MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.8
2025-04-27 21:44:31 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-28 08:04:51

20 km
Lat : Lon
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Earthquake info - Manual location
Event - ID :250427214405
Magnitude (ML) :0.8 +/- 0.2
Origin Time :2025-04-27 21:44:31.866 (UTC)
Location : Latitude: 45.878 N, Longitude: 7.002 E
Area :Alpi Pennine
Depth (km) :5.73
Distances (km) : 9.6 --- Courmayeur
12.6 --- Pre -Saint-Didier
13.5 --- Morgex
15.0 --- Saint-Rhemy-En-Bosses
15.5 --- La Salle
17.3 --- Saint-Oyen
18.2 --- La Thuile
18.7 --- Etroubles
21.5 --- Avise
21.9 --- Saint-Nicolas
22.2 --- Allein
23.1 --- Arvier
24.0 --- Ollomont
24.5 --- Doues
25.1 --- Gignod
25.1 --- Villeneuve
25.2 --- Introd
25.6 --- Saint-Pierre
25.7 --- Valpelline
26.2 --- Roisan

Quality location estimate: Erh: 1.4 km, Erz: 1.1 km, Nf: 34, Gap: 149 °, Rms: 0.40


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.
COURMFR2025-04-27 21:44:34.2200.00900.031.712025-04-27 21:44:35.1600.0300-0.541.4910.1
BLANCGU2025-04-27 21:44:34.4800.0090-0.011.742025-04-27 21:44:35.7030.0400-0.551.4811.1
MRGEIV2025-04-27 21:44:35.1700.0110-0.031.672025-04-27 21:44:36.8900.0451-0.521.4314.8
RSLFR2025-04-27 21:44:39.0000.02000.021.642025-04-27 21:44:43.1500.1123-0.651.0936.4
DIXCH2025-04-27 21:44:39.9320.02000.101.252025-04-27 21:44:44.8050.1153-0.511.1439.2
LSDGU2025-04-27 21:44:40.7380.0200-0.011.522025-04-27 21:44:45.9900.1775-0.810.8248.3
CIROGU2025-04-27 21:44:41.9000.0301-0.370.862025-04-27 21:44:47.9400.1635-1.570.1554.2
SENINCH2025-04-27 21:44:43.1340.0200-0.061.292025-04-27 21:44:50.3310.2346-0.780.8559.1
VANNICH2025-04-27 21:44:43.6040.02000.710.112025-04-27 21:44:49.5250.0400-0.970.5759.4
SATIGU2025-04-27 21:44:44.3600.03710.180.892025-04-27 21:44:52.1800.2787-1.020.6167.6
LATOIV2025-04-27 21:44:44.9760.0200-0.011.332025-04-27 21:44:52.7630.0400-1.040.5273.7
EMBDCH2025-04-27 21:44:44.8630.0200-0.551.242025-04-27 21:44:54.0050.2697-0.800.8274.6
MMKCH2025-04-27 21:44:46.0600.02000.460.322025-04-27 21:44:54.5280.0400-0.740.9277.3
SIMPLCH2025-04-27 21:44:47.5860.0200-0.260.922025-04-27 21:44:58.1990.0400-0.780.8688.5
FIESACH2025-04-27 21:44:51.1680.02000.290.682025-04-27 21:45:04.0180.0400-0.071.04105.8
BHBGU2025-04-27 21:44:52.3050.02000.360.552025-04-27 21:45:05.8420.04000.010.98117.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
BLANCGUHH0.633.25e-111.1235
MRGE IVHH0.923.21e-114.8159
DIX CHHH1.037.97e-239.254
LSD GUHH0.551.75e-248.3167
CIRO GUHH0.931.78e-254.2125
SENINCHHH0.852.27e-259.123
VANNICHHH0.661.46e-259.451
SATI GUHH0.554.92e-367.690
EMBD CHHH0.485.89e-374.659
MMK CHHH0.654.34e-377.375
SIMPLCHHH0.504.23e-388.563
FIESACHHH1.271.63e-2105.854
BHB GUHH1.016.23e-3117.8170


