.0400-0.031.5731.8
PLMAIV2025-09-29 18:37:09.0100.01800.081.552025-09-29 18:37:13.4300.1103-0.540.5236.7
MSSAIV2025-09-29 18:37:09.2900.02310.211.092025-09-29 18:37:14.1600.1123-0.141.1137.4
ERBMIV2025-09-29 18:37:09.7800.01900.001.752025-09-29 18:37:15.6800.11430.221.1138.6
SARMGU2025-09-29 18:37:10.0700.02510.031.722025-09-29 18:37:15.4090.1233-0.430.5741.8
VLCMN2025-09-29 18:37:10.0380.02000.231.052025-09-29 18:37:15.5550.18950.151.1742.0
CMEIT2025-09-29 18:37:09.3770.0200-2.500.002025-09-29 18:37:18.0360.0400-0.920.1653.5
MAIMGU2025-09-29 18:37:14.2340.02000.470.312025-09-29 18:37:22.1900.0400-0.031.2866.0
RNCAGU2025-09-29 18:37:17.8050.02001.620.002025-09-29 18:37:26.4000.24760.190.9381.8
PIIIV2025-09-29 18:37:16.8020.0200-0.270.702025-09-29 18:37:27.2110.0400-0.760.3684.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
GRAM GUHH0.792.71e-121.129
EQUI GUHH0.575.12e-228.5144
BVT ITHN1.242.36e-128.6319
CAR ITHN0.971.03e-131.8246
PLMA IVHH0.865.92e-236.7194
MSSA IVHH0.603.25e-237.4263
ERBM IVEH0.835.20e-238.679
SARM GUEH0.593.06e-241.8118
VLC MNHH0.381.10e-242.0123
MAIM GUHH0.761.30e-266.0139
RNCA GUHH1.001.59e-281.8279
PII IVHH0.789.05e-384.4147


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.
(°)
GRAM GUHHZ7.4298e-61.1189e-69.6940e-73.1200e-71.5626e-71.6700e-53.0827e-62.1697e-73.4241e-821.129
GRAM GUHHN1.2721e-52.8463e-62.4137e-61.0365e-64.2451e-73.1676e-51.4650e-55.0396e-78.3751e-821.129
GRAM GUHHE1.3635e-53.6134e-62.4402e-67.7992e-73.4054e-72.5729e-51.0982e-54.5512e-78.7917e-821.129
EQUI GUHHZ3.3460e-64.7547e-73.1547e-71.0210e-74.9249e-86.5851e-61.4181e-67.1220e-81.0559e-828.5144
EQUI GUHHN4.7302e-65.7525e-74.1205e-71.4923e-77.4388e-89.4530e-62.2327e-68.8627e-81.5229e-828.5144
EQUI GUHHE7.3412e-67.9566e-74.2103e-71.1201e-76.0168e-81.2095e-52.1500e-68.6345e-81.6923e-828.5144
BVT ITHNZ3.2777e-67.3989e-75.3731e-72.5869e-71.2405e-75.2565e-62.9043e-61.3043e-71.9740e-828.6319
BVT ITHNN1.1905e-53.2976e-61.8525e-65.5696e-73.1207e-72.6742e-51.0250e-54.8960e-77.5086e-828.6319
BVT ITHNE1.5494e-53.5486e-61.9444e-65.1945e-72.5910e-74.2705e-56.9196e-64.2086e-78.4187e-828.6319
CAR ITHNZ5.9995e-67.5776e-74.3846e-72.9771e-71.7653e-71.2728e-51.7952e-62.6567e-71.5619e-831.8246
CAR ITHNN1.4748e-52.0946e-69.4868e-74.3941e-72.1816e-73.2253e-53.1390e-63.1669e-74.5143e-831.8246
CAR ITHNE1.1801e-51.6257e-66.7311e-74.0065e-71.9126e-71.9203e-52.4614e-62.8170e-74.2015e-831.8246
PLMA IVHHZ4.3468e-67.5527e-73.3925e-71.5103e-76.7918e-86.8098e-61.7292e-61.0167e-71.7509e-836.7194
PLMA IVHHN8.2666e-61.2010e-65.1683e-71.5408e-77.9353e-81.8035e-52.9029e-61.2148e-72.3827e-836.7194
