MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.4
2025-05-31 06:16:07 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-06-02 10:44:36

RSNI Logo

Earthquake info - Manual location
Event - ID :250531061445
Magnitude (ML) :0.4 +/- 0.1
Origin Time :2025-05-31 06:16:07.094 (UTC)
Location : Latitude: 45.804 N, Longitude: 7.440 E
Area :Alpi Pennine
Depth (km) :5.52
Distances (km) : 7.0 --- Oyace
7.1 --- Quart
7.2 --- Nus
8.1 --- Bionaz
8.1 --- Saint-Marcel
8.5 --- Verrayes
8.8 --- Fenis
8.9 --- Brissogne
9.0 --- Saint-Christophe
9.2 --- Valpelline
10.0 --- Roisan
10.1 --- Torgnon
10.5 --- Chambave
10.5 --- Doues
10.6 --- Saint-Denis
10.8 --- Pollein
11.4 --- Gignod
11.4 --- Ollomont
11.8 --- Antey-Saint-Andre
12.2 --- Aosta

Quality location estimate: Erh: 0.8 km, Erz: 0.8 km, Nf: 24, Gap: 100 °, Rms: 0.34


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.
REMYGU2025-05-31 06:16:12.1400.01200.141.312025-05-31 06:16:14.9190.0742-0.560.8823.7
CIROGU2025-05-31 06:16:12.4950.0602-0.061.152025-05-31 06:16:15.7540.0912-0.580.8825.8
MRGEIV2025-05-31 06:16:13.0820.02000.051.492025-05-31 06:16:16.3590.0400-0.850.6430.5
DIXCH2025-05-31 06:16:13.4150.0160-0.051.242025-05-31 06:16:17.2400.0952-0.710.9031.9
LSDGU2025-05-31 06:16:15.5500.02810.031.482025-05-31 06:16:20.5000.1384-0.760.7845.7
MMKCH2025-05-31 06:16:16.2780.02000.191.262025-05-31 06:16:22.0300.1444-0.450.7249.6
EMBDCH2025-05-31 06:16:17.2400.02000.111.452025-05-31 06:16:23.5100.1665-0.710.7755.4
LATOIV2025-05-31 06:16:17.5160.02000.300.872025-05-31 06:16:23.9970.04000.031.2456.2
SENINCH2025-05-31 06:16:18.9620.02000.290.912025-05-31 06:16:26.1070.0400-0.760.7763.6
SIMPLCH2025-05-31 06:16:19.2540.02000.290.902025-05-31 06:16:26.6800.1965-0.690.7366.3
BHBGU2025-05-31 06:16:25.8850.02000.450.512025-05-31 06:16:38.0900.3958-0.110.83108.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
REMY GUHH0.334.13e-223.7280
CIRO GUHH0.492.75e-225.8156
MRGE IVHH0.271.91e-230.5263
LSD GUHH0.421.44e-245.7212
MMK CHHH0.355.57e-349.656
EMBD CHHH0.348.04e-355.433
SENINCHHH0.508.86e-363.6350
SIMPLCHHH0.264.64e-366.343
BHB GUHH0.734.00e-3108.7187


