MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.3
2025-07-15 02:38:27 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-15 08:58:53

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Earthquake info - Manual location
Event - ID :250715023803
Magnitude (ML) :0.3 +/- 0.2
Origin Time :2025-07-15 02:38:27.738 (UTC)
Location : Latitude: 44.335 N, Longitude: 7.276 E
Area :Alpi Marittime
Depth (km) :21.97
Distances (km) : 2.7 --- Demonte
5.0 --- Aisone
7.8 --- Valloriate
8.6 --- Vinadio
9.1 --- Monterosso Grana
9.2 --- Moiola
9.5 --- Pradleves
9.7 --- Castelmagno
10.0 --- Rittana
10.4 --- Gaiola
11.5 --- Valdieri
11.9 --- Valgrana
13.1 --- Roccasparvera
13.9 --- Bernezzo
14.0 --- Montemale di Cuneo
14.3 --- Entracque
15.2 --- Caraglio
15.8 --- Vignolo
16.0 --- Cartignano
16.0 --- Sambuco

Quality location estimate: Erh: 0.6 km, Erz: 0.6 km, Nf: 26, Gap: 136 °, Rms: 0.39


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.
VINDIV2025-07-15 02:38:32.1550.02000.022.192025-07-15 02:38:33.6360.0400-1.510.0623.5
STVGU2025-07-15 02:38:32.2460.0100-0.022.172025-07-15 02:38:34.1680.0531-1.200.2325.3
ENRGU2025-07-15 02:38:33.0100.02000.241.032025-07-15 02:38:35.3490.0651-0.900.1528.3
PZZGU2025-07-15 02:38:33.7300.0130-0.002.172025-07-15 02:38:36.7600.0782-1.250.2732.8
ISOFR2025-07-15 02:38:34.7110.02000.970.552025-07-15 02:38:37.8560.10020.051.7633.6
SURFFR2025-07-15 02:38:36.3800.02110.261.012025-07-15 02:38:42.0000.1253-0.101.3245.8
TURFFR2025-07-15 02:38:37.0020.02000.690.392025-07-15 02:38:42.5800.13140.181.3646.6
SAOFFR2025-07-15 02:38:37.6400.02000.860.662025-07-15 02:38:42.8940.1303-0.290.7250.0
GBOSGU2025-07-15 02:38:37.3900.02510.790.602025-07-15 02:38:42.9380.10020.191.3651.4
MVIFFR2025-07-15 02:38:38.9320.02001.200.232025-07-15 02:38:44.9750.04000.011.6054.4
MLIGIV2025-07-15 02:38:37.7260.02000.041.942025-07-15 02:38:44.1650.0400-0.690.1955.0
MGROGU2025-07-15 02:38:38.0380.0200-0.041.792025-07-15 02:38:45.3300.2456-0.181.0058.5
ROROGU2025-07-15 02:38:40.7390.02001.070.502025-07-15 02:38:48.9600.34370.660.7471.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
STV GUHH0.634.93e-225.3158
ENR GUHH0.741.05e-128.3136
PZZ GUHH0.223.00e-232.8327
ISO FRHH0.312.06e-233.6227
TURF FRHH0.096.57e-346.6167
SAOF FRHH0.014.69e-350.0150
GBOS GUHH0.395.45e-351.4103
MGRO GUHH0.104.21e-358.5127
RORO GUHH0.193.40e-371.2111


