MANUAL Location - Area: Colline Metallifere , magnitude (ML): 1.3
2024-04-26 03:38:40 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2024-04-26 08:24:09

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Earthquake info - Manual location
Event - ID :240426033829
Magnitude (ML) :1.3 +/- 0.1
Origin Time :2024-04-26 03:38:40.071 (UTC)
Location : Latitude: 43.206 N, Longitude: 11.055 E
Area :Colline Metallifere
Depth (km) :15.99
Distances (km) : 6.2 --- Chiusdino
6.3 --- Radicondoli
8.9 --- Montieri
12.1 --- Castelnuovo di Val di Cecina
12.5 --- Monticiano
15.3 --- Casole d Elsa
16.2 --- Sovicille
17.4 --- Monterotondo Marittimo
18.0 --- Pomarance
21.8 --- Massa Marittima
23.5 --- Roccastrada
24.9 --- Colle di Val d Elsa
24.9 --- Monteriggioni
25.6 --- Siena
27.0 --- Volterra
27.7 --- Murlo
27.7 --- Monteverdi Marittimo
29.2 --- San Gimignano
29.8 --- Civitella Paganico
29.9 --- Monteroni d Arbia

Quality location estimate: Erh: 3.5 km, Erz: 2.1 km, Nf: 19, Gap: 291 °, 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.
CSNTIV2024-04-26 03:38:47.4400.0311-0.281.192024-04-26 03:38:53.0000.1143-0.271.2638.7
OSSCIV2024-04-26 03:38:48.0500.02000.031.462024-04-26 03:38:53.8260.04000.081.3541.8
PIIIV2024-04-26 03:38:53.1900.0452-0.171.472024-04-26 03:39:02.4250.4168-0.580.7273.3
RUFIIV2024-04-26 03:38:54.9200.0492-0.131.502024-04-26 03:39:05.9760.31070.051.0480.8
MAIMGU2024-04-26 03:38:56.5300.05520.141.182024-04-26 03:39:07.3300.2767-0.900.4092.2
POPMGU2024-04-26 03:38:57.6900.05820.320.682024-04-26 03:39:10.9110.04000.880.1297.7
BDIIV2024-04-26 03:38:58.4300.06130.021.392024-04-26 03:39:10.7300.3698-1.110.31103.4
CARDGU2024-04-26 03:38:58.2110.0803-0.061.452024-04-26 03:39:10.4070.0400-1.120.23103.4
LMDIV2024-04-26 03:38:59.8800.0934-0.231.292024-04-26 03:39:15.3700.34570.110.91111.3
EQUIGU2024-04-26 03:39:03.1920.08031.550.002024-04-26 03:39:17.4660.0400-0.251.06130.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
OSSC IVHH1.341.43e-141.824
PII IVHH1.294.00e-273.3323
MAIM GUHH1.292.12e-292.2330
POPM GUHH1.304.29e-297.7346
BDI IVHH1.171.70e-2103.4339
CARD GUHH1.462.64e-2103.4333
EQUI GUHH1.106.60e-3130.0326


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 IVHHZ1.0800e-51.3984e-66.6866e-72.9558e-71.1704e-71.3588e-53.4896e-61.5069e-72.5210e-841.824
OSSC IVHHN7.7145e-61.2291e-67.5589e-72.9220e-71.3296e-72.1430e-55.3814e-61.7714e-72.3210e-841.824
OSSC IVHHE8.4318e-61.6095e-61.3758e-64.2672e-71.7308e-72.1439e-56.5216e-62.5082e-74.2996e-841.824
PII IVHHZ1.1061e-61.9682e-71.3935e-74.7238e-81.9605e-83.7071e-68.4521e-72.8694e-84.8196e-973.3323
PII IVHHN1.2932e-63.6251e-73.3966e-71.1445e-75.3001e-85.0992e-63.1159e-67.1580e-81.1406e-873.3323
PII IVHHE1.6523e-64.4488e-73.1149e-71.0171e-74.2266e-86.2616e-61.8061e-66.5448e-81.0869e-873.3323
MAIM GUHHZ1.4240e-62.4121e-71.6006e-75.8274e-82.3050e-83.3722e-69.7713e-73.7970e-86.0671e-992.2330
MAIM GUHHN1.4771e-62.6467e-72.0440e-78.5826e-83.3451e-87.0829e-68.7931e-73.9689e-85.8158e-992.2330
MAIM GUHHE1.2897e-63.1195e-72.3187e-76.6449e-83.0741e-85.1971e-61.2680e-65.0186e-87.6598e-992.2330
POPM GUHHZ1.1927e-62.0803e-71.7151e-76.8103e-82.8904e-84.6434e-67.0914e-73.9209e-86.5237e-997.7346
POPM GUHHN2.2779e-65.7385e-74.0190e-71.3123e-76.2167e-86.9434e-62.1233e-68.6741e-81.4608e-897.7346
POPM GUHHE1.7813e-64.4112e-73.4766e-71.2219e-74.8369e-84.8653e-62.2660e-67.3920e-81.1508e-897.7346
BDI IVHHZ7.2008e-71.2588e-71.0369e-74.0649e-81.6626e-81.6671e-64.9109e-72.3270e-83.7414e-9103.4339
BDI IVHHN1.0882e-62.1940e-71.5198e-76.3892e-82.7237e-84.6744e-66.9841e-73.4742e-84.6784e-9103.4339
BDI IVHHE8.5120e-72.0451e-71.5956e-76.8187e-83.0211e-82.7541e-69.3310e-74.3798e-85.5726e-9103.4339
CARD GUHHZ1.1266e-61.8474e-71.2050e-75.1132e-82.2809e-83.2325e-65.1997e-73.1411e-84.6894e-9103.4333
CARD GUHHN2.4160e-63.4400e-72.5376e-76.2397e-83.2075e-86.9116e-61.3935e-64.3768e-88.0063e-9103.4333
CARD GUHHE2.0062e-63.3096e-72.3443e-79.2172e-85.0820e-88.0284e-69.6343e-78.1051e-87.7969e-9103.4333
EQUI GUHHZ3.8058e-78.9521e-86.1315e-82.5170e-82.0386e-81.1685e-63.0019e-73.5259e-82.4557e-9130.0326
EQUI GUHHN5.3447e-71.0732e-75.8962e-82.1792e-81.7361e-82.2313e-63.4879e-72.5085e-82.4653e-9130.0326
EQUI GUHHE3.7003e-76.9546e-85.5818e-82.0952e-81.3520e-81.2125e-61.9354e-71.6408e-82.0573e-9130.0326
*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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