MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.9
2025-04-28 01:52:18 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-28 08:07:04

20 km
Lat : Lon
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Earthquake info - Manual location
Event - ID :250428015152
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2025-04-28 01:52:18.333 (UTC)
Location : Latitude: 45.877 N, Longitude: 7.019 E
Area :Alpi Pennine
Depth (km) :5.98
Distances (km) : 9.9 --- Courmayeur
12.7 --- Pre -Saint-Didier
13.2 --- Morgex
13.8 --- Saint-Rhemy-En-Bosses
15.0 --- La Salle
16.0 --- Saint-Oyen
17.4 --- Etroubles
18.4 --- La Thuile
20.8 --- Avise
21.0 --- Allein
21.1 --- Saint-Nicolas
22.3 --- Arvier
22.7 --- Ollomont
23.2 --- Doues
23.9 --- Gignod
24.2 --- Villeneuve
24.4 --- Introd
24.4 --- Valpelline
24.6 --- Saint-Pierre
24.9 --- Roisan

Quality location estimate: Erh: 1.3 km, Erz: 1.2 km, Nf: 40, Gap: 141 °, Rms: 0.32


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.
COURMFR2025-04-28 01:52:20.8900.00600.131.192025-04-28 01:52:22.0600.0290-0.271.2710.7
BLANCGU2025-04-28 01:52:21.1100.0050-0.011.502025-04-28 01:52:22.5000.0280-0.460.9812.0
MRGEIV2025-04-28 01:52:21.8000.00800.240.722025-04-28 01:52:23.7000.0441-0.001.5014.5
RSLFR2025-04-28 01:52:25.2400.0180-0.361.262025-04-28 01:52:29.2800.1123-1.260.2737.5
DIXCH2025-04-28 01:52:26.1020.02000.011.502025-04-28 01:52:31.1000.1153-0.351.2238.3
LSDGU2025-04-28 01:52:27.2300.02510.121.292025-04-28 01:52:32.6700.1464-0.431.0847.9
CIROGU2025-04-28 01:52:28.3500.0281-0.151.332025-04-28 01:52:34.4700.1625-1.120.3653.1
VANNICH2025-04-28 01:52:29.1440.0200-0.001.452025-04-28 01:52:36.1270.0400-0.490.9958.5
SENINCH2025-04-28 01:52:29.2460.0200-0.301.302025-04-28 01:52:36.2600.0400-1.130.3558.8
SATIGU2025-04-28 01:52:30.4490.02000.061.392025-04-28 01:52:38.0500.2787-1.190.3466.4
LATOIV2025-04-28 01:52:31.4620.02000.171.122025-04-28 01:52:39.4980.0400-0.510.9473.0
EMBDCH2025-04-28 01:52:31.6230.0200-0.031.422025-04-28 01:52:40.1760.0400-0.730.6373.6
MMKCH2025-04-28 01:52:32.1450.03910.320.602025-04-28 01:52:40.7000.3658-0.630.8276.1
OGMOFR2025-04-28 01:52:32.0800.0401-0.211.352025-04-28 01:52:41.1900.2396-0.620.8379.0
LAUCHCH2025-04-28 01:52:33.5450.04520.141.162025-04-28 01:52:44.2920.04000.380.5883.8
SIMPLCH2025-04-28 01:52:34.0100.0452-0.071.402025-04-28 01:52:43.8400.5049-1.220.3987.5
FIESACH2025-04-28 01:52:37.0990.0200-0.021.362025-04-28 01:52:49.7530.0400-0.441.03104.8
RRLGU2025-04-28 01:52:36.9900.0542-0.321.242025-04-28 01:52:49.9760.0400-0.381.08108.0
BHBGU2025-04-28 01:52:38.9100.05920.610.172025-04-28 01:52:51.5470.0400-0.590.87117.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
BLANCGUHH1.221.11e+012.0241
MRGE IVHH1.277.58e-114.5165
LSD GUHH0.974.70e-247.9169
CIRO GUHH0.681.05e-253.1125
VANNICHHH0.631.41e-258.550
SENINCHHH1.013.35e-258.822
SATI GUHH0.656.48e-366.490
MMK CHHH0.775.90e-376.175
LAUCHCHHH0.851.07e-283.844
FIESACHHH1.121.17e-2104.853
RRL GUHH0.763.22e-3108.0190
BHB GUHH1.128.09e-3117.5171


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.
