MANUAL Location - Area: Valdarno inferiore , magnitude (ML): 0.3
2021-10-20 17:14:24 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-10-21 06:35:02

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Earthquake info - Manual location
Event - ID :211020171359
Magnitude (ML) :0.3 +/- 0.2
Origin Time :2021-10-20 17:14:24.029 (UTC)
Location : Latitude: 43.864 N, Longitude: 10.407 E
Area :Valdarno inferiore
Depth (km) :9.76
Distances (km) : 5.7 --- Massarosa
8.2 --- Lucca
9.2 --- Vecchiano
11.5 --- Pescaglia
11.5 --- San Giuliano Terme
11.9 --- Camaiore
12.7 --- Viareggio
13.4 --- Capannori
15.0 --- Fabbriche di Vallico
16.3 --- Pisa
17.0 --- Borgo a Mozzano
17.2 --- Porcari
17.4 --- Stazzema
17.4 --- Pietrasanta
17.5 --- Calci
20.3 --- Villa Basilica
20.5 --- Seravezza
20.9 --- Vergemoli
20.9 --- Buti
21.0 --- Montecarlo

Quality location estimate: Erh: 1 km, Erz: 0.8 km, Nf: 14, Gap: 180 °, Rms: 0.08


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.
MAIMGU2021-10-20 17:14:26.8500.0110-0.001.922021-10-20 17:14:28.9620.0531-0.001.7713.2
PIIIV2021-10-20 17:14:26.9500.0110-1.390.012021-10-20 17:14:29.1150.0400-2.450.0020.9
CARDGU2021-10-20 17:14:28.1900.02000.081.442021-10-20 17:14:31.3700.17950.220.6621.5
BDIIV2021-10-20 17:14:29.4800.0180-0.031.752021-10-20 17:14:33.5800.0862-0.041.3128.7
POPMGU2021-10-20 17:14:30.6200.0221-0.011.792021-10-20 17:14:35.7100.10930.111.0235.9
SARMGU2021-10-20 17:14:30.7920.02000.011.802021-10-20 17:14:35.5700.1083-0.260.4537.1
EQUIGU2021-10-20 17:14:30.7120.0231-0.580.052021-10-20 17:14:35.7370.1173-0.930.0340.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MAIM GUHH0.311.02e-113.251
PII IVHH0.621.03e-120.9149
CARD GUHH0.486.96e-221.518
BDI IVHH0.092.10e-228.735
POPM GUHH0.354.01e-235.954
SARM GUEH0.141.38e-237.1359
EQUI GUHH0.351.58e-240.5329


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.
(°)
MAIM GUHHZ4.0701e-54.1627e-61.4910e-64.8784e-72.6214e-75.6359e-56.3418e-64.8817e-71.0628e-713.251
MAIM GUHHN1.8358e-52.2619e-68.4785e-72.5467e-71.5336e-73.9090e-52.9289e-62.6861e-75.2940e-813.251
MAIM GUHHE1.5529e-51.5939e-65.4638e-71.8286e-79.4808e-81.5746e-53.5470e-61.6147e-73.0236e-813.251
PII IVHHZ7.3396e-61.1217e-66.2796e-71.7092e-79.2145e-81.7685e-51.7518e-61.4880e-72.8963e-820.9149
PII IVHHN1.8731e-52.7636e-67.5091e-72.5505e-71.4771e-73.1553e-53.2407e-62.8195e-75.9881e-820.9149
PII IVHHE1.6442e-52.3494e-67.0467e-72.0788e-71.0670e-73.6041e-52.6908e-61.8364e-74.6950e-820.9149
CARD GUHHZ9.2128e-61.0033e-62.0243e-76.5793e-83.2321e-81.1740e-51.1105e-65.8327e-81.5977e-821.518
CARD GUHHN2.1097e-52.0126e-65.1700e-71.1608e-77.7276e-82.9449e-51.9963e-61.6677e-74.1240e-821.518
CARD GUHHE2.0872e-51.8044e-65.4470e-71.4377e-78.6945e-83.0868e-51.9516e-61.4668e-73.4462e-821.518
BDI IVHHZ4.6380e-65.5178e-71.3901e-74.0326e-82.3745e-85.2810e-67.3506e-73.8091e-81.0265e-828.735
BDI IVHHN3.7010e-65.0753e-71.7817e-75.4971e-83.1149e-81.0453e-56.6902e-75.2044e-81.0815e-828.735
BDI IVHHE3.9259e-64.4773e-72.0254e-75.7048e-82.8928e-89.5088e-66.0078e-73.7219e-87.6831e-928.735
POPM GUHHZ3.8841e-64.6439e-71.2323e-73.3873e-81.8504e-86.2191e-64.5395e-73.4415e-87.3584e-935.954
POPM GUHHN5.4034e-68.1121e-73.3402e-76.9076e-84.4659e-81.0682e-51.1157e-68.5420e-81.8623e-835.954
POPM GUHHE3.8777e-65.5143e-72.7000e-78.0335e-85.1991e-85.8220e-61.3750e-68.3076e-81.7930e-835.954
SARM GUEHZ1.3538e-61.7542e-77.3071e-82.6708e-81.4587e-82.9593e-63.2083e-72.3395e-84.0770e-937.1359
SARM GUEHN1.6748e-62.2946e-71.3674e-76.2317e-83.1901e-84.3436e-65.4730e-73.5352e-85.8495e-937.1359
SARM GUEHE1.6578e-61.9237e-78.2710e-86.0098e-83.1809e-82.9169e-63.8635e-73.8011e-85.3348e-937.1359
EQUI GUHHZ1.2994e-61.6251e-79.5006e-85.0630e-83.2225e-83.0741e-63.7994e-73.9028e-83.5011e-940.5329
EQUI GUHHN3.7329e-64.0324e-71.2705e-76.2671e-85.3349e-85.7829e-64.8822e-76.2349e-88.1808e-940.5329
EQUI GUHHE2.3816e-62.5765e-71.0931e-75.9898e-83.6486e-83.9551e-65.4056e-73.4803e-85.3273e-940.5329
*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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