MANUAL Location - Area: Alpi Pennine , magnitude (ML): -0.1
2025-04-11 12:56:20 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-14 07:21:35

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Earthquake info - Manual location
Event - ID :250411125410
Magnitude (ML) :-0.1 +/- 0.1
Origin Time :2025-04-11 12:56:20.381 (UTC)
Location : Latitude: 45.796 N, Longitude: 7.465 E
Area :Alpi Pennine
Depth (km) :4.41
Distances (km) : 6.1 --- Nus
6.4 --- Verrayes
7.1 --- Quart
7.2 --- Fenis
7.4 --- Saint-Marcel
8.2 --- Torgnon
8.4 --- Chambave
8.5 --- Saint-Denis
9.0 --- Brissogne
9.0 --- Oyace
9.4 --- Bionaz
9.9 --- Antey-Saint-Andre
10.0 --- Saint-Christophe
11.3 --- Valpelline
11.6 --- Pollein
11.7 --- Pontey
11.9 --- Roisan
11.9 --- La Magdeleine
12.6 --- Doues
12.6 --- Chatillon

Quality location estimate: Erh: 1.1 km, Erz: 2.2 km, Nf: 12, Gap: 105 °, Rms: 0.23


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.
CIROGU2025-04-11 12:56:26.1480.06020.480.142025-04-11 12:56:29.2480.0400-0.041.5024.0
REMYGU2025-04-11 12:56:25.7300.02000.011.852025-04-11 12:56:28.4070.0400-1.050.3025.3
DIXCH2025-04-11 12:56:27.0440.0200-0.021.742025-04-11 12:56:30.6690.0400-1.050.3032.7
LSDGU2025-04-11 12:56:29.0470.02000.031.622025-04-11 12:56:34.1070.0400-0.750.1145.9
MMKCH2025-04-11 12:56:29.4270.10040.071.312025-04-11 12:56:35.7420.04000.061.2548.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
CIRO GUHH-0.196.51e-324.0160
REMY GUHH-0.041.57e-225.3281
LSD GUHH-0.193.48e-345.9215
MMK CHHH-0.032.44e-348.454


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 GUHHZ2.2822e-62.3641e-74.1998e-82.2320e-81.5158e-82.0986e-61.6577e-72.7642e-83.7059e-924.0160
CIRO GUHHN2.6817e-62.5064e-74.4495e-81.9866e-81.6419e-81.9930e-62.3819e-72.2639e-83.5418e-924.0160
CIRO GUHHE2.1828e-61.6943e-74.8287e-81.6116e-88.5758e-92.1813e-62.2355e-71.6058e-83.2781e-924.0160
REMY GUHHZ3.0578e-62.5622e-77.4771e-82.5431e-81.3769e-83.0569e-63.1601e-71.8690e-83.6496e-925.3281
REMY GUHHN2.4728e-62.7806e-71.2135e-77.1483e-85.1733e-83.8359e-64.1200e-77.3996e-86.5574e-925.3281
REMY GUHHE2.0900e-62.7650e-71.0195e-74.1971e-82.0257e-84.4544e-64.1096e-72.7804e-85.4927e-925.3281
DIX CHHHZ7.5635e-66.9648e-73.0273e-79.0621e-84.9001e-88.9375e-61.3885e-68.8944e-81.6103e-832.7351
DIX CHHHN8.6019e-69.5954e-72.5262e-77.6749e-83.6297e-81.5628e-58.6529e-77.2257e-82.0692e-832.7351
DIX CHHHE1.3143e-51.6465e-66.0332e-71.5227e-78.8088e-83.1645e-52.4403e-61.5394e-73.2808e-832.7351
LSD GUHHZ6.8680e-77.4034e-82.6377e-89.3446e-95.3171e-91.0406e-61.0189e-77.6538e-91.5168e-945.9215
LSD GUHHN9.5607e-78.3528e-82.3596e-89.7949e-95.1288e-97.9649e-71.1266e-76.8249e-91.4437e-945.9215
LSD GUHHE1.0556e-61.0403e-73.0222e-81.2409e-85.9681e-91.0979e-69.9378e-88.4574e-92.0605e-945.9215
MMK CHHHZ2.3491e-72.9039e-81.7337e-89.4418e-95.6577e-95.5691e-79.0629e-86.6001e-96.8878e-1048.454
MMK CHHHN3.3053e-74.4347e-82.3759e-81.1419e-85.4971e-95.2900e-79.9014e-88.0116e-91.2453e-948.454
MMK CHHHE3.7182e-73.1632e-81.8716e-81.1995e-85.8463e-94.7728e-78.7649e-86.3450e-98.0956e-1048.454
*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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