MANUAL Location - Area: Colline Metallifere , magnitude (ML): 2.2
2021-07-24 18:40:40 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-07-26 10:49:11

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Earthquake info - Manual location
Event - ID :210724184026
Magnitude (ML) :2.2 +/- 0.2
Origin Time :2021-07-24 18:40:40.854 (UTC)
Location : Latitude: 43.322 N, Longitude: 10.905 E
Area :Colline Metallifere
Depth (km) :6.01
Distances (km) : 3.4 --- Pomarance
9.8 --- Volterra
11.5 --- Casole d Elsa
12.5 --- Castelnuovo di Val di Cecina
13.0 --- Radicondoli
14.8 --- Montecatini Val di Cecina
19.8 --- San Gimignano
19.9 --- Monterotondo Marittimo
21.2 --- Colle di Val d Elsa
22.0 --- Guardistallo
22.2 --- Monteverdi Marittimo
22.2 --- Lajatico
22.6 --- Montescudaio
23.0 --- Montieri
23.4 --- Casale Marittimo
23.7 --- Chiusdino
24.6 --- Gambassi Terme
25.1 --- Riparbella
25.4 --- Bibbona
25.7 --- Poggibonsi

Quality location estimate: Erh: 1.9 km, Erz: 1.9 km, Nf: 31, Gap: 160 °, Rms: 0.33


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.
CSNTIV2021-07-24 18:40:48.1300.0241-0.091.272021-07-24 18:40:53.4100.1173-0.021.3435.9
OSSCIV2021-07-24 18:40:48.3690.02000.541.072021-07-24 18:40:53.3440.04000.580.9836.0
PIIIV2021-07-24 18:40:50.9100.0291-0.021.432021-07-24 18:40:57.9690.2046-0.160.9854.3
MAIMGU2021-07-24 18:40:54.4600.04010.421.202021-07-24 18:41:03.5900.23460.131.2373.9
RUFIIV2021-07-24 18:40:54.9800.04020.111.442021-07-24 18:41:05.0500.23960.171.2275.5
POPMGU2021-07-24 18:40:55.8800.04820.640.832021-07-24 18:41:05.6500.41380.061.0081.5
CELBIV2021-07-24 18:40:54.4100.0412-1.430.052021-07-24 18:41:03.3400.2967-3.080.0085.5
BDIIV2021-07-24 18:40:56.3800.04620.161.422021-07-24 18:41:07.3900.27270.121.1586.2
ASQUIV2021-07-24 18:40:57.2200.04620.041.402021-07-24 18:41:08.8890.04000.091.2788.9
SEIIV2021-07-24 18:40:57.5300.04720.221.382021-07-24 18:41:09.9270.04000.181.2889.4
SARMGU2021-07-24 18:40:59.5500.05520.471.152021-07-24 18:41:12.6500.33870.381.01104.3
EQUIGU2021-07-24 18:41:00.2000.0582-0.001.312021-07-24 18:41:13.4400.4369-0.750.38111.7
ZCCAIV2021-07-24 18:41:02.9800.06031.190.112021-07-24 18:41:17.5970.04000.331.14114.7
GSCLGU2021-07-24 18:41:02.3600.06130.451.162021-07-24 18:41:17.0710.04000.011.11117.3
MORSIFR2021-07-24 18:41:02.1800.1717-0.950.112021-07-24 18:41:17.6290.0400-1.930.00131.8
GRAMGU2021-07-24 18:41:06.6000.10040.820.552021-07-24 18:41:23.8730.0400-0.031.01146.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
OSSC IVHH1.968.05e-136.051
PII IVHH2.135.16e-154.3326
MAIM GUHH2.162.60e-173.9333
POPM GUHH2.164.70e-181.5352
BDI IVHH2.052.01e-186.2343
ASQU IVHH2.121.75e-188.953
SEI IVHH2.483.92e-189.424
SARM GUEH2.362.50e-1104.3337
EQUI GUHH1.966.91e-2111.7327
ZCCA IVHH2.149.78e-2114.73
GSCL GUHH2.492.07e-1117.3348
MORSIFRHH2.075.92e-2131.8252
GRAM GUHH2.391.68e-1146.5333


