MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.9
2025-05-05 16:18:56 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-05-06 06:43:25

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Earthquake info - Manual location
Event - ID :250505161830
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2025-05-05 16:18:56.561 (UTC)
Location : Latitude: 45.882 N, Longitude: 7.009 E
Area :Alpi Pennine
Depth (km) :5.91
Distances (km) : 10.2 --- Courmayeur
13.2 --- Pre -Saint-Didier
13.9 --- Morgex
14.7 --- Saint-Rhemy-En-Bosses
15.8 --- La Salle
16.9 --- Saint-Oyen
18.3 --- Etroubles
18.8 --- La Thuile
21.7 --- Avise
21.8 --- Allein
22.0 --- Saint-Nicolas
23.2 --- Arvier
23.5 --- Ollomont
24.0 --- Doues
24.8 --- Gignod
25.1 --- Villeneuve
25.2 --- Valpelline
25.3 --- Introd
25.6 --- Saint-Pierre
25.8 --- Roisan

Quality location estimate: Erh: 1.2 km, Erz: 0.9 km, Nf: 26, Gap: 149 °, 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.
COURMFR2025-05-05 16:18:59.4700.00900.461.092025-05-05 16:19:00.6500.02900.061.5810.7
BLANCGU2025-05-05 16:18:59.6900.00900.381.022025-05-05 16:19:01.0800.0280-0.061.5311.7
MRGEIV2025-05-05 16:19:00.3700.01200.441.162025-05-05 16:19:02.1690.0431-0.001.7115.1
RSLFR2025-05-05 16:19:03.7800.0180-0.011.692025-05-05 16:19:07.7240.1153-0.970.2737.2
DIXCH2025-05-05 16:19:04.6150.05520.240.872025-05-05 16:19:09.4800.1163-0.290.6838.5
LSDGU2025-05-05 16:19:05.9200.02610.451.032025-05-05 16:19:11.2100.1454-0.350.6048.6
CIROGU2025-05-05 16:19:06.8580.0200-0.031.532025-05-05 16:19:12.9900.1615-1.110.2354.0
SENINCH2025-05-05 16:19:07.9000.03510.151.202025-05-05 16:19:15.1520.2737-0.420.6258.5
SATIGU2025-05-05 16:19:08.7400.0200-0.011.482025-05-05 16:19:16.7600.2707-0.940.2967.1
EMBDCH2025-05-05 16:19:09.9130.0200-0.051.382025-05-05 16:19:18.8260.0400-0.430.5073.9
MMKCH2025-05-05 16:19:10.7150.02000.560.642025-05-05 16:19:19.6860.0400-0.041.1676.6
LAUCHCH2025-05-05 16:19:12.1200.04520.450.882025-05-05 16:19:22.4510.04000.261.1083.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
BLANCGUHH0.996.71e-111.7234
MRGE IVHH1.155.23e-115.1162
DIX CHHH1.261.40e-138.554
LSD GUHH1.035.22e-248.6168
CIRO GUHH0.721.09e-254.0125
SENINCHHH0.922.76e-258.523
SATI GUHH0.615.85e-367.190
MMK CHHH0.715.12e-376.675
LAUCHCHHH0.861.09e-283.844


