MANUAL Location - Area: Appennino modenese , magnitude (ML): 1.5
2025-07-04 21:58:41 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-05 08:22:04

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Earthquake info - Manual location
Event - ID :250704215743
Magnitude (ML) :1.5 +/- 0.2
Origin Time :2025-07-04 21:58:41.868 (UTC)
Location : Latitude: 44.259 N, Longitude: 10.993 E
Area :Appennino modenese
Depth (km) :16.51
Distances (km) : 2.6 --- Castel d Aiano
4.1 --- Montese
8.3 --- Gaggio Montano
9.9 --- Zocca
10.0 --- Vergato
11.2 --- Castel di Casio
11.4 --- Porretta Terme
12.5 --- Camugnano
12.8 --- Grizzana Morandi
13.3 --- Lizzano in Belvedere
15.2 --- Pavullo nel Frignano
16.1 --- Savigno
16.7 --- Fanano
17.2 --- Sambuca Pistoiese
17.8 --- Granaglione
17.9 --- Sestola
18.6 --- Castiglione dei Pepoli
19.0 --- Guiglia
19.3 --- Marzabotto
19.8 --- San Benedetto Val di Sambro

Quality location estimate: Erh: 1 km, Erz: 1 km, Nf: 30, Gap: 88 °, 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.
ZCCAIV2025-07-04 21:58:46.0100.0120-0.281.182025-07-04 21:58:49.8730.13030.061.3320.1
POPMGU2025-07-04 21:58:48.2600.01600.021.442025-07-04 21:58:53.0500.1063-0.041.4234.7
GSCLGU2025-07-04 21:58:49.2500.0190-0.241.292025-07-04 21:58:55.0000.1153-0.151.3437.9
MTRZIV2025-07-04 21:58:50.3300.02110.980.07--:---.-----.---.-- 38.6
SARMGU2025-07-04 21:58:51.3000.02510.101.302025-07-04 21:58:57.9900.1554-0.161.2451.0
CARDGU2025-07-04 21:58:50.9900.0241-0.101.442025-07-04 21:58:58.1590.15640.240.8951.1
ERBMIV2025-07-04 21:58:52.0400.0261-0.340.952025-07-04 21:58:59.7000.3527-0.660.5152.4
VLCMN2025-07-04 21:58:51.5600.02510.191.022025-07-04 21:58:58.6400.16040.210.9452.4
MAIMGU2025-07-04 21:58:52.1200.0281-0.051.462025-07-04 21:58:59.3400.2416-0.350.9058.0
RUFIIV2025-07-04 21:58:54.1400.03210.141.182025-07-04 21:59:02.0500.2837-1.040.1764.5
PIIIV2025-07-04 21:58:54.7100.0351-0.221.282025-07-04 21:59:03.6600.3628-0.690.4972.4
GRAMGU2025-07-04 21:58:56.8100.04010.280.752025-07-04 21:59:08.0870.13031.000.0979.9
OSSCIV2025-07-04 21:58:57.8040.04010.181.052025-07-04 21:59:08.5690.1303-0.281.0085.9
CSNTIV2025-07-04 21:58:58.6700.0452-0.171.322025-07-04 21:59:10.1360.1303-0.740.3792.0
PLMAIV2025-07-04 21:58:58.3700.0472-0.131.362025-07-04 21:59:10.0300.2897-0.220.9395.2
MSSAIV2025-07-04 21:59:02.6100.06430.021.28--:---.-----.---.-- 118.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
ZCCA IVHH1.952.32e+020.1353
POPM GUHH1.658.56e-134.7218
GSCL GUHH1.412.05e-137.9288
CARD GUHH1.752.45e-151.1238
MAIM GUHH1.184.52e-258.0226
PII IVHH1.466.04e-272.4212
GRAM GUHH1.571.14e-179.9290
OSSC IVHH1.514.59e-285.9166
PLMA IVHH1.443.03e-295.2256


