Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-12-20 18:08:51
| Event - ID : | 251220180359 |
| Magnitude (ML) : | 1.0 +/- 0.3 |
| Origin Time : | 2025-12-20 18:05:19.639 (UTC) |
| Location : | Latitude: 43.637 N, Longitude: 11.093 E |
| Area : | Valdarno inferiore |
| Depth (km) : | 7.85 |
| Distances (km) : |
1.5 --- Montespertoli (FI) 7.8 --- San Casciano in Val di Pesa (FI) 10.5 --- Castelfiorentino (FI) 10.5 --- Tavarnelle Val di Pesa (FI) 10.7 --- Certaldo (FI) 12.2 --- Montelupo Fiorentino (FI) 12.2 --- Barberino Val d Elsa (FI) 14.2 --- Impruneta (FI) 14.8 --- Lastra a Signa (FI) 15.0 --- Empoli (FI) 15.1 --- Capraia e Limite (FI) 15.3 --- Scandicci (FI) 15.5 --- Gambassi Terme (FI) 16.2 --- Signa (FI) 17.2 --- Montaione (FI) 18.9 --- Poggibonsi (SI) 19.1 --- Greve in Chianti (FI) 19.2 --- San Gimignano (SI) 20.2 --- Firenze (FI) 20.2 --- Poggio a Caiano (PO) |
Quality location estimate:
Erh: 1.2 km, Erz: 2.8 km, Nf: 13, Gap: 143°, Rms: 0.245 s
Stazioni validate: 6
| Station | Net | P arrival times | P pick err |
P pick weight |
P res | Nll weight |
S arrival time | S pick err |
S pick weight |
S res | Nll weight |
Dist. |
| CSNT | IV | 2025-12-20 18:05:25.129 | 0.031 | 0 | -0.01 | 2.05 | 2025-12-20 18:05:29.010 | 0.075 | 1 | -0.05 | 1.59 | 25.4 |
| RUFI | IV | 2025-12-20 18:05:27.700 | 0.025 | 0 | 0.02 | 1.90 | 2025-12-20 18:05:32.959 | 0.122 | 2 | -0.65 | 0.41 | 41.0 |
| PII | IV | 2025-12-20 18:05:28.530 | 0.027 | 0 | 0.02 | 1.84 | 2025-12-20 18:05:34.009 | 0.141 | 2 | -0.97 | 0.38 | 47.3 |
| POPM | GU | 2025-12-20 18:05:29.540 | 0.031 | 0 | 0.00 | 1.78 | 2025-12-20 18:05:35.720 | 0.439 | 2 | -1.29 | 0.33 | 53.3 |
| MAIM | GU | 2025-12-20 18:05:30.209 | 0.037 | 0 | 0.01 | 1.72 | 2025-12-20 18:05:36.630 | 0.208 | 2 | -1.29 | 0.30 | 57.8 |
| LMD | IV | 2025-12-20 18:05:32.590 | 0.038 | 0 | -0.54 | 0.33 | 2025-12-20 18:05:42.110 | 0.566 | 3 | -1.29 | 0.35 | 69.9 |
| MSSA | IV | 2025-12-20 18:05:40.110 | 1.305 | 3 | -4.46 | 0.01 | --:-- | -.--- | - | -.-- | -.-- | 147.2 |
| Station | Net | Stat. Mag. | Wood-And. Ampl. |
Dist. (km) | Azimuth | Used |
| PII | IV | 1.00 | 5.27e-2 | 47.3 | 282 | SI |
| POPM | GU | 0.80 | 5.12e-2 | 53.3 | 329 | SI |
| MAIM | GU | 0.70 | 1.48e-2 | 57.8 | 303 | SI |
| MSSA | IV | 1.40 | 9.83e-3 | 147.2 | 301 | SI |
| Station | Net | Channel | PGA (g) |
PGV (m/s) |
PGD (m) |
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. (°) |
| PII | IV | HHZ | 3.4001e-6 | 6.6368e-7 | 0.0000e+0 | 3.5294e-7 | 6.2462e-7 | 8.7813e-7 | 5.4903e-6 | 8.6937e-7 | 5.5921e-8 | 1.0956e-8 | 47.3 | 282 |
| PII | IV | HHN | 4.0825e-6 | 7.4494e-7 | 0.0000e+0 | 4.0918e-7 | 6.6549e-7 | 6.6549e-7 | 7.1894e-6 | 2.5532e-6 | 1.2161e-7 | 1.3635e-8 | 47.3 | 282 |
| PII | IV | HHE | 2.7503e-6 | 6.6262e-7 | 0.0000e+0 | 3.8520e-7 | 6.4120e-7 | 8.5657e-7 | 6.5855e-6 | 1.7810e-6 | 9.3557e-8 | 1.1534e-8 | 47.3 | 282 |
| POPM | GU | HHZ | 2.1926e-6 | 3.3527e-7 | 0.0000e+0 | 2.4322e-7 | 4.0459e-7 | 5.6215e-7 | 7.5511e-6 | 6.5433e-7 | 6.5806e-8 | 9.7413e-9 | 53.3 | 329 |
| POPM | GU | HHN | 3.6840e-6 | 8.5862e-7 | 0.0000e+0 | 6.2492e-7 | 1.0501e-6 | 1.0501e-6 | 1.6687e-5 | 1.7429e-6 | 1.0593e-7 | 1.9964e-8 | 53.3 | 329 |
| POPM | GU | HHE | 3.6682e-6 | 5.4012e-7 | 0.0000e+0 | 4.4502e-7 | 7.3022e-7 | 9.9009e-7 | 7.6058e-6 | 1.7647e-6 | 1.1224e-7 | 1.2931e-8 | 53.3 | 329 |
| MAIM | GU | HHZ | 8.6821e-7 | 1.4179e-7 | 0.0000e+0 | 1.2084e-7 | 2.1713e-7 | 2.8501e-7 | 2.4311e-6 | 5.1197e-7 | 5.1061e-8 | 5.9025e-9 | 57.8 | 303 |
| MAIM | GU | HHN | 1.3380e-6 | 1.8818e-7 | 0.0000e+0 | 1.4656e-7 | 2.4472e-7 | 2.4472e-7 | 3.1587e-6 | 5.5107e-7 | 4.7218e-8 | 4.7375e-9 | 57.8 | 303 |
| MAIM | GU | HHE | 1.5313e-6 | 2.6373e-7 | 0.0000e+0 | 1.2068e-7 | 2.3259e-7 | 3.1663e-7 | 3.4849e-6 | 4.2242e-7 | 5.5153e-8 | 6.2766e-9 | 57.8 | 303 |
| MSSA | IV | HHZ | 9.6673e-8 | 1.7011e-8 | 0.0000e+0 | 8.6834e-9 | 2.5016e-8 | 4.7599e-8 | 1.6756e-7 | 3.4336e-8 | 2.4916e-8 | 1.4838e-9 | 147.2 | 301 |
| MSSA | IV | HHN | 2.3236e-7 | 2.8337e-8 | 0.0000e+0 | 8.1252e-9 | 2.5902e-8 | 2.5902e-8 | 1.1635e-7 | 2.7556e-8 | 3.4262e-8 | 2.3356e-9 | 147.2 | 301 |
| MSSA | IV | HHE | 2.7554e-7 | 2.5473e-8 | 0.0000e+0 | 7.9928e-9 | 2.5499e-8 | 5.5114e-8 | 9.7748e-8 | 2.4925e-8 | 3.6648e-8 | 2.9149e-9 | 147.2 | 301 |
| *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) | ||||||||||||||
Italiano
