MANUAL Location - Area: Appennino bolognese , magnitude (ML): 1.5
2024-03-25 06:19:41 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2024-03-25 08:50:05

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Earthquake info - Manual location
Event - ID :240325061920
Magnitude (ML) :1.5 +/- 0.2
Origin Time :2024-03-25 06:19:41.122 (UTC)
Location : Latitude: 44.136 N, Longitude: 11.533 E
Area :Appennino bolognese
Depth (km) :8.42
Distances (km) : 2.6 --- Palazzuolo sul Senio
8.9 --- Castel del Rio
9.1 --- Marradi
12.4 --- Casola Valsenio
12.4 --- Firenzuola
14.0 --- Fontanelice
16.6 --- Borgo Tossignano
17.8 --- Tredozio
19.4 --- Casalfiumanese
19.5 --- Monghidoro
20.9 --- Modigliana
21.0 --- Scarperia
21.7 --- Brisighella
21.8 --- Riolo Terme
22.5 --- Loiano
23.0 --- Vicchio
23.2 --- Borgo San Lorenzo
23.4 --- Portico e San Benedetto
23.5 --- Monterenzio
24.1 --- San Godenzo

Quality location estimate: Erh: 0.9 km, Erz: 0.9 km, Nf: 16, Gap: 139 °, Rms: 0.20


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.
LMDIV2024-03-25 06:19:45.4000.0090-0.022.072024-03-25 06:19:48.8100.0531-0.021.7717.5
SEIIV2024-03-25 06:19:44.9200.01000.022.052024-03-25 06:19:48.0100.0571-0.041.7418.9
MTRZIV2024-03-25 06:19:45.6300.0160-0.290.562024-03-25 06:19:49.9000.0701-0.001.6523.3
RUFIIV2024-03-25 06:19:47.8500.02710.051.682024-03-25 06:19:52.7100.1293-0.430.7634.2
ZCCAIV2024-03-25 06:19:50.7790.0200-0.770.352024-03-25 06:20:01.1180.04000.990.0451.2
POPMGU2024-03-25 06:19:51.9600.0200-0.540.552024-03-25 06:20:00.8100.1955-0.420.8763.4
OSSCIV2024-03-25 06:19:55.1950.02000.450.232024-03-25 06:20:04.6510.0400-0.201.1372.4
CSNTIV2024-03-25 06:19:56.0600.04920.530.232024-03-25 06:20:05.3090.0400-0.870.3476.6


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MTRZ IVHH1.811.29e+023.3336
ZCCA IVHH1.196.71e-251.2299
POPM GUHH1.381.36e-163.4261
OSSC IVHH1.577.79e-272.4199


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.
(°)
SEI IVHHZ8.8541e-52.9777e-52.6497e-51.0690e-55.1585e-61.2025e-42.2341e-47.3933e-69.8970e-718.9237
SEI IVHHN1.5310e-45.7692e-54.9008e-52.4716e-51.1176e-52.1384e-44.1964e-41.4874e-51.6604e-618.9237
SEI IVHHE6.0594e-52.0423e-52.1959e-51.1267e-54.6021e-61.8361e-41.8745e-45.9915e-66.5333e-718.9237
MTRZ IVHHZ1.6088e-54.5081e-64.1909e-62.6002e-61.5139e-63.5787e-53.3059e-51.9967e-61.5231e-723.3336
MTRZ IVHHN4.2725e-51.3133e-51.1175e-54.9137e-61.7601e-66.8287e-58.9878e-52.5548e-63.7801e-723.3336
MTRZ IVHHE3.5913e-51.0265e-51.1586e-55.5460e-61.8963e-68.6401e-56.9640e-52.4456e-63.1096e-723.3336
ZCCA IVHHZ8.5878e-72.0388e-72.4453e-71.6641e-77.0624e-82.8089e-62.2324e-68.2176e-87.1016e-951.2299
ZCCA IVHHN1.3960e-63.5159e-73.7272e-73.4253e-71.4488e-71.4296e-61.9858e-61.5085e-71.3230e-851.2299
ZCCA IVHHE1.6671e-64.6065e-73.7835e-73.0396e-71.8414e-71.9742e-62.4575e-62.6592e-71.7875e-851.2299
POPM GUHHZ1.8251e-64.2599e-74.2985e-73.1694e-71.9388e-74.3753e-62.1976e-62.2034e-71.5656e-863.4261
POPM GUHHN3.4642e-61.3740e-61.0228e-64.7692e-72.0887e-78.2108e-66.2644e-62.8568e-74.0315e-863.4261
POPM GUHHE2.7803e-67.9297e-77.1096e-72.5233e-71.1376e-74.9037e-65.4990e-61.5804e-72.1874e-863.4261
OSSC IVHHZ1.2470e-62.5388e-72.7676e-72.1373e-77.4823e-83.8514e-61.3826e-68.5087e-88.3419e-972.4199
OSSC IVHHN1.4407e-63.6405e-73.6481e-72.2758e-71.3237e-73.4317e-62.5796e-61.5173e-71.2550e-872.4199
OSSC IVHHE2.3014e-66.8436e-76.1559e-73.4340e-71.2496e-75.0105e-63.0289e-61.5561e-71.9243e-872.4199
*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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