MANUAL Location - Area: Zona Chianti , magnitude (ML): 3.0
2025-02-02 18:11:53 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-02-03 09:10:33

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Earthquake info - Manual location
Event - ID :250202181142
Magnitude (ML) :3.0 +/- 0.2
Origin Time :2025-02-02 18:11:53.873 (UTC)
Location : Latitude: 43.296 N, Longitude: 11.427 E
Area :Zona Chianti
Depth (km) :7.79
Distances (km) : 7.2 --- Monteroni d Arbia
8.4 --- Castelnuovo Berardenga
8.5 --- Siena
12.7 --- Asciano
14.2 --- Murlo
14.4 --- Rapolano Terme
16.2 --- Sovicille
18.1 --- Buonconvento
19.2 --- Gaiole in Chianti
19.6 --- Monteriggioni
20.7 --- San Giovanni d Asso
21.7 --- Radda in Chianti
22.4 --- Castellina in Chianti
22.9 --- Trequanda
24.5 --- Monte San Savino
25.5 --- Bucine
25.7 --- Cavriglia
26.0 --- Lucignano
26.4 --- Monticiano
26.8 --- Montalcino

Quality location estimate: Erh: 1.8 km, Erz: 2.3 km, Nf: 28, Gap: 289 °, Rms: 0.24


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.
CSNTIV2025-02-02 18:11:58.8600.0180-0.012.072025-02-02 18:12:02.4400.0701-0.041.8023.9
OSSCIV2025-02-02 18:11:59.9580.02000.022.022025-02-02 18:12:04.2780.04000.021.8530.3
RUFIIV2025-02-02 18:12:05.9500.03310.380.652025-02-02 18:12:13.8510.10020.041.4461.1
SEIIV2025-02-02 18:12:10.5220.02000.840.352025-02-02 18:12:21.5800.2587-0.111.0484.9
PIIIV2025-02-02 18:12:09.2200.0452-0.121.422025-02-02 18:12:20.2470.7559-0.210.6487.1
LMDIV2025-02-02 18:12:10.9100.0472-0.021.582025-02-02 18:12:21.4940.5189-1.890.0290.1
POPMGU2025-02-02 18:12:11.8500.05220.181.322025-02-02 18:12:25.4520.04000.750.4899.5
MAIMGU2025-02-02 18:12:11.7500.05320.081.522025-02-02 18:12:24.4740.51790.000.83102.1
BDIIV2025-02-02 18:12:13.1600.0562-0.011.502025-02-02 18:12:28.3450.04001.100.30108.5
CARDGU2025-02-02 18:12:13.2800.05720.001.502025-02-02 18:12:28.2950.04000.970.36111.4
MTRZIV2025-02-02 18:12:16.1850.02002.090.092025-02-02 18:12:31.5140.04002.100.10113.3
CMEIT2025-02-02 18:12:14.1270.1205-0.061.372025-02-02 18:12:29.4440.04000.620.62116.7
ZCCAIV2025-02-02 18:12:16.3320.0200-0.141.262025-02-02 18:12:36.7300.04003.370.00122.9
SARMGU2025-02-02 18:12:16.2700.06630.171.282025-02-02 18:12:34.4070.04001.990.00128.8
GSCLGU2025-02-02 18:12:17.1650.0200-0.530.382025-02-02 18:12:36.5950.04001.400.22135.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
OSSC IVHH2.981.17e+130.3330
SEI IVHH3.494.48e+084.9356
PII IVHH2.767.97e-187.1303
MAIM GUHH2.947.44e-1102.1313
BDI IVHH2.887.84e-1108.5322
CARD GUHH2.906.12e-1111.4317
MTRZ IVHH2.926.14e-1113.3360
CME ITHN3.006.84e-1116.7309
ZCCA IVHH2.834.05e-1122.9343
SARM GUEH2.996.32e-1128.8321
GSCL GUHH2.903.71e-1135.4330


