MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.6
2021-04-11 02:57:28 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-04-12 08:42:47

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Earthquake info - Manual location
Event - ID :210411025702
Magnitude (ML) :0.6 +/- 0.1
Origin Time :2021-04-11 02:57:28.726 (UTC)
Location : Latitude: 44.499 N, Longitude: 7.254 E
Area :Alpi Cozie
Depth (km) :12.48
Distances (km) : 1.0 --- San Damiano Macra
3.5 --- Cartignano
6.0 --- Macra
6.1 --- Celle di Macra
7.4 --- Roccabruna
8.4 --- Frassino
8.8 --- Melle
8.9 --- Valmala
9.0 --- Pradleves
9.3 --- Dronero
10.1 --- Stroppo
10.2 --- Villar San Costanzo
10.2 --- Sampeyre
10.4 --- Castelmagno
11.3 --- Monterosso Grana
11.7 --- Brossasco
11.8 --- Montemale di Cuneo
13.3 --- Venasca
13.4 --- Marmora
13.8 --- Elva

Quality location estimate: Erh: 0.6 km, Erz: 0.9 km, Nf: 28, Gap: 120 °, Rms: 0.30


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.
PZZGU2021-04-11 02:57:32.1400.00800.011.722021-04-11 02:57:34.0500.0501-0.510.9417.7
STVGU2021-04-11 02:57:34.4470.0200-0.001.702021-04-11 02:57:37.6140.1324-0.820.5531.7
ENRGU2021-04-11 02:57:35.0500.0180-0.001.672021-04-11 02:57:39.2600.1043-0.201.0435.4
SURFFR2021-04-11 02:57:35.7800.01900.021.572021-04-11 02:57:40.2000.1123-0.690.7437.2
BHBGU2021-04-11 02:57:35.6500.0200-0.011.642021-04-11 02:57:39.9500.1193-0.480.9139.6
ISOFR2021-04-11 02:57:36.6600.02010.530.012021-04-11 02:57:41.1300.1213-0.061.1840.8
GBOSGU2021-04-11 02:57:38.5420.02000.021.412021-04-11 02:57:44.8550.0400-0.500.9056.3
TURFFR2021-04-11 02:57:39.8790.02000.190.522021-04-11 02:57:47.0090.0400-0.520.8960.6
RRLGU2021-04-11 02:57:39.5480.0200-0.091.292021-04-11 02:57:46.6950.0400-0.660.7761.3
SAOFFR2021-04-11 02:57:40.0680.0200-0.011.392021-04-11 02:57:47.1440.1002-1.000.3563.2
MVIFFR2021-04-11 02:57:40.6970.0200-0.470.922021-04-11 02:57:49.4470.1002-0.740.6868.6
RSPGU2021-04-11 02:57:40.5900.0200-0.510.922021-04-11 02:57:49.7280.1002-0.211.0673.5
ESCAFR2021-04-11 02:57:42.2580.0200-0.081.262021-04-11 02:57:50.9570.0400-1.030.3376.5
IMIGU2021-04-11 02:57:42.8340.0200-0.260.942021-04-11 02:57:52.7340.1002-0.720.6984.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.783.35e-117.7275
STV GUHH0.623.12e-231.7168
ENR GUHH0.848.68e-235.4156
BHB GUHH0.431.78e-239.61
ISO FRHH0.492.13e-240.8205
GBOS GUHH0.668.45e-356.3121
RRL GUHH0.567.33e-361.3322
SAOF FRHH0.621.16e-263.2157
RSP GUHH0.588.25e-373.51
IMI GUHH0.901.62e-284.0142