PLMA IVHHE5.4921e-68.9495e-75.3644e-71.3658e-76.8143e-81.0254e-52.7108e-69.8579e-81.9301e-836.7194
MSSA IVHHZ1.6362e-62.8858e-71.3225e-76.8930e-82.8322e-85.6747e-65.6038e-73.4777e-85.4746e-937.4263
MSSA IVHHN2.1762e-64.6025e-72.9652e-71.2830e-75.2859e-87.7628e-61.1475e-67.8766e-81.1554e-837.4263
MSSA IVHHE1.3935e-63.3017e-72.4303e-79.7895e-84.8516e-84.5232e-61.3539e-67.4780e-89.2122e-937.4263
ERBM IVEHZ1.2744e-63.1977e-72.1294e-79.8172e-85.3169e-84.1449e-61.0762e-67.1039e-89.3542e-938.679
ERBM IVEHN1.8777e-65.1462e-74.4310e-71.2656e-76.5092e-84.5774e-63.0482e-69.5853e-81.4528e-838.679
ERBM IVEHE1.9868e-64.3858e-72.8462e-71.1059e-76.6251e-85.9384e-61.4490e-69.7670e-81.2280e-838.679
SARM GUEHZ8.6258e-71.4899e-71.4310e-74.0883e-82.1523e-82.3631e-61.2239e-63.2161e-84.6861e-941.8118
SARM GUEHN1.3809e-63.5002e-72.7220e-71.0766e-74.7496e-82.4109e-61.4989e-66.2881e-89.3237e-941.8118
SARM GUEHE1.4427e-62.1856e-71.8584e-77.2867e-83.3118e-83.6147e-61.3749e-64.1430e-84.9486e-941.8118
VLC MNHHZ1.0969e-61.5099e-77.1933e-82.3566e-81.1648e-82.6651e-64.3220e-71.7634e-83.4628e-942.0123
VLC MNHHN1.1956e-61.5924e-71.0698e-73.5872e-81.8032e-82.7498e-65.9334e-72.1442e-83.7292e-942.0123
VLC MNHHE1.4691e-61.6453e-79.3080e-83.4141e-82.0494e-82.7515e-66.5879e-72.7372e-83.8620e-942.0123
CME ITHNZ3.9349e-65.3179e-73.6753e-73.8219e-74.0567e-76.6863e-61.8522e-65.9817e-73.6989e-853.5148
CME ITHNN6.3751e-68.3106e-77.1583e-73.1204e-71.9617e-71.0154e-54.7977e-62.1348e-72.2531e-853.5148
CME ITHNE6.7797e-61.0851e-67.2626e-72.7235e-71.7268e-71.3014e-55.0591e-62.4449e-72.6240e-853.5148
MAIM GUHHZ6.4451e-71.0301e-77.6081e-84.4875e-81.7223e-81.6876e-64.8133e-71.9257e-82.3786e-966.0139
MAIM GUHHN1.0954e-61.4158e-71.0992e-75.4924e-82.6019e-82.8130e-65.9079e-72.9896e-83.1754e-966.0139
MAIM GUHHE9.5233e-71.6234e-71.0600e-76.4789e-82.3562e-82.5426e-65.3950e-72.8657e-83.7574e-966.0139
RNCA GUHHZ8.3609e-71.3113e-79.8119e-84.4071e-82.1054e-82.1176e-64.9183e-72.6060e-83.3799e-981.8279
RNCA GUHHN7.6277e-71.3112e-71.1097e-74.2597e-81.9408e-82.0667e-67.1313e-72.6757e-83.5543e-981.8279
RNCA GUHHE1.0941e-62.3585e-71.7270e-75.9157e-82.2824e-83.2363e-66.9547e-73.4137e-86.0249e-981.8279
PII IVHHZ4.9135e-77.6043e-86.8069e-82.1447e-87.9070e-91.2068e-63.7501e-71.1848e-81.7920e-984.4147
PII IVHHN5.3212e-71.2628e-71.0963e-74.8923e-81.4338e-81.1229e-67.0673e-72.2189e-82.7902e-984.4147
PII IVHHE5.5110e-71.1669e-78.0924e-83.6983e-81.6963e-82.2472e-63.3564e-72.3301e-82.6480e-984.4147
*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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