MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.1
2025-04-27 16:02:55 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-28 07:45:07

20 km
Lat : Lon
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Earthquake info - Manual location
Event - ID :250427160134
Magnitude (ML) :0.1 +/- 0.2
Origin Time :2025-04-27 16:02:55.024 (UTC)
Location : Latitude: 45.811 N, Longitude: 7.444 E
Area :Alpi Pennine
Depth (km) :6.01
Distances (km) : 6.6 --- Oyace
7.3 --- Bionaz
7.9 --- Nus
8.0 --- Quart
8.7 --- Verrayes
8.9 --- Saint-Marcel
9.3 --- Valpelline
9.4 --- Fenis
9.7 --- Brissogne
9.8 --- Saint-Christophe
9.8 --- Torgnon
10.5 --- Roisan
10.7 --- Doues
10.8 --- Chambave
10.8 --- Saint-Denis
11.3 --- Ollomont
11.5 --- Antey-Saint-Andre
11.6 --- Pollein
11.9 --- Gignod
12.9 --- Aosta

Quality location estimate: Erh: 0.9 km, Erz: 0.9 km, Nf: 16, Gap: 94 °, Rms: 0.28


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.
CIROGU2025-04-27 16:03:00.5240.0602-0.011.622025-04-27 16:03:03.5730.0400-0.790.5426.6
MRGEIV2025-04-27 16:03:00.9840.02000.021.722025-04-27 16:03:04.3300.0400-0.860.4331.0
DIXCH2025-04-27 16:03:01.1890.0200-0.021.712025-04-27 16:03:05.0010.0400-0.600.6731.2
SATIGU2025-04-27 16:03:01.9620.02000.041.552025-04-27 16:03:06.3790.0400-0.550.6634.8
LSDGU2025-04-27 16:03:03.4500.0200-0.061.392025-04-27 16:03:08.5370.0400-0.780.5746.7
MMKCH2025-04-27 16:03:04.2050.02000.360.032025-04-27 16:03:09.6150.0400-0.500.6349.0
EMBDCH2025-04-27 16:03:04.9130.02000.051.332025-04-27 16:03:11.6150.0400-0.190.8054.6


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
CIRO GUHH0.261.54e-226.6157
MRGE IVHH-0.039.23e-331.0261
DIX CHHH0.533.88e-231.2354
SATI GUHH-0.054.76e-334.878
LSD GUHH0.137.02e-346.7212
MMK CHHH0.143.51e-349.056
EMBD CHHH-0.291.98e-354.633


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.
(°)
CIRO GUHHZ2.9388e-63.4249e-78.4792e-82.9114e-81.5526e-84.8441e-63.5547e-72.6937e-85.6397e-926.6157
CIRO GUHHN4.9434e-65.6157e-79.7766e-83.3572e-81.9611e-85.5772e-64.6207e-74.1678e-89.9111e-926.6157
CIRO GUHHE5.4977e-64.4798e-78.1331e-82.6985e-81.4108e-84.4216e-63.0421e-72.6063e-86.6110e-926.6157
MRGE IVHHZ1.8361e-61.2952e-72.8354e-81.3190e-86.5426e-91.2037e-61.3628e-71.0980e-82.6834e-931.0261
MRGE IVHHN2.7119e-62.4054e-75.7790e-81.8416e-81.2285e-84.6985e-62.3277e-72.4539e-85.1503e-931.0261
MRGE IVHHE1.8898e-61.6213e-73.7238e-81.6557e-88.9512e-92.6475e-61.5856e-71.3663e-82.8028e-931.0261
DIX CHHHZ5.4203e-67.2227e-72.3409e-78.3344e-84.2628e-89.3924e-61.3680e-67.0800e-81.3629e-831.2354
DIX CHHHN8.5005e-67.2677e-72.4270e-76.3707e-84.0050e-81.1880e-59.5018e-77.6550e-81.5943e-831.2354
DIX CHHHE1.0692e-59.9926e-72.9813e-78.7900e-85.6020e-81.6955e-51.0181e-68.4586e-82.2343e-831.2354
SATI GUHHZ6.2576e-76.4134e-82.0731e-86.6462e-95.0802e-98.6613e-78.9031e-86.8337e-91.4060e-934.878
SATI GUHHN1.3870e-61.4544e-72.8104e-81.0754e-86.6935e-92.0016e-61.1869e-71.2044e-83.1919e-934.878
SATI GUHHE9.1767e-71.0167e-73.0651e-81.1408e-81.2571e-81.3339e-68.5010e-81.5875e-82.0898e-934.878
LSD GUHHZ1.7673e-61.5007e-75.2061e-81.4642e-86.7214e-92.7681e-62.1314e-71.2876e-83.0256e-946.7212
LSD GUHHN2.2615e-61.7794e-75.1197e-81.3970e-89.2427e-93.4088e-62.2754e-71.6712e-83.7415e-946.7212
LSD GUHHE2.2228e-61.8499e-74.1192e-81.0942e-85.6496e-91.7193e-62.1185e-71.0924e-83.3807e-946.7212
MMK CHHHZ3.3843e-74.7885e-81.7869e-88.5804e-98.9463e-96.7134e-77.5423e-81.1350e-81.1229e-949.056
MMK CHHHN4.1818e-74.1429e-82.2933e-81.0880e-89.4358e-96.3799e-79.6369e-81.4682e-81.1818e-949.056
MMK CHHHE4.6101e-74.4099e-81.4878e-87.8374e-95.8170e-94.4891e-75.9196e-88.6777e-99.9482e-1049.056
EMBD CHHHZ3.1401e-74.2717e-82.0412e-88.9787e-95.1408e-95.1124e-79.6718e-87.2624e-98.1849e-1054.633
EMBD CHHHN3.8278e-73.0796e-81.7073e-86.8311e-95.0242e-93.6272e-71.0376e-76.2626e-98.0659e-1054.633
EMBD CHHHE3.0997e-73.4929e-81.7036e-89.1163e-94.6908e-94.5690e-77.8159e-87.4200e-97.0304e-1054.633
*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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