MANUAL Location - Area: Colline Metallifere , magnitude (ML): 1.8
2024-11-20 22:15:12 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2024-11-21 10:29:46

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Earthquake info - Manual location
Event - ID :241120221459
Magnitude (ML) :1.8 +/- 0.2
Origin Time :2024-11-20 22:15:12.73 (UTC)
Location : Latitude: 43.281 N, Longitude: 10.979 E
Area :Colline Metallifere
Depth (km) :13.46
Distances (km) : 5.6 --- Radicondoli
8.7 --- Casole d Elsa
8.7 --- Pomarance
9.9 --- Castelnuovo di Val di Cecina
16.5 --- Chiusdino
16.7 --- Volterra
16.9 --- Montieri
17.9 --- Monterotondo Marittimo
19.9 --- Colle di Val d Elsa
20.2 --- Sovicille
21.5 --- San Gimignano
22.3 --- Montecatini Val di Cecina
22.6 --- Monticiano
23.4 --- Monteriggioni
24.3 --- Monteverdi Marittimo
25.1 --- Poggibonsi
26.5 --- Massa Marittima
28.2 --- Guardistallo
28.6 --- Siena
28.8 --- Gambassi Terme

Quality location estimate: Erh: 2.7 km, Erz: 2.8 km, Nf: 26, Gap: 274 °, Rms: 0.32


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.
CSNTIV2024-11-20 22:15:19.8500.0241-0.041.442024-11-20 22:15:25.1000.11030.041.4735.6
OSSCIV2024-11-20 22:15:20.2360.02000.401.232024-11-20 22:15:25.4690.04000.511.0337.1
PIIIV2024-11-20 22:15:24.1200.0371-0.041.402024-11-20 22:15:32.7800.19350.381.2262.6
RUFIIV2024-11-20 22:15:27.0600.04520.191.482024-11-20 22:15:37.3100.23460.131.2676.4
MAIMGU2024-11-20 22:15:27.3400.04720.141.512024-11-20 22:15:36.5120.0400-1.100.1281.6
POPMGU2024-11-20 22:15:28.7700.05120.501.072024-11-20 22:15:40.6200.27071.080.3387.9
SEIIV2024-11-20 22:15:30.0200.05420.421.232024-11-20 22:15:42.0100.4429-0.350.7492.3
CARDGU2024-11-20 22:15:29.2100.05320.101.492024-11-20 22:15:40.6700.4879-0.240.8293.0
BDIIV2024-11-20 22:15:29.3810.02000.071.482024-11-20 22:15:41.2610.0400-0.041.2093.2
LMDIV2024-11-20 22:15:32.3300.0603-0.051.282024-11-20 22:15:46.2240.6449-0.900.40107.0
SARMGU2024-11-20 22:15:32.7370.02000.640.772024-11-20 22:15:48.0500.04001.720.05111.5
EQUIGU2024-11-20 22:15:34.1760.08031.020.232024-11-20 22:15:47.7440.0400-0.430.63119.4
GSCLGU2024-11-20 22:15:34.8930.02000.371.282024-11-20 22:15:50.2220.0400-0.280.83123.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
OSSC IVHH1.916.76e-137.139
PII IVHH1.781.73e-162.6323
MAIM GUHH1.615.76e-281.6331
POPM GUHH1.831.86e-187.9348
SEI IVHH2.322.55e-192.319
CARD GUHH1.899.27e-293.0334
BDI IVHH1.697.23e-293.2341
SARM GUEH1.805.81e-2111.5335
EQUI GUHH1.582.48e-2119.4326
GSCL GUHH2.076.93e-2123.7345


