MANUAL Location - Area: Alpi Graie , magnitude (ML): 0.7
2021-10-18 07:10:32 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-10-18 08:03:57

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Earthquake info - Manual location
Event - ID :211018071008
Magnitude (ML) :0.7 +/- 0.2
Origin Time :2021-10-18 07:10:32.882 (UTC)
Location : Latitude: 45.603 N, Longitude: 6.873 E
Area :Alpi Graie
Depth (km) :6.10
Distances (km) : 14.1 --- La Thuile
15.2 --- Valgrisenche
19.4 --- Rhemes-Notre-Dame
20.0 --- Pre -Saint-Didier
21.4 --- Morgex
22.2 --- La Salle
22.5 --- Courmayeur
22.7 --- Rhemes-Saint-Georges
24.0 --- Avise
25.4 --- Arvier
26.1 --- Saint-Nicolas
26.2 --- Valsavarenche
26.3 --- Introd
28.3 --- Villeneuve
30.2 --- Saint-Pierre
30.9 --- Aymavilles
32.6 --- Sarre
33.6 --- Jovencan
33.9 --- Ceresole Reale
34.1 --- Saint-Rhemy-En-Bosses

Quality location estimate: Erh: 1.4 km, Erz: 2 km, Nf: 22, Gap: 101 °, Rms: 0.26


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.
RSLFR2021-10-18 07:10:38.1800.01700.710.002021-10-18 07:10:40.4800.0762-0.011.6922.8
MRGEIV2021-10-18 07:10:38.1000.01100.001.842021-10-18 07:10:41.2620.1303-0.310.9524.8
LSDGU2021-10-18 07:10:38.2100.01300.021.792021-10-18 07:10:41.0300.0782-0.710.5227.2
BLANCGU2021-10-18 07:10:38.5260.0602-0.211.212021-10-18 07:10:42.6800.0832-0.011.6028.8
CIROGU2021-10-18 07:10:42.5430.0200-0.830.492021-10-18 07:10:48.5500.2046-1.760.0554.8
RSPGU2021-10-18 07:10:43.7600.02910.121.112021-10-18 07:10:49.9700.3237-0.970.4459.6
BNIMN2021-10-18 07:10:44.2420.0803-0.161.432021-10-18 07:10:52.0900.0400-0.191.2763.4
DIXCH2021-10-18 07:10:45.2940.0200-0.121.552021-10-18 07:10:52.9300.1002-1.220.2367.7
TRAVGU2021-10-18 07:10:45.2190.0200-0.021.632021-10-18 07:10:52.7190.0400-0.590.6069.2
RRLGU2021-10-18 07:10:46.4510.0200-0.171.402021-10-18 07:10:55.2170.0400-0.840.5076.6
BHBGU2021-10-18 07:10:48.8760.02000.140.992021-10-18 07:10:59.0100.3337-0.630.7190.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MRGE IVHH0.727.94e-224.838
LSD GUHH0.707.45e-227.2128
BLANCGUHH0.302.71e-228.810
CIRO GUHH0.689.72e-354.890
RSP GUHH0.591.34e-259.6149
DIX CHHH1.032.62e-267.738
TRAV GUHH0.601.09e-269.298
RRL GUHH0.635.33e-376.6185
BHB GUHH0.949.85e-390.9160


