MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.9
2025-03-31 01:58:33 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-03-31 07:31:33

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Earthquake info - Manual location
Event - ID :250331015701
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2025-03-31 01:58:33.642 (UTC)
Location : Latitude: 45.877 N, Longitude: 6.992 E
Area :Alpi Pennine
Depth (km) :8.80
Distances (km) : 9.4 --- Courmayeur
12.5 --- Pre -Saint-Didier
13.6 --- Morgex
15.6 --- Saint-Rhemy-En-Bosses
15.7 --- La Salle
17.9 --- Saint-Oyen
17.9 --- La Thuile
19.3 --- Etroubles
21.8 --- Avise
22.3 --- Saint-Nicolas
22.9 --- Allein
23.4 --- Arvier
24.7 --- Ollomont
25.1 --- Doues
25.5 --- Villeneuve
25.5 --- Introd
25.7 --- Gignod
26.0 --- Saint-Pierre
26.4 --- Valpelline
26.8 --- Roisan

Quality location estimate: Erh: 0.9 km, Erz: 0.6 km, Nf: 40, Gap: 150 °, Rms: 0.41


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.
COURMFR2025-03-31 01:58:36.2900.00500.011.822025-03-31 01:58:37.2300.0310-0.791.1012.3
BLANCGU2025-03-31 01:58:36.6200.00500.011.822025-03-31 01:58:37.9200.1002-0.701.1013.5
MRGEIV2025-03-31 01:58:37.1400.0070-0.071.522025-03-31 01:58:38.8860.0451-0.711.1416.7
REMYGU2025-03-31 01:58:37.5900.00800.081.352025-03-31 01:58:39.7100.0471-0.430.6517.5
RSLFR2025-03-31 01:58:40.6900.01800.001.712025-03-31 01:58:44.6200.1073-0.850.9236.4
DIXCH2025-03-31 01:58:41.7370.0200-0.021.652025-03-31 01:58:46.5910.1233-0.770.9740.6
LSDGU2025-03-31 01:58:42.5700.02410.011.602025-03-31 01:58:47.7190.1002-0.940.7448.9
CIROGU2025-03-31 01:58:43.5070.0200-0.651.042025-03-31 01:58:49.6000.2106-1.870.0355.3
SENINCH2025-03-31 01:58:45.0020.0200-0.061.412025-03-31 01:58:52.4120.0400-0.640.9760.0
VANNICH2025-03-31 01:58:45.5100.02000.710.052025-03-31 01:58:51.7250.0400-0.770.9660.4
SATIGU2025-03-31 01:58:45.7180.0200-0.370.712025-03-31 01:58:53.9100.0400-1.310.2168.8
LATOIV2025-03-31 01:58:46.8750.02000.061.302025-03-31 01:58:54.7330.0400-0.940.7274.2
EMBDCH2025-03-31 01:58:47.2370.0200-0.081.302025-03-31 01:58:55.8700.0400-0.940.7275.6
MMKCH2025-03-31 01:58:47.4680.0200-0.041.352025-03-31 01:58:56.8100.4879-0.470.8578.4
OGMOFR2025-03-31 01:58:46.7600.0824-0.771.012025-03-31 01:58:56.9300.2506-0.060.9678.6
RSPGU2025-03-31 01:58:48.3460.0200-0.041.322025-03-31 01:58:57.7800.4229-0.680.8184.3
LAUCHCH2025-03-31 01:58:49.2900.04620.280.552025-03-31 01:58:59.3900.4008-0.340.9185.5
FIESACH2025-03-31 01:58:53.0460.02000.280.622025-03-31 01:59:05.6340.0400-0.440.97106.7
RRLGU2025-03-31 01:58:52.2600.0532-0.330.902025-03-31 01:59:04.9650.0400-0.640.90107.9
BHBGU2025-03-31 01:58:54.0960.02000.370.422025-03-31 01:59:07.1350.0400-0.500.95118.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
BLANCGUHH0.944.72e-113.5232
REMY GUHH0.761.93e-117.5109
DIX CHHH1.361.61e-140.654
LSD GUHH0.924.01e-248.9167
CIRO GUHH1.203.14e-255.3124
SENINCHHH0.641.37e-260.024
VANNICHHH0.781.85e-260.451
SATI GUHH0.655.99e-368.890
EMBD CHHH0.607.58e-375.659
MMK CHHH0.775.59e-378.475
RSP GUHH0.636.80e-384.3165
LAUCHCHHH1.011.48e-285.545
FIESACHHH1.151.21e-2106.754
RRL GUHH0.803.56e-3107.9189
BHB GUHH1.056.76e-3118.0170


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.
