MANUAL Location - Area: Appennino pistoiese , magnitude (ML): 0.3
2023-02-20 20:49:21 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2023-02-21 08:58:54

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Earthquake info - Manual location
Event - ID :230220204737
Magnitude (ML) :0.3 +/- 0.2
Origin Time :2023-02-20 20:49:21.975 (UTC)
Location : Latitude: 44.179 N, Longitude: 10.784 E
Area :Appennino pistoiese
Depth (km) :8.81
Distances (km) : 3.4 --- Fanano
5.8 --- Sestola
8.9 --- Cutigliano
9.0 --- Lizzano in Belvedere
9.4 --- Montecreto
10.1 --- Abetone
10.8 --- Fiumalbo
11.9 --- Riolunato
12.1 --- Gaggio Montano
13.6 --- San Marcello Pistoiese
13.6 --- Pievepelago
15.1 --- Lama Mocogno
15.6 --- Porretta Terme
16.4 --- Montese
16.6 --- Granaglione
16.7 --- Piteglio
17.9 --- Pavullo nel Frignano
19.1 --- Sambuca Pistoiese
19.2 --- Polinago
19.3 --- Palagano

Quality location estimate: Erh: 0.7 km, Erz: 1 km, Nf: 10, Gap: 149 °, Rms: 0.07


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.
POPMGU2023-02-20 20:49:25.2900.0090-0.120.912023-02-20 20:49:27.9800.0541-0.001.2617.7
BDIIV2023-02-20 20:49:26.2000.0110-0.011.372023-02-20 20:49:29.3800.0661-0.001.1822.0
ZCCAIV2023-02-20 20:49:27.8400.01400.021.292023-02-20 20:49:34.2350.04001.920.0026.3
GSCLGU2023-02-20 20:49:27.3940.0200-0.170.622023-02-20 20:49:31.5400.0802-0.051.0726.4
SARMGU2023-02-20 20:49:28.0510.02000.041.182023-02-20 20:49:32.4540.0400-0.001.1232.1


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
POPM GUHH0.261.24e-117.7188
BDI IVHH0.571.04e-122.0229
ZCCA IVHH0.081.90e-226.339
GSCL GUHH0.162.27e-226.4321


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.
(°)
POPM GUHHZ1.2289e-51.6115e-65.8947e-71.5591e-78.7172e-81.7702e-52.8616e-61.5187e-72.9205e-817.7188
POPM GUHHN1.6838e-52.5636e-61.2031e-63.2022e-71.5395e-74.7003e-55.1535e-62.7052e-75.7344e-817.7188
POPM GUHHE1.0207e-51.7236e-61.0842e-62.2439e-71.2738e-72.3419e-55.6170e-61.9358e-73.6752e-817.7188
BDI IVHHZ1.1415e-51.3991e-63.5174e-79.9556e-85.9537e-82.8945e-51.1646e-61.2172e-73.0022e-822.0229
BDI IVHHN8.3907e-61.2946e-65.8648e-71.9028e-79.6956e-82.7511e-51.9936e-61.6274e-72.8503e-822.0229
BDI IVHHE1.5781e-52.1799e-68.9421e-72.1906e-71.2778e-73.9483e-52.6930e-62.3113e-75.2141e-822.0229
ZCCA IVHHZ7.0853e-79.8144e-88.0966e-83.9817e-82.6949e-82.2257e-66.1561e-73.4782e-83.3538e-926.339
ZCCA IVHHN6.0963e-71.5535e-71.0976e-77.3637e-83.3471e-81.2375e-68.3637e-74.4613e-84.1003e-926.339
ZCCA IVHHE6.3079e-71.8344e-71.4816e-76.9128e-82.5289e-81.1285e-61.0521e-63.7062e-85.1618e-926.339
GSCL GUHHZ1.2663e-61.1749e-76.1641e-82.7364e-81.3501e-81.2430e-63.9089e-71.7786e-82.3200e-926.4321
GSCL GUHHN1.1461e-62.2861e-71.8103e-77.7038e-84.0688e-83.2237e-61.3374e-65.6654e-87.6074e-926.4321
GSCL GUHHE8.4857e-71.5740e-71.5538e-77.4620e-83.1697e-81.6818e-61.0685e-64.3714e-86.0498e-926.4321
SARM GUEHZ3.2500e-75.5217e-84.3757e-81.6090e-87.9772e-96.3622e-72.3284e-71.0294e-81.8535e-932.1271
SARM GUEHN3.0202e-76.2582e-84.5991e-83.2037e-81.6043e-87.1056e-71.9510e-71.5652e-82.0596e-932.1271
SARM GUEHE3.5922e-75.1797e-84.8231e-83.2656e-81.8193e-87.2197e-73.6570e-71.7160e-81.7890e-932.1271
*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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