MANUAL Location - Area: Frignano , magnitude (ML): 0.5
2025-02-20 19:43:23 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-02-21 09:40:43

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Earthquake info - Manual location
Event - ID :250220194303
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2025-02-20 19:43:23.246 (UTC)
Location : Latitude: 44.452 N, Longitude: 10.466 E
Area :Frignano
Depth (km) :23.07
Distances (km) : 4.2 --- Carpineti
5.5 --- Castelnovo ne Monti
7.1 --- Casina
9.6 --- Villa Minozzo
10.8 --- Vetto
11.1 --- Toano
12.1 --- Baiso
14.5 --- Busana
15.5 --- Ramiseto
16.2 --- Viano
16.3 --- Montefiorino
16.9 --- Canossa
17.7 --- Vezzano sul Crostolo
17.8 --- Ligonchio
18.1 --- Prignano sulla Secchia
18.9 --- Neviano Degli Arduini
19.0 --- Collagna
19.2 --- Frassinoro
19.7 --- San Polo d Enza
20.3 --- Palagano

Quality location estimate: Erh: 1 km, Erz: 1.1 km, Nf: 14, Gap: 188 °, Rms: 0.08


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.
ERBMIV2025-02-20 19:43:28.0800.0080-0.021.842025-02-20 19:43:30.5100.3007-1.300.0124.6
GSCLGU2025-02-20 19:43:28.9600.01000.031.702025-02-20 19:43:32.8280.2226-0.230.7728.0
SARMGU2025-02-20 19:43:30.1950.02000.041.632025-02-20 19:43:35.1700.19150.070.9938.7
GRAMGU2025-02-20 19:43:30.4500.0160-0.011.742025-02-20 19:43:35.6200.1163-0.051.2140.0
VLCMN2025-02-20 19:43:30.4970.0200-0.011.732025-02-20 19:43:36.1000.04000.430.1240.7
ZCCAIV2025-02-20 19:43:34.2050.02001.060.002025-02-20 19:43:40.6400.14340.051.0148.3
BDIIV2025-02-20 19:43:32.2910.0200-0.150.982025-02-20 19:43:38.5790.0400-0.420.2750.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
GSCL GUHH0.849.78e-228.0139
SARM GUEH0.372.16e-238.7190
VLC MNHH0.471.43e-240.7191
ZCCA IVHH0.321.03e-248.3105
BDI IVHH0.642.48e-250.5166


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.
(°)
ERBM IVEHZ4.2663e-55.0166e-61.0938e-62.7048e-71.6187e-75.8259e-53.2620e-62.6871e-76.8345e-824.6230
ERBM IVEHN3.5649e-54.1091e-61.8028e-64.8490e-72.6806e-78.4628e-58.3779e-64.3287e-78.2845e-824.6230
ERBM IVEHE5.7583e-56.9360e-63.4927e-69.1665e-75.1584e-71.2861e-41.3541e-58.0019e-71.5212e-724.6230
GSCL GUHHZ2.6581e-64.2437e-73.4816e-71.4355e-77.1109e-86.2906e-61.8922e-68.8195e-81.0440e-828.0139
GSCL GUHHN4.2474e-61.0447e-69.4405e-73.5907e-71.5603e-71.3343e-56.2335e-62.3646e-73.1246e-828.0139
GSCL GUHHE2.6738e-68.5111e-78.2955e-72.8862e-71.3498e-78.8394e-66.1283e-61.7747e-72.1842e-828.0139
SARM GUEHZ8.7191e-71.4059e-79.9913e-83.9667e-81.9547e-81.8103e-65.8396e-72.6698e-83.4174e-938.7190
SARM GUEHN1.4127e-62.2106e-71.6314e-71.0042e-74.7407e-82.9891e-67.2750e-75.0484e-85.7542e-938.7190
SARM GUEHE1.9144e-62.0413e-71.8390e-71.3081e-75.2224e-82.6319e-68.3572e-76.1796e-86.7179e-938.7190
GRAM GUHHZ4.0708e-68.2935e-74.9344e-71.5005e-77.9962e-89.7470e-62.9993e-61.1614e-71.5943e-840.0278
GRAM GUHHN3.3448e-68.5740e-77.7525e-72.8062e-71.2410e-71.6593e-54.9004e-61.8153e-72.4288e-840.0278
GRAM GUHHE6.6278e-61.6301e-61.3013e-64.2111e-71.9047e-71.0430e-51.0001e-52.7262e-74.1538e-840.0278
VLC MNHHZ9.1168e-71.3756e-79.2444e-84.9320e-83.0774e-82.3305e-64.6705e-73.1507e-83.8010e-940.7191
VLC MNHHN1.8232e-61.7674e-71.0061e-76.1471e-84.1775e-83.2158e-66.0261e-74.8639e-84.3388e-940.7191
VLC MNHHE1.4778e-61.9060e-71.3780e-75.4175e-82.8613e-83.3242e-68.2583e-73.8876e-85.7453e-940.7191
ZCCA IVHHZ2.4567e-75.8208e-85.5152e-83.4875e-81.4906e-88.6912e-73.1602e-71.8539e-82.0505e-948.3105
ZCCA IVHHN2.5952e-77.4467e-86.9812e-85.8806e-82.0822e-85.7611e-74.9499e-72.3795e-83.1987e-948.3105
ZCCA IVHHE3.7438e-77.3984e-87.5149e-85.5664e-82.2575e-87.0823e-73.8149e-72.5813e-83.0116e-948.3105
BDI IVHHZ7.2079e-71.1667e-71.0217e-74.9667e-82.5302e-81.8351e-67.6846e-72.9752e-83.4548e-950.5166
BDI IVHHN8.0775e-72.4461e-72.2804e-79.2856e-84.3063e-82.9822e-61.9544e-65.1516e-86.5569e-950.5166
BDI IVHHE9.3485e-71.8624e-71.7559e-77.4630e-83.1921e-83.4373e-61.1502e-64.2782e-86.1722e-950.5166
*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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