MANUAL Location - Area: Valle del Trebbia , magnitude (ML): 2.0
2025-05-02 09:17:38 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-05-02 09:53:01

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Earthquake info - Manual location
Event - ID :250502091611
Magnitude (ML) :2.0 +/- 0.2
Origin Time :2025-05-02 09:17:38.351 (UTC)
Location : Latitude: 44.949 N, Longitude: 9.495 E
Area :Valle del Trebbia
Depth (km) :12.52
Distances (km) : 2.1 --- Agazzano
2.5 --- Piozzano
4.4 --- Gazzola
7.0 --- Pianello Val Tidone
8.5 --- Borgonovo Val Tidone
9.3 --- Rivergaro
9.5 --- Gragnano Trebbiense
9.5 --- Ziano Piacentino
10.5 --- Travo
11.2 --- Gossolengo
11.9 --- Pecorara
12.5 --- Sarmato
13.0 --- Rottofreno
13.3 --- Castel San Giovanni
13.5 --- Rovescala
13.9 --- Nibbiano
14.3 --- Vigolzone
14.5 --- San Damiano al Colle
14.5 --- Ponte dell Olio
14.8 --- Golferenzo

Quality location estimate: Erh: 0.9 km, Erz: 1.3 km, Nf: 28, Gap: 127 °, 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.
GORRGU2025-05-02 09:17:46.9300.02110.001.792025-05-02 09:17:53.4700.1293-0.291.0243.3
SARZIV2025-05-02 09:17:49.0270.02001.340.012025-05-02 09:17:57.8590.04003.080.0048.4
BVTIT2025-05-02 09:17:48.2420.0200-0.141.462025-05-02 09:17:56.3550.04000.211.2052.2
TGLIT2025-05-02 09:17:48.9110.02000.041.722025-05-02 09:17:56.4480.0400-0.650.3054.7
VRLIT2025-05-02 09:17:50.3310.02000.241.102025-05-02 09:17:58.9430.0400-0.221.1864.1
GRAMGU2025-05-02 09:17:51.1200.03410.041.672025-05-02 09:18:01.5400.04000.800.1069.3
RNCAGU2025-05-02 09:17:51.3100.03510.271.002025-05-02 09:18:00.8550.04000.161.2869.5
MSSAIV2025-05-02 09:17:51.1100.0361-0.101.572025-05-02 09:18:01.0840.3347-0.101.0571.6
PCPGU2025-05-02 09:17:54.2500.04920.151.382025-05-02 09:18:10.1550.04004.350.0088.6
MDIIV2025-05-02 09:17:55.8800.04620.051.552025-05-02 09:18:07.8650.2877-1.490.0893.8
PLMAIV2025-05-02 09:17:56.4890.0200-0.181.302025-05-02 09:18:10.1940.10020.081.17104.7
MUGIOCH2025-05-02 09:17:58.7100.0572-0.231.172025-05-02 09:18:13.4650.4939-1.090.29114.5
VAREIV2025-05-02 09:17:59.4600.05820.111.382025-05-02 09:18:14.8060.5819-0.870.43117.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
GORR GUHH1.996.04e-143.3203
SARZ IVHH2.207.77e-148.4259
BVT ITHN2.024.34e-152.2157
TGL ITHN1.511.24e-154.7209
GRAM GUHH1.782.53e-169.3138
MSSA IVHH1.921.76e-171.6179
MDI IVHH2.352.62e-193.811
PLMA IVHH2.101.09e-1104.7164
MUGIOCHHH2.316.84e-2114.5342
VARE IVHH2.047.36e-2117.5331