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.
(°)
REMY GUHHZ5.5231e-65.3798e-71.9789e-75.2370e-83.1805e-87.5146e-61.0239e-65.5222e-88.7912e-923.7280
REMY GUHHN8.7453e-69.9588e-73.0500e-79.2562e-84.8934e-81.1271e-51.2418e-67.9116e-81.9598e-823.7280
REMY GUHHE4.8869e-66.8829e-72.6214e-71.1819e-75.3672e-81.0273e-59.5892e-77.5199e-81.4443e-823.7280
CIRO GUHHZ8.5833e-67.6193e-71.6315e-74.1951e-82.2115e-81.0078e-54.5717e-74.7461e-81.2985e-825.8156
CIRO GUHHN9.3105e-66.6996e-71.5559e-75.3749e-82.7176e-88.8907e-67.2628e-74.7507e-81.1990e-825.8156
CIRO GUHHE9.1208e-67.6906e-72.0792e-76.3099e-83.5196e-88.1769e-61.0107e-66.1450e-81.4801e-825.8156
MRGE IVHHZ3.2757e-62.6499e-77.1902e-83.5734e-81.3565e-82.6144e-63.6063e-72.5427e-84.5436e-930.5263
MRGE IVHHN5.1411e-64.8510e-71.1525e-74.7765e-82.7844e-88.2001e-64.6626e-74.8066e-89.7692e-930.5263
MRGE IVHHE3.9670e-63.2329e-79.3308e-84.6633e-82.2745e-84.9053e-64.0105e-73.6045e-87.7366e-930.5263
DIX CHHHZ2.7333e-52.7452e-61.0892e-63.4781e-72.0257e-73.3406e-55.8403e-63.8433e-77.4901e-831.9355
DIX CHHHN3.7108e-53.4334e-61.1002e-63.0517e-71.7331e-76.9401e-54.3291e-63.2976e-77.1511e-831.9355
DIX CHHHE4.6612e-56.4491e-62.0955e-65.3854e-73.2383e-79.8025e-58.9140e-65.1459e-71.2279e-731.9355
LSD GUHHZ2.8388e-62.8920e-71.0536e-72.5274e-81.2817e-84.7400e-64.8711e-72.4145e-86.2379e-945.7212
LSD GUHHN2.9742e-62.9764e-71.0139e-72.5152e-81.2205e-83.8355e-65.0742e-72.5003e-85.9564e-945.7212
LSD GUHHE3.9067e-63.2695e-71.1514e-72.7244e-81.5000e-84.7297e-64.6269e-73.0412e-87.5544e-945.7212
MMK CHHHZ9.0565e-71.1006e-74.4334e-81.8706e-89.4299e-91.5715e-62.0782e-71.2836e-82.2848e-949.656
MMK CHHHN1.1218e-61.2458e-75.5203e-81.5546e-88.8393e-92.0722e-63.2553e-71.6107e-82.9212e-949.656
MMK CHHHE1.1671e-61.0767e-74.1288e-82.3158e-81.4667e-81.7263e-61.6358e-72.0985e-82.7594e-949.656
EMBD CHHHZ8.9050e-71.2849e-71.0026e-75.9211e-82.4577e-81.8897e-64.8018e-73.0289e-84.5819e-955.433
EMBD CHHHN1.1027e-61.3665e-75.9739e-82.7224e-81.3135e-81.7710e-62.5411e-72.2983e-83.7568e-955.433
EMBD CHHHE1.2244e-61.0728e-74.8202e-82.2190e-81.0469e-81.1617e-63.4059e-71.5738e-82.1004e-955.433
SENINCHHHZ8.8364e-71.6251e-71.1713e-75.1259e-81.9536e-84.0991e-64.1993e-72.9737e-84.8751e-963.6350
SENINCHHHN6.3620e-71.1235e-78.9488e-84.9937e-83.0187e-81.4923e-64.7828e-74.1297e-86.5183e-963.6350
SENINCHHHE8.2959e-71.2922e-78.9054e-83.0564e-81.4182e-82.5733e-64.1894e-72.0502e-83.4884e-963.6350
SIMPLCHHHZ7.2021e-78.9392e-84.2055e-81.2029e-86.2375e-91.9171e-61.4502e-78.5959e-91.9348e-966.343
SIMPLCHHHN8.3225e-79.4370e-84.0521e-81.4840e-87.2576e-92.4914e-61.2211e-78.9418e-92.1637e-966.343
SIMPLCHHHE8.7615e-71.0869e-74.3409e-81.5103e-86.6502e-92.7110e-61.5859e-79.9809e-92.3281e-966.343
BHB GUHHZ6.7214e-71.0186e-73.1981e-81.1837e-85.1836e-91.1391e-61.1989e-77.2796e-91.5639e-9108.7187
BHB GUHHN5.4214e-77.5514e-83.5671e-81.5171e-86.5188e-91.1758e-61.5675e-71.0730e-81.5475e-9108.7187
BHB GUHHE3.4422e-75.3319e-82.8569e-81.6127e-86.2549e-97.4678e-71.3117e-77.8174e-91.1677e-9108.7187
*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)

rsni