MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.2
2025-07-03 22:12:07 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-04 07:23:08

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Earthquake info - Manual location
Event - ID :250703221142
Magnitude (ML) :0.2 +/- 0.2
Origin Time :2025-07-03 22:12:07.235 (UTC)
Location : Latitude: 44.072 N, Longitude: 7.796 E
Area :Alpi Marittime
Depth (km) :5.77
Distances (km) : 0.9 --- Mendatica
1.7 --- Montegrosso Pian Latte
2.9 --- Cosio di Arroscia
3.9 --- Briga Alta
5.8 --- Pornassio
8.2 --- Rezzo
9.1 --- Triora
9.2 --- Molini di Triora
9.6 --- Armo
9.9 --- Pieve di Teco
13.2 --- Ormea
13.5 --- Vessalico
13.6 --- Carpasio
13.6 --- Caprauna
14.1 --- Aurigo
14.9 --- Borghetto d Arroscia
15.7 --- Caravonica
15.9 --- Cesio
16.0 --- Borgomaro
16.4 --- Montalto Ligure

Quality location estimate: Erh: 0.7 km, Erz: 0.8 km, Nf: 22, Gap: 59 °, Rms: 0.22


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.
MGROGU2025-07-03 22:12:09.2300.0030-0.011.462025-07-03 22:12:10.1580.0400-0.610.238.2
PVTIT2025-07-03 22:12:10.1920.08030.241.24--:---.-----.---.-- 12.2
MLIGIV2025-07-03 22:12:10.5110.0401-0.011.422025-07-03 22:12:12.3520.1604-0.700.2114.2
GBOSGU2025-07-03 22:12:11.5700.01000.201.252025-07-03 22:12:14.1600.0611-0.041.2820.3
SAOFFR2025-07-03 22:12:12.3040.08030.450.59--:---.-----.---.-- 22.2
ROROGU2025-07-03 22:12:12.1000.01100.330.852025-07-03 22:12:15.0800.06910.111.4622.8
BIGNGU2025-07-03 22:12:12.4250.08030.410.722025-07-03 22:12:15.5000.0712-0.011.3223.9
TURFFR2025-07-03 22:12:14.7300.01700.550.282025-07-03 22:12:19.0900.10430.011.2634.5
ENRGU2025-07-03 22:12:13.9990.04010.171.372025-07-03 22:12:18.5300.10730.141.3635.5
STVGU2025-07-03 22:12:15.1860.15060.141.332025-07-03 22:12:20.1200.1675-0.270.5542.6
QLNOIV2025-07-03 22:12:17.0900.0261-0.011.362025-07-03 22:12:23.3700.1584-0.650.2352.4
PZZGU2025-07-03 22:12:20.5000.03610.201.312025-07-03 22:12:29.3700.2196-0.020.9472.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MGRO GUHH0.554.53e-18.2163
GBOS GUHH0.151.89e-220.311
RORO GUHH0.012.13e-222.878
BIGN GUEH0.172.83e-223.9192
TURF FRHH-0.097.76e-334.5252
ENR GUHH0.564.56e-235.5300
STV GUHH0.216.98e-342.6297
QLNO IVHH0.074.88e-352.457
PZZ GUHH0.175.20e-372.9312