(°)
COURMFRHHZ5.0101e-44.8009e-51.5373e-54.0925e-62.2246e-69.1197e-46.3709e-54.2346e-61.0969e-610.7214
COURMFRHHN7.4830e-48.1689e-52.0487e-56.9844e-64.4669e-61.1586e-37.0751e-58.6997e-61.8638e-610.7214
COURMFRHHE4.0688e-45.8209e-52.0739e-56.4645e-64.0292e-61.2041e-39.1667e-56.6515e-61.3807e-610.7214
BLANCGUHHZ1.0801e-41.2214e-55.0245e-61.4778e-66.9122e-71.9088e-42.3899e-51.1772e-62.8017e-712.0241
BLANCGUHHN1.8393e-41.9832e-57.5160e-63.0961e-61.6765e-61.8342e-43.4700e-52.7571e-64.6762e-712.0241
BLANCGUHHE1.6269e-41.7630e-59.3468e-63.1410e-61.5724e-62.5381e-45.0391e-52.5088e-64.3035e-712.0241
MRGE IVHHZ7.6098e-55.5370e-61.4072e-64.4326e-72.7181e-74.9339e-56.8751e-65.2554e-71.0848e-714.5165
MRGE IVHHN1.5918e-41.4707e-54.1658e-61.0085e-66.5234e-71.9239e-41.7109e-51.0448e-62.8899e-714.5165
MRGE IVHHE1.3864e-41.5187e-55.2411e-61.6856e-68.7627e-72.2382e-42.2540e-51.5375e-63.1564e-714.5165
DIX CHHHZ9.7527e-61.7662e-61.0006e-63.4950e-71.7816e-72.5473e-54.5903e-62.6421e-73.5546e-838.353
DIX CHHHN9.9185e-62.2218e-61.3911e-66.5055e-72.5052e-73.7634e-58.1529e-63.5871e-75.5819e-838.353
DIX CHHHE1.7474e-51.9491e-61.0019e-62.9024e-71.5633e-73.9206e-53.9033e-62.5641e-74.6559e-838.353
LSD GUHHZ3.7029e-64.1825e-71.7911e-76.1477e-83.2815e-86.0409e-64.4693e-75.0907e-88.5123e-947.9169
LSD GUHHN4.7687e-65.0802e-71.5345e-74.2316e-82.5962e-88.4142e-66.9500e-74.7049e-81.0407e-847.9169
LSD GUHHE5.5848e-67.6398e-73.2457e-79.7592e-86.2680e-81.4595e-51.3725e-61.0792e-71.9229e-847.9169
CIRO GUHHZ1.3515e-61.4902e-75.6979e-82.2775e-89.9016e-92.1530e-63.3897e-71.4500e-82.7178e-953.1125
CIRO GUHHN1.4033e-61.8926e-78.3651e-83.1730e-81.4296e-82.2552e-64.0685e-72.1567e-83.2793e-953.1125
CIRO GUHHE1.3094e-61.6605e-75.8566e-81.6800e-87.9224e-92.2337e-63.3065e-71.1703e-83.4219e-953.1125
VANNICHHHZ7.0990e-77.4477e-87.1249e-83.1124e-81.3585e-89.0411e-74.0845e-71.9144e-82.1562e-958.550
VANNICHHHN5.8205e-71.3258e-71.1025e-77.6923e-82.2037e-81.2619e-65.7499e-73.1662e-84.5507e-958.550
VANNICHHHE4.9320e-78.7251e-89.0850e-86.6651e-82.3492e-81.1421e-64.2701e-73.2703e-83.3855e-958.550
SENINCHHHZ2.5666e-64.2653e-72.4187e-77.3935e-84.4333e-85.8675e-61.0558e-66.8194e-81.1714e-858.822
SENINCHHHN1.5078e-63.0244e-71.7217e-76.6058e-83.2522e-86.2656e-68.5375e-74.8168e-86.0737e-958.822
SENINCHHHE2.1329e-64.4407e-73.1130e-71.0735e-75.5385e-87.0482e-61.5695e-67.7212e-81.3359e-858.822
SATI GUHHZ7.2395e-77.8166e-83.2352e-88.8638e-95.8287e-91.7998e-69.5090e-89.5154e-91.6307e-966.490
