MANUAL Location - Area: Valdarno inferiore , magnitude (ML): 0.9
2023-03-18 20:51:54 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2023-03-20 08:23:13

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Earthquake info - Manual location
Event - ID :230318205024
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2023-03-18 20:51:54.566 (UTC)
Location : Latitude: 43.787 N, Longitude: 10.756 E
Area :Valdarno inferiore
Depth (km) :5.46
Distances (km) : 6.2 --- Ponte Buggianese
6.6 --- Chiesina Uzzanese
7.0 --- Altopascio
7.7 --- Fucecchio
8.3 --- Santa Croce sull Arno
9.6 --- Castelfranco di Sotto
10.0 --- Larciano
10.1 --- Montecarlo
10.3 --- Cerreto Guidi
10.5 --- Monsummano Terme
10.6 --- Buggiano
10.9 --- Pieve a Nievole
10.9 --- Montecatini-Terme
10.9 --- Santa Maria a Monte
11.3 --- Uzzano
11.8 --- Lamporecchio
12.4 --- Porcari
12.8 --- Montopoli in Val d Arno
13.3 --- Pescia
13.6 --- Vinci

Quality location estimate: Erh: 1.6 km, Erz: 3 km, Nf: 18, Gap: 226 °, 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.
POPMGU2023-03-18 20:52:00.6800.01200.540.402023-03-18 20:52:05.7290.10021.510.0029.3
BDIIV2023-03-18 20:52:01.1300.0120-0.042.092023-03-18 20:52:06.0390.04000.011.9333.8
CARDGU2023-03-18 20:52:01.1730.01200.032.212023-03-18 20:52:05.4710.1002-0.500.2735.0
SARMGU2023-03-18 20:52:04.2060.0602-0.031.922023-03-18 20:52:12.0620.04000.670.3452.9
SEIIV2023-03-18 20:52:07.3350.02002.020.002023-03-18 20:52:16.5970.04003.030.0057.0
RUFIIV2023-03-18 20:52:06.1810.02000.011.952023-03-18 20:52:15.4070.04000.430.6861.0
EQUIGU2023-03-18 20:52:06.0200.02710.021.952023-03-18 20:52:13.5100.1745-0.900.2564.3
GSCLGU2023-03-18 20:52:06.9700.03310.131.492023-03-18 20:52:15.8030.10020.051.4164.4
LMDIV2023-03-18 20:52:09.6990.0200-0.930.192023-03-18 20:52:22.6330.0400-0.280.9282.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
POPM GUHH0.701.32e-129.30
BDI IVHH0.767.23e-233.8338
CARD GUHH1.181.40e-135.0321
SARM GUEH1.014.99e-252.9327


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 GUHHZ2.0608e-51.6232e-65.7836e-71.8641e-78.3338e-82.4775e-52.6213e-61.2649e-73.1013e-829.30
POPM GUHHN1.4662e-52.2866e-61.2475e-63.7074e-71.6150e-73.7334e-55.3376e-62.7601e-75.6620e-829.30
POPM GUHHE1.5119e-52.0445e-61.1368e-62.5726e-71.2583e-73.2404e-54.5311e-62.0378e-74.4656e-829.30
BDI IVHHZ9.5929e-61.0992e-64.1401e-71.8533e-76.5665e-81.2948e-52.2476e-61.0468e-72.3190e-833.8338
BDI IVHHN1.3501e-51.7702e-66.5966e-72.7186e-71.1707e-72.9848e-53.2267e-61.5488e-73.4628e-833.8338
BDI IVHHE1.1167e-51.3221e-65.7335e-72.1090e-79.4260e-83.0029e-52.9232e-61.4666e-73.0808e-833.8338
CARD GUHHZ1.2430e-51.4228e-65.2428e-71.9239e-78.7219e-82.1013e-52.0047e-61.3717e-72.7715e-835.0321
CARD GUHHN3.5802e-53.7286e-61.1957e-62.7639e-71.4449e-75.9629e-55.6604e-63.1300e-76.7928e-835.0321
CARD GUHHE2.4890e-52.8170e-61.1119e-62.6978e-71.5858e-76.1181e-54.6755e-62.9931e-76.2061e-835.0321
SARM GUEHZ2.0145e-62.6944e-72.2059e-71.0161e-73.3986e-84.0519e-61.2793e-64.6385e-87.8705e-952.9327
SARM GUEHN2.6410e-64.4141e-73.7145e-72.8474e-79.0039e-84.8375e-61.5704e-61.1087e-71.3893e-852.9327
SARM GUEHE2.5035e-63.1130e-72.6391e-71.5299e-76.2997e-84.9245e-61.6385e-68.1921e-88.4002e-952.9327
SEI IVHHZ1.6418e-67.2878e-76.2427e-73.2899e-71.3101e-74.3595e-63.0959e-61.7607e-72.3093e-857.058
SEI IVHHN1.8570e-67.5864e-77.7536e-74.7771e-71.6285e-74.2941e-65.0602e-62.1830e-72.6796e-857.058
SEI IVHHE2.8081e-67.1916e-78.2314e-75.8735e-71.8180e-72.9209e-64.4028e-62.1160e-72.2295e-857.058
EQUI GUHHZ4.0816e-65.6894e-74.0903e-71.6722e-77.3494e-88.3565e-63.0298e-68.9041e-81.4739e-864.3311
EQUI GUHHN5.1323e-68.0986e-74.4651e-72.0792e-71.0436e-71.4115e-52.5851e-61.2628e-71.8528e-864.3311
EQUI GUHHE5.7770e-67.2451e-74.0712e-71.7976e-77.3177e-81.7364e-51.9272e-61.1349e-71.6673e-864.3311
GSCL GUHHZ1.5023e-62.2150e-71.8346e-76.8243e-82.9641e-84.1406e-61.0727e-64.1038e-86.5836e-964.4348
GSCL GUHHN1.5363e-64.5162e-74.0479e-71.2731e-75.5186e-86.1596e-62.9908e-67.9288e-81.2508e-864.4348
GSCL GUHHE2.0909e-66.5476e-75.6044e-71.8206e-77.1019e-86.1859e-62.0302e-69.8685e-81.8864e-864.4348
*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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