MANUAL Location - Area: Langhe , magnitude (ML): 1.0
2025-03-31 10:28:24 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-03-31 16:57:37

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Earthquake info - Manual location
Event - ID :250331102654
Magnitude (ML) :1.0 +/- 0.2
Origin Time :2025-03-31 10:28:24.62 (UTC)
Location : Latitude: 44.619 N, Longitude: 8.302 E
Area :Langhe
Depth (km) :8.12
Distances (km) : 3.2 --- Denice
3.7 --- Roccaverano
3.8 --- Monastero Bormida
4.9 --- San Giorgio Scarampi
5.0 --- Bubbio
5.0 --- Ponti
5.7 --- Olmo Gentile
5.8 --- Mombaldone
5.9 --- Cessole
6.3 --- Vesime
6.4 --- Sessame
6.6 --- Montechiaro d Acqui
6.6 --- Loazzolo
7.1 --- Bistagno
7.3 --- Castelletto d Erro
7.4 --- Perletto
7.8 --- Cassinasco
7.9 --- Serole
8.6 --- Spigno Monferrato
9.4 --- Castino

Quality location estimate: Erh: 0.7 km, Erz: 0.8 km, Nf: 26, Gap: 83 °, Rms: 0.19


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.
ACQIT2025-03-31 10:28:28.1850.0200-0.011.842025-03-31 10:28:30.4730.0400-0.190.9016.7
PCPGU2025-03-31 10:28:29.1200.03310.011.802025-03-31 10:28:32.1850.0400-0.041.6622.9
ROTMGU2025-03-31 10:28:30.4380.0200-0.011.802025-03-31 10:28:34.8660.04000.220.9827.2
QLNOIV2025-03-31 10:28:31.0850.02000.041.682025-03-31 10:28:35.5050.0400-0.111.3534.1
RNCAGU2025-03-31 10:28:34.4660.02000.061.542025-03-31 10:28:41.8190.04000.420.6754.6
GBOSGU2025-03-31 10:28:35.4680.02000.910.092025-03-31 10:28:41.6160.04000.250.9956.5
ROROGU2025-03-31 10:28:35.1350.02000.290.812025-03-31 10:28:42.4600.04000.380.7460.0
MGROGU2025-03-31 10:28:37.8600.0200-0.081.422025-03-31 10:28:46.7210.0400-0.680.2675.8
ENRGU2025-03-31 10:28:39.6900.07130.430.642025-03-31 10:28:49.1740.0400-0.290.8483.0
BHBGU2025-03-31 10:28:39.4800.0743-0.051.382025-03-31 10:28:49.6490.0400-0.390.6585.9
STVGU2025-03-31 10:28:40.5250.09340.410.702025-03-31 10:28:50.3460.0400-0.600.3688.4
PZZGU2025-03-31 10:28:40.8990.0200-0.181.112025-03-31 10:28:52.2000.0400-0.570.4295.3
TURFFR2025-03-31 10:28:43.3470.02000.720.272025-03-31 10:28:55.2510.04000.091.09102.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
ACQ ITHN1.327.66e-116.761
ROTM GUHH0.773.38e-127.29
QLNO IVHH0.745.32e-234.1174
RNCA GUHH0.711.96e-254.6108
GBOS GUHH1.132.49e-256.5221
RORO GUHH1.043.46e-260.0199
MGRO GUHH0.971.75e-275.8212
BHB GUHH1.373.03e-285.9287
STV GUHH1.221.50e-288.4242
PZZ GUHH1.062.19e-295.3263
TURF FRHH0.958.48e-3102.2226


