MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.5
2021-02-28 05:29:00 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-03-01 08:15:49

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Earthquake info - Manual location
Event - ID :210228052826
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2021-02-28 05:29:00.445 (UTC)
Location : Latitude: 44.572 N, Longitude: 6.678 E
Area :Alpi Cozie
Depth (km) :5.77
Distances (km) : 26.8 --- Bellino
26.9 --- Acceglio
28.3 --- Pontechianale
28.3 --- Argentera
31.1 --- Casteldelfino
31.4 --- Prazzo
32.8 --- Elva
34.5 --- Canosio
35.2 --- Marmora
36.2 --- Stroppo
37.8 --- Pietraporzio
40.4 --- Macra
40.5 --- Crissolo
40.5 --- Sampeyre
40.7 --- Sambuco
40.9 --- Celle di Macra
41.3 --- Claviere
42.2 --- Oncino
42.6 --- Ostana
43.3 --- Cesana Torinese

Quality location estimate: Erh: 1.3 km, Erz: 1.4 km, Nf: 20, Gap: 190 °, Rms: 0.19


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.
SURFFR2021-02-28 05:29:04.2400.00900.280.902021-02-28 05:29:06.5800.0521-0.001.5215.8
OGAGFR2021-02-28 05:29:05.9400.0180-0.021.512021-02-28 05:29:09.8300.0802-0.021.3726.9
PZZGU2021-02-28 05:29:07.5650.0200-0.001.542021-02-28 05:29:12.4300.1063-0.280.6336.2
RRLGU2021-02-28 05:29:08.5750.02000.131.332021-02-28 05:29:14.1400.11930.011.2840.6
ISOFR2021-02-28 05:29:10.3500.02710.101.412021-02-28 05:29:16.4200.1584-0.520.3152.7
BHBGU2021-02-28 05:29:11.1400.02910.380.752021-02-28 05:29:17.9600.1635-0.121.0155.1
STVGU2021-02-28 05:29:11.8660.02000.051.462021-02-28 05:29:19.3990.0400-0.300.6363.3
ENRGU2021-02-28 05:29:13.4440.08030.440.632021-02-28 05:29:21.6040.2005-0.140.9370.4
RSPGU2021-02-28 05:29:15.1160.02000.291.032021-02-28 05:29:25.3410.04000.340.8879.3
TURFFR2021-02-28 05:29:16.6770.02000.410.722021-02-28 05:29:26.3500.4829-1.050.1687.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.831.01e-136.2102
RRL GUHH0.591.82e-240.613
ISO FRHH0.237.04e-352.7145
BHB GUHH0.185.16e-355.157
STV GUHH0.658.54e-363.3125
ENR GUHH0.731.65e-270.4123
RSP GUHH0.414.72e-379.336


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 GUHHZ8.3304e-61.1855e-66.4983e-71.3921e-78.7269e-81.5939e-54.0776e-61.5331e-73.0486e-836.2102
PZZ GUHHN7.1348e-61.3932e-61.0562e-62.5309e-71.2529e-72.6048e-54.7412e-62.0175e-73.6463e-836.2102
PZZ GUHHE7.8383e-61.7876e-69.4875e-72.2503e-71.1645e-71.9036e-56.8348e-61.7817e-73.7942e-836.2102
RRL GUHHZ1.0730e-61.8518e-79.8931e-83.2049e-81.6166e-83.6637e-66.5300e-71.9994e-84.3187e-940.613
RRL GUHHN2.0664e-63.2692e-71.3851e-76.7018e-84.3706e-86.3397e-65.5598e-76.9186e-81.3340e-840.613
RRL GUHHE2.2111e-63.4325e-71.6348e-76.5333e-82.4806e-86.4343e-67.1599e-74.4185e-88.3472e-940.613
ISO FRHHZ1.9225e-61.7587e-76.2756e-81.5957e-81.1260e-82.7588e-62.2193e-71.9636e-83.4087e-952.7145
ISO FRHHN1.2157e-61.5988e-76.1202e-81.4637e-89.4905e-91.9910e-63.0094e-71.5020e-83.6047e-952.7145
ISO FRHHE1.6909e-61.4562e-75.7780e-82.0170e-81.2088e-81.7544e-62.4590e-72.1225e-83.2183e-952.7145
BHB GUHHZ8.3393e-71.1832e-75.6186e-81.7877e-82.3284e-82.9548e-61.9401e-75.3043e-83.1778e-955.157
BHB GUHHN6.0571e-78.5329e-85.1621e-81.7642e-81.4164e-81.4930e-62.1469e-73.1092e-82.6041e-955.157
BHB GUHHE7.3030e-79.5670e-84.6194e-81.5529e-81.5908e-81.9054e-61.4493e-73.5250e-81.9648e-955.157
STV GUHHZ1.0691e-61.3143e-76.4014e-81.9573e-81.6088e-83.1264e-62.2140e-72.2685e-82.8691e-963.3125
STV GUHHN1.2512e-61.4989e-77.5156e-82.7569e-83.3856e-83.7244e-63.2296e-77.0742e-86.0653e-963.3125
STV GUHHE1.1198e-61.4648e-76.3969e-82.0110e-81.2140e-83.4995e-62.4058e-71.7621e-83.2583e-963.3125
ENR GUHHZ1.5924e-61.5021e-75.3591e-81.7111e-81.2167e-83.6175e-61.7527e-71.9837e-83.2935e-970.4123
ENR GUHHN4.9297e-63.7568e-78.0111e-83.4604e-86.1199e-87.6008e-63.0735e-71.3427e-79.9827e-970.4123
ENR GUHHE6.1671e-65.6410e-78.9766e-83.0105e-82.1003e-84.2875e-63.9246e-74.2488e-81.0180e-870.4123
RSP GUHHZ4.5738e-75.3106e-82.6732e-81.3908e-87.1996e-99.4255e-71.1502e-71.0495e-81.2333e-979.336
RSP GUHHN5.7365e-77.4728e-83.7268e-81.1351e-89.2239e-91.7107e-61.4468e-71.7193e-81.8096e-979.336
RSP GUHHE6.5593e-79.9471e-84.3107e-81.3051e-89.2367e-92.4904e-61.0736e-71.3074e-82.6512e-979.336
*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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