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.
(°)
COURMFRHHZ1.5927e-42.5344e-51.1961e-52.6389e-61.3614e-63.7544e-45.9463e-52.5046e-65.7667e-710.1205
COURMFRHHN1.6679e-42.7537e-51.9842e-55.8800e-63.0026e-63.5332e-47.7296e-54.5961e-67.4750e-710.1205
COURMFRHHE3.1504e-45.6275e-52.5455e-56.1893e-63.3848e-69.1862e-41.1970e-45.2036e-61.1647e-610.1205
BLANCGUHHZ2.6656e-53.3566e-61.4222e-65.2966e-72.3882e-74.0672e-56.1638e-63.5222e-75.6802e-811.1235
BLANCGUHHN2.3211e-53.7790e-61.6731e-61.1069e-65.5560e-74.6523e-55.9718e-67.9146e-71.0611e-711.1235
BLANCGUHHE4.2322e-55.5095e-62.4601e-69.6231e-74.0767e-76.7546e-51.2154e-56.6251e-71.2433e-711.1235
MRGE IVHHZ3.1921e-53.5073e-66.7143e-72.5749e-71.3886e-72.3323e-52.6364e-63.0417e-77.2539e-814.8159
MRGE IVHHN8.6842e-58.1995e-61.4420e-65.7411e-73.1991e-76.8355e-57.6343e-66.3879e-71.6527e-714.8159
MRGE IVHHE7.6702e-56.3445e-62.0711e-68.6358e-75.6987e-75.2018e-59.8054e-69.3493e-71.4768e-714.8159
DIX CHHHZ9.4670e-61.4317e-69.7767e-73.0511e-71.2812e-71.7959e-55.7522e-62.1716e-73.8622e-839.254
DIX CHHHN1.3043e-51.5864e-67.3538e-72.8046e-71.1177e-73.9773e-52.4331e-61.6418e-73.5643e-839.254
DIX CHHHE1.5920e-52.0033e-68.5078e-72.8014e-71.2207e-73.4632e-53.6281e-61.8414e-74.2584e-839.254
LSD GUHHZ1.7664e-62.0888e-78.4607e-82.9414e-81.6268e-82.6790e-63.8520e-72.5780e-84.0858e-948.3167
LSD GUHHN3.0094e-62.8856e-78.0832e-82.7612e-81.6694e-83.9266e-62.6636e-73.1895e-85.6516e-948.3167
LSD GUHHE3.0317e-63.1467e-71.3367e-73.9378e-82.0616e-84.5093e-65.3887e-73.3919e-87.0383e-948.3167
CIRO GUHHZ2.1577e-62.0636e-78.0800e-82.9679e-81.3384e-82.7486e-64.0847e-72.4926e-85.0766e-954.2125
CIRO GUHHN3.2942e-63.1991e-71.5766e-76.0787e-82.7340e-83.5345e-67.8975e-73.9971e-87.9182e-954.2125
CIRO GUHHE1.9896e-62.1389e-78.0227e-83.1348e-81.6523e-82.4741e-65.2910e-72.3478e-84.1931e-954.2125
SENINCHHHZ2.6635e-65.4841e-73.6057e-79.4468e-84.3824e-88.2758e-61.9744e-66.6558e-81.2004e-859.123
SENINCHHHN1.3368e-62.2714e-71.6543e-75.0735e-82.3509e-84.3230e-61.1659e-63.3139e-85.7103e-959.123
SENINCHHHE1.7110e-62.9630e-72.0764e-77.7886e-83.3502e-85.0940e-61.1004e-65.4802e-87.8917e-959.123
VANNICHHHZ5.5495e-78.8663e-87.6306e-84.6008e-81.6392e-81.4867e-63.9522e-71.9536e-82.4549e-959.451
VANNICHHHN7.1860e-71.1314e-79.9106e-87.0928e-82.4651e-81.6667e-64.4049e-73.0852e-83.7074e-959.451
VANNICHHHE7.5424e-71.1308e-71.0677e-78.3549e-82.8321e-81.9388e-64.8972e-73.7842e-84.0584e-959.451
SATI GUHHZ7.7863e-78.9217e-82.8581e-81.4056e-81.5337e-81.6159e-69.6342e-82.1237e-83.9604e-967.690
SATI GUHHN9.2810e-71.0180e-73.5887e-81.2335e-86.6889e-92.1435e-61.1363e-71.1159e-82.1193e-967.690
SATI GUHHE1.0480e-61.1189e-74.2035e-81.1523e-81.2776e-82.1645e-61.5064e-72.0721e-82.5011e-967.690
EMBD CHHHZ4.4160e-79.0161e-86.2240e-83.7665e-81.2393e-81.1868e-61.9809e-71.6766e-82.4148e-974.659
EMBD CHHHN4.0696e-76.5566e-85.0588e-82.4274e-89.9340e-91.1839e-61.8095e-71.3301e-81.6951e-974.659
EMBD CHHHE3.8291e-76.9499e-84.2688e-81.8443e-88.2665e-91.0389e-61.5334e-79.9237e-91.7035e-974.659
MMK CHHHZ4.8990e-76.6954e-83.3594e-81.0364e-87.2997e-91.2763e-61.3495e-71.1019e-81.4362e-977.375
MMK CHHHN5.2217e-77.2902e-84.0761e-81.4169e-89.2438e-91.1549e-61.7479e-71.4846e-81.7282e-977.375
MMK CHHHE4.6089e-76.0828e-82.5516e-89.0944e-95.6378e-91.0206e-61.2395e-78.3439e-91.3576e-977.375
SIMPLCHHHZ3.1455e-76.4411e-84.1671e-81.4109e-86.8260e-97.9431e-71.7962e-71.1572e-81.7796e-988.563
SIMPLCHHHN3.1092e-76.3026e-84.3185e-81.4353e-87.7405e-99.0805e-72.2282e-71.1625e-81.4797e-988.563
SIMPLCHHHE2.8387e-75.7878e-83.2458e-81.1666e-88.1129e-98.7618e-71.4391e-71.1963e-81.2251e-988.563
FIESACHHHZ4.6063e-71.0516e-71.1296e-76.7773e-83.4994e-82.2480e-69.3627e-73.7434e-83.6475e-9105.854
FIESACHHHN6.3086e-71.5233e-71.0944e-76.2093e-84.8284e-81.7724e-67.0455e-75.6886e-85.3931e-9105.854
FIESACHHHE4.8723e-71.3817e-71.1055e-75.4372e-82.9827e-81.4045e-69.7851e-74.5400e-84.2041e-9105.854
BHB GUHHZ2.1723e-73.2800e-82.3434e-81.4629e-81.7127e-85.4185e-77.8680e-83.8713e-81.3703e-9117.8170
BHB GUHHN2.3705e-74.2314e-83.1715e-81.4460e-81.1842e-87.8225e-71.5922e-72.3638e-81.0977e-9117.8170
BHB GUHHE2.1223e-74.6429e-82.3664e-82.4890e-84.9399e-84.7714e-79.5690e-81.2077e-74.7011e-9117.8170
*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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