MANUAL Location - Area: Zona Bologna , magnitude (ML): 2.0
2025-08-01 04:22:07 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-01 08:38:29

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Earthquake info - Manual location
Event - ID :250801042152
Magnitude (ML) :2.0 +/- 0.2
Origin Time :2025-08-01 04:22:07.755 (UTC)
Location : Latitude: 44.484 N, Longitude: 11.176 E
Area :Zona Bologna
Depth (km) :20.77
Distances (km) : 3.4 --- Zola Predosa
3.6 --- Monte San Pietro
5.1 --- Crespellano
6.1 --- Monteveglio
7.2 --- Anzola dell Emilia
7.7 --- Bazzano
8.1 --- Casalecchio di Reno
9.9 --- Castello di Serravalle
11.2 --- Savignano sul Panaro
11.3 --- Sasso Marconi
12.1 --- Calderara di Reno
13.1 --- Savigno
13.2 --- Bologna
13.3 --- Spilamberto
13.3 --- Vignola
14.3 --- San Cesario sul Panaro
15.8 --- Castelfranco Emilia
15.9 --- Marzabotto
16.5 --- Marano sul Panaro
17.3 --- San Giovanni in Persiceto

Quality location estimate: Erh: 3.1 km, Erz: 2.4 km, Nf: 30, Gap: 214 °, Rms: 0.36


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.
GSCLGU2025-08-01 04:22:18.6000.02710.071.432025-08-01 04:22:26.3750.1604-0.440.8853.5
POPMGU2025-08-01 04:22:19.4200.0311-0.081.412025-08-01 04:22:28.0540.0400-0.440.8662.8
SARMGU2025-08-01 04:22:21.8200.03710.361.082025-08-01 04:22:31.4000.3287-0.520.8173.4
VLCMN2025-08-01 04:22:22.7500.18281.020.352025-08-01 04:22:31.7360.0400-0.630.6275.5
CARDGU2025-08-01 04:22:21.9200.0391-0.071.412025-08-01 04:22:33.0050.04000.291.2178.0
MAIMGU2025-08-01 04:22:22.9900.0432-0.360.962025-08-01 04:22:35.4630.04000.590.8886.3
GRAMGU2025-08-01 04:22:25.5400.04620.830.562025-08-01 04:22:37.3600.3457-0.211.0690.6
EQUIGU2025-08-01 04:22:25.2470.12860.790.622025-08-01 04:22:37.3120.04000.481.0191.2
CMEIT2025-08-01 04:22:24.7120.02000.061.422025-08-01 04:22:37.4910.04000.361.1393.6
OPPEIV2025-08-01 04:22:25.4800.0472-0.091.362025-08-01 04:22:37.9440.3447-0.980.3993.9
PLMAIV2025-08-01 04:22:28.6000.0602-0.041.372025-08-01 04:22:44.1200.35170.161.09117.6
MSSAIV2025-08-01 04:22:31.7700.0683-0.021.342025-08-01 04:22:47.9610.0400-1.770.00134.8
BALDNI2025-08-01 04:22:31.9300.06930.311.192025-08-01 04:22:48.2270.0400-1.090.28138.0
GARGNI2025-08-01 04:22:32.6200.07130.401.102025-08-01 04:22:50.1150.0400-0.281.03141.7
GORRGU2025-08-01 04:22:34.8800.07730.540.942025-08-01 04:22:54.1510.0400-0.161.08151.3
DOSSST2025-08-01 04:22:32.0200.1848-1.520.002025-08-01 04:22:52.4310.04000.161.15156.6


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
VLC MNHH1.595.31e-275.5240
CARD GUHH2.192.75e-178.0228
MAIM GUHH1.818.09e-286.3221
GRAM GUHH2.032.45e-190.6271
MSSA IVHH2.116.11e-2134.8263
GORR GUHH2.327.28e-2151.3276