(°)
COURMFRHHZ2.1626e-42.8888e-51.3515e-53.1351e-61.7644e-65.4464e-44.7371e-53.0920e-66.1352e-712.3200
COURMFRHHN2.7690e-43.1942e-51.7383e-53.9298e-62.4419e-65.3860e-47.5598e-53.5190e-66.1458e-712.3200
COURMFRHHE2.8996e-44.4923e-52.1846e-55.1333e-63.1449e-67.2098e-48.1127e-55.4764e-61.0103e-612.3200
BLANCGUHHZ4.7916e-56.0122e-61.7570e-64.6972e-72.3705e-78.9948e-56.7198e-64.5534e-71.0945e-713.5232
BLANCGUHHN1.0305e-41.1665e-52.7369e-61.2090e-65.5249e-79.5969e-59.4831e-69.6489e-72.2455e-713.5232
BLANCGUHHE7.7866e-59.0140e-63.1180e-61.4460e-66.7433e-71.4559e-41.3335e-59.8106e-71.9965e-713.5232
MRGE IVHHZ7.5440e-58.0558e-61.2486e-64.3163e-72.3567e-76.2543e-55.0861e-65.0516e-71.6167e-716.7156
MRGE IVHHN1.6546e-41.9052e-54.4911e-61.2958e-67.1930e-72.1033e-41.8396e-51.5704e-63.7989e-716.7156
MRGE IVHHE1.7082e-41.8693e-55.6834e-61.8589e-61.1115e-61.5166e-42.7402e-52.1107e-64.0323e-716.7156
REMY GUHHZ1.2382e-52.0910e-68.8615e-73.5999e-72.5972e-72.4291e-54.8121e-64.0800e-74.7846e-817.5109
REMY GUHHN1.5083e-52.0717e-61.1459e-63.6189e-71.5919e-72.9950e-56.0642e-62.5568e-74.9148e-817.5109
REMY GUHHE2.1896e-52.8734e-61.4227e-66.2565e-73.3909e-73.0354e-55.7085e-65.3222e-78.9262e-817.5109
DIX CHHHZ2.0600e-52.8190e-61.3476e-64.7228e-72.1929e-76.1797e-56.8732e-63.6182e-77.3364e-840.654
DIX CHHHN1.1489e-51.8446e-61.4687e-66.2263e-72.6309e-72.5469e-58.0588e-63.8325e-75.6750e-840.654
DIX CHHHE1.4067e-52.6479e-61.3564e-64.4149e-72.2681e-76.0821e-55.7703e-63.2708e-76.1523e-840.654
LSD GUHHZ4.3290e-64.6296e-71.8893e-76.2854e-83.2284e-85.3210e-66.5731e-74.8295e-81.0134e-848.9167
LSD GUHHN7.0893e-65.7749e-71.4766e-74.7562e-83.5357e-86.9008e-66.2335e-75.8636e-81.0618e-848.9167
LSD GUHHE5.9030e-66.4795e-73.2535e-78.8783e-85.1953e-89.5576e-61.4464e-67.8345e-81.3479e-848.9167
CIRO GUHHZ2.2187e-62.3515e-71.3358e-75.6549e-82.1919e-83.0227e-67.5715e-73.0297e-85.0246e-955.3124
CIRO GUHHN3.1775e-63.7257e-72.1682e-79.0278e-84.2722e-83.9195e-61.1246e-67.0384e-81.1317e-855.3124
CIRO GUHHE1.9899e-62.7178e-71.2688e-74.6286e-82.6578e-82.8998e-67.3466e-74.5511e-87.5691e-955.3124
SENINCHHHZ1.3535e-62.8425e-71.7620e-75.5715e-82.8057e-85.0482e-66.0013e-74.0442e-86.4572e-960.024
SENINCHHHN9.3396e-71.6833e-71.3613e-75.7778e-82.5916e-82.9454e-67.5085e-73.9584e-84.3331e-960.024
SENINCHHHE9.8920e-71.8843e-71.4757e-74.6733e-82.3786e-83.7282e-65.2756e-73.5496e-84.5882e-960.024
VANNICHHHZ4.9899e-71.0192e-79.1672e-83.9597e-81.9253e-81.3787e-64.7879e-72.1078e-82.8784e-960.451
VANNICHHHN6.0259e-71.5590e-71.5015e-78.4198e-83.3367e-81.9700e-67.2185e-74.0177e-84.6861e-960.451
