MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.4
2025-05-09 08:59:51 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-05-09 13:40:44

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Earthquake info - Manual location
Event - ID :250509085845
Magnitude (ML) :0.4 +/- 0.1
Origin Time :2025-05-09 08:59:51.577 (UTC)
Location : Latitude: 45.805 N, Longitude: 7.439 E
Area :Alpi Pennine
Depth (km) :6.01
Distances (km) : 6.9 --- Oyace
7.2 --- Quart
7.3 --- Nus
7.9 --- Bionaz
8.2 --- Saint-Marcel
8.6 --- Verrayes
8.9 --- Fenis
8.9 --- Brissogne
9.0 --- Saint-Christophe
9.1 --- Valpelline
10.0 --- Roisan
10.2 --- Torgnon
10.4 --- Doues
10.6 --- Chambave
10.7 --- Saint-Denis
10.8 --- Pollein
11.3 --- Ollomont
11.3 --- Gignod
11.9 --- Antey-Saint-Andre
12.2 --- Aosta

Quality location estimate: Erh: 0.9 km, Erz: 0.6 km, Nf: 22, Gap: 99 °, Rms: 0.35


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.
REMYGU2025-05-09 08:59:56.5900.10050.161.072025-05-09 08:59:59.3800.0691-0.520.9623.7
CIROGU2025-05-09 08:59:57.0500.10550.041.372025-05-09 09:00:00.1300.0762-0.661.0326.1
MRGEIV2025-05-09 08:59:57.4220.0200-0.011.472025-05-09 09:00:00.9100.0912-0.690.9630.5
DIXCH2025-05-09 08:59:57.7140.0200-0.150.732025-05-09 09:00:01.6450.0942-0.690.9531.9
LSDGU2025-05-09 09:00:00.0100.11650.081.262025-05-09 09:00:05.0910.2537-0.560.8645.9
MMKCH2025-05-09 09:00:00.6780.02000.171.012025-05-09 09:00:06.3050.1484-0.560.9049.7
EMBDCH2025-05-09 09:00:01.5520.02000.011.422025-05-09 09:00:07.7800.1665-0.800.6655.4
SENINCH2025-05-09 09:00:03.2380.02000.181.002025-05-09 09:00:10.6920.0400-0.530.9163.5
RSLFR2025-05-09 09:00:04.4540.02001.240.002025-05-09 09:00:11.0240.0400-0.280.8764.7
SIMPLCH2025-05-09 09:00:03.4350.02000.071.342025-05-09 09:00:11.0280.3908-0.710.6866.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
REMY GUHH0.323.99e-223.7280
CIRO GUHH0.462.52e-226.1156
MRGE IVHH0.302.05e-230.5263
LSD GUHH0.381.30e-245.9212
MMK CHHH0.375.84e-349.756
EMBD CHHH0.287.14e-355.433
SENINCHHH0.571.02e-263.5350
SIMPLCHHH0.284.82e-366.443


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 GUHHZ4.8903e-64.7556e-72.1914e-75.8534e-83.7684e-87.2189e-61.2013e-66.7560e-81.0403e-823.7280
REMY GUHHN7.3686e-61.0184e-63.3128e-79.2421e-84.7790e-81.5485e-51.3257e-67.7705e-81.8808e-823.7280
REMY GUHHE5.5704e-68.1187e-72.6376e-71.1686e-75.0353e-81.1204e-51.0867e-67.4845e-81.6364e-823.7280
CIRO GUHHZ6.7515e-65.8556e-71.5678e-74.0388e-82.2214e-88.3215e-65.3405e-74.3575e-81.1192e-826.1156
CIRO GUHHN8.2202e-67.2079e-71.7156e-75.6600e-82.7235e-89.5495e-61.0034e-65.0283e-81.1907e-826.1156
CIRO GUHHE7.6926e-67.4352e-72.0666e-76.8723e-84.0944e-87.7506e-69.1438e-77.0494e-81.2735e-826.1156
MRGE IVHHZ3.0185e-62.2574e-76.5142e-82.7289e-81.2363e-82.2320e-63.1365e-71.7835e-84.1429e-930.5263
MRGE IVHHN4.7365e-65.5737e-71.3193e-75.2311e-82.9729e-81.1335e-55.4821e-75.3607e-81.1519e-830.5263
MRGE IVHHE4.8848e-64.6701e-78.8778e-83.6699e-81.7964e-85.7364e-63.1074e-73.2136e-87.1851e-930.5263
DIX CHHHZ2.2089e-52.4635e-61.0857e-63.6581e-72.0532e-74.6974e-56.1678e-63.1514e-75.0171e-831.9355
DIX CHHHN2.9787e-53.2830e-69.3798e-72.6920e-71.5485e-75.5091e-53.9082e-62.5177e-76.9536e-831.9355
DIX CHHHE3.2612e-55.3733e-61.6883e-64.3971e-72.6750e-78.3430e-56.1197e-64.2183e-71.0927e-731.9355
LSD GUHHZ2.6443e-62.6803e-79.5641e-82.4674e-81.3809e-82.8957e-63.6013e-72.7434e-85.5317e-945.9212
LSD GUHHN4.1001e-63.9495e-71.0402e-72.7651e-81.3357e-84.4524e-64.8877e-72.5855e-87.1128e-945.9212
LSD GUHHE4.3745e-63.9480e-71.0732e-72.5217e-81.3745e-84.4521e-65.2061e-73.0510e-87.6456e-945.9212
MMK CHHHZ1.1654e-61.0611e-74.9869e-81.9815e-88.8188e-92.1230e-62.4427e-71.5155e-82.6558e-949.756
MMK CHHHN1.0929e-61.1572e-75.9635e-81.6219e-81.0127e-82.1302e-62.6566e-71.3531e-82.7794e-949.756
MMK CHHHE1.1208e-61.1564e-73.8198e-81.8790e-89.9829e-91.2924e-61.7250e-71.5673e-82.7026e-949.756
EMBD CHHHZ8.8733e-71.4050e-77.6429e-84.0598e-81.6923e-82.4245e-63.9601e-72.3650e-83.4826e-955.433
EMBD CHHHN1.0718e-61.0923e-75.9192e-82.3973e-81.2751e-82.8054e-62.6909e-71.9849e-82.9997e-955.433
EMBD CHHHE9.2146e-79.9879e-84.8969e-82.6959e-81.2532e-81.2338e-63.3299e-71.7284e-82.1309e-955.433
SENINCHHHZ8.4915e-71.9065e-71.4191e-76.6304e-83.2873e-82.7292e-66.4676e-73.7608e-85.5106e-963.5350
SENINCHHHN5.6560e-79.4358e-87.9830e-84.4928e-82.1784e-81.2977e-63.6890e-73.0847e-82.9145e-963.5350
SENINCHHHE5.5846e-71.1731e-79.2763e-84.5633e-82.0559e-82.2058e-66.1259e-72.5276e-83.0288e-963.5350
SIMPLCHHHZ7.2164e-78.5097e-84.0089e-81.2809e-86.8614e-91.6291e-61.3669e-77.9967e-92.0486e-966.443
SIMPLCHHHN7.9076e-77.9319e-83.3874e-81.2802e-87.4429e-91.8117e-61.3006e-78.8414e-91.9837e-966.443
SIMPLCHHHE9.0928e-71.0696e-74.6086e-81.4386e-87.3438e-92.1531e-61.5737e-71.0705e-82.2305e-966.443
*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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