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.
(°)
ACQ ITHNZ5.2626e-56.3342e-61.7150e-65.0888e-73.0195e-71.0286e-44.9902e-66.3453e-71.4308e-716.761
ACQ ITHNN8.2182e-51.3774e-55.1772e-61.2410e-67.3417e-72.2541e-41.5309e-51.3470e-62.8278e-716.761
ACQ ITHNE9.6818e-51.5329e-56.3380e-61.8622e-61.0952e-61.7081e-42.0693e-51.8548e-63.8103e-716.761
PCP GUHHZ1.4174e-51.5853e-66.2663e-72.0254e-71.3278e-72.9096e-52.4873e-61.9263e-72.8972e-822.9114
PCP GUHHN9.5409e-61.1493e-65.0207e-72.0871e-79.1496e-81.6055e-51.9432e-61.3773e-72.3360e-822.9114
PCP GUHHE1.5988e-51.6462e-64.7415e-71.7891e-79.3672e-82.3193e-51.7298e-61.3896e-72.6240e-822.9114
ROTM GUHHZ8.7905e-69.4477e-78.2954e-74.8242e-71.7239e-71.2466e-53.3763e-62.3211e-72.5631e-827.29
ROTM GUHHN3.0511e-55.6884e-62.9062e-61.2435e-65.7028e-75.5167e-51.0722e-57.8905e-71.0139e-727.29
ROTM GUHHE1.4106e-52.4192e-62.1537e-61.4377e-65.0286e-72.8300e-59.7523e-66.0060e-77.0397e-827.29
QLNO IVHHZ9.2734e-61.4718e-64.3102e-71.7004e-78.5448e-81.1696e-51.9057e-61.2153e-71.9167e-834.1174
QLNO IVHHN9.1315e-61.1702e-64.2764e-71.1871e-76.1607e-81.5871e-51.6512e-61.2115e-72.2020e-834.1174
QLNO IVHHE9.0244e-61.3444e-64.4897e-71.6596e-77.4304e-81.1550e-51.6959e-61.1719e-71.7611e-834.1174
RNCA GUHHZ1.2014e-61.7809e-71.0637e-75.5542e-83.5129e-81.8523e-67.5654e-74.9520e-83.7375e-954.6108
RNCA GUHHN5.2186e-71.3251e-71.0314e-74.9461e-83.1003e-81.5018e-65.2012e-73.4786e-84.2676e-954.6108
RNCA GUHHE1.3016e-62.0087e-71.7953e-75.9972e-83.3106e-82.1427e-61.2527e-64.2644e-86.9160e-954.6108
GBOS GUHHZ2.4460e-63.2002e-71.7178e-74.9688e-82.4276e-87.3159e-68.2515e-73.7686e-86.6275e-956.5221
GBOS GUHHN2.7883e-64.0036e-72.2080e-71.2772e-77.6592e-86.9639e-61.0503e-69.8293e-88.0554e-956.5221
GBOS GUHHE2.2946e-64.2621e-71.9409e-74.2093e-82.4171e-89.2684e-66.2345e-74.3097e-89.4721e-956.5221
RORO GUHHZ4.1638e-65.3859e-71.4699e-73.7866e-82.6951e-87.1301e-64.6541e-75.7744e-88.9912e-960.0199
RORO GUHHN3.6925e-64.4779e-72.3882e-75.4014e-82.9132e-86.7603e-68.2827e-74.7061e-89.4868e-960.0199
RORO GUHHE5.6681e-66.7507e-72.5826e-77.8798e-84.0709e-87.4763e-69.6774e-76.8157e-81.3831e-860.0199
MGRO GUHHZ6.6918e-71.4792e-79.0567e-84.2638e-81.9900e-81.3278e-66.1879e-72.7923e-83.1822e-975.8212
MGRO GUHHN1.1315e-61.9965e-71.3832e-76.1029e-82.7465e-83.2976e-66.8571e-73.3446e-84.9750e-975.8212
MGRO GUHHE2.0191e-62.6917e-71.3963e-75.8154e-82.4314e-84.3826e-65.7767e-73.6028e-86.0404e-975.8212
ENR GUHHZ7.2355e-65.6878e-72.4135e-75.6220e-83.3730e-88.2811e-69.8067e-76.6171e-81.1343e-883.0239
ENR GUHHN1.6838e-51.8571e-64.9046e-71.1370e-76.5191e-82.4839e-51.5175e-61.3760e-73.8493e-883.0239
ENR GUHHE2.5442e-52.1046e-63.8984e-71.0685e-76.3518e-82.3322e-51.1497e-61.5060e-73.5657e-883.0239
BHB GUHHZ2.2092e-62.4698e-71.7595e-75.4209e-83.5451e-83.8320e-67.2240e-75.5104e-87.3196e-985.9287
BHB GUHHN2.0021e-63.5682e-72.3540e-71.0066e-73.4856e-85.8500e-61.2938e-64.2335e-87.4509e-985.9287
BHB GUHHE2.6854e-65.3915e-72.6565e-78.7551e-84.3076e-85.0707e-69.4030e-75.9929e-81.0254e-885.9287
STV GUHHZ1.5252e-61.8511e-71.0754e-73.1756e-81.7048e-83.0669e-65.3667e-72.7441e-84.7043e-988.4242
STV GUHHN1.0721e-61.8221e-78.2508e-82.7104e-81.5329e-82.2821e-63.5349e-72.9066e-83.6174e-988.4242
STV GUHHE1.5582e-62.4410e-71.2703e-73.2338e-81.7087e-84.7100e-65.8155e-73.0723e-85.5728e-988.4242
PZZ GUHHZ1.4224e-63.2225e-72.2621e-75.1981e-83.2895e-84.7282e-61.0305e-65.4329e-87.6488e-995.3263
PZZ GUHHN1.3299e-62.1814e-71.7147e-77.0283e-83.4127e-83.6152e-68.4251e-74.5669e-84.6431e-995.3263
PZZ GUHHE1.2067e-62.6761e-72.1815e-75.3799e-83.2619e-83.6357e-69.6677e-75.2060e-87.1848e-995.3263
TURF FRHHZ5.1026e-78.5067e-87.0237e-83.1220e-81.9578e-89.8658e-75.3350e-72.8325e-82.2579e-9102.2226
TURF FRHHN9.3173e-71.6781e-78.0370e-83.0702e-82.2221e-83.0994e-63.7051e-73.5078e-84.2526e-9102.2226
TURF FRHHE5.2624e-79.5505e-87.4453e-83.4820e-82.9829e-81.3063e-66.0532e-74.6947e-83.1018e-9102.2226
*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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