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 IVHHZ2.2372e-45.4624e-54.9194e-53.7855e-52.5850e-56.2486e-42.6582e-43.6338e-52.0574e-630.3330
OSSC IVHHN5.0670e-41.1421e-48.2964e-55.2785e-52.8876e-51.7991e-33.3811e-44.3526e-53.1251e-630.3330
OSSC IVHHE3.2261e-41.1248e-47.9880e-55.9360e-53.6406e-51.3693e-33.4276e-45.2272e-54.2604e-630.3330
SEI IVHHZ5.5085e-51.6947e-51.8976e-51.0972e-55.8020e-69.6656e-51.6875e-48.1677e-65.3462e-784.9356
SEI IVHHN8.7689e-53.9142e-53.6495e-52.7194e-51.0261e-51.9182e-42.9447e-41.1846e-51.2024e-684.9356
SEI IVHHE5.0583e-52.6879e-52.0159e-51.8068e-51.0092e-51.3714e-41.0483e-41.7101e-59.5279e-784.9356
PII IVHHZ1.2480e-54.1776e-64.1515e-62.2503e-69.9368e-72.4361e-52.4213e-51.2307e-61.3265e-787.1303
PII IVHHN1.4196e-56.1234e-66.1823e-64.7253e-62.1422e-64.0593e-55.0272e-52.6656e-62.0024e-787.1303
PII IVHHE1.5282e-55.3943e-65.3987e-62.9466e-61.1431e-64.1801e-53.6731e-51.5037e-61.8061e-787.1303
POPM GUHHZ9.2567e-64.9750e-63.7878e-62.9134e-62.2548e-63.1324e-51.9469e-54.3404e-62.5237e-799.5327
POPM GUHHN2.3427e-58.0813e-66.5318e-63.9594e-62.0576e-64.9147e-53.5274e-52.3866e-62.5401e-799.5327
POPM GUHHE2.2071e-56.7425e-65.9885e-62.2870e-61.1923e-63.6131e-54.2864e-51.6160e-62.1391e-799.5327
MAIM GUHHZ8.4108e-63.0793e-62.7834e-62.2310e-69.2095e-72.3233e-59.6603e-61.1629e-61.0875e-7102.1313
MAIM GUHHN1.4645e-54.7763e-65.3828e-64.2213e-61.4159e-64.2515e-52.6146e-51.7041e-61.8022e-7102.1313
MAIM GUHHE7.9692e-62.9068e-62.7099e-62.7812e-61.3475e-62.6524e-51.2495e-51.5373e-61.2973e-7102.1313
BDI IVHHZ8.3205e-62.5063e-62.6053e-61.8578e-61.2033e-62.0345e-51.3311e-51.6624e-61.1163e-7108.5322
BDI IVHHN9.1839e-63.7146e-63.2605e-62.3107e-61.0560e-63.1829e-51.4923e-51.1030e-61.2057e-7108.5322
BDI IVHHE1.5864e-55.5737e-64.7388e-64.4285e-62.9197e-63.0553e-52.2219e-53.9183e-62.1915e-7108.5322
CARD GUHHZ7.3993e-62.2264e-62.2614e-61.1669e-64.9924e-72.4094e-51.5521e-56.7682e-76.8535e-8111.4317
CARD GUHHN1.8864e-55.0983e-63.7209e-61.2989e-67.0702e-77.3709e-53.3044e-51.0233e-61.3078e-7111.4317
CARD GUHHE1.5549e-54.6014e-64.2148e-62.1018e-68.3984e-75.9328e-52.3295e-51.1582e-61.3491e-7111.4317
MTRZ IVHHZ3.0815e-62.0085e-61.5699e-62.2359e-62.4119e-63.1847e-69.9704e-64.4658e-61.6073e-7113.3360
MTRZ IVHHN6.6833e-64.0441e-63.0610e-63.2814e-61.5483e-67.6932e-61.7750e-51.3650e-61.3855e-7113.3360
MTRZ IVHHE3.4970e-61.7916e-61.4987e-61.8284e-69.7457e-74.4525e-69.0157e-61.4169e-68.1154e-8113.3360
CME ITHNZ8.9279e-63.9755e-62.5096e-61.7162e-66.1780e-72.1147e-51.3799e-58.1860e-78.1803e-8116.7309
CME ITHNN1.8046e-54.7583e-64.1991e-62.4909e-61.0248e-62.4031e-51.8167e-51.4513e-61.1992e-7116.7309
CME ITHNE1.5436e-55.2597e-63.9933e-62.5955e-61.0170e-62.2972e-52.3099e-51.2287e-61.2030e-7116.7309
ZCCA IVHHZ1.6707e-68.4246e-78.9846e-76.9845e-73.4406e-72.6586e-67.1814e-63.9723e-73.2683e-8122.9343
ZCCA IVHHN1.8906e-68.6155e-71.0047e-61.0962e-65.6140e-72.6372e-65.7099e-67.2459e-74.1376e-8122.9343
ZCCA IVHHE2.6120e-61.8654e-61.2760e-61.9660e-61.0555e-62.9869e-67.3777e-61.2128e-61.0361e-7122.9343
SARM GUEHZ2.9412e-68.9628e-79.5810e-71.0249e-68.1086e-77.0001e-65.5828e-61.0150e-64.3621e-8128.8321
SARM GUEHN3.6183e-62.1295e-61.6425e-62.2114e-61.2566e-66.8606e-67.1500e-61.2246e-69.2918e-8128.8321
SARM GUEHE2.0401e-61.0792e-69.7768e-71.5634e-67.0415e-74.3591e-63.9108e-68.8088e-74.9513e-8128.8321
GSCL GUHHZ3.3913e-61.0205e-61.1653e-61.0025e-66.2001e-75.2952e-67.4219e-69.0982e-74.9492e-8135.4330
GSCL GUHHN3.2877e-61.4421e-61.5300e-61.6664e-61.3220e-65.5906e-68.9060e-61.8678e-67.1599e-8135.4330
GSCL GUHHE3.3114e-61.1367e-61.2582e-68.8343e-74.5785e-74.0643e-67.2195e-67.0532e-73.8773e-8135.4330
*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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