MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.1
2025-04-15 08:46:25 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-15 10:29:06

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Earthquake info - Manual location
Event - ID :250415084600
Magnitude (ML) :0.1 +/- 0.1
Origin Time :2025-04-15 08:46:25.659 (UTC)
Location : Latitude: 45.794 N, Longitude: 7.478 E
Area :Alpi Pennine
Depth (km) :3.05
Distances (km) : 5.4 --- Verrayes
5.9 --- Nus
6.6 --- Fenis
7.2 --- Torgnon
7.4 --- Saint-Marcel
7.5 --- Saint-Denis
7.5 --- Quart
7.5 --- Chambave
8.9 --- Antey-Saint-Andre
9.4 --- Brissogne
9.9 --- Oyace
10.0 --- Bionaz
10.7 --- Pontey
10.8 --- Saint-Christophe
11.0 --- La Magdeleine
11.6 --- Chatillon
12.2 --- Chamois
12.3 --- Pollein
12.4 --- Valpelline
12.8 --- Roisan

Quality location estimate: Erh: 1 km, Erz: 1.3 km, Nf: 10, Gap: 109 °, Rms: 0.19


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.
CIROGU2025-04-15 08:46:31.6400.02000.710.002025-04-15 08:46:34.4920.0400-0.011.9823.1
DIXCH2025-04-15 08:46:32.6210.02000.031.982025-04-15 08:46:36.4950.0400-0.830.1132.8
MRGEIV2025-04-15 08:46:32.3120.0200-0.061.842025-04-15 08:46:35.5240.0400-1.480.0732.8
LSDGU2025-04-15 08:46:34.5900.02000.041.882025-04-15 08:46:39.4040.0400-1.130.1846.1
MMKCH2025-04-15 08:46:34.4780.0200-0.250.432025-04-15 08:46:41.1210.04000.051.5247.6


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
CIRO GUHH0.181.65e-223.1162
MRGE IVHH0.019.17e-332.8265
LSD GUHH0.198.33e-346.1216
MMK CHHH0.123.55e-347.653


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 GUHHZ5.5580e-64.8724e-71.1485e-73.7533e-82.1808e-85.6216e-64.1607e-73.6648e-81.0460e-823.1162
CIRO GUHHN5.1405e-64.4777e-71.0826e-74.2672e-82.2481e-86.6535e-66.0456e-74.1238e-89.0367e-923.1162
CIRO GUHHE5.4129e-64.1370e-79.7078e-83.3367e-81.6410e-84.7691e-64.2226e-72.8644e-87.9007e-923.1162
DIX CHHHZ1.1218e-51.1678e-64.0029e-71.2371e-77.3504e-82.0456e-51.9303e-61.2638e-72.6900e-832.8350
DIX CHHHN1.4270e-51.5531e-63.6976e-71.0769e-75.6644e-81.3419e-51.4934e-61.0542e-73.0542e-832.8350
DIX CHHHE1.5059e-51.7827e-65.7871e-71.6900e-71.0443e-71.9266e-51.8261e-61.9579e-74.1519e-832.8350
MRGE IVHHZ2.2951e-62.1493e-73.3283e-81.7158e-89.4265e-91.4023e-61.6991e-71.8779e-83.6471e-932.8265
MRGE IVHHN2.8088e-63.1246e-76.1856e-83.5245e-81.6736e-82.8623e-64.0446e-72.4826e-85.3621e-932.8265
MRGE IVHHE2.5726e-62.1443e-75.2507e-82.9304e-81.2948e-82.0894e-63.3897e-72.1492e-84.4938e-932.8265
LSD GUHHZ1.7447e-61.6991e-76.3456e-81.6642e-89.7148e-92.7977e-62.3779e-71.7160e-83.6937e-946.1216
LSD GUHHN2.3431e-62.3879e-75.3693e-81.7685e-88.7469e-91.9372e-62.7517e-71.5123e-83.5126e-946.1216
LSD GUHHE3.1679e-62.5773e-76.5947e-81.8118e-88.5600e-92.1173e-62.9391e-71.8346e-84.6857e-946.1216
MMK CHHHZ5.8450e-76.8969e-82.7190e-81.2063e-85.9646e-91.3878e-61.1402e-78.2713e-91.6330e-947.653
MMK CHHHN5.8942e-76.3963e-83.4121e-81.1757e-87.6439e-91.7521e-61.6064e-71.1002e-81.5535e-947.653
MMK CHHHE6.1871e-76.0103e-82.3629e-89.4622e-94.9089e-98.8204e-71.0441e-77.1001e-91.2731e-947.653
*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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