MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.4
2025-02-20 01:42:04 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-02-20 10:03:27

RSNI Logo

Earthquake info - Manual location
Event - ID :250220014140
Magnitude (ML) :0.4 +/- 0.2
Origin Time :2025-02-20 01:42:04.046 (UTC)
Location : Latitude: 45.794 N, Longitude: 7.471 E
Area :Alpi Pennine
Depth (km) :4.41
Distances (km) : 5.8 --- Nus
5.9 --- Verrayes
6.8 --- Fenis
7.2 --- Quart
7.2 --- Saint-Marcel
7.8 --- Torgnon
8.0 --- Chambave
8.0 --- Saint-Denis
9.0 --- Brissogne
9.4 --- Oyace
9.5 --- Antey-Saint-Andre
9.7 --- Bionaz
10.2 --- Saint-Christophe
11.2 --- Pontey
11.6 --- La Magdeleine
11.8 --- Pollein
11.8 --- Valpelline
12.1 --- Chatillon
12.2 --- Roisan
12.7 --- Chamois

Quality location estimate: Erh: 0.8 km, Erz: 1.1 km, Nf: 32, Gap: 67 °, Rms: 0.31


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.
CIROGU2025-02-20 01:42:09.8190.02000.550.742025-02-20 01:42:12.8140.0400-0.021.9723.7
REMYGU2025-02-20 01:42:09.4020.0602-0.071.902025-02-20 01:42:12.1150.0400-1.150.2325.7
MRGEIV2025-02-20 01:42:10.4850.02000.022.102025-02-20 01:42:13.4660.0400-1.490.1032.4
SATIGU2025-02-20 01:42:11.2210.02000.260.712025-02-20 01:42:15.8290.0400-0.061.7633.0
DIXCH2025-02-20 01:42:10.7920.02000.012.092025-02-20 01:42:14.5650.0400-0.900.2033.0
OROIV2025-02-20 01:42:12.5230.0200-0.220.942025-02-20 01:42:18.7730.04000.041.6844.1
LSDGU2025-02-20 01:42:12.7030.02000.022.002025-02-20 01:42:17.4860.0400-1.040.2745.9
VANNICH2025-02-20 01:42:13.3780.02000.540.762025-02-20 01:42:18.9070.0400-0.101.5547.6
MMKCH2025-02-20 01:42:13.7540.02000.760.432025-02-20 01:42:19.2840.0400-0.011.6848.2
EMBDCH2025-02-20 01:42:11.9190.0200-2.280.002025-02-20 01:42:20.8320.0400-0.490.3354.9
LATOIV2025-02-20 01:42:14.7040.02000.540.762025-02-20 01:42:21.6870.04000.820.4055.0
SENINCH2025-02-20 01:42:16.0540.02000.051.772025-02-20 01:42:24.0100.0400-0.430.5164.9
SIMPLCH2025-02-20 01:42:16.3400.02000.370.732025-02-20 01:42:24.5060.04000.131.3965.5
RSLFR2025-02-20 01:42:17.5780.02001.330.012025-02-20 01:42:23.2090.2506-1.460.1966.7
LAUCHCH2025-02-20 01:42:18.0040.02000.750.512025-02-20 01:42:26.7770.04000.251.1873.2
RSPGU2025-02-20 01:42:17.2500.02000.021.782025-02-20 01:42:26.0250.0400-0.111.3473.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
CIRO GUHH0.503.29e-223.7160
REMY GUHH0.252.98e-225.7281
MRGE IVHH0.231.54e-232.4265
SATI GUHH0.471.76e-233.074
DIX CHHH1.081.25e-133.0351
ORO IVEH0.572.18e-244.1115
LSD GUHH0.421.43e-245.9215
VANNICHHH0.248.71e-347.612
MMK CHHH0.447.37e-348.253
SENINCHHH0.325.57e-364.9348
SIMPLCHHH0.153.70e-365.540
LAUCHCHHH0.314.18e-373.218