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.
(°)
COURMFRHHZ2.7992e-42.9893e-51.1629e-53.1593e-61.8830e-64.5105e-45.2002e-53.2010e-66.7924e-710.7207
COURMFRHHN3.7209e-43.7499e-51.2283e-53.8140e-62.4043e-66.2206e-44.6665e-54.5048e-68.7676e-710.7207
COURMFRHHE2.6724e-43.8634e-51.4299e-54.4124e-62.8423e-67.9020e-46.4838e-54.6909e-69.3183e-710.7207
BLANCGUHHZ6.6815e-57.0788e-63.5125e-61.0762e-64.9757e-71.0833e-41.7503e-58.8596e-71.8307e-711.7234
BLANCGUHHN8.4875e-51.0188e-54.6912e-61.8202e-61.0172e-61.1316e-42.4306e-51.6470e-62.7687e-711.7234
BLANCGUHHE1.0238e-41.1842e-55.7265e-62.0595e-61.0386e-61.9503e-42.8980e-51.7336e-62.8124e-711.7234
MRGE IVHHZ5.4206e-54.5879e-66.4942e-71.9800e-71.0919e-72.5913e-53.0141e-62.9168e-78.4645e-815.1162
MRGE IVHHN1.1531e-41.1834e-52.4814e-68.3865e-74.7550e-71.1354e-41.1096e-51.0402e-62.5746e-715.1162
MRGE IVHHE1.0311e-41.2223e-53.1342e-61.0446e-65.8794e-78.9123e-51.5493e-51.0866e-62.1805e-715.1162
DIX CHHHZ6.8254e-61.3044e-67.7189e-72.2133e-71.1129e-71.5059e-52.7381e-61.6940e-73.1321e-838.554
DIX CHHHN7.6446e-61.4394e-69.3261e-74.7814e-72.0467e-72.3160e-56.1843e-62.8750e-74.0569e-838.554
DIX CHHHE1.2288e-52.1101e-67.8381e-72.6885e-71.3540e-73.7854e-53.0640e-62.2982e-75.0657e-838.554
LSD GUHHZ4.6486e-64.6635e-71.7599e-76.8527e-83.7850e-85.3919e-65.1633e-75.7907e-89.7351e-948.6168
LSD GUHHN7.2221e-65.6662e-71.7189e-74.3922e-82.6447e-88.7803e-66.2698e-74.7100e-81.1834e-848.6168
LSD GUHHE6.8996e-61.1037e-63.5203e-71.0541e-76.7403e-81.5166e-51.3353e-61.1713e-72.1456e-848.6168
CIRO GUHHZ1.3537e-61.7605e-75.7973e-82.6832e-81.4487e-81.9549e-63.6961e-72.2553e-83.5962e-954.0125
CIRO GUHHN2.3358e-62.1664e-78.7250e-84.1186e-81.7516e-83.7155e-64.9868e-72.7846e-85.1627e-954.0125
CIRO GUHHE1.5160e-61.7745e-75.7422e-82.1865e-81.0710e-82.9426e-63.1853e-71.7103e-83.0394e-954.0125
SENINCHHHZ1.2743e-62.6218e-71.9261e-76.4370e-83.3925e-83.4767e-69.3693e-75.0053e-87.1409e-958.523
SENINCHHHN1.0033e-61.8881e-71.3993e-77.1371e-83.9192e-83.6105e-67.8622e-74.8029e-84.8024e-958.523
SENINCHHHE1.9488e-63.6018e-72.5450e-78.5765e-84.2468e-85.1650e-61.2716e-66.4860e-89.0571e-958.523
SATI GUHHZ8.0453e-78.8414e-83.4458e-81.1141e-86.9892e-92.0538e-61.3247e-71.1066e-82.0398e-967.190
SATI GUHHN1.1341e-61.1622e-74.7895e-81.7226e-88.6858e-92.1933e-61.9859e-71.4444e-82.7766e-967.190
SATI GUHHE1.1509e-61.3190e-76.1734e-81.9293e-81.1357e-83.7875e-62.1885e-71.7170e-82.8157e-967.190
EMBD CHHHZ3.4385e-75.8105e-85.6503e-83.5626e-81.1665e-88.8056e-73.5517e-71.6424e-82.1408e-973.959
EMBD CHHHN3.6282e-74.7360e-83.3853e-81.9648e-87.7604e-98.6864e-71.5679e-71.0429e-81.3419e-973.959
EMBD CHHHE3.4486e-75.1597e-83.1968e-81.5945e-88.1517e-98.2447e-72.1512e-71.3574e-81.3978e-973.959
MMK CHHHZ4.8767e-78.5717e-84.8642e-81.8126e-89.3735e-91.0176e-62.9254e-71.3929e-81.9847e-976.675
MMK CHHHN4.4437e-79.0037e-85.9206e-81.8678e-89.7443e-91.2329e-62.4975e-71.4362e-81.8069e-976.675
MMK CHHHE5.8798e-75.6570e-83.8862e-81.4572e-86.8914e-98.2892e-72.0602e-78.3036e-91.4021e-976.675
LAUCHCHHHZ5.5808e-71.0423e-74.3527e-81.7956e-81.0826e-81.7825e-62.3370e-71.4087e-81.9648e-983.844
LAUCHCHHHN4.9794e-78.4869e-85.9853e-82.3326e-81.2845e-81.7995e-62.9152e-71.7920e-82.1931e-983.844
LAUCHCHHHE6.2131e-71.5331e-71.0718e-73.3118e-81.9558e-81.6972e-63.7248e-72.7392e-83.7068e-983.844
*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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