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.
(°)
ZCCA IVHHZ8.9742e-51.2190e-59.8323e-65.2312e-63.0657e-62.3123e-45.2524e-54.6450e-63.6549e-720.1353
ZCCA IVHHN8.4910e-51.8058e-51.5646e-51.1252e-56.2612e-61.3598e-41.1645e-48.8474e-66.9104e-720.1353
ZCCA IVHHE6.5956e-51.9780e-51.6404e-51.0051e-53.9361e-61.1279e-41.0237e-46.0717e-65.4313e-720.1353
POPM GUHHZ3.3666e-57.1192e-63.5525e-61.3572e-67.6324e-71.1312e-42.3234e-51.0858e-61.5763e-734.7218
POPM GUHHN5.3248e-51.1622e-57.3756e-61.9551e-61.1467e-61.2658e-44.3173e-51.8634e-62.9401e-734.7218
POPM GUHHE3.1641e-57.0487e-65.3145e-61.2661e-67.2315e-71.1965e-43.9480e-51.0222e-61.8498e-734.7218
GSCL GUHHZ4.5452e-68.5053e-76.9509e-73.3197e-71.3391e-71.3381e-53.4534e-61.5731e-72.0614e-837.9288
GSCL GUHHN7.5962e-62.3878e-61.9675e-67.8945e-73.4019e-73.5018e-51.0383e-54.4077e-75.6956e-837.9288
GSCL GUHHE8.9216e-62.3132e-61.9869e-66.1052e-72.6139e-73.6048e-59.8350e-63.7597e-75.3415e-837.9288
SARM GUEHZ1.5709e-51.6527e-61.3683e-67.3596e-73.3046e-72.3641e-58.0978e-64.2060e-75.3299e-851.0260
SARM GUEHN1.8477e-56.1337e-63.9224e-64.0147e-61.6011e-64.6326e-51.4343e-51.9732e-61.9966e-751.0260
SARM GUEHE1.6006e-53.2330e-62.5062e-61.9633e-67.2077e-74.6201e-51.7477e-58.9954e-78.8106e-851.0260
CARD GUHHZ1.5232e-52.1985e-67.4164e-72.6641e-71.0499e-75.5966e-52.4535e-61.7944e-74.7278e-851.1238
CARD GUHHN3.4333e-54.9153e-62.0978e-66.3211e-73.2591e-71.1111e-46.5753e-65.2443e-71.1546e-751.1238
CARD GUHHE3.4322e-55.2629e-61.8751e-65.2838e-72.6027e-71.4605e-44.9200e-64.4655e-71.0694e-751.1238
ERBM IVEHZ2.8891e-64.1894e-72.7925e-71.6868e-78.2343e-81.1388e-51.0298e-67.4468e-89.1570e-952.4291
ERBM IVEHN3.1220e-65.2703e-74.0134e-71.6689e-76.5206e-88.9153e-61.5180e-68.2603e-81.2652e-852.4291
ERBM IVEHE4.7786e-66.7392e-73.6143e-71.1263e-76.0675e-81.0521e-51.5176e-67.0269e-81.4513e-852.4291
VLC MNHHZ1.8993e-52.4090e-61.6218e-68.7474e-74.1637e-72.5914e-58.5644e-65.8385e-76.8609e-852.4257
VLC MNHHN1.3786e-53.5708e-62.5236e-61.8112e-66.8825e-73.9239e-58.4935e-68.0538e-71.1427e-752.4257
VLC MNHHE1.4813e-53.6438e-62.2014e-66.5954e-73.1413e-73.9442e-58.5913e-64.2839e-78.4173e-852.4257
MAIM GUHHZ1.6840e-63.7051e-73.1217e-71.5300e-77.9824e-85.2867e-62.6361e-69.7666e-81.1081e-858.0226
MAIM GUHHN3.0997e-67.2793e-74.6456e-71.9443e-79.5143e-89.1412e-63.0417e-61.0783e-71.6207e-858.0226
MAIM GUHHE2.5999e-65.1841e-74.5647e-72.0671e-71.1492e-79.5442e-62.9860e-61.2540e-71.4928e-858.0226
PII IVHHZ1.6371e-64.4773e-73.6956e-71.1113e-74.9339e-86.3344e-61.8485e-67.1510e-81.1367e-872.4212
PII IVHHN1.8283e-65.2760e-75.6735e-72.5770e-77.6526e-85.2473e-62.4213e-69.7914e-81.4306e-872.4212
PII IVHHE2.7169e-65.3742e-74.7969e-72.4840e-71.2304e-77.1126e-62.1508e-61.6777e-71.9265e-872.4212
GRAM GUHHZ3.4914e-64.8501e-73.8910e-71.5172e-75.9700e-84.5697e-61.6971e-67.9858e-81.4184e-879.9290
GRAM GUHHN2.7252e-66.7087e-76.9690e-73.3755e-71.2446e-75.6167e-64.2399e-61.6560e-71.8414e-879.9290
GRAM GUHHE3.2453e-61.1035e-61.1890e-64.6335e-71.7770e-76.2729e-68.8554e-62.1361e-73.0468e-879.9290
OSSC IVHHZ2.5535e-62.2406e-71.5279e-71.8142e-71.0794e-71.1315e-68.1772e-71.0538e-77.9408e-985.9166
OSSC IVHHN3.9206e-63.7636e-71.8180e-72.3071e-73.1811e-72.2448e-67.6641e-74.3504e-71.8444e-885.9166
OSSC IVHHE2.7193e-63.0635e-71.9608e-72.5515e-71.1432e-71.5157e-69.7455e-71.1647e-79.2365e-985.9166
PLMA IVHHZ1.3153e-62.3012e-71.6114e-78.3027e-84.7168e-83.0853e-65.7386e-75.8948e-85.9869e-995.2256
PLMA IVHHN2.2860e-64.2484e-73.3558e-71.1345e-77.1515e-89.7967e-62.0235e-68.6302e-89.9211e-995.2256
PLMA IVHHE1.6734e-62.5329e-72.0966e-71.1674e-76.7020e-83.8039e-61.1636e-67.4694e-86.8680e-995.2256
*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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