MANUAL Location - Area: Appennino modenese , magnitude (ML): 0.9
2025-07-18 07:18:57 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-18 08:14:12

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Earthquake info - Manual location
Event - ID :250718071809
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2025-07-18 07:18:57.812 (UTC)
Location : Latitude: 44.368 N, Longitude: 10.930 E
Area :Appennino modenese
Depth (km) :21.01
Distances (km) : 5.6 --- Zocca
7.1 --- Guiglia
8.4 --- Pavullo nel Frignano
10.5 --- Marano sul Panaro
10.8 --- Montese
11.3 --- Castel d Aiano
11.7 --- Savigno
12.9 --- Serramazzoni
13.6 --- Castello di Serravalle
14.2 --- Vignola
15.0 --- Savignano sul Panaro
15.2 --- Castelvetro di Modena
16.5 --- Polinago
17.1 --- Lama Mocogno
17.3 --- Vergato
17.8 --- Monteveglio
18.3 --- Maranello
19.0 --- Gaggio Montano
19.6 --- Bazzano
19.8 --- Sestola

Quality location estimate: Erh: 0.8 km, Erz: 1.8 km, Nf: 14, Gap: 181 °, Rms: 0.19


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.
ZCCAIV2025-07-18 07:19:02.5500.01500.021.802025-07-18 07:19:07.3300.10731.030.1522.1
GSCLGU2025-07-18 07:19:04.6800.0170-0.031.872025-07-18 07:19:09.7200.1033-0.051.5434.8
POPMGU2025-07-18 07:19:05.6600.0552-0.300.772025-07-18 07:19:12.0300.1283-0.041.4144.1
MTRZIV2025-07-18 07:19:06.6000.0221-0.101.612025-07-18 07:19:16.1600.04002.390.0045.3
ERBMIV2025-07-18 07:19:07.8530.02000.620.132025-07-18 07:19:13.9570.0400-0.380.6746.9
SARMGU2025-07-18 07:19:07.3800.02510.051.532025-07-18 07:19:14.1000.2567-0.280.9451.7
MAIMGU2025-07-18 07:19:10.3140.02000.830.242025-07-18 07:19:17.8980.0400-0.001.3365.1


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
GSCL GUHH1.171.40e-134.8266
MTRZ IVHH0.853.91e-245.399
ERBM IVEH0.612.14e-246.9278
SARM GUEH0.712.61e-251.7244
MAIM GUHH1.022.47e-265.1215


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.
(°)
ZCCA IVHHZ5.2169e-57.0010e-62.7619e-61.1964e-66.1817e-75.4094e-51.4976e-59.7464e-78.9862e-822.1118
ZCCA IVHHN2.7976e-53.0427e-62.8551e-62.0628e-66.5659e-73.7207e-51.4444e-58.9630e-79.6903e-822.1118
ZCCA IVHHE3.0024e-56.6739e-65.8492e-65.1192e-62.0297e-63.9305e-53.2372e-52.5623e-62.6479e-722.1118
GSCL GUHHZ1.9321e-63.1733e-73.1723e-71.4009e-75.8549e-85.7755e-61.4056e-67.9450e-89.7164e-934.8266
GSCL GUHHN6.2922e-61.6029e-61.3315e-64.7791e-72.1652e-71.2016e-55.9856e-63.3339e-74.1188e-834.8266
GSCL GUHHE4.3516e-61.2430e-61.0321e-64.0989e-72.0069e-71.2320e-56.6665e-62.6518e-73.3832e-834.8266
POPM GUHHZ7.6799e-61.4489e-61.0497e-63.2821e-71.2772e-71.9998e-55.5736e-62.0618e-73.6689e-844.1201
POPM GUHHN1.1202e-52.3038e-61.5802e-65.0998e-72.3447e-72.8999e-57.0573e-63.1075e-75.6447e-844.1201
POPM GUHHE1.0056e-52.7414e-62.2959e-67.6555e-74.2165e-72.6459e-51.6745e-55.6316e-76.5052e-844.1201
MTRZ IVHHZ1.3108e-61.7328e-71.9097e-71.3008e-76.0653e-82.2765e-61.2134e-66.8287e-85.7260e-945.399
MTRZ IVHHN2.0913e-63.0818e-73.2462e-72.9090e-71.1527e-74.1268e-61.6386e-61.1694e-71.1285e-845.399
MTRZ IVHHE7.0604e-71.9391e-71.3399e-79.5835e-84.7080e-81.2780e-67.6849e-75.8644e-85.9548e-945.399
ERBM IVEHZ1.5537e-62.5321e-71.4984e-77.4068e-84.1511e-84.1467e-65.6228e-75.6990e-85.3650e-946.9278
ERBM IVEHN1.8804e-62.9597e-72.2397e-78.0303e-84.0120e-83.6052e-61.0806e-67.3990e-87.9023e-946.9278
ERBM IVEHE2.5065e-63.8250e-72.0447e-77.4161e-83.6350e-84.8038e-69.4417e-75.3601e-88.4155e-946.9278
SARM GUEHZ9.2891e-72.7013e-71.8510e-77.9706e-83.1361e-82.9431e-61.1765e-64.4405e-85.9227e-951.7244
SARM GUEHN7.9040e-71.8133e-71.6510e-71.3093e-74.4271e-82.8739e-66.3665e-74.7348e-85.8089e-951.7244
SARM GUEHE8.2715e-71.8740e-72.1309e-71.9181e-76.2933e-82.2477e-61.3617e-67.4417e-87.6937e-951.7244
MAIM GUHHZ5.2583e-71.1953e-71.0920e-77.1429e-82.7176e-81.8210e-65.8163e-72.9651e-83.1476e-965.1215
MAIM GUHHN6.3971e-71.7479e-71.9940e-71.3010e-75.1550e-82.3181e-67.3367e-76.6897e-86.3977e-965.1215
MAIM GUHHE8.2129e-71.8395e-71.6607e-71.0369e-75.0072e-82.6667e-61.0028e-66.9981e-87.2612e-965.1215
*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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