VANNICHHHE4.8249e-71.5915e-71.0727e-77.4330e-82.4852e-81.3322e-64.4486e-73.1631e-84.1164e-960.451
SATI GUHHZ5.7046e-76.4214e-83.4341e-81.2563e-87.5801e-91.3955e-61.7137e-71.0627e-81.6073e-968.890
SATI GUHHN9.7922e-71.1005e-74.5529e-81.6676e-89.0560e-92.1486e-61.9832e-71.4581e-82.3149e-968.890
SATI GUHHE1.0547e-61.1061e-75.3269e-81.7536e-81.0925e-82.2118e-61.7996e-71.9182e-82.4233e-968.890
EMBD CHHHZ3.7128e-79.3173e-88.8499e-86.6152e-82.5442e-89.6969e-73.7417e-72.8196e-84.9506e-975.659
EMBD CHHHN3.9661e-77.8909e-87.1984e-83.4317e-81.2334e-89.7153e-73.5442e-71.7081e-82.0456e-975.659
EMBD CHHHE3.0966e-77.8903e-86.7228e-83.7671e-81.2742e-88.1727e-73.2493e-71.5242e-81.9358e-975.659
MMK CHHHZ4.3849e-78.1717e-86.0216e-82.0713e-81.2298e-81.6625e-62.9578e-71.7234e-81.9112e-978.475
MMK CHHHN5.3581e-79.9205e-85.2587e-82.1052e-89.4521e-91.8536e-62.1298e-71.2171e-82.1236e-978.475
MMK CHHHE4.8738e-77.0731e-83.6663e-81.3508e-87.1756e-97.4576e-71.5604e-71.0232e-81.5569e-978.475
RSP GUHHZ2.9658e-74.7062e-82.7832e-88.5715e-94.2096e-98.4795e-79.1697e-86.7166e-91.0751e-984.3165
RSP GUHHN4.0666e-77.6682e-84.3923e-81.1085e-86.1847e-99.4918e-71.5725e-78.9819e-91.5837e-984.3165
RSP GUHHE4.4994e-79.1921e-86.4162e-81.5180e-88.2320e-91.4905e-62.8507e-71.2270e-82.2186e-984.3165
LAUCHCHHHZ4.4474e-77.2517e-85.6933e-83.4131e-82.8057e-82.0744e-64.6271e-74.4070e-84.4055e-985.545
LAUCHCHHHN4.4790e-71.0306e-78.6487e-83.7374e-81.6137e-81.5328e-67.2005e-72.2938e-82.3285e-985.545
LAUCHCHHHE7.2153e-71.7502e-71.4514e-75.3541e-82.0021e-81.9728e-69.9108e-72.7963e-84.7882e-985.545
FIESACHHHZ5.3954e-79.9882e-81.0421e-76.5465e-83.1717e-81.3588e-64.4732e-75.0654e-83.7364e-9106.754
FIESACHHHN4.2022e-71.1607e-71.0677e-76.1533e-83.5174e-89.6774e-76.7937e-74.7464e-83.3646e-9106.754
FIESACHHHE3.7265e-71.0541e-71.0408e-76.5141e-83.5693e-81.2431e-66.8264e-74.0288e-84.0543e-9106.754
RRL GUHHZ3.3645e-74.2667e-81.6518e-81.1200e-87.5163e-94.5727e-75.9953e-81.1183e-81.1640e-9107.9189
RRL GUHHN2.1011e-73.6292e-82.8473e-81.5209e-81.1122e-85.7966e-71.6221e-71.3761e-81.2376e-9107.9189
RRL GUHHE1.6599e-73.1377e-82.6780e-81.7056e-81.1271e-83.4823e-71.4880e-71.5261e-81.3046e-9107.9189
BHB GUHHZ3.9901e-77.3947e-84.6511e-81.9992e-81.9613e-89.9571e-71.4267e-74.2046e-82.3001e-9118.0170
BHB GUHHN4.3165e-71.0349e-76.8653e-82.1351e-81.3200e-81.2398e-62.9610e-72.4923e-82.6192e-9118.0170
BHB GUHHE3.0089e-77.4761e-84.5980e-81.9777e-81.0799e-88.5932e-71.6315e-71.8717e-82.0329e-9118.0170
*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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