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.
(°)
PZZ GUHHZ4.8797e-56.5433e-62.6616e-66.1048e-73.3339e-71.3405e-41.0885e-56.1639e-71.2817e-717.7275
PZZ GUHHN6.4306e-56.4382e-62.5250e-66.9080e-74.2120e-75.8001e-51.2542e-56.6444e-71.2931e-717.7275
PZZ GUHHE3.1706e-54.2033e-62.3908e-68.1029e-74.0180e-75.6106e-51.2082e-56.6947e-71.1677e-717.7275
STV GUHHZ6.9087e-65.2596e-71.9261e-75.7191e-82.9007e-87.7270e-61.0587e-64.5560e-81.1385e-831.7168
STV GUHHN6.5839e-66.0866e-71.9388e-77.2095e-83.8158e-87.0584e-61.0097e-67.1392e-81.4964e-831.7168
STV GUHHE5.1752e-66.1046e-72.4809e-75.8998e-83.0445e-89.7294e-61.0530e-65.4661e-81.2563e-831.7168
ENR GUHHZ1.3366e-51.3672e-63.4756e-71.3528e-76.0828e-81.4136e-51.6449e-61.1150e-72.5607e-835.4156
ENR GUHHN2.7154e-52.6387e-66.3785e-71.7672e-78.4392e-84.6557e-52.9942e-61.6052e-74.5943e-835.4156
ENR GUHHE3.7481e-53.0925e-66.5712e-71.5393e-79.5465e-83.1715e-53.1237e-62.1493e-76.1648e-835.4156
BHB GUHHZ2.5622e-64.1453e-71.6658e-74.7503e-83.1772e-87.2180e-67.5261e-75.4025e-89.0305e-939.61
BHB GUHHN2.1463e-62.9864e-71.4398e-74.4293e-82.3521e-86.1122e-67.4466e-74.8879e-86.6435e-939.61
BHB GUHHE3.3114e-64.0611e-71.7712e-75.4700e-83.1142e-85.2749e-68.7944e-76.0044e-88.6648e-939.61
ISO FRHHZ4.0877e-64.6529e-71.8911e-74.6772e-82.4993e-85.2109e-68.2139e-74.6220e-87.5222e-940.8205
ISO FRHHN2.8257e-64.2813e-71.5121e-73.4975e-82.1797e-86.1643e-66.6611e-74.5460e-81.0122e-840.8205
ISO FRHHE4.6666e-65.4877e-71.7083e-74.8783e-82.3524e-86.4502e-67.2530e-75.0428e-81.2338e-840.8205
GBOS GUHHZ1.3491e-61.8319e-77.9676e-82.3802e-81.8563e-82.0065e-64.7930e-72.7752e-84.0720e-956.3121
GBOS GUHHN9.6455e-71.1872e-76.8458e-82.3033e-81.8645e-82.4547e-64.3680e-73.4005e-83.6871e-956.3121
GBOS GUHHE9.9665e-71.6001e-78.6723e-82.5687e-81.4301e-82.7256e-63.7488e-72.1812e-84.1997e-956.3121
RRL GUHHZ3.7632e-76.0119e-83.3995e-81.5386e-81.3476e-88.2009e-72.2209e-72.3660e-82.0074e-961.3322
RRL GUHHN4.0670e-79.4351e-87.7097e-82.5093e-81.2533e-81.4428e-63.9105e-71.6435e-82.4386e-961.3322
RRL GUHHE4.1802e-77.5690e-85.5756e-82.2727e-81.6990e-81.1521e-62.7732e-72.3177e-82.1531e-961.3322
SAOF FRHHZ5.2383e-79.5941e-86.6734e-82.9904e-82.3499e-81.5361e-64.0433e-73.6171e-83.3156e-963.2157
SAOF FRHHN5.4968e-79.0769e-88.0274e-83.3332e-81.8833e-81.4273e-64.0768e-72.2975e-84.4537e-963.2157
SAOF FRHHE8.3080e-71.0884e-79.3258e-84.6812e-83.7102e-81.2993e-66.7832e-74.2417e-84.0015e-963.2157
RSP GUHHZ5.1959e-77.7267e-84.3072e-81.2609e-88.5602e-91.4626e-61.5987e-71.5802e-82.3309e-973.51
RSP GUHHN9.2486e-71.3790e-76.9894e-81.8770e-81.0656e-82.2752e-62.3319e-71.7044e-83.3605e-973.51
RSP GUHHE6.3133e-71.0479e-75.0525e-81.4930e-81.0507e-82.2847e-61.8301e-71.5215e-82.8624e-973.51
IMI GUHHZ1.3258e-61.6316e-78.7251e-84.8772e-83.0833e-83.0427e-64.1015e-73.6651e-86.7828e-984.0142
IMI GUHHN2.3480e-62.7479e-71.4217e-77.2295e-85.1496e-85.6937e-69.2465e-77.6495e-86.0894e-984.0142
IMI GUHHE2.0006e-62.1549e-76.8852e-84.1821e-83.2076e-82.7929e-63.0448e-73.6434e-85.3662e-984.0142
*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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