MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.4
2021-07-26 03:52:05 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-07-26 11:13:44

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Earthquake info - Manual location
Event - ID :210726035054
Magnitude (ML) :0.4 +/- 0.2
Origin Time :2021-07-26 03:52:05.239 (UTC)
Location : Latitude: 44.869 N, Longitude: 6.765 E
Area :Alpi Cozie
Depth (km) :6.92
Distances (km) : 8.0 --- Claviere
9.6 --- Cesana Torinese
11.0 --- Sauze di Cesana
13.4 --- Sestriere
19.1 --- Oulx
19.2 --- Sauze d Oulx
21.2 --- Pragelato
22.5 --- Prali
23.8 --- Bardonecchia
24.0 --- Salza di Pinerolo
24.6 --- Salbertrand
25.1 --- Massello
28.6 --- Exilles
28.6 --- Bobbio Pellice
28.7 --- Perrero
28.9 --- Usseaux
29.3 --- Fenestrelle
31.6 --- Villar Pellice
32.6 --- Roure
32.9 --- Chiomonte

Quality location estimate: Erh: 0.8 km, Erz: 1 km, Nf: 18, Gap: 99 °, Rms: 0.17


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.
RRLGU2021-07-26 03:52:07.9800.00900.250.722021-07-26 03:52:09.4190.0270-0.011.8511.0
OGAGFR2021-07-26 03:52:09.6600.01300.011.882021-07-26 03:52:11.6700.0631-1.090.1221.5
BNIMN2021-07-26 03:52:10.0200.0180-0.001.872021-07-26 03:52:12.7860.3387-0.550.5122.7
BHBGU2021-07-26 03:52:13.2700.02310.240.812021-07-26 03:52:17.8900.2807-0.570.4640.2
SURFFR2021-07-26 03:52:13.5300.0623-0.021.582021-07-26 03:52:19.4630.2146-0.200.9443.9
PZZGU2021-07-26 03:52:14.5100.02710.111.382021-07-26 03:52:20.2370.1885-0.830.2449.6
RSPGU2021-07-26 03:52:15.1900.02000.480.132021-07-26 03:52:21.2420.0400-0.031.3650.8
LSDGU2021-07-26 03:52:18.3400.0371-0.021.462021-07-26 03:52:27.3000.2166-0.091.0072.3
ISOFR2021-07-26 03:52:19.1900.0200-0.340.522021-07-26 03:52:29.6050.04000.021.1679.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
RRL GUHH0.692.56e-111.019
OGAG FRHH0.558.14e-221.5243
BHB GUHH0.159.04e-340.295
PZZ GUHH0.643.45e-249.6145
RSP GUHH0.258.38e-350.852
LSD GUHH0.516.79e-372.324
ISO FRHH0.373.91e-379.8163


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.
(°)
RRL GUHHZ3.8907e-54.6728e-69.9729e-73.5074e-71.8300e-74.5355e-54.7351e-63.4997e-78.4208e-811.019
RRL GUHHN3.4085e-54.4127e-61.5992e-65.5936e-72.6006e-75.3020e-59.2780e-64.1474e-79.4356e-811.019
RRL GUHHE2.9452e-54.4887e-61.8708e-66.0083e-73.9722e-78.3458e-57.9920e-66.8415e-71.2255e-711.019
OGAG FRHHZ4.1227e-67.9745e-74.3755e-71.0508e-75.7324e-81.3530e-51.9091e-69.5748e-81.8667e-821.5243
OGAG FRHHN3.8700e-69.6146e-76.2783e-72.5871e-71.4851e-78.9150e-62.9155e-62.2584e-73.1293e-821.5243
OGAG FRHHE2.1262e-66.2246e-73.4885e-71.0364e-75.2514e-85.0635e-62.3901e-67.1191e-81.4375e-821.5243
BHB GUHHZ1.8053e-62.0130e-78.1094e-83.2213e-82.1089e-83.4770e-63.4841e-74.2440e-84.7589e-940.295
BHB GUHHN1.1573e-61.5392e-77.3068e-82.8043e-81.3556e-82.8882e-62.4606e-72.3807e-83.1828e-940.295
BHB GUHHE1.3674e-61.5608e-77.4687e-83.3525e-81.3605e-83.5331e-62.2021e-72.1718e-83.3932e-940.295
PZZ GUHHZ2.0955e-64.2417e-72.4123e-75.9565e-83.0070e-84.6547e-61.5771e-64.9636e-89.2506e-949.6145
PZZ GUHHN2.3251e-64.3570e-72.6060e-76.5391e-83.3679e-84.8967e-61.2132e-66.2970e-81.0431e-849.6145
PZZ GUHHE2.1576e-64.7966e-73.3797e-77.6436e-84.1044e-88.6422e-61.8848e-66.2665e-81.1061e-849.6145
RSP GUHHZ1.5802e-61.6509e-74.3082e-81.8346e-89.0583e-91.8424e-61.6009e-71.5573e-82.9473e-950.852
RSP GUHHN1.7741e-62.0772e-75.9347e-82.1563e-81.0796e-82.7623e-62.7057e-71.4965e-83.6471e-950.852
RSP GUHHE1.4748e-61.7741e-77.7052e-82.3632e-81.3696e-83.6251e-62.3664e-72.3845e-84.0606e-950.852
LSD GUHHZ9.4063e-78.4395e-83.5935e-81.0801e-84.9821e-91.1522e-61.5942e-78.9023e-91.9229e-972.324
LSD GUHHN8.8853e-71.0324e-74.7371e-81.7595e-81.4131e-81.6358e-62.7790e-72.2908e-82.6362e-972.324
LSD GUHHE8.8858e-71.0547e-76.8797e-81.8217e-81.1846e-81.6151e-64.9146e-71.9765e-83.6082e-972.324
ISO FRHHZ3.0774e-74.8017e-83.2020e-89.9211e-97.2515e-97.0300e-71.3216e-71.3826e-81.1303e-979.8163
ISO FRHHN3.0895e-74.9036e-82.4470e-81.0569e-82.0117e-87.1021e-71.0559e-74.5787e-83.2570e-979.8163
ISO FRHHE3.8583e-76.1669e-82.9581e-81.2486e-87.0388e-98.6261e-71.5697e-79.8693e-91.6685e-979.8163
*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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