MANUAL Location - Area: Valdarno inferiore , magnitude (ML): 0.5
2025-07-07 21:10:51 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-08 07:31:06

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Earthquake info - Manual location
Event - ID :250707211026
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2025-07-07 21:10:51.919 (UTC)
Location : Latitude: 43.819 N, Longitude: 10.415 E
Area :Valdarno inferiore
Depth (km) :3.71
Distances (km) : 4.6 --- Vecchiano
6.5 --- San Giuliano Terme
7.8 --- Lucca
8.7 --- Massarosa
11.4 --- Pisa
12.9 --- Capannori
13.0 --- Calci
14.5 --- Viareggio
16.2 --- Camaiore
16.5 --- Pescaglia
16.6 --- Porcari
17.2 --- Buti
18.6 --- Vicopisano
19.1 --- Cascina
19.9 --- Fabbriche di Vallico
20.4 --- Bientina
20.7 --- Montecarlo
20.7 --- Borgo a Mozzano
21.1 --- Altopascio
21.2 --- Pietrasanta

Quality location estimate: Erh: 1.1 km, Erz: 0.9 km, Nf: 14, Gap: 188 °, Rms: 0.12


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.
MAIMGU2025-07-07 21:10:54.8200.0080-0.031.752025-07-07 21:10:57.0600.04210.021.7112.7
PIIIV2025-07-07 21:10:54.4400.0070-0.810.102025-07-07 21:10:56.2500.0360-1.510.0114.5
CMEIT2025-07-07 21:10:55.7350.0602-0.031.602025-07-07 21:10:58.6530.16040.021.1418.0
CARDGU2025-07-07 21:10:56.7200.01400.031.742025-07-07 21:11:00.1900.0772-0.041.3823.9
POPMGU2025-07-07 21:10:59.0400.02010.001.702025-07-07 21:11:04.2330.2005-0.160.8237.4
VLCMN2025-07-07 21:10:59.2020.10040.140.912025-07-07 21:11:04.5140.25060.160.7238.1
EQUIGU2025-07-07 21:10:59.8710.0401-0.280.302025-07-07 21:11:05.3400.2286-0.900.1344.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
MAIM GUHH0.341.17e-112.731
PII IVHH0.813.06e-114.5141
CME ITHN0.571.18e-118.0329
CARD GUHH0.617.69e-223.913
POPM GUHH0.383.97e-237.447
VLC MNHH0.461.62e-238.1357
EQUI GUHH0.642.57e-244.0332


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.
(°)
MAIM GUHHZ9.1894e-61.0542e-64.6846e-71.4076e-76.2865e-81.8596e-52.7368e-61.0374e-72.2755e-812.731
MAIM GUHHN1.4264e-51.9295e-66.9917e-72.2115e-71.1007e-73.0184e-52.2119e-61.7837e-74.1972e-812.731
MAIM GUHHE1.6010e-52.8027e-69.4064e-72.4271e-71.4800e-72.5932e-53.0820e-62.8338e-76.2755e-812.731
PII IVHHZ2.7253e-52.9877e-61.8276e-64.6416e-72.3312e-73.2575e-59.3724e-63.6693e-76.8735e-814.5141
PII IVHHN3.4915e-54.6079e-62.2115e-67.3681e-74.1561e-73.4367e-51.2914e-56.9908e-71.2674e-714.5141
PII IVHHE2.9407e-54.1806e-62.1804e-67.7521e-72.9201e-76.4690e-51.2820e-55.0378e-71.0751e-714.5141
CME ITHNZ7.4618e-61.3261e-66.6830e-72.9844e-72.3969e-72.5022e-53.4813e-63.5265e-72.8675e-818.0329
CME ITHNN1.1070e-51.9443e-61.1177e-64.3240e-72.9467e-72.3653e-54.4866e-64.3935e-74.6137e-818.0329
CME ITHNE1.2236e-52.0153e-61.1649e-64.3297e-72.9759e-72.8934e-55.5226e-63.3662e-74.5017e-818.0329
CARD GUHHZ5.7989e-65.3662e-72.6534e-79.0628e-84.5305e-81.0589e-59.5845e-76.6081e-81.1359e-823.913
CARD GUHHN1.1200e-51.3787e-66.8900e-71.5310e-77.9345e-83.5705e-52.2283e-61.4221e-73.1852e-823.913
CARD GUHHE1.3513e-51.8111e-66.2961e-71.4638e-78.6614e-82.8938e-52.3619e-61.6874e-73.3497e-823.913
POPM GUHHZ3.1998e-65.2673e-72.2779e-76.2579e-83.8198e-88.8709e-68.9492e-76.2904e-81.1719e-837.447
POPM GUHHN3.6281e-65.9200e-73.6620e-79.1242e-85.0138e-88.8437e-61.3181e-68.4503e-81.5840e-837.447
POPM GUHHE2.6510e-65.3241e-73.8000e-78.3423e-85.1451e-88.8960e-61.3615e-67.4337e-81.1830e-837.447
VLC MNHHZ1.4578e-61.8521e-77.5660e-83.7121e-82.9029e-83.1235e-63.5071e-73.9611e-85.8061e-938.1357
VLC MNHHN1.8649e-62.4035e-71.0295e-74.0448e-82.7464e-84.5576e-63.4124e-73.8727e-84.9310e-938.1357
VLC MNHHE3.1258e-63.3146e-71.1765e-74.4669e-83.2385e-85.2841e-64.8497e-74.9471e-87.7642e-938.1357
EQUI GUHHZ2.6874e-64.7966e-73.1914e-78.3982e-85.4051e-85.4660e-61.4282e-67.3607e-81.2730e-844.0332
EQUI GUHHN2.4484e-63.3035e-72.1039e-77.1811e-86.9156e-85.4390e-69.1593e-79.9194e-88.7072e-944.0332
EQUI GUHHE2.6653e-63.1929e-72.2928e-76.7873e-84.1827e-87.1086e-69.4461e-77.5548e-87.3210e-944.0332
*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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