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.
(°)
GORR GUHHZ1.2839e-52.5376e-62.5256e-61.4999e-69.8512e-74.5054e-51.4287e-51.1689e-69.7199e-843.3203
GORR GUHHN1.1736e-53.6441e-62.5541e-62.6833e-61.3176e-64.9793e-59.8156e-61.2815e-61.2102e-743.3203
GORR GUHHE2.1816e-56.1978e-63.6373e-63.2914e-62.3343e-64.6458e-52.0744e-52.6572e-61.7652e-743.3203
SARZ IVHHZ1.0033e-53.2719e-63.1940e-61.8729e-67.0050e-73.1510e-51.3637e-58.0392e-71.0895e-748.4259
SARZ IVHHN1.5553e-56.4043e-65.0915e-63.6682e-61.7449e-65.1814e-53.5040e-52.2236e-61.9472e-748.4259
SARZ IVHHE1.0519e-53.7044e-63.7386e-62.1373e-68.4230e-72.0070e-52.8971e-59.1229e-71.0827e-748.4259
BVT ITHNZ5.9047e-61.2625e-61.3420e-61.0589e-65.2610e-71.3080e-58.8899e-67.2386e-74.7117e-852.2157
BVT ITHNN8.3893e-63.9254e-63.3339e-61.9653e-69.6838e-72.7517e-51.5734e-51.5582e-61.2489e-752.2157
BVT ITHNE1.0848e-53.7187e-63.7242e-62.2014e-67.0296e-74.5439e-52.2881e-59.1635e-79.7371e-852.2157
TGL ITHNZ7.0671e-68.6438e-77.5526e-73.8725e-71.9982e-71.3245e-54.4707e-62.8463e-72.5334e-854.7209
TGL ITHNN6.7246e-61.2689e-61.2110e-65.2738e-72.8379e-71.5005e-56.8600e-64.0272e-73.8025e-854.7209
TGL ITHNE5.7759e-61.1887e-61.1543e-65.7726e-72.3861e-72.0296e-56.5391e-62.9256e-73.3974e-854.7209
GRAM GUHHZ2.8510e-67.4618e-77.0172e-73.7599e-71.4609e-77.1884e-64.9245e-61.6886e-72.2391e-869.3138
GRAM GUHHN5.5596e-61.9918e-62.0763e-69.4834e-75.4145e-71.3541e-51.6250e-57.1430e-76.2097e-869.3138
GRAM GUHHE8.9235e-62.0362e-62.5080e-68.8241e-73.5030e-72.1758e-51.7373e-55.0520e-77.0545e-869.3138
RNCA GUHHZ2.1913e-64.0943e-73.3054e-71.7580e-78.0865e-89.2117e-61.3749e-61.1860e-71.3698e-869.5219
RNCA GUHHN2.7336e-67.3578e-75.0511e-72.1524e-79.3073e-88.8779e-62.3333e-61.1327e-72.2585e-869.5219
RNCA GUHHE3.6195e-69.3574e-76.2706e-72.4817e-71.1038e-71.2499e-53.5113e-61.5601e-72.0329e-869.5219
MSSA IVHHZ3.5283e-61.0637e-67.2474e-76.9843e-74.0820e-78.6559e-65.4966e-64.9152e-73.0928e-871.6179
MSSA IVHHN5.9091e-61.7438e-61.4589e-67.6894e-74.0821e-71.1402e-59.0772e-65.2093e-75.7766e-871.6179
MSSA IVHHE4.5653e-61.2611e-61.1823e-67.4463e-73.6514e-71.2460e-57.2263e-63.8634e-73.6197e-871.6179
PCP GUHHZ1.8546e-63.1558e-72.6528e-71.8883e-75.2655e-86.1642e-61.5637e-66.9015e-81.0738e-888.6239
PCP GUHHN1.7208e-63.4334e-72.7969e-71.5345e-75.6133e-83.8623e-61.5829e-66.4163e-87.9089e-988.6239
PCP GUHHE1.4771e-63.8989e-73.4211e-72.3177e-79.4750e-86.3015e-62.3939e-61.0466e-71.2427e-888.6239
MDI IVHHZ7.5860e-61.3847e-61.1319e-63.7876e-71.6730e-71.7324e-55.7049e-62.4920e-74.1176e-893.811
MDI IVHHN9.3747e-61.9181e-61.6080e-65.1767e-72.5422e-72.8129e-58.6283e-63.7180e-74.8038e-893.811
MDI IVHHE1.6372e-53.5611e-62.3654e-67.2086e-73.4190e-75.2973e-59.7122e-65.3846e-78.9752e-893.811
PLMA IVHHZ1.7767e-65.2727e-74.8476e-73.1774e-71.0702e-76.3152e-62.2782e-61.2989e-71.7235e-8104.7164
PLMA IVHHN3.7150e-61.2086e-68.2100e-74.6613e-71.8282e-78.5578e-65.5245e-62.2723e-73.2150e-8104.7164
PLMA IVHHE3.3539e-68.2552e-77.7418e-73.9793e-71.5608e-76.9575e-64.2255e-61.9338e-72.2682e-8104.7164
MUGIOCHHHZ4.5824e-69.2553e-78.6100e-72.8963e-71.1098e-71.1429e-54.9761e-61.7880e-72.5195e-8114.5342
MUGIOCHHHN4.4484e-67.8643e-76.5292e-72.5066e-71.0750e-78.9721e-64.9168e-61.3028e-71.8982e-8114.5342
MUGIOCHHHE3.7680e-69.9569e-76.5081e-72.5470e-71.1226e-71.0983e-52.4041e-61.7331e-72.8077e-8114.5342
VARE IVHHZ2.9161e-64.7783e-74.3475e-71.4010e-76.5894e-89.0872e-61.9627e-69.8589e-81.5268e-8117.5331
VARE IVHHN3.8561e-66.8183e-75.9660e-73.0458e-71.3291e-71.0375e-52.6538e-61.7182e-72.2984e-8117.5331
VARE IVHHE3.6375e-69.6314e-77.1513e-73.0362e-71.1177e-77.3367e-64.2551e-61.4886e-72.3919e-8117.5331
*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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