MANUAL Location - Area: Alpi Graie , magnitude (ML): 0.9
2021-10-20 04:39:16 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-10-20 06:49:44

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Earthquake info - Manual location
Event - ID :211020043851
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2021-10-20 04:39:16.307 (UTC)
Location : Latitude: 45.342 N, Longitude: 7.369 E
Area :Alpi Graie
Depth (km) :6.01
Distances (km) : 0.9 --- Cantoira
3.3 --- Chialamberto
3.4 --- Ceres
5.5 --- Mezzenile
5.7 --- Ala di Stura
6.4 --- Pessinetto
7.1 --- Monastero di Lanzo
7.7 --- Groscavallo
8.5 --- Coassolo Torinese
9.2 --- Traves
11.1 --- Locana
11.3 --- Viu
11.7 --- Lanzo Torinese
11.7 --- Germagnano
12.6 --- Balme
13.1 --- Corio
13.4 --- Noasca
13.8 --- Lemie
14.1 --- Balangero
14.6 --- Ribordone

Quality location estimate: Erh: 1.1 km, Erz: 1.5 km, Nf: 26, Gap: 131 °, 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.
LSDGU2021-10-20 04:39:21.6100.18080.430.912021-10-20 04:39:24.4700.07120.001.5424.0
RSPGU2021-10-20 04:39:21.0300.01200.001.612021-10-20 04:39:23.6900.0701-0.590.6524.1
CIROGU2021-10-20 04:39:23.3200.0160-0.051.452021-10-20 04:39:27.3100.1023-0.710.5133.9
TRAVGU2021-10-20 04:39:23.3400.01700.171.222021-10-20 04:39:27.6500.1424-0.041.3235.8
MRGEIV2021-10-20 04:39:26.9800.02810.650.542021-10-20 04:39:32.5500.3227-0.440.8153.8
OGMOFR2021-10-20 04:39:26.6160.02000.051.552021-10-20 04:39:33.0340.1675-0.520.6956.0
BHBGU2021-10-20 04:39:26.6100.05220.370.872021-10-20 04:39:33.1900.1705-0.101.1957.3
REMYGU2021-10-20 04:39:27.7100.03010.570.672021-10-20 04:39:34.5100.17550.101.2758.2
BNIMN2021-10-20 04:39:28.0360.08030.251.162021-10-20 04:39:35.1230.0400-0.580.6463.3
RRLGU2021-10-20 04:39:28.0960.02000.081.512021-10-20 04:39:36.1400.0400-0.021.3265.7
SATIGU2021-10-20 04:39:30.3830.08030.820.262021-10-20 04:39:38.2310.0400-0.250.9971.5
DIXCH2021-10-20 04:39:31.4390.02000.530.742021-10-20 04:39:40.5450.0400-0.460.7682.6
MMKCH2021-10-20 04:39:32.6880.02000.341.022021-10-20 04:39:42.7820.0400-0.440.7991.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
RSP GUHH0.711.03e-124.1201
CIRO GUHH1.015.47e-233.928
TRAV GUHH0.877.69e-235.857
MRGE IVHH0.993.24e-253.8333
BHB GUHH0.801.99e-257.3188
REMY GUHH0.902.63e-258.2343
RRL GUHH0.647.64e-365.7224
SATI GUHH1.191.91e-271.533
MMK CHHH1.016.79e-391.830