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 GUHHZ8.2462e-61.0348e-62.5745e-78.4041e-85.1517e-81.0274e-59.8958e-79.5014e-82.0546e-823.7160
CIRO GUHHN7.9945e-68.5848e-72.2063e-78.0378e-83.6436e-81.1029e-51.1853e-65.9272e-81.6057e-823.7160
CIRO GUHHE1.2202e-51.1468e-62.1721e-78.4122e-84.1621e-88.4432e-69.2831e-77.8795e-81.7626e-823.7160
REMY GUHHZ3.5498e-64.8691e-71.7096e-74.3136e-82.0006e-87.1042e-66.7627e-73.3812e-88.9616e-925.7281
REMY GUHHN4.3894e-66.1504e-72.7807e-77.5376e-83.8069e-81.4823e-57.8390e-75.7631e-81.2684e-825.7281
REMY GUHHE4.0669e-64.9407e-72.0199e-76.8128e-83.3266e-81.2471e-57.6682e-74.7294e-81.0180e-825.7281
MRGE IVHHZ2.7609e-62.7221e-75.3681e-82.2848e-81.0553e-82.6650e-62.6155e-71.9893e-85.0899e-932.4265
MRGE IVHHN5.1074e-65.0248e-79.2033e-82.7305e-81.7464e-85.8467e-64.2632e-74.0671e-81.0559e-832.4265
MRGE IVHHE3.9184e-63.7093e-78.3800e-82.5822e-81.7485e-85.0098e-63.3037e-72.7716e-86.4303e-932.4265
SATI GUHHZ2.0166e-62.1827e-76.1125e-81.5479e-88.3496e-93.3069e-61.5494e-71.5172e-84.3233e-933.074
SATI GUHHN4.7164e-64.3011e-71.0059e-72.8851e-81.7018e-87.5307e-63.5142e-73.4137e-88.4277e-933.074
SATI GUHHE4.8695e-65.5786e-71.1796e-73.3160e-82.0168e-87.6474e-63.1797e-74.8465e-81.1837e-833.074
DIX CHHHZ1.9479e-52.3881e-67.4042e-72.4846e-71.2448e-74.1538e-53.2658e-62.2932e-75.2333e-833.0351
DIX CHHHN1.8361e-51.6394e-65.5252e-71.5100e-78.7380e-82.4716e-52.1499e-61.5132e-73.4362e-833.0351
DIX CHHHE2.7017e-52.2238e-69.0733e-72.4939e-71.4234e-73.1191e-53.5144e-62.8230e-75.5196e-833.0351
ORO IVEHZ1.5372e-62.7958e-71.2826e-73.7244e-81.9602e-84.9300e-68.6619e-72.8413e-85.4993e-944.1115
ORO IVEHN3.5990e-64.9764e-72.0277e-77.0812e-83.1521e-88.1606e-68.2994e-75.0116e-81.0988e-844.1115
ORO IVEHE3.8486e-63.7141e-71.6248e-77.3424e-83.8067e-85.4526e-66.6459e-75.2064e-81.0759e-844.1115
LSD GUHHZ2.4177e-62.9068e-71.0235e-73.5585e-82.0194e-83.8138e-63.8605e-73.5323e-86.6101e-945.9215
LSD GUHHN4.6536e-63.2052e-79.3984e-82.4611e-81.2532e-83.4359e-64.9395e-72.2222e-86.8611e-945.9215
LSD GUHHE3.6723e-63.2843e-71.1514e-73.3471e-81.6664e-84.7072e-64.7566e-72.8806e-86.9388e-945.9215
VANNICHHHZ7.8893e-71.0141e-75.3529e-81.9479e-89.5088e-99.9191e-72.3452e-71.5076e-82.2551e-947.612
VANNICHHHN8.6956e-71.0081e-76.9922e-82.8054e-81.3031e-81.0438e-63.2004e-71.5501e-82.6168e-947.612
VANNICHHHE7.0449e-71.0263e-78.5380e-83.1765e-81.2801e-81.5590e-64.0515e-71.9258e-82.7593e-947.612
MMK CHHHZ1.4269e-61.5612e-74.8659e-81.8178e-88.1053e-92.6281e-62.2662e-71.5698e-83.1321e-948.253
MMK CHHHN1.3872e-61.4033e-76.7355e-81.9016e-81.2409e-84.2478e-62.1496e-71.8371e-83.2283e-948.253
MMK CHHHE1.6112e-61.4091e-73.7249e-81.5806e-88.6224e-91.6749e-61.2407e-71.2964e-82.8879e-948.253
EMBD CHHHZ7.4028e-78.8503e-84.7146e-81.6425e-88.7716e-91.4574e-62.3152e-71.4759e-82.2722e-954.931
EMBD CHHHN9.9086e-71.0905e-73.9616e-81.2141e-86.1826e-91.1621e-61.7035e-71.1642e-82.5867e-954.931
EMBD CHHHE9.6060e-79.4167e-83.9786e-81.4757e-87.5934e-91.1220e-61.5175e-71.4163e-82.1551e-954.931
SENINCHHHZ5.0349e-71.0237e-78.9636e-83.3315e-81.6548e-81.3822e-64.0827e-72.2395e-84.0865e-964.9348
SENINCHHHN4.3517e-77.8899e-85.6075e-82.7585e-81.6019e-81.6695e-62.3106e-72.3369e-82.0370e-964.9348
SENINCHHHE5.0878e-77.8937e-85.1115e-82.5298e-81.5174e-81.3518e-62.4140e-72.5301e-82.6806e-964.9348
SIMPLCHHHZ6.0269e-78.5957e-84.0638e-81.4925e-81.4757e-81.4268e-61.9880e-72.1429e-82.9467e-965.540
SIMPLCHHHN8.5785e-79.8205e-82.9149e-81.2783e-89.2306e-91.4570e-61.0358e-79.9467e-92.1978e-965.540
SIMPLCHHHE6.8169e-77.0359e-82.5587e-81.1411e-87.2126e-91.1245e-61.2407e-78.9417e-91.4698e-965.540
LAUCHCHHHZ5.5153e-79.0280e-81.9120e-81.0070e-86.8988e-91.0675e-65.9001e-89.5974e-91.2384e-973.218
LAUCHCHHHN5.7132e-78.4213e-82.6940e-81.1997e-88.3126e-91.1672e-69.7510e-81.0249e-81.3407e-973.218
LAUCHCHHHE3.6357e-75.8117e-84.5710e-81.6317e-81.1124e-81.0161e-61.7385e-71.2256e-81.4873e-973.218
RSP GUHHZ2.6407e-72.8665e-81.0735e-85.2677e-92.8927e-94.9539e-74.1652e-84.2018e-95.3644e-1073.8193
RSP GUHHN2.1026e-72.9234e-81.6683e-85.1607e-93.6464e-95.3036e-76.8859e-84.9728e-96.3321e-1073.8193
RSP GUHHE2.9546e-73.9124e-81.6216e-85.9838e-93.2602e-94.9578e-78.4809e-84.7691e-98.3159e-1073.8193
*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)

rsni