MANUAL Location - Area: Appennino bolognese , magnitude (ML): 1.3
2025-11-06 11:21:56 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-11-06 14:58:10

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Earthquake info - Manual location
Event - ID :251106112047
Magnitude (ML) :1.3 +/- 0.2
Origin Time :2025-11-06 11:21:56.894 (UTC)
Location : Latitude: 44.152 N, Longitude: 11.395 E
Area :Appennino bolognese
Depth (km) :23.07
Distances (km) : 3.7 --- Firenzuola
9.8 --- Monghidoro
11.1 --- Castel del Rio
12.9 --- Palazzuolo sul Senio
14.4 --- Loiano
14.7 --- San Benedetto Val di Sambro
17.4 --- Monzuno
17.5 --- Scarperia
17.8 --- Fontanelice
18.6 --- Castiglione dei Pepoli
19.3 --- Marradi
19.4 --- Monterenzio
20.1 --- Casola Valsenio
20.6 --- Barberino di Mugello
21.0 --- Borgo Tossignano
21.5 --- San Piero a Sieve
21.9 --- Borgo San Lorenzo
21.9 --- Vernio
22.6 --- Grizzana Morandi
24.2 --- Casalfiumanese

Quality location estimate: Erh: 2.1 km, Erz: 4.4 km, Nf: 20, Gap: 63 °, Rms: 0.25


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.
MTRZIV2025-11-06 11:22:02.6300.0261-0.002.312025-11-06 11:22:07.1280.0400-0.012.0429.8
LMDIV2025-11-06 11:22:03.4700.1627-0.660.432025-11-06 11:22:08.1900.1043-1.520.1134.9
IMOLIV2025-11-06 11:22:06.5160.02001.180.152025-11-06 11:22:14.5650.04002.500.0042.8
RUFIIV2025-11-06 11:22:05.0700.03510.032.122025-11-06 11:22:09.8780.6219-1.310.3042.8
ZCCAIV2025-11-06 11:22:06.4950.02000.032.072025-11-06 11:22:13.2710.0400-0.620.4446.5
POPMGU2025-11-06 11:22:07.2000.0432-0.051.932025-11-06 11:22:14.1110.4819-0.880.4957.3
CSNTIV2025-11-06 11:22:11.9260.02000.910.112025-11-06 11:22:21.4840.27470.091.0579.3
MAIMGU2025-11-06 11:22:10.8830.0200-0.051.792025-11-06 11:22:21.2500.30170.091.0280.4
SARMGU2025-11-06 11:22:11.5560.0200-0.031.792025-11-06 11:22:22.5200.04000.211.0282.9
PIIIV2025-11-06 11:22:13.5790.02001.450.092025-11-06 11:22:22.9200.3367-0.520.7387.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
ZCCA IVHH0.853.74e-246.5304
POPM GUHH1.582.68e-157.3257
MAIM GUHH1.333.19e-280.4250
SARM GUEH1.323.89e-282.9273
PII IVHH1.353.07e-287.5236


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.
(°)
MTRZ IVHHZ3.6881e-54.1606e-61.8592e-61.0069e-64.2490e-73.6879e-59.2654e-65.2679e-74.9579e-829.88
MTRZ IVHHN3.4846e-54.1180e-64.3819e-62.6735e-68.5544e-77.0797e-52.4017e-59.6309e-71.2383e-729.88
MTRZ IVHHE1.6889e-54.5968e-65.1907e-63.8809e-61.4274e-67.4736e-53.1711e-52.0505e-61.8426e-729.88
ZCCA IVHHZ1.1796e-61.9008e-72.1178e-71.3040e-75.7901e-82.8032e-61.4548e-66.4376e-86.0779e-946.5304
ZCCA IVHHN1.4680e-62.5771e-72.6344e-71.6528e-77.2449e-82.2518e-62.0911e-68.1985e-87.1248e-946.5304
ZCCA IVHHE1.5578e-63.4397e-72.8753e-71.8425e-76.0818e-81.8885e-61.9482e-67.2608e-89.5248e-946.5304
POPM GUHHZ6.0797e-61.0701e-68.4272e-72.8137e-71.2721e-72.5399e-54.7940e-62.0588e-73.0643e-857.3257
POPM GUHHN1.0575e-52.7102e-62.7290e-67.8607e-73.4303e-74.6876e-51.6225e-54.9038e-77.3204e-857.3257
POPM GUHHE1.1186e-51.5632e-61.1640e-63.1178e-71.4129e-71.9633e-54.9867e-62.1589e-74.0154e-857.3257
MAIM GUHHZ8.5457e-71.3406e-71.3798e-78.8091e-83.2928e-81.6181e-66.8074e-74.2953e-84.1756e-980.4250
MAIM GUHHN1.5025e-62.3173e-72.1019e-71.9863e-79.8460e-83.2876e-61.3812e-61.0012e-78.8495e-980.4250
MAIM GUHHE1.4387e-61.7944e-71.6093e-71.6865e-71.3677e-73.1914e-61.0023e-61.8819e-79.8931e-980.4250
SARM GUEHZ7.3064e-72.3882e-72.2937e-71.0639e-74.8587e-82.5282e-61.7462e-66.6260e-86.9888e-982.9273
SARM GUEHN7.1470e-72.4454e-72.5328e-72.2615e-78.8074e-81.4400e-61.1409e-61.1127e-78.7684e-982.9273
SARM GUEHE7.7288e-73.0524e-72.8448e-71.9732e-77.6414e-81.6591e-62.4851e-68.3948e-89.2113e-982.9273
PII IVHHZ6.3943e-71.9398e-71.6867e-76.6489e-82.8920e-81.4801e-69.6718e-73.5723e-85.3129e-987.5236
PII IVHHN9.4714e-73.4891e-72.5744e-71.0690e-74.8473e-83.2000e-61.3857e-66.3057e-88.7674e-987.5236
PII IVHHE7.0487e-71.8277e-71.9919e-78.2141e-83.2013e-82.3035e-61.3419e-64.2674e-85.5859e-987.5236
*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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