MANUAL Location - Area: Alpi Apuane , magnitude (ML): 0.5
2021-07-10 20:18:30 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-07-12 10:36:47

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Earthquake info - Manual location
Event - ID :210710201729
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2021-07-10 20:18:30.617 (UTC)
Location : Latitude: 44.150 N, Longitude: 10.144 E
Area :Alpi Apuane
Depth (km) :0.99
Distances (km) : 5.7 --- Minucciano
6.4 --- Casola in Lunigiana
10.0 --- Fosdinovo
10.1 --- Fivizzano
10.2 --- Ortonovo
10.7 --- Giuncugnano
11.5 --- Castelnuovo Magra
11.8 --- Vagli Sotto
12.5 --- Carrara
12.9 --- Piazza al Serchio
13.8 --- Massa
14.7 --- Careggine
14.7 --- Montignoso
15.1 --- Sillano
15.2 --- Sarzana
15.3 --- Camporgiano
15.5 --- Licciana Nardi
15.7 --- Aulla
15.9 --- Comano
16.4 --- San Romano in Garfagnana

Quality location estimate: Erh: 1 km, Erz: 0.6 km, Nf: 22, Gap: 97 °, Rms: 0.26


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.
EQUIGU2021-07-10 20:18:31.9200.00100.341.332021-07-10 20:18:32.2440.0400-0.021.272.4
FIVIGU2021-07-10 20:18:32.9860.0200-0.001.312021-07-10 20:18:34.1100.0400-0.530.1510.2
SARMGU2021-07-10 20:18:35.2500.01000.151.152021-07-10 20:18:38.3800.06410.061.3620.9
PLMAGU2021-07-10 20:18:36.4400.02000.391.242021-07-10 20:18:39.8800.0802-0.021.2325.7
CARDGU2021-07-10 20:18:37.0600.08030.470.842021-07-10 20:18:40.9200.10530.031.2930.3
BDIIV2021-07-10 20:18:38.3300.04720.381.252021-07-10 20:18:43.3060.31870.051.0237.5
MAIMGU2021-07-10 20:18:38.0210.0200-0.190.522021-07-10 20:18:43.9500.12130.191.3438.3
GRAMGU2021-07-10 20:18:38.0800.01900.221.242021-07-10 20:18:43.0220.04000.431.0038.5
POPMGU2021-07-10 20:18:40.3900.02510.311.332021-07-10 20:18:47.2640.21560.231.1550.3
MSSAIV2021-07-10 20:18:40.4000.1376-0.320.452021-07-10 20:18:47.2100.0400-0.790.1453.3
PIIIV2021-07-10 20:18:41.5040.02000.021.322021-07-10 20:18:48.5450.0400-1.010.0856.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
EQUI GUHH0.463.17e+02.422
FIVI GUHN0.927.42e-110.2352
SARM GUEH0.551.04e-120.979
PLMA GUHH0.789.80e-225.7245
CARD GUHH0.594.70e-230.3117
BDI IVHH0.231.73e-237.5105
MAIM GUHH0.371.61e-238.3133
POPM GUHH0.492.82e-250.3103
PII IVHH0.561.29e-256.5147


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.
(°)
EQUI GUHHZ1.7041e-42.4724e-58.2887e-62.8155e-61.7953e-62.5791e-42.9852e-52.7193e-63.8037e-72.422
EQUI GUHHN1.6096e-41.7966e-54.7927e-62.4138e-61.2343e-62.3237e-41.9131e-51.6171e-62.5003e-72.422
EQUI GUHHE5.1367e-47.6069e-51.4880e-54.6356e-63.1924e-65.8815e-45.6139e-55.1663e-69.0352e-72.422
FIVI GUHNZ1.1250e-41.0513e-56.6102e-61.9639e-61.0214e-62.0575e-42.2168e-51.4031e-62.6020e-710.2352
FIVI GUHNN6.1113e-51.0528e-55.9404e-61.6487e-69.6030e-71.3599e-42.3650e-51.3298e-62.6854e-710.2352
FIVI GUHNE4.1254e-59.6083e-65.1492e-63.0502e-61.3875e-69.3747e-52.7343e-51.7178e-62.3666e-710.2352
SARM GUEHZ3.9353e-66.0306e-72.9214e-79.2120e-84.4147e-81.1999e-51.2610e-66.5058e-81.4337e-820.979
SARM GUEHN5.3711e-61.4179e-67.3451e-73.4367e-71.3671e-71.6490e-53.0263e-61.9179e-73.0649e-820.979
SARM GUEHE3.1005e-66.7524e-73.1034e-71.6168e-77.5172e-85.9439e-61.5967e-61.0293e-71.3928e-820.979
PLMA GUHHZ3.9871e-63.9689e-72.5404e-78.7333e-85.0602e-85.5391e-61.0231e-68.0372e-89.5433e-925.7245
PLMA GUHHN6.6999e-61.1849e-66.6326e-73.4205e-71.5581e-72.2242e-54.4290e-62.2905e-73.4567e-825.7245
PLMA GUHHE6.1604e-68.