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.
(°)
RSL FRHHZ2.7664e-62.8531e-79.7309e-83.4303e-81.4518e-83.2788e-63.2299e-72.5024e-85.3423e-922.8296
RSL FRHHN4.5931e-64.8063e-71.5388e-74.5957e-82.7443e-87.1030e-61.0231e-64.7674e-89.8340e-922.8296
RSL FRHHE4.2651e-64.8653e-71.5494e-74.4273e-82.1980e-86.4521e-66.5961e-74.0676e-88.9845e-922.8296
MRGE IVHHZ1.8774e-52.0960e-63.5222e-79.3466e-85.4601e-81.3203e-51.4794e-61.3590e-73.6576e-824.838
MRGE IVHHN4.0358e-52.9417e-64.6933e-71.4084e-77.7195e-82.9363e-51.4766e-61.8318e-75.7588e-824.838
MRGE IVHHE2.5527e-52.6491e-63.1957e-79.7957e-84.7989e-81.9216e-51.3615e-61.4157e-73.5880e-824.838
LSD GUHHZ8.1878e-68.9728e-72.4097e-76.9298e-83.4430e-87.7237e-69.3319e-75.8475e-81.5773e-827.2128
LSD GUHHN1.7679e-51.9415e-64.0547e-71.4295e-78.3707e-82.3801e-51.4926e-61.4934e-73.6328e-827.2128
LSD GUHHE1.8704e-52.1670e-65.2561e-71.5118e-79.6871e-82.1820e-52.6727e-61.7841e-73.5307e-827.2128
BLANCGUHHZ2.7165e-63.3831e-71.4960e-75.3022e-82.3904e-86.9775e-65.8279e-73.8112e-86.6196e-928.810
BLANCGUHHN4.8021e-66.1545e-71.8199e-78.0598e-84.4101e-81.3359e-58.0160e-77.2573e-81.5367e-828.810
BLANCGUHHE2.9989e-64.3592e-72.3459e-71.1280e-76.3622e-81.0183e-51.0688e-67.6823e-81.0588e-828.810
CIRO GUHHZ1.1633e-61.5145e-75.8620e-82.0144e-89.9027e-93.0084e-62.5248e-71.5767e-83.1053e-954.890
CIRO GUHHN2.2318e-61.6823e-77.9172e-82.2872e-81.2512e-83.2948e-64.3331e-71.9321e-83.7858e-954.890
CIRO GUHHE1.1439e-61.0495e-74.2407e-82.0774e-81.1728e-82.0524e-61.5995e-71.3355e-82.2942e-954.890
RSP GUHHZ1.8328e-62.0281e-77.1617e-82.6984e-81.3635e-82.4417e-62.4262e-72.2490e-84.3784e-959.6149
RSP GUHHN2.5545e-62.6902e-79.1198e-82.9879e-81.4969e-83.1210e-63.7659e-72.6528e-84.4654e-959.6149
RSP GUHHE1.7372e-62.4413e-71.2951e-74.1339e-81.8661e-84.5569e-66.3043e-72.6519e-85.3748e-959.6149
DIX CHHHZ2.0241e-62.3685e-71.5184e-75.1465e-82.3235e-83.3215e-68.5199e-73.2888e-85.5687e-967.738
DIX CHHHN2.7788e-63.6429e-72.6601e-71.2026e-73.9212e-83.9055e-61.4368e-65.5195e-81.0433e-867.738
DIX CHHHE2.9398e-64.5251e-71.8807e-76.2003e-82.4744e-86.9951e-69.8158e-73.9119e-89.2325e-967.738
TRAV GUHHZ1.2177e-61.7317e-76.1165e-82.5559e-81.4508e-82.3355e-62.7129e-71.7976e-83.6313e-969.298
TRAV GUHHN1.8290e-62.2426e-79.0360e-82.7529e-81.4109e-83.6611e-64.2429e-72.1057e-84.2857e-969.298
TRAV GUHHE1.3919e-61.5875e-78.4216e-82.5756e-81.2220e-83.2846e-64.1357e-71.8690e-83.4985e-969.298
RRL GUHHZ2.5955e-73.6653e-82.4960e-81.3080e-87.9752e-98.1950e-71.1435e-71.1551e-89.5100e-1076.6185
RRL GUHHN3.0097e-75.5151e-84.5630e-82.2711e-88.2805e-98.9647e-72.2168e-71.1649e-81.4708e-976.6185
RRL GUHHE3.1039e-74.9428e-84.6019e-82.6558e-89.8845e-96.3025e-72.5802e-71.3265e-81.4367e-976.6185
BHB GUHHZ7.2320e-71.3390e-77.5275e-83.4243e-82.1909e-81.9212e-62.0988e-74.3576e-84.4693e-990.9160
BHB GUHHN6.5122e-79.6061e-85.9317e-82.6865e-81.3242e-82.0431e-61.9785e-72.3078e-82.3495e-990.9160
BHB GUHHE1.0708e-61.0622e-76.6202e-84.9937e-83.3745e-88.6149e-72.5396e-76.4964e-83.6387e-990.9160
*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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