AUTOMATIC Location - Area: Versilia , magnitude (ML): 0.9
2025-05-09 16:24:58 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-05-09 16:28:46

RSNI Logo


Earthquake info - RsniPicker2 automatic location
Event - ID :250509162403
Magnitude (ML) :0.9 +/- 0.3
Origin Time :2025-05-09 16:24:58.2 (UTC)
Location : Latitude: 43.926 N, Longitude: 10.207 E
Area :Versilia
Depth (km) :6.02
Distances (km) : 4.1 --- Pietrasanta (LU)
5.1 --- Forte dei Marmi (LU)
7.0 --- Viareggio (LU)
7.9 --- Seravezza (LU)
8.0 --- Camaiore (LU)
10.6 --- Montignoso (MS)
10.7 --- Stazzema (LU)
12.0 --- Massarosa (LU)
12.9 --- Massa (MS)
17.1 --- Pescaglia (LU)
18.0 --- Carrara (MS)
19.5 --- Fabbriche di Vallico (LU)
20.0 --- Vergemoli (LU)
21.6 --- Vecchiano (PI)
21.9 --- Vagli Sotto (LU)
22.4 --- Ortonovo (SP)
23.6 --- Molazzana (LU)
23.7 --- Careggine (LU)
23.7 --- Gallicano (LU)
24.6 --- Castelnuovo Magra (SP)

Quality location estimate:
Erh: 1.3 km, Erz: 2.1 km, Nf: 21, Gap: 164°, Rms: 0.292 s
Stazioni validate: 12


RsniPicker2 - Automatic location results
Station Net P arrival times P pick
err
P pick
weight
P res Nll
weight
S arrival time S pick
err
S pick
weight
S res Nll
weight
Dist.
MAIMGU2025-05-09 16:25:03.0500.01300.001.692025-05-09 16:25:05.9700.0711-0.700.5823.6
CARDGU2025-05-09 16:25:03.0800.01400.161.122025-05-09 16:25:06.4500.07610.041.6825.4
EQUIGU--:---.-----.---.--2025-05-09 16:25:06.0800.0831-0.970.4627.6
VLCMN2025-05-09 16:25:03.7400.01700.041.632025-05-09 16:25:07.6000.0911-0.181.2530.2
PLMAIV2025-05-09 16:25:03.5200.0490-0.660.522025-05-09 16:25:06.9200.1862-1.660.0532.0
SARMGU2025-05-09 16:25:04.2000.0180-0.161.302025-05-09 16:25:07.9580.1552-0.990.4733.1
PIIIV2025-05-09 16:25:04.8100.0611-0.161.332025-05-09 16:25:09.5940.3452-0.440.8634.7
BDIIV2025-05-09 16:25:04.6800.0190-0.081.652025-05-09 16:25:09.3800.1062-0.270.9335.2
POPMGU2025-05-09 16:25:06.7300.02500.210.972025-05-09 16:25:12.9900.13920.201.0646.4
GSCLGU--:---.-----.---.--2025-05-09 16:25:15.6300.1692-0.860.5656.4
ERBMIV--:---.-----.---.--2025-05-09 16:25:15.9890.2332-1.110.3957.5
GRAMGU2025-05-09 16:25:09.3800.03300.081.582025-05-09 16:25:17.3230.28720.200.9264.1


RsniPicker2 - Automatic magnitude (ML) calculation results
Station Net Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth Used
MAIM GU1.001.82e-123.694SI
CARD GU1.303.27e-125.463SI
EQUI GU0.707.74e-227.6351SI
PLMA IV0.604.57e-232.0296SI
SARM GU0.901.00e-133.129SI
PII IV0.302.08e-234.7132SI
BDI IV0.705.49e-235.264SI
POPM GU0.907.63e-246.473SI
GSCL GU1.206.07e-256.433SI
ERBM IV1.104.35e-257.517SI
GRAM GU1.004.92e-264.1350SI


Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation
Station Net Channel PGA
(g)
PGV
(m/s)
PGD
(m)
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 GUHHZ7.1549e-61.3048e-60.0000e+07.3488e-71.4860e-62.1696e-61.9048e-52.5406e-61.7338e-72.7372e-823.694
MAIM GUHHN8.3664e-61.7004e-60.0000e+09.7023e-71.8242e-61.8242e-61.5909e-53.2653e-61.8358e-73.8853e-823.694
MAIM GUHHE1.0607e-52.3362e-60.0000e+01.6795e-63.1176e-64.3508e-61.9168e-55.7615e-64.6552e-76.9255e-823.694
CARD GUHHZ3.1687e-52.9688e-60.0000e+01.3716e-62.6679e-63.8701e-64.0159e-51.8453e-62.6330e-75.0454e-825.463
CARD GUHHN6.2844e-57.0230e-60.0000e+02.9269e-65.4383e-65.4383e-61.3798e-46.1775e-64.8382e-71.0828e-725.463
CARD GUHHE7.0633e-57.1592e-60.0000e+03.1162e-65.3479e-67.5500e-61.0700e-44.4971e-64.2206e-71.0364e-725.463
EQUI GUHHZ1.3275e-51.0107e-60.0000e+05.0516e-79.5151e-71.3719e-61.0876e-51.3238e-61.2432e-72.1067e-827.6351
EQUI GUHHN1.8915e-51.3849e-60.0000e+04.4026e-78.9885e-78.9885e-71.0592e-51.2010e-61.5981e-71.7548e-827.6351
EQUI GUHHE1.6402e-51.7629e-60.0000e+06.9064e-71.2970e-61.9121e-62.6635e-51.7609e-61.9714e-73.4579e-827.6351
VLC MNHHZ7.1722e-67.9239e-70.0000e+03.5019e-76.2950e-78.9789e-78.1368e-61.1759e-69.8733e-81.6349e-830.2-1
VLC MNHHN1.1029e-51.5495e-60.0000e+05.1596e-79.4861e-79.4861e-71.4998e-51.3201e-61.8046e-72.4311e-830.2-1
VLC MNHHE1.7465e-51.7516e-60.0000e+08.0971e-71.5287e-62.2302e-63.1915e-51.4256e-61.4127e-73.3483e-830.2-1
PLMA IVHHZ6.5747e-67.1432e-70.0000e+03.5268e-77.1250e-71.0493e-67.4884e-61.0570e-62.5667e-72.0521e-832.0296
PLMA IVHHN7.1941e-68.4230e-70.0000e+04.6877e-78.4046e-78.4046e-71.3782e-51.4469e-62.9563e-71.9538e-832.0296
PLMA IVHHE7.4091e-68.3997e-70.0000e+04.6153e-78.9124e-71.2967e-61.2283e-51.8145e-61.8643e-71.9879e-832.0296
SARM GUEHZ4.2977e-66.6385e-70.0000e+03.7574e-77.7539e-71.1054e-61.1747e-51.2180e-69.6983e-81.3713e-833.129
SARM GUEHN7.2290e-61.0030e-60.0000e+05.9344e-71.2647e-61.2647e-61.7503e-52.2809e-62.7454e-73.7531e-833.129
SARM GUEHE9.6767e-69.9174e-70.0000e+04.8544e-79.8801e-71.4591e-61.1430e-51.3583e-61.0063e-72.0459e-833.129
PII IVHHZ2.0287e-64.4532e-70.0000e+02.8935e-75.1747e-77.3412e-74.8927e-69.2108e-74.2581e-89.8952e-934.7132
PII IVHHN1.8609e-63.6131e-70.0000e+02.1869e-73.8240e-73.8240e-75.6753e-67.3923e-75.0478e-88.8158e-934.7132
PII IVHHE2.1500e-63.3215e-70.0000e+02.0240e-73.4577e-74.7439e-74.1502e-67.8667e-74.0258e-86.9744e-934.7132
BDI IVHHZ4.8876e-65.4455e-70.0000e+03.3667e-75.9615e-78.4052e-78.2801e-61.0937e-67.2003e-81.0724e-835.264
BDI IVHHN5.7019e-61.0008e-60.0000e+07.3251e-71.2285e-61.2285e-61.6620e-52.1883e-61.1515e-72.5311e-835.264
BDI IVHHE5.4857e-67.0380e-70.0000e+04.6845e-78.0648e-71.1226e-68.6699e-61.8435e-68.8546e-81.7804e-835.264
POPM GUHHZ6.8450e-68.4070e-70.0000e+04.9215e-78.7699e-71.2537e-61.2095e-51.5077e-69.6590e-81.8746e-846.473
POPM GUHHN1.1403e-51.3377e-60.0000e+09.6301e-71.5963e-61.5963e-61.3557e-52.0162e-61.3526e-72.8894e-846.473
POPM GUHHE7.3835e-61.3362e-60.0000e+07.7946e-71.2834e-61.7340e-61.5408e-52.9324e-61.0894e-72.2084e-846.473
GSCL GUHHZ1.2944e-62.0726e-70.0000e+01.3628e-72.3812e-73.3046e-72.4967e-65.5918e-79.5598e-85.2856e-956.433
GSCL GUHHN2.9216e-66.9429e-70.0000e+05.0188e-78.3320e-78.3320e-76.3314e-62.4307e-61.2449e-71.7631e-856.433
GSCL GUHHE1.8704e-64.1504e-70.0000e+03.1683e-75.2419e-77.1851e-73.4361e-61.3642e-67.7349e-81.3047e-856.433
GRAM GUHHZ1.9575e-62.9585e-70.0000e+02.8265e-74.5043e-76.1374e-73.1752e-68.3827e-77.6550e-87.1864e-964.1350
GRAM GUHHN2.9055e-66.3172e-70.0000e+06.2204e-79.5743e-79.5743e-78.3252e-62.1809e-69.7653e-81.4279e-864.1350
GRAM GUHHE2.0989e-64.7564e-70.0000e+04.0788e-76.4902e-78.7926e-75.9333e-62.0438e-62.0340e-71.3510e-864.1350
*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)

rsni