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.
(°)
MGRO GUHHZ2.4208e-52.4165e-68.9527e-72.4636e-71.3153e-74.0411e-53.2602e-62.1375e-75.1576e-88.2163
MGRO GUHHN5.3322e-55.0871e-61.8195e-66.4933e-74.3717e-79.9489e-56.5243e-67.3073e-71.2516e-78.2163
MGRO GUHHE6.6090e-58.7698e-62.8410e-69.9922e-75.1735e-71.2536e-41.2194e-59.0508e-71.8956e-78.2163
GBOS GUHHZ2.3200e-63.6584e-71.1946e-74.3065e-82.4192e-83.3619e-64.5884e-73.9563e-88.2683e-920.311
GBOS GUHHN2.0882e-63.3319e-71.3018e-74.9893e-82.3989e-83.4382e-65.1167e-73.2074e-85.8817e-920.311
GBOS GUHHE2.1441e-64.0744e-71.4793e-74.4745e-82.3550e-84.6015e-65.3222e-73.8254e-87.8804e-920.311
RORO GUHHZ2.1661e-62.4106e-71.4071e-73.9563e-81.8662e-86.0384e-67.3453e-72.6118e-85.0756e-922.878
RORO GUHHN2.8144e-64.1513e-71.9219e-75.0908e-82.8534e-87.7929e-66.8143e-75.1090e-89.2813e-922.878
RORO GUHHE3.0655e-63.8689e-71.9978e-74.4584e-82.6834e-86.7777e-68.5156e-74.3010e-88.2797e-922.878
BIGN GUEHZ1.6855e-63.0591e-71.3184e-74.6803e-82.7136e-85.6339e-66.2416e-74.2524e-87.7410e-923.9192
BIGN GUEHN2.8902e-63.9450e-72.2152e-76.0612e-83.2703e-87.6938e-68.1302e-75.3400e-81.0270e-823.9192
BIGN GUEHE3.2615e-64.0248e-71.4007e-73.8113e-82.4413e-87.2120e-65.6745e-73.9177e-88.6859e-923.9192
TURF FRHHZ5.4228e-76.9765e-84.0801e-81.5186e-87.7317e-98.3735e-72.8275e-71.0992e-81.9056e-934.5252
TURF FRHHN1.8603e-61.5592e-77.1051e-81.9590e-81.1162e-82.1220e-64.0069e-71.6829e-82.3109e-934.5252
TURF FRHHE9.3704e-71.0273e-75.1708e-81.2358e-81.0136e-81.9775e-62.6686e-71.5174e-82.4163e-934.5252
ENR GUHHZ4.2260e-65.1333e-71.3389e-72.9960e-81.7876e-85.2183e-65.7485e-73.0956e-89.4447e-935.5300
ENR GUHHN1.3668e-51.2997e-62.7488e-78.8375e-84.1455e-81.1787e-59.1898e-78.7865e-82.4625e-835.5300
ENR GUHHE1.3047e-58.8960e-71.7327e-75.5352e-83.1818e-88.0155e-68.0303e-76.7043e-81.7809e-835.5300
STV GUHHZ1.2520e-61.2454e-75.1623e-81.2576e-85.8706e-91.9818e-61.9659e-71.0778e-82.5619e-942.6297
STV GUHHN1.4102e-61.6187e-76.7205e-81.5421e-88.2535e-92.2261e-62.4891e-71.4075e-83.3074e-942.6297
STV GUHHE2.2741e-62.3715e-75.1971e-81.4525e-87.3629e-92.9394e-61.9769e-71.5946e-85.1855e-942.6297
QLNO IVHHZ3.5153e-73.4750e-82.2617e-81.0265e-86.0467e-94.6991e-71.1763e-79.1948e-98.4458e-1052.457
QLNO IVHHN5.9428e-77.8523e-84.6060e-81.5593e-89.3550e-91.0208e-63.6805e-71.2241e-81.7109e-952.457
QLNO IVHHE5.9637e-77.5973e-84.6994e-81.5508e-89.7827e-91.0431e-62.1604e-71.5363e-81.7192e-952.457
PZZ GUHHZ5.9294e-71.0510e-75.3729e-81.3114e-87.6193e-91.3336e-62.6355e-71.1442e-81.7668e-972.9312
PZZ GUHHN6.3244e-78.3531e-85.5332e-82.0340e-81.0927e-81.6953e-62.0937e-71.4174e-81.9981e-972.9312
PZZ GUHHE4.9262e-71.1826e-76.3135e-81.5933e-88.7590e-91.3786e-62.8046e-71.3110e-82.3491e-972.9312
*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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