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 IVHHZ3.9639e-57.3498e-64.4091e-62.5220e-61.2774e-63.8234e-53.5316e-51.2360e-61.5346e-736.051
OSSC IVHHN3.7528e-56.6370e-66.5877e-63.3487e-61.8591e-66.3456e-53.6970e-52.0960e-62.0853e-736.051
OSSC IVHHE3.9539e-58.8762e-67.7432e-63.5926e-61.5837e-67.7730e-54.2210e-52.0098e-62.5208e-736.051
PII IVHHZ1.2811e-52.6976e-62.4804e-68.6567e-74.1375e-73.4866e-51.3487e-55.8913e-77.3390e-854.3326
PII IVHHN1.5106e-54.7136e-64.5642e-61.9252e-67.8775e-72.7826e-53.5179e-51.0757e-61.4073e-754.3326
PII IVHHE1.7662e-54.6316e-63.8761e-61.2124e-66.3791e-74.6808e-52.8487e-59.4603e-71.4103e-754.3326
MAIM GUHHZ1.4254e-53.5476e-62.4386e-69.0359e-73.6150e-76.4466e-51.3859e-54.8778e-77.0182e-873.9333
MAIM GUHHN1.3375e-52.6672e-62.4896e-61.2480e-65.1905e-75.7854e-51.4702e-56.7687e-78.6728e-873.9333
MAIM GUHHE1.4492e-53.3419e-62.0414e-66.8045e-73.1126e-74.4256e-51.4171e-54.6696e-78.4327e-873.9333
POPM GUHHZ1.3045e-53.1375e-62.2736e-68.6072e-74.3471e-73.4353e-51.0230e-56.9093e-76.9570e-881.5352
POPM GUHHN2.7185e-55.8897e-65.0087e-61.8926e-67.6889e-76.7918e-52.7969e-51.1103e-61.6896e-781.5352
POPM GUHHE2.0698e-55.1506e-64.7702e-61.3510e-65.8782e-74.7454e-53.6545e-58.3392e-71.2371e-781.5352
BDI IVHHZ5.8927e-61.2656e-61.1512e-65.0716e-72.0464e-71.3260e-55.7679e-62.3541e-73.6735e-886.2343
BDI IVHHN9.4858e-61.7816e-61.6673e-66.5877e-73.0451e-73.5182e-51.0024e-53.7488e-75.0590e-886.2343
BDI IVHHE7.8936e-62.4091e-61.9500e-69.4784e-73.4190e-72.9647e-51.0748e-54.1955e-76.5592e-886.2343
ASQU IVHHZ1.3204e-64.6160e-74.6136e-72.8190e-71.4241e-72.0833e-62.6114e-61.6542e-71.3391e-888.953
ASQU IVHHN1.3752e-66.2535e-76.0412e-73.3754e-71.4679e-73.5267e-64.8071e-61.6335e-71.7933e-888.953
ASQU IVHHE2.7862e-61.4638e-61.1539e-66.9569e-72.5790e-74.4875e-61.1584e-53.3298e-74.2194e-888.953
SEI IVHHZ7.9557e-62.6279e-63.1936e-61.7932e-66.8741e-71.0164e-52.4260e-59.1050e-77.8314e-889.424
SEI IVHHN6.1603e-62.9467e-63.0782e-62.3634e-67.8591e-71.1559e-51.9622e-59.7041e-79.9431e-889.424
SEI IVHHE4.6756e-62.1633e-62.1637e-61.5897e-66.0870e-76.1621e-61.3838e-57.0269e-77.2472e-889.424
SARM GUEHZ1.6491e-66.1853e-76.0631e-74.5539e-71.6660e-75.1963e-62.6120e-62.0931e-72.3862e-8104.3337
SARM GUEHN3.5268e-61.3595e-61.4113e-61.7541e-65.2321e-77.1515e-64.6607e-66.3423e-76.9160e-8104.3337
SARM GUEHE2.4742e-61.2176e-61.0465e-61.1300e-63.8038e-75.7039e-64.2907e-64.9801e-74.7030e-8104.3337
EQUI GUHHZ2.0659e-65.5498e-74.5984e-71.9642e-71.0517e-78.8056e-62.8378e-61.2644e-71.4168e-8111.7327
EQUI GUHHN1.7272e-63.4853e-72.8949e-71.4620e-77.6021e-85.9694e-61.2281e-61.1409e-71.2482e-8111.7327
EQUI GUHHE2.7387e-67.8704e-75.7414e-73.2224e-71.3255e-71.1416e-52.4330e-61.7442e-72.1872e-8111.7327
ZCCA IVHHZ1.7731e-65.6893e-76.0889e-75.3062e-72.7173e-73.6657e-63.8732e-62.6517e-73.3914e-8114.73
ZCCA IVHHN2.9884e-66.8136e-76.3595e-74.9080e-71.7432e-73.8978e-63.5815e-62.2370e-72.1389e-8114.73
ZCCA IVHHE2.6315e-65.1210e-75.2800e-73.8198e-71.3790e-72.9614e-62.5180e-61.5882e-71.9221e-8114.73
GSCL GUHHZ2.0826e-66.4592e-75.3057e-71.8611e-71.0713e-75.0637e-63.8393e-61.3475e-71.9977e-8117.3348
GSCL GUHHN3.7648e-61.4246e-61.3041e-66.2145e-72.3002e-79.3387e-68.5777e-62.8283e-74.1237e-8117.3348
GSCL GUHHE4.7665e-61.8074e-61.7882e-68.6061e-73.3186e-78.1008e-61.2432e-54.3330e-75.3632e-8117.3348
MORSIFRHHZ1.2477e-64.2649e-74.4153e-72.4141e-79.5610e-84.3186e-62.5765e-61.2468e-71.3414e-8131.8252
MORSIFRHHN1.9633e-65.4786e-75.2075e-72.4669e-79.8726e-86.4672e-63.5635e-61.1259e-71.6516e-8131.8252
MORSIFRHHE1.3531e-63.2021e-72.6113e-71.7260e-76.0401e-85.0139e-61.5996e-68.4409e-81.1938e-8131.8252
GRAM GUHHZ2.6461e-65.3310e-74.8757e-71.7496e-77.9867e-82.8721e-62.5050e-61.1814e-71.3628e-8146.5333
GRAM GUHHN3.8702e-65.5375e-75.2531e-72.3553e-79.2052e-83.2678e-63.6584e-61.2637e-71.3997e-8146.5333
GRAM GUHHE3.2236e-68.8112e-77.8266e-73.3434e-71.2897e-74.7938e-65.9600e-61.7892e-72.2685e-8146.5333
*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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