AUTOMATIC Location - Area: Appennino bolognese , magnitude (ML): 0.9
2025-08-08 00:01:14 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-08 00:05:33

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Earthquake info - RsniPicker2 automatic location
Event - ID :250808000050
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2025-08-08 00:01:14.69 (UTC)
Location : Latitude: 44.188 N, Longitude: 11.269 E
Area :Appennino bolognese
Depth (km) :19.69
Distances (km) : 4.2 --- San Benedetto Val di Sambro (BO)
5.5 --- Monghidoro (BO)
10.0 --- Castiglione dei Pepoli (BO)
10.1 --- Monzuno (BO)
10.2 --- Loiano (BO)
11.6 --- Firenzuola (FI)
12.1 --- Grizzana Morandi (BO)
14.5 --- Camugnano (BO)
16.4 --- Vergato (BO)
17.4 --- Vernio (PO)
17.9 --- Marzabotto (BO)
18.7 --- Castel di Casio (BO)
18.8 --- Monterenzio (BO)
19.1 --- Castel del Rio (BO)
20.6 --- Barberino di Mugello (FI)
21.9 --- Cantagallo (PO)
22.3 --- Pianoro (BO)
22.4 --- Scarperia (FI)
23.3 --- Sasso Marconi (BO)
23.5 --- Sambuca Pistoiese (PT)

Quality location estimate:
Erh: 5 km, Erz: 1.2 km, Nf: 8, Gap: 111°, Rms: 0.079 s
Stazioni validate: 5


RsniPicker2 - Automatic location results
Station Net P arrival times P pick
err		 P pick
weight		 P res Nll
weight		 S arrival time S pick
err		 S pick
weight		 S res Nll
weight		 Dist.
MTRZIV2025-08-08 00:01:20.0590.0280-0.011.602025-08-08 00:01:24.4780.24520.200.7327.1
ZCCAIV2025-08-08 00:01:22.2700.01700.011.54--:---.-----.---.-- 35.4
RUFIIV2025-08-08 00:01:23.8890.02300.021.452025-08-08 00:01:29.6500.2512-1.090.0047.7
POPMGU2025-08-08 00:01:23.5400.0230-0.021.452025-08-08 00:01:30.0690.1442-0.110.8348.1
PIIIV2025-08-08 00:01:29.6100.04000.320.38--:---.-----.---.-- 81.4


RsniPicker2 - Automatic magnitude (ML) calculation results
Station Net Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth Used
MTRZ IV1.302.97e-127.142SI
ZCCA IV0.704.90e-235.4308SI
POPM GU0.705.09e-248.1249SI
PII IV0.901.15e-281.4229SI


Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation
Station Net Channel PGA
(g)		 PGV
(m/s)		 PGD
(m)		 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.
(°)
MTRZ IVHHZ2.9444e-67.2702e-70.0000e+07.6683e-71.3925e-61.8126e-66.8504e-63.9995e-63.2647e-73.7764e-827.142
MTRZ IVHHN7.4957e-62.7458e-60.0000e+02.4403e-64.3074e-64.3074e-61.7945e-51.3078e-58.8815e-79.6165e-827.142
MTRZ IVHHE2.7277e-68.4478e-70.0000e+07.3280e-71.3208e-61.7686e-67.9720e-64.0492e-63.1218e-72.7638e-827.142
ZCCA IVHHZ2.1944e-64.2446e-70.0000e+03.2228e-76.1341e-78.0826e-75.6545e-61.5252e-62.0841e-71.4880e-835.4308
ZCCA IVHHN1.5080e-63.8673e-70.0000e+04.2890e-78.1360e-78.1360e-74.0443e-62.5643e-62.8651e-71.2345e-835.4308
ZCCA IVHHE1.3945e-63.0153e-70.0000e+03.3747e-77.1065e-79.1685e-72.2237e-62.1725e-62.2267e-71.4622e-835.4308
POPM GUHHZ4.5497e-64.5603e-70.0000e+02.5918e-74.2786e-75.8195e-74.9047e-61.6106e-66.7568e-89.6758e-948.1249
POPM GUHHN4.4356e-66.3052e-70.0000e+06.4448e-71.0002e-61.0002e-68.6736e-63.5524e-61.0815e-71.6452e-848.1249
POPM GUHHE2.7127e-65.6656e-70.0000e+04.7774e-77.5514e-71.0020e-65.3481e-62.7171e-69.9873e-81.3653e-848.1249
PII IVHHZ2.9484e-78.6800e-80.0000e+08.8483e-81.5144e-72.0072e-79.2945e-75.7927e-72.8598e-82.5281e-981.4229
PII IVHHN2.6051e-79.5817e-80.0000e+09.2602e-81.7653e-71.7653e-75.4008e-76.8511e-75.5628e-83.1411e-981.4229
PII IVHHE2.6391e-71.0063e-70.0000e+01.0949e-71.8637e-72.4732e-75.6607e-79.9716e-73.3624e-83.7497e-981.4229
*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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