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.
(°)
LSD GUHHZ5.9018e-66.8758e-72.7528e-78.1614e-84.1326e-81.2861e-51.3342e-67.0463e-81.2479e-824.0306
LSD GUHHN8.5825e-68.6419e-73.4446e-71.1534e-76.3717e-89.2891e-61.6423e-61.0581e-71.7959e-824.0306
LSD GUHHE8.5335e-61.0196e-64.0513e-71.4558e-76.6134e-81.3509e-51.3340e-69.8468e-81.8151e-824.0306
RSP GUHHZ1.5818e-51.8323e-64.7616e-71.2957e-77.1004e-82.5337e-51.6240e-61.5365e-73.9132e-824.1201
RSP GUHHN1.3384e-52.3170e-68.0028e-72.3569e-71.2110e-74.6522e-53.8913e-61.9738e-74.0042e-824.1201
RSP GUHHE1.3985e-51.7190e-68.2958e-72.1388e-71.1003e-73.2058e-53.1448e-61.7648e-73.8744e-824.1201
CIRO GUHHZ4.8569e-64.7978e-71.9999e-76.0077e-82.8062e-87.5270e-66.3174e-74.6530e-81.0099e-833.928
CIRO GUHHN8.6961e-69.7281e-71.8742e-75.4468e-82.9586e-81.0559e-56.9223e-76.7249e-81.9681e-833.928
CIRO GUHHE9.1806e-69.8309e-73.8459e-71.2229e-76.6173e-81.3580e-51.7529e-61.1190e-72.1396e-833.928
TRAV GUHHZ6.6134e-68.3209e-73.5309e-71.1832e-75.0251e-81.2239e-52.2236e-68.5432e-81.6254e-835.857
TRAV GUHHN1.0331e-51.2102e-63.9704e-71.0253e-76.5378e-81.5465e-51.3153e-61.2025e-72.8375e-835.857
TRAV GUHHE9.8215e-61.2504e-65.3345e-71.5770e-77.4951e-81.5703e-53.1980e-61.3432e-72.9573e-835.857
MRGE IVHHZ4.1622e-63.6338e-71.4902e-75.1061e-82.5182e-85.1690e-65.8492e-74.2741e-87.4175e-953.8333
MRGE IVHHN8.7734e-68.6762e-72.2372e-71.0755e-75.4310e-89.0040e-61.0639e-68.5211e-81.7323e-853.8333
MRGE IVHHE4.8565e-65.5106e-72.0555e-78.5100e-83.4756e-86.2859e-68.1993e-75.2307e-81.0795e-853.8333
BHB GUHHZ1.7478e-62.8408e-71.2709e-75.2575e-82.6133e-85.9954e-63.6804e-74.1464e-85.2725e-957.3188
BHB GUHHN2.5562e-63.7285e-71.8025e-76.5394e-82.9037e-81.1143e-56.6245e-74.9160e-88.4488e-957.3188
BHB GUHHE1.7629e-62.6633e-71.5013e-78.4704e-83.0971e-84.7774e-64.5514e-74.3447e-86.8770e-957.3188
REMY GUHHZ2.1989e-62.2437e-71.4946e-78.4711e-83.4168e-83.9661e-66.2735e-73.9441e-86.2862e-958.2343
REMY GUHHN3.4693e-64.8343e-72.1911e-78.5775e-84.5346e-81.0230e-51.3181e-66.1975e-81.0806e-858.2343
REMY GUHHE2.3901e-63.8336e-72.0798e-71.4166e-77.5022e-87.4869e-65.8469e-71.0261e-71.1538e-858.2343
RRL GUHHZ7.1621e-78.9656e-84.1309e-81.7041e-89.4186e-91.7492e-61.4784e-71.3046e-82.1510e-965.7224
RRL GUHHN9.0219e-71.3201e-76.8512e-82.6672e-81.1967e-82.7808e-63.0580e-71.6384e-82.8137e-965.7224
RRL GUHHE7.1024e-71.1901e-77.3954e-82.9022e-81.1845e-81.8803e-64.4667e-71.7276e-82.6315e-965.7224
SATI GUHHZ1.8198e-61.9046e-78.1975e-83.1875e-81.5183e-83.1498e-63.8954e-72.2091e-84.8528e-971.533
SATI GUHHN3.0623e-63.2848e-79.8783e-83.9600e-82.2045e-83.5426e-64.2925e-73.2635e-87.5174e-971.533
SATI GUHHE4.3054e-64.6681e-71.6276e-76.1133e-82.9691e-87.0889e-66.2241e-74.2220e-89.6228e-971.533
DIX CHHHZ2.9962e-64.3327e-72.4842e-78.1972e-84.0350e-85.4803e-61.1048e-66.0622e-89.8270e-982.62
DIX CHHHN4.7361e-66.0683e-72.3498e-78.8774e-83.5057e-88.5854e-61.2329e-67.2601e-81.4339e-882.62
DIX CHHHE5.1949e-65.0415e-72.6583e-79.1747e-83.9181e-86.7584e-61.3797e-66.2269e-81.1765e-882.62
MMK CHHHZ8.9735e-71.1980e-75.7316e-81.9441e-81.0704e-81.8295e-63.2943e-71.8203e-82.4806e-991.830
MMK CHHHN8.8456e-71.2641e-77.1695e-82.2807e-81.1760e-83.1404e-63.1909e-71.4911e-82.7364e-991.830
MMK CHHHE1.0090e-69.8986e-84.9811e-81.7150e-89.1883e-91.5082e-62.0270e-71.3523e-82.5162e-991.830
*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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