MANUAL Location - Area: Appennino pistoiese , magnitude (ML): 0.5
2025-08-28 06:24:52 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-28 09:44:13

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Earthquake info - Manual location
Event - ID :250828062426
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2025-08-28 06:24:52.599 (UTC)
Location : Latitude: 44.166 N, Longitude: 10.679 E
Area :Appennino pistoiese
Depth (km) :10.30
Distances (km) : 2.4 --- Abetone
3.0 --- Fiumalbo
6.7 --- Pievepelago
7.6 --- Riolunato
9.5 --- Cutigliano
9.8 --- Montecreto
10.3 --- Sestola
10.4 --- Fanano
15.1 --- San Marcello Pistoiese
16.5 --- Lama Mocogno
16.7 --- Coreglia Antelminelli
16.7 --- Piteglio
16.8 --- Frassinoro
17.1 --- Lizzano in Belvedere
17.7 --- Palagano
18.2 --- Fosciandora
18.4 --- Barga
18.6 --- Bagni di Lucca
20.4 --- Polinago
20.5 --- Gaggio Montano

Quality location estimate: Erh: 1 km, Erz: 1.7 km, Nf: 14, Gap: 106 °, Rms: 0.10


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.
POPMGU2025-08-28 06:24:56.1200.00900.011.802025-08-28 06:24:58.7230.0400-0.071.4018.3
GSCLGU2025-08-28 06:24:57.7020.0200-0.071.412025-08-28 06:25:00.7570.0400-0.820.1024.4
CARDGU2025-08-28 06:24:57.1300.0120-0.001.812025-08-28 06:25:00.6400.07320.091.2424.5
SARMGU2025-08-28 06:24:57.3100.01200.011.782025-08-28 06:25:00.6900.0732-0.140.9025.0
VLCMN2025-08-28 06:24:57.5100.01300.160.562025-08-28 06:25:00.9240.10020.021.3325.8
ZCCAIV2025-08-28 06:24:59.7000.02610.071.422025-08-28 06:25:05.9350.04000.910.0033.2
EQUIGU2025-08-28 06:25:00.0590.0200-0.340.112025-08-28 06:25:05.4110.0400-0.660.1243.3


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
POPM GUHH0.672.94e-118.3155
GSCL GUHH0.434.93e-224.4341
CARD GUHH0.891.40e-124.5225
SARM GUEH0.395.20e-225.0275
VLC MNHH0.776.93e-225.8268
ZCCA IVHH0.281.96e-233.249
EQUI GUHH0.341.34e-243.3270


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.
(°)
POPM GUHHZ2.0634e-52.9010e-61.6850e-64.3593e-72.6198e-75.7396e-55.4727e-64.2652e-77.2190e-818.3155
POPM GUHHN2.6369e-56.0044e-62.7938e-66.0242e-73.7982e-79.5355e-58.0888e-66.7115e-71.4015e-718.3155
POPM GUHHE2.3569e-53.6992e-62.3661e-67.5400e-73.6846e-77.2212e-51.2015e-55.3568e-79.3365e-818.3155
GSCL GUHHZ1.3050e-62.3153e-71.3218e-75.3288e-82.6327e-84.6771e-66.1263e-74.0833e-85.8710e-924.4341
GSCL GUHHN3.0512e-65.4503e-73.5968e-71.4609e-75.3745e-87.4377e-62.0353e-68.3843e-81.4232e-824.4341
GSCL GUHHE2.7918e-64.7299e-73.2362e-71.5226e-79.0540e-86.2306e-61.8618e-61.0679e-71.6156e-824.4341
CARD GUHHZ1.8221e-51.8125e-64.3157e-71.6920e-77.2626e-82.4969e-51.5358e-61.4357e-73.2986e-824.5225
CARD GUHHN4.7454e-53.7971e-69.7458e-74.2257e-71.8995e-75.5825e-52.8482e-63.2069e-77.8538e-824.5225
CARD GUHHE2.8731e-53.2989e-61.0729e-62.8087e-71.5665e-77.7073e-54.3893e-62.9794e-76.7351e-824.5225
SARM GUEHZ3.3790e-63.7137e-72.1651e-75.9237e-82.9080e-87.6841e-69.2657e-74.7488e-87.3447e-925.0275
SARM GUEHN4.3790e-66.7622e-74.3263e-71.6693e-78.8998e-87.5341e-61.9012e-61.4545e-72.1152e-825.0275
SARM GUEHE4.1857e-65.9273e-73.0259e-71.2390e-75.4284e-87.1315e-61.3186e-67.8014e-81.4019e-825.0275
VLC MNHHZ5.7387e-65.8585e-71.7995e-76.9339e-83.9255e-84.7330e-68.3305e-75.9568e-88.4553e-925.8268
VLC MNHHN5.0673e-69.3834e-75.6550e-71.9297e-71.0879e-71.3721e-53.1215e-61.7311e-72.3747e-825.8268
VLC MNHHE4.6756e-69.0764e-73.5651e-71.1699e-77.0477e-81.4615e-51.7942e-61.0640e-71.7847e-825.8268
ZCCA IVHHZ1.5690e-62.6482e-71.2387e-75.8599e-83.0956e-83.2249e-69.2758e-73.2153e-84.8435e-933.249
ZCCA IVHHN1.9261e-62.2609e-71.8833e-71.0268e-74.3223e-83.4873e-61.1538e-65.9535e-85.3338e-933.249
ZCCA IVHHE2.9621e-63.0359e-71.8937e-78.2949e-83.6287e-83.4258e-61.0792e-64.5109e-87.5100e-933.249
EQUI GUHHZ2.5688e-62.7239e-79.7302e-84.2159e-82.2908e-83.8620e-64.1060e-72.6654e-86.3777e-943.3270
EQUI GUHHN1.5150e-61.8731e-79.7209e-85.3137e-83.6052e-83.7102e-63.9315e-74.0227e-85.2000e-943.3270
EQUI GUHHE1.3319e-61.4336e-78.2389e-85.4446e-83.8059e-83.1721e-64.0506e-73.3707e-84.0184e-943.3270
*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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