MANUAL Location - Area: Costa toscana settentrionale , magnitude (ML): 1.4
2023-03-26 02:46:03 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2023-03-27 07:48:10

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Earthquake info - Manual location
Event - ID :230326024538
Magnitude (ML) :1.4 +/- 0.2
Origin Time :2023-03-26 02:46:03.566 (UTC)
Location : Latitude: 43.928 N, Longitude: 9.967 E
Area :Costa toscana settentrionale
Depth (km) :3.32
Distances (km) : 15.5 --- Ameglia
15.8 --- Carrara
16.6 --- Massa
17.0 --- Forte dei Marmi
17.1 --- Lerici
17.7 --- Portovenere
19.1 --- Ortonovo
19.6 --- Montignoso
19.6 --- Castelnuovo Magra
20.5 --- Sarzana
21.5 --- Arcola
21.6 --- Pietrasanta
22.2 --- Seravezza
23.0 --- La Spezia
23.5 --- Viareggio
23.6 --- Fosdinovo
24.7 --- Vezzano Ligure
26.2 --- Santo Stefano di Magra
26.5 --- Riomaggiore
27.1 --- Camaiore

Quality location estimate: Erh: 2.6 km, Erz: 2 km, Nf: 36, Gap: 184 °, Rms: 0.28


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.
PLMAGU2023-03-26 02:46:07.3100.01200.022.172023-03-26 02:46:09.9800.0501-0.051.9616.6
EQUIGU2023-03-26 02:46:09.6800.0200-0.012.142023-03-26 02:46:14.0900.0932-0.071.7330.5
FIVIGU2023-03-26 02:46:10.9780.02000.131.682023-03-26 02:46:16.3700.04000.221.2437.1
MAIMGU2023-03-26 02:46:11.4500.0231-0.400.612023-03-26 02:46:16.6800.1283-1.320.1642.2
CARDGU2023-03-26 02:46:11.4000.0241-0.101.702023-03-26 02:46:16.9320.1002-0.430.6842.8
SARMGU2023-03-26 02:46:12.1600.02710.121.752023-03-26 02:46:18.5200.14140.181.3645.1
PIIIV2023-03-26 02:46:12.2500.0251-1.210.152023-03-26 02:46:18.4310.0400-2.310.0150.4
BDIIV2023-03-26 02:46:13.2500.0291-0.051.902023-03-26 02:46:19.8820.0400-0.660.3452.7
MSSAIV2023-03-26 02:46:14.0810.0200-0.041.922023-03-26 02:46:21.5000.1002-0.420.7556.3
GRAMGU2023-03-26 02:46:15.5860.02000.630.302023-03-26 02:46:24.0520.04001.080.3163.2
POPMGU2023-03-26 02:46:15.3800.03510.211.262023-03-26 02:46:23.7100.1965-0.151.2964.6
GSCLGU2023-03-26 02:46:16.5000.03910.191.362023-03-26 02:46:25.5200.2076-0.221.1668.4
TBG02GU2023-03-26 02:46:19.1620.02000.051.762023-03-26 02:46:30.6330.04000.480.6886.6
LSG06LK2023-03-26 02:46:20.7210.02000.850.342023-03-26 02:46:32.9340.13031.620.1790.8
GORRGU2023-03-26 02:46:20.1200.04920.031.712023-03-26 02:46:32.1960.0400-0.440.8092.7
RNCAGU2023-03-26 02:46:22.4640.02001.410.232023-03-26 02:46:34.7300.04001.450.23101.0
RUFIIV2023-03-26 02:46:25.4800.0733-0.201.262023-03-26 02:46:40.5100.0400-1.470.13124.0
PCPGU2023-03-26 02:46:26.5120.02000.850.362023-03-26 02:46:42.2170.04001.040.37132.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PLMA GUHH1.054.08e-116.6326
FIVI GUHN1.563.00e-137.120
MAIM GUHH1.209.09e-242.292
CARD GUHH1.562.25e-142.875
PII IVHH1.156.30e-250.4117
BDI IVHH1.187.83e-252.773
GRAM GUHH1.471.50e-163.27
POPM GUHH1.541.90e-164.678
GSCL GUHH1.466.86e-268.446
TBG02GUEH1.676.62e-286.6311
GORR GUHH1.766.88e-292.7325
RNCA GUHH1.613.93e-2101.0307
PCP GUHH1.106.95e-3132.2302


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.