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.
(°)
OSSC IVHHZ5.6063e-51.0806e-54.1081e-61.9793e-67.0840e-79.1936e-51.7619e-51.0319e-61.4273e-737.139
OSSC IVHHN3.8573e-58.6014e-66.0208e-62.7347e-69.9602e-79.2000e-52.6753e-51.4790e-62.3407e-737.139
OSSC IVHHE4.3287e-59.0417e-66.8815e-62.1694e-69.0133e-79.7742e-53.6620e-51.4840e-62.4335e-737.139
PII IVHHZ3.6130e-67.9734e-77.0616e-72.5927e-78.9491e-81.1521e-54.4642e-61.3197e-72.0293e-862.6323
PII IVHHN4.3416e-61.5021e-61.4479e-65.4629e-72.2253e-71.0312e-51.4855e-52.9600e-74.2804e-862.6323
PII IVHHE5.2082e-61.1649e-61.3333e-64.9881e-71.9310e-71.7102e-51.0191e-52.6230e-73.5833e-862.6323
MAIM GUHHZ2.5667e-65.0800e-74.1660e-71.9380e-77.9056e-88.1623e-62.0621e-61.0475e-71.3785e-881.6331
MAIM GUHHN2.9178e-65.6354e-75.2145e-72.6641e-79.6678e-81.2499e-51.8815e-61.2527e-71.8741e-881.6331
MAIM GUHHE3.9357e-67.2967e-76.1402e-72.7908e-71.3144e-79.9833e-62.5876e-61.4892e-72.2097e-881.6331
POPM GUHHZ3.9088e-69.4748e-78.9459e-73.7247e-71.4877e-78.5009e-64.2366e-61.9627e-72.4272e-887.9348
POPM GUHHN8.6962e-62.4585e-61.8505e-66.2510e-72.6533e-72.0766e-51.1167e-53.8163e-76.2688e-887.9348
POPM GUHHE5.2691e-61.5964e-61.4384e-64.3553e-71.7904e-71.5786e-57.7131e-62.4682e-74.1306e-887.9348
SEI IVHHZ3.4805e-61.2408e-61.5553e-61.1797e-63.2042e-79.8392e-68.3460e-63.8135e-73.9356e-892.319
SEI IVHHN5.1323e-61.8383e-62.2221e-61.6329e-65.5511e-79.3434e-61.4832e-55.9592e-77.2360e-892.319
SEI IVHHE4.5295e-61.3337e-61.4932e-68.5290e-72.7658e-78.7675e-67.9837e-63.2181e-74.2264e-892.319
CARD GUHHZ2.9973e-67.2949e-75.2927e-72.1082e-79.1731e-81.2880e-52.9682e-61.1041e-71.9178e-893.0334
CARD GUHHN7.6473e-61.3020e-68.9589e-73.0642e-71.2495e-73.0349e-55.2327e-61.5833e-73.0700e-893.0334
CARD GUHHE7.4181e-61.3063e-68.9207e-74.3330e-72.0432e-73.1304e-52.9975e-62.5786e-73.1864e-893.0334
BDI IVHHZ2.0922e-65.0827e-74.8646e-72.2184e-79.3749e-87.7208e-63.2104e-61.1975e-71.5982e-893.2341
BDI IVHHN3.3828e-69.1482e-77.1668e-73.0554e-71.3182e-71.2619e-55.4658e-61.4011e-71.8983e-893.2341
BDI IVHHE3.3724e-67.5846e-77.1261e-72.7579e-71.2832e-71.4153e-53.8142e-61.7406e-72.1044e-893.2341
SARM GUEHZ6.1787e-72.7409e-72.1328e-71.4568e-79.5512e-81.7794e-61.3315e-61.7105e-73.6519e-8111.5335
SARM GUEHN1.3595e-64.6346e-73.0282e-72.5236e-71.2242e-72.8007e-61.2046e-61.5516e-71.6416e-8111.5335
SARM GUEHE6.3740e-72.6419e-72.4690e-72.2017e-71.0463e-71.9541e-61.0914e-61.0721e-79.2836e-9111.5335
EQUI GUHHZ8.5406e-72.0573e-72.2164e-71.0758e-76.0196e-82.1661e-61.2007e-66.6414e-86.8055e-9119.4326
EQUI GUHHN1.0489e-62.3867e-72.1692e-79.5735e-85.7249e-83.5868e-61.1571e-67.4947e-87.2093e-9119.4326
EQUI GUHHE5.7575e-71.5299e-71.2689e-71.2580e-76.4545e-81.4803e-65.5739e-76.0491e-84.6643e-9119.4326
GSCL GUHHZ7.6647e-72.0833e-71.8580e-71.2826e-71.6987e-71.7026e-68.8042e-72.9378e-74.2615e-8123.7345
GSCL GUHHN1.4498e-64.6181e-74.6311e-71.8553e-77.2859e-83.0615e-63.0729e-69.5930e-81.1300e-8123.7345
GSCL GUHHE1.7251e-65.2693e-74.4906e-72.3524e-71.9440e-73.6268e-62.0923e-63.0334e-73.8673e-8123.7345
*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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