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.
(°)
GSCL GUHHZ2.9592e-66.7555e-75.4824e-72.8485e-71.2035e-76.6758e-63.2989e-61.3982e-71.4077e-853.5253
GSCL GUHHN3.2491e-61.0298e-61.0644e-63.9601e-71.8122e-79.7477e-66.4570e-62.4345e-72.9180e-853.5253
GSCL GUHHE3.2823e-61.3348e-61.3014e-65.5002e-72.0549e-76.9107e-67.5113e-62.5285e-73.6444e-853.5253
POPM GUHHZ1.0351e-51.3238e-68.9940e-72.7991e-71.2461e-72.6543e-53.3749e-61.7491e-72.9697e-862.8214
POPM GUHHN7.2963e-61.3503e-61.3103e-63.7782e-72.0054e-72.2322e-57.5753e-63.3599e-73.6129e-862.8214
POPM GUHHE7.2203e-61.9356e-61.6520e-65.9308e-72.6830e-71.6400e-57.7992e-63.8382e-76.1340e-862.8214
SARM GUEHZ3.0902e-66.9550e-74.9993e-72.5169e-71.1236e-71.0407e-53.2564e-61.4850e-71.9261e-873.4242
SARM GUEHN2.6850e-66.3486e-75.9093e-75.3714e-72.0069e-74.9430e-62.2028e-62.0037e-72.1422e-873.4242
SARM GUEHE2.9583e-65.4626e-75.5215e-76.2236e-72.6175e-76.4101e-63.0673e-62.6842e-72.2069e-873.4242
VLC MNHHZ5.8583e-61.2344e-66.6694e-72.0313e-71.0344e-71.7801e-52.9971e-61.6330e-72.9222e-875.5240
VLC MNHHN3.1322e-64.5077e-73.6629e-72.0869e-71.2233e-78.6333e-61.6200e-61.4390e-71.2472e-875.5240
VLC MNHHE2.4740e-65.7309e-73.9633e-72.8938e-71.1494e-76.1976e-62.0773e-61.2534e-71.7460e-875.5240
CARD GUHHZ1.2658e-51.6311e-67.8043e-73.0418e-71.4143e-72.5632e-52.9015e-61.7077e-73.5529e-878.0228
CARD GUHHN2.5078e-53.0463e-62.4453e-66.2694e-72.7631e-77.6535e-51.5919e-53.6464e-76.6986e-878.0228
CARD GUHHE2.1115e-54.1123e-62.4358e-65.9910e-73.2684e-76.5820e-51.0226e-55.6122e-79.7380e-878.0228
MAIM GUHHZ2.7231e-65.7542e-73.7865e-71.6724e-78.4432e-88.1947e-62.5890e-61.1961e-71.3232e-886.3221
MAIM GUHHN3.6800e-69.2892e-75.8705e-72.1098e-71.0311e-71.3035e-52.3537e-61.3015e-72.0635e-886.3221
MAIM GUHHE4.3594e-69.8544e-78.1511e-72.8741e-71.4969e-71.0216e-55.9130e-61.8658e-72.4231e-886.3221
GRAM GUHHZ5.3715e-61.0883e-61.0573e-64.3108e-71.7145e-71.3553e-55.2260e-61.9022e-72.6516e-890.6271
GRAM GUHHN7.4499e-62.0473e-62.3067e-61.1441e-64.0621e-72.3625e-51.2326e-55.8170e-75.9079e-890.6271
GRAM GUHHE9.9794e-62.6430e-62.6350e-61.0309e-64.0997e-72.1410e-51.8974e-55.4627e-77.4729e-890.6271
EQUI GUHHZ3.8151e-67.7932e-76.8375e-73.0630e-71.1199e-71.0431e-53.6985e-61.3560e-71.7979e-891.2247
EQUI GUHHN3.1841e-66.0415e-76.0855e-73.2855e-71.7801e-79.3475e-62.7455e-62.3811e-72.1097e-891.2247
EQUI GUHHE3.9573e-66.4237e-75.9620e-72.8214e-71.1507e-71.0035e-53.3678e-61.4255e-71.8227e-891.2247
CME ITHNZ8.1365e-61.7352e-61.6406e-66.5093e-73.0500e-72.8288e-51.1265e-54.0908e-75.3405e-893.6230
CME ITHNN1.1989e-54.0304e-63.3437e-61.4669e-67.1485e-72.6027e-52.4447e-58.7987e-71.0457e-793.6230
CME ITHNE1.0069e-52.6010e-61.9677e-67.0962e-72.9004e-72.6137e-59.5143e-64.1404e-76.6609e-893.6230
PLMA IVHHZ3.5658e-66.6240e-75.0955e-72.3401e-71.1542e-78.6843e-62.4209e-61.6424e-72.0907e-8117.6246
PLMA IVHHN4.7875e-61.1789e-61.2043e-66.7939e-72.6008e-71.7376e-56.0914e-62.8931e-73.8097e-8117.6246
PLMA IVHHE4.5340e-68.4718e-77.0531e-76.1810e-73.7178e-71.2032e-53.8877e-63.8421e-73.3920e-8117.6246
MSSA IVHHZ1.7802e-64.0007e-72.6689e-71.1724e-74.3873e-84.5037e-61.9228e-66.3897e-89.1783e-9134.8263
MSSA IVHHN3.1694e-67.7421e-75.0251e-72.6143e-71.0156e-76.1880e-62.0760e-61.4483e-72.2574e-8134.8263
MSSA IVHHE1.8162e-65.3732e-74.8208e-72.6992e-79.9142e-84.3842e-62.8413e-61.2475e-71.5637e-8134.8263
BALD NIHHZ1.4132e-51.9655e-61.0587e-63.9241e-71.6187e-74.8692e-55.7934e-62.1600e-74.2375e-8138.0348
BALD NIHHN2.4292e-55.5170e-61.8648e-66.4507e-72.8339e-74.9542e-59.3371e-64.3488e-77.7322e-8138.0348
BALD NIHHE3.0949e-56.2810e-63.9048e-61.4546e-67.6393e-75.8997e-52.6775e-51.0801e-61.6916e-7138.0348
GARG NIEHZ8.2173e-61.7613e-67.7129e-73.4846e-71.4510e-72.9852e-53.8403e-62.0805e-72.9208e-8141.7343
GARG NIEHN4.8990e-79.2969e-87.1622e-87.7499e-89.4655e-87.9494e-75.1871e-71.3180e-77.0391e-9141.7343
GARG NIEHE1.1214e-52.7163e-61.0692e-64.4374e-72.0670e-72.0246e-58.9462e-62.8364e-73.5717e-8141.7343
GORR GUHHZ4.6213e-61.5584e-64.4544e-71.1841e-76.3336e-81.1333e-51.6657e-69.0015e-81.3441e-8151.3276
GORR GUHHN2.1406e-65.3095e-73.6217e-71.0300e-74.5778e-84.9869e-61.9243e-67.0238e-81.1700e-8151.3276
GORR GUHHE3.1737e-69.4655e-74.6972e-71.4128e-77.1826e-88.9049e-61.9646e-61.2095e-71.8958e-8151.3276
*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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