(°)
PLMA GUHHZ3.4987e-54.7762e-61.9290e-66.5613e-72.9497e-76.1963e-59.0858e-65.6424e-71.1193e-716.6326
PLMA GUHHN3.8748e-56.0962e-63.3696e-69.4030e-75.0034e-71.1632e-41.0583e-57.1227e-71.3672e-716.6326
PLMA GUHHE6.8097e-58.3239e-63.7308e-66.8832e-74.6788e-71.6756e-41.2305e-58.8842e-71.9815e-716.6326
EQUI GUHHZ1.2815e-51.5753e-65.8956e-72.0495e-71.1190e-72.5046e-52.2435e-61.9811e-73.6761e-830.529
EQUI GUHHN1.0719e-51.3510e-66.6720e-73.1499e-71.1094e-71.9870e-52.1352e-61.5121e-72.9881e-830.529
EQUI GUHHE1.3349e-52.2760e-68.0218e-72.7478e-71.4454e-74.0429e-53.2862e-62.2776e-75.1153e-830.529
FIVI GUHNZ1.4897e-52.9623e-61.6469e-63.5741e-72.4322e-74.6194e-54.8311e-64.2149e-77.1128e-837.120
FIVI GUHNN2.4123e-54.3766e-62.7913e-67.2027e-74.1555e-74.0934e-51.1632e-56.5531e-71.1260e-737.120
FIVI GUHNE1.5846e-53.1376e-61.6892e-65.9047e-72.6430e-75.4940e-56.2429e-63.4140e-77.0567e-837.120
MAIM GUHHZ5.4457e-67.9501e-75.2450e-71.6250e-78.1264e-81.8689e-52.2063e-61.1380e-71.7820e-842.292
MAIM GUHHN8.9686e-61.2053e-67.5179e-72.8526e-71.1723e-72.1730e-54.3016e-61.5169e-72.7066e-842.292
MAIM GUHHE8.6468e-61.4676e-68.9999e-72.4856e-71.5195e-72.8860e-53.5129e-62.2295e-73.4198e-842.292
CARD GUHHZ1.1255e-51.3052e-64.8257e-71.5472e-78.2423e-82.4342e-52.2255e-61.4700e-72.8367e-842.875
CARD GUHHN2.6102e-54.2875e-62.2086e-64.2507e-72.7333e-76.7502e-56.3552e-64.4894e-79.6052e-842.875
CARD GUHHE2.3772e-53.9201e-61.8425e-63.5685e-72.0888e-79.2957e-56.8532e-63.9343e-78.7272e-842.875
SARM GUEHZ4.0831e-64.5396e-72.7571e-78.3904e-83.7030e-87.9014e-61.2656e-65.8726e-81.0170e-845.151
SARM GUEHN4.2693e-67.1994e-74.1094e-72.3911e-79.9071e-81.8724e-51.6704e-61.4492e-71.6244e-845.151
SARM GUEHE3.7426e-66.6362e-73.7769e-72.2397e-71.3678e-71.1399e-51.6663e-61.7194e-72.7819e-845.151
PII IVHHZ5.1085e-68.1548e-75.1744e-71.4950e-78.2339e-81.2417e-52.5425e-61.1361e-71.9051e-850.4117
PII IVHHN5.4732e-61.0045e-66.6044e-72.4579e-79.4330e-81.4273e-52.5402e-61.2114e-72.1820e-850.4117
PII IVHHE7.2756e-61.1827e-65.5031e-71.4601e-76.3534e-81.7686e-53.0153e-61.0759e-72.4396e-850.4117
BDI IVHHZ4.7392e-67.7652e-74.1180e-71.1006e-75.2635e-81.0629e-52.0290e-69.2766e-81.6864e-852.773
BDI IVHHN5.4158e-69.8081e-76.3420e-71.6589e-77.2332e-82.3301e-52.5717e-61.0462e-72.2654e-852.773
BDI IVHHE5.3292e-69.5808e-76.7199e-72.4105e-71.0323e-71.8842e-53.8059e-61.3048e-72.3406e-852.773
MSSA IVHHZ1.5702e-51.5780e-64.7082e-71.3589e-77.4792e-82.6044e-52.0285e-61.5491e-73.3469e-856.3320
MSSA IVHHN3.4919e-55.4951e-62.0031e-64.2377e-72.6047e-71.7844e-45.6258e-64.8486e-71.1476e-756.3320
