MANUAL Location - Area: Lunigiana , magnitude (ML): 1.3
2025-11-16 00:09:17 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-11-17 07:51:54

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Earthquake info - Manual location
Event - ID :251116000824
Magnitude (ML) :1.3 +/- 0.2
Origin Time :2025-11-16 00:09:17.336 (UTC)
Location : Latitude: 44.304 N, Longitude: 9.798 E
Area :Lunigiana
Depth (km) :56.96
Distances (km) : 5.0 --- Zignago
6.1 --- Zeri
6.6 --- Rocchetta di Vara
7.3 --- Calice al Cornoviglio
7.4 --- Mulazzo
9.4 --- Brugnato
9.9 --- Sesta Godano
10.6 --- Borghetto di Vara
10.7 --- Pontremoli
11.4 --- Filattiera
11.5 --- Carro
12.2 --- Villafranca in Lunigiana
12.2 --- Beverino
13.2 --- Carrodano
13.6 --- Tresana
14.9 --- Bolano
15.1 --- Pignone
15.6 --- Podenzana
15.7 --- Bagnone
16.4 --- Follo

Quality location estimate: Erh: 1.8 km, Erz: 1.4 km, Nf: 20, Gap: 136 °, 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.
VRLIT2025-11-16 00:09:26.7310.02000.031.472025-11-16 00:09:33.4860.04000.041.2559.3
MSSAIV2025-11-16 00:09:26.8270.0200-0.031.472025-11-16 00:09:33.7000.2136-0.031.0062.1
GRAMGU2025-11-16 00:09:27.5900.0301-0.021.452025-11-16 00:09:35.0040.1975-0.120.9465.0
EQUIGU2025-11-16 00:09:28.1830.02000.680.212025-11-16 00:09:35.5280.04000.640.2665.7
SARMGU2025-11-16 00:09:29.2490.02000.081.322025-11-16 00:09:37.5870.0400-0.240.7976.5
GORRGU2025-11-16 00:09:29.1500.0412-0.021.392025-11-16 00:09:38.1400.23360.320.7077.8
CARDGU2025-11-16 00:09:30.1650.02000.131.152025-11-16 00:09:39.7620.42990.370.5985.0
RNCAGU2025-11-16 00:09:30.2700.0412-0.091.242025-11-16 00:09:39.7800.27170.190.8090.2
MAIMGU2025-11-16 00:09:30.9300.0422-0.071.282025-11-16 00:09:41.0400.2747-0.100.8190.7
PIIIV2025-11-16 00:09:33.1500.05320.051.242025-11-16 00:09:44.5800.3107-0.270.63104.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MSSA IVHH0.982.78e-262.1274
GRAM GUHH1.238.12e-265.046
GORR GUHH1.576.64e-277.8310
CARD GUHH1.443.99e-285.0119
RNCA GUHH1.202.00e-290.2286
MAIM GUHH1.191.73e-290.7128
PII IVHH1.251.63e-2104.0138


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.
(°)
MSSA IVHHZ1.3840e-62.0123e-79.5750e-83.6700e-83.5412e-83.8825e-64.1534e-75.7727e-85.5676e-962.1274
MSSA IVHHN1.5986e-62.2646e-71.5700e-75.6248e-84.9781e-85.9441e-65.5892e-77.1894e-89.4841e-962.1274
MSSA IVHHE1.4738e-63.5846e-72.1349e-71.1300e-75.5071e-84.1472e-68.5182e-77.6505e-88.1838e-962.1274
GRAM GUHHZ5.6482e-65.6808e-73.4016e-71.4798e-74.9783e-86.0547e-61.6901e-66.7230e-81.0678e-865.046
GRAM GUHHN3.5381e-67.4003e-76.1116e-72.1066e-79.0835e-89.5685e-64.6623e-61.3142e-71.8942e-865.046
GRAM GUHHE4.1178e-61.1751e-67.8074e-73.6582e-71.3869e-79.9858e-63.1198e-61.7939e-72.8348e-865.046
EQUI GUHHZ1.0218e-69.9004e-85.3656e-82.1069e-81.5969e-82.6392e-62.1464e-71.9179e-82.9481e-965.7118
EQUI GUHHN1.1856e-61.4779e-78.5232e-83.8535e-82.2528e-82.0607e-65.1812e-72.6795e-84.0322e-965.7118
EQUI GUHHE1.2470e-61.9905e-79.5676e-82.9880e-82.2158e-84.0977e-64.8431e-73.1210e-84.9553e-965.7118
SARM GUEHZ6.8380e-71.2575e-76.7824e-82.1749e-81.3542e-82.0033e-64.7685e-72.4160e-83.5889e-976.5105
SARM GUEHN7.1213e-71.4379e-71.0515e-75.1242e-82.6753e-81.8884e-68.1477e-72.7314e-83.6941e-976.5105
SARM GUEHE7.6860e-71.0550e-77.0000e-82.7637e-81.4264e-81.6400e-63.3651e-71.6885e-83.2467e-976.5105
GORR GUHHZ3.5234e-65.0900e-73.3382e-71.0129e-74.5640e-87.8940e-61.3148e-66.1330e-81.1620e-877.8310
GORR GUHHN3.3251e-69.3740e-75.6135e-71.6181e-79.5731e-87.7822e-62.6494e-61.3842e-72.1491e-877.8310
GORR GUHHE4.9334e-69.7244e-75.8933e-72.1436e-71.0589e-71.9994e-52.0061e-61.5191e-72.5646e-877.8310
CARD GUHHZ3.4792e-64.6244e-71.2497e-73.2346e-81.9998e-88.4651e-65.7779e-74.2799e-89.4241e-985.0119
CARD GUHHN5.5469e-66.8608e-73.8209e-78.6351e-84.9046e-81.0738e-51.3242e-68.1444e-81.6169e-885.0119
CARD GUHHE4.3721e-65.7700e-73.3837e-78.7059e-84.4270e-88.2114e-61.4110e-66.9943e-81.3794e-885.0119
RNCA GUHHZ1.8356e-62.8342e-71.0788e-74.9979e-84.5745e-84.3398e-65.7059e-77.0461e-85.3642e-990.2286
RNCA GUHHN2.0409e-62.7264e-71.1847e-74.5991e-83.2175e-85.1344e-66.1950e-73.9756e-86.1641e-990.2286
RNCA GUHHE2.5824e-63.8919e-71.9726e-75.3498e-83.9156e-87.6466e-69.9039e-76.4869e-88.0293e-990.2286
MAIM GUHHZ1.1584e-61.3818e-78.3530e-82.5310e-81.4661e-81.8273e-63.4358e-72.5132e-83.6238e-990.7128
MAIM GUHHN1.2388e-62.2796e-71.7463e-74.7952e-82.2194e-83.8702e-69.0947e-73.4420e-85.3008e-990.7128
MAIM GUHHE1.3774e-61.9208e-71.2211e-74.0582e-82.0016e-83.9407e-66.1065e-72.9950e-83.8799e-990.7128
PII IVHHZ1.1919e-61.6856e-71.1777e-73.3171e-81.7056e-81.3568e-63.8796e-72.6376e-84.4700e-9104.0138
PII IVHHN7.7696e-72.3589e-71.3738e-74.3341e-82.3401e-82.0499e-66.0219e-73.4721e-85.7246e-9104.0138
PII IVHHE1.1074e-62.7265e-71.3398e-74.5495e-82.1009e-84.6012e-65.3637e-72.9346e-85.8567e-9104.0138
*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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