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.
(°)
STV GUHHZ5.7465e-66.5961e-71.9941e-76.9474e-84.5012e-87.4979e-68.6775e-77.9318e-81.5673e-825.3158
STV GUHHN6.5172e-68.7414e-71.3921e-74.9779e-83.1308e-88.2388e-66.2749e-76.7659e-81.5892e-825.3158
STV GUHHE9.1705e-61.2338e-63.3954e-79.9919e-86.4535e-81.4030e-51.2954e-61.0589e-72.3308e-825.3158
ENR GUHHZ1.7399e-51.4559e-64.1826e-71.4075e-76.2224e-81.4988e-51.6953e-61.1660e-72.9915e-828.3136
ENR GUHHN3.6669e-52.9481e-65.6189e-71.9969e-71.2165e-73.2750e-52.2950e-62.4585e-76.3499e-828.3136
ENR GUHHE4.9578e-53.1034e-65.3007e-71.3469e-79.1352e-82.7363e-51.7493e-61.7253e-75.3758e-828.3136
PZZ GUHHZ4.2992e-66.2982e-73.3094e-79.9011e-85.8202e-87.5028e-61.4319e-69.6736e-81.7546e-832.8327
PZZ GUHHN5.7651e-65.4233e-72.3356e-76.4037e-83.0312e-81.2699e-58.4725e-75.4098e-81.2234e-832.8327
PZZ GUHHE3.9558e-65.8233e-72.6804e-76.5702e-84.3154e-81.0565e-51.0185e-66.8851e-81.0661e-832.8327
ISO FRHHZ2.6197e-63.6035e-77.5736e-83.0666e-81.9034e-83.6091e-63.0696e-73.7331e-87.6967e-933.6227
ISO FRHHN5.7321e-66.0327e-71.1287e-74.1827e-82.7108e-86.7674e-64.1171e-75.1797e-81.1881e-833.6227
ISO FRHHE3.1664e-63.2951e-71.0806e-73.6799e-82.2348e-84.6253e-64.8669e-73.8088e-86.9917e-933.6227
TURF FRHHZ3.6281e-76.8596e-83.5239e-81.5240e-81.2441e-89.6873e-72.1986e-71.7775e-81.2933e-946.6167
TURF FRHHN5.8940e-78.9743e-85.7196e-81.8804e-81.2405e-81.3186e-63.1531e-72.0518e-82.3408e-946.6167
TURF FRHHE6.5133e-79.5769e-84.6968e-81.5707e-81.1265e-81.0394e-62.7107e-71.6333e-81.9133e-946.6167
SAOF FRHHZ2.4147e-75.2049e-84.6706e-81.8212e-89.5605e-95.3108e-72.9608e-71.3396e-81.6629e-950.0150
SAOF FRHHN3.7157e-74.1749e-83.0377e-81.4452e-88.8268e-94.6962e-71.3390e-71.5431e-81.1561e-950.0150
SAOF FRHHE3.6850e-76.3809e-83.7600e-81.7343e-81.2358e-87.4333e-72.1446e-71.7953e-81.7110e-950.0150
GBOS GUHHZ6.1023e-78.0743e-84.7274e-81.4622e-87.8312e-91.7074e-62.4552e-71.0405e-81.9426e-951.4103
GBOS GUHHN4.9112e-77.4534e-83.8582e-82.4016e-81.3399e-88.3230e-72.2260e-71.9216e-81.7833e-951.4103
GBOS GUHHE5.8987e-78.4339e-84.5764e-81.1039e-86.5900e-91.5130e-61.6871e-71.1075e-82.2299e-951.4103
MGRO GUHHZ3.0085e-74.2901e-82.3386e-81.7401e-81.2451e-86.1522e-79.0381e-82.0166e-81.2559e-958.5127
MGRO GUHHN5.1459e-76.8933e-83.4028e-81.5351e-81.0411e-81.2110e-61.5457e-71.4651e-81.7490e-958.5127
MGRO GUHHE5.0490e-76.9723e-83.5391e-81.3446e-89.3612e-95.8747e-72.3365e-71.6521e-82.3365e-958.5127
RORO GUHHZ2.9049e-74.1096e-82.4102e-89.6159e-97.2843e-96.7432e-78.8730e-81.0848e-81.0329e-971.2111
RORO GUHHN4.3526e-75.1067e-82.8894e-81.0457e-86.8057e-97.3477e-71.9173e-77.9170e-91.1118e-971.2111
RORO GUHHE4.8124e-76.4171e-82.6415e-81.2651e-82.0258e-81.0701e-68.3648e-83.6787e-84.6200e-971.2111
*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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