MSSA IVHHE4.4583e-56.9237e-62.3631e-65.2827e-72.9594e-71.9679e-46.5186e-66.1479e-71.4187e-756.3320
GRAM GUHHZ4.5794e-67.1513e-75.0398e-71.7434e-78.6694e-89.2243e-62.4543e-61.0363e-71.9351e-863.27
GRAM GUHHN4.9763e-61.0747e-61.0789e-63.9273e-71.7029e-71.4316e-54.8591e-62.0653e-72.9732e-863.27
GRAM GUHHE5.5379e-61.2889e-61.4733e-65.6018e-72.2549e-71.9832e-59.6364e-63.2273e-73.8075e-863.27
POPM GUHHZ9.3524e-61.6198e-61.1121e-62.9624e-71.5413e-73.4065e-55.4701e-62.3730e-73.5819e-864.678
POPM GUHHN8.0706e-61.8391e-61.4016e-63.6039e-71.8004e-72.4910e-56.8439e-62.5584e-74.4553e-864.678
POPM GUHHE8.5698e-62.2645e-62.0215e-65.3832e-72.3860e-72.1742e-59.9441e-63.5528e-75.7107e-864.678
GSCL GUHHZ1.5902e-62.4435e-72.1532e-79.7887e-84.3573e-84.2814e-61.2461e-66.1560e-87.2497e-968.446
GSCL GUHHN2.1590e-66.0668e-76.1778e-72.6453e-71.2119e-74.9923e-63.4470e-61.4913e-72.0165e-868.446
GSCL GUHHE2.7481e-67.3395e-75.9966e-71.6382e-77.8212e-85.7861e-62.9786e-61.1466e-72.0431e-868.446
TBG02GUEHZ1.6411e-62.9712e-72.4223e-71.5251e-79.0081e-85.1156e-61.2641e-69.6046e-81.0146e-886.6311
TBG02GUEHN4.1626e-68.5793e-74.7968e-71.8006e-71.0814e-71.4607e-52.2871e-61.7549e-72.4420e-886.6311
TBG02GUEHE3.6573e-69.5129e-76.2841e-71.9840e-71.1990e-71.5243e-54.3945e-61.4021e-72.1499e-886.6311
LSG06LKEHZ3.5654e-67.2375e-74.4419e-72.8303e-73.0498e-79.6964e-61.5781e-65.6277e-72.2972e-890.8312
LSG06LKEHN3.7393e-57.5901e-63.4868e-65.9333e-66.2402e-63.3284e-51.4420e-59.8799e-63.8409e-790.8312
LSG06LKEHE5.5556e-61.2093e-68.6879e-74.2640e-74.9368e-71.7140e-53.0728e-61.0655e-64.3165e-890.8312
GORR GUHHZ1.8061e-64.6630e-73.3824e-71.3687e-75.6333e-84.6158e-62.2376e-66.8239e-81.1173e-892.7325
GORR GUHHN2.0717e-65.6839e-74.7901e-71.9078e-77.3402e-86.7565e-63.0513e-61.0180e-71.7755e-892.7325
GORR GUHHE2.3916e-66.1387e-75.3913e-72.8109e-71.0328e-78.7281e-63.3523e-61.3847e-71.9397e-892.7325
RNCA GUHHZ1.6170e-62.8411e-71.9034e-77.3514e-84.8153e-84.5625e-61.0335e-67.3577e-87.8242e-9101.0307
RNCA GUHHN1.4987e-63.8518e-72.6417e-71.2085e-76.0299e-85.1403e-69.9350e-79.7813e-89.2262e-9101.0307
RNCA GUHHE2.4014e-65.3521e-73.6491e-71.1026e-77.0300e-87.5442e-61.3963e-61.1254e-71.5134e-8101.0307
PCP GUHHZ2.9264e-78.8806e-86.1354e-85.3349e-86.5415e-87.8832e-72.0696e-71.1783e-71.4679e-8132.2302
PCP GUHHN2.5870e-76.9618e-85.3834e-83.0842e-81.5885e-87.6171e-72.9177e-72.2451e-81.7108e-9132.2302
PCP GUHHE3.6544e-76.3770e-83.8426e-81.7206e-81.6843e-87.3677e-71.8353e-72.6431e-82.1286e-9132.2302
*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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