SATI GUHHN1.1782e-61.2337e-74.6590e-81.1660e-86.8037e-93.6827e-61.4876e-71.3944e-82.6819e-966.490
SATI GUHHE1.2971e-61.4943e-75.3540e-81.5542e-81.3971e-83.7501e-61.6436e-72.0321e-83.1114e-966.490
EMBD CHHHZ3.8915e-76.1920e-85.5376e-83.9482e-81.4821e-88.9914e-72.4482e-71.6867e-82.4045e-973.659
EMBD CHHHN3.4833e-75.9973e-84.5568e-82.2178e-81.0119e-81.0775e-62.1970e-71.3026e-81.7795e-973.659
EMBD CHHHE3.9304e-75.2641e-84.2760e-82.0503e-88.1177e-91.0030e-62.2451e-71.0460e-81.3560e-973.659
MMK CHHHZ4.8140e-77.7497e-84.2851e-81.8975e-81.6397e-81.3954e-61.8407e-72.5941e-82.5097e-976.175
MMK CHHHN5.2286e-78.0697e-85.7837e-81.6884e-88.8952e-91.8621e-62.6932e-71.3233e-82.2056e-976.175
MMK CHHHE4.7338e-75.8850e-83.4662e-81.1721e-85.9708e-99.7725e-71.9725e-77.7064e-91.5505e-976.175
LAUCHCHHHZ8.5273e-71.0779e-74.5098e-81.6999e-87.7335e-92.4942e-61.8175e-71.1576e-82.2582e-983.844
LAUCHCHHHN7.5548e-79.7752e-85.9800e-81.9755e-81.0497e-82.3331e-62.6146e-71.5243e-82.3477e-983.844
LAUCHCHHHE7.6869e-71.4880e-71.1112e-72.7753e-81.5666e-82.4110e-64.4242e-72.7008e-84.0771e-983.844
SIMPLCHHHZ4.5352e-74.9911e-83.0594e-81.0762e-87.3949e-97.1130e-72.0165e-71.0990e-81.1667e-987.562
SIMPLCHHHN3.0683e-75.0258e-83.0379e-81.5026e-88.6271e-97.9090e-71.3156e-71.1045e-81.2915e-987.562
SIMPLCHHHE3.5762e-74.7419e-82.5851e-89.6452e-96.6489e-98.8567e-71.2404e-79.4919e-91.1641e-987.562
FIESACHHHZ1.5503e-61.8472e-77.0919e-84.5519e-83.2350e-82.0183e-64.2384e-74.7111e-83.8241e-9104.853
FIESACHHHN9.8425e-71.4826e-78.5497e-84.1145e-82.7209e-81.5937e-63.8157e-73.8530e-84.4831e-9104.853
FIESACHHHE9.4539e-71.4321e-79.5263e-83.7574e-82.6397e-82.3393e-64.9670e-73.9361e-83.3986e-9104.853
RRL GUHHZ3.2945e-74.8103e-81.9874e-88.1276e-96.0324e-97.9433e-78.2902e-88.2818e-98.5419e-10108.0190
RRL GUHHN2.0756e-74.0237e-83.1502e-81.0666e-87.0773e-95.7744e-71.7690e-71.0394e-81.1992e-9108.0190
RRL GUHHE1.4631e-73.4003e-82.7420e-81.4590e-86.5443e-94.2273e-71.8055e-79.5729e-98.5886e-10108.0190
BHB GUHHZ4.6615e-77.5357e-85.0915e-82.2623e-81.8413e-89.2914e-72.4059e-73.8851e-81.9863e-9117.5171
BHB GUHHN5.3076e-71.1876e-77.5750e-81.9295e-81.4539e-81.6467e-63.6357e-73.6953e-82.7271e-9117.5171
BHB GUHHE2.7997e-76.0154e-83.7416e-81.7574e-81.3949e-85.8041e-71.1459e-73.1396e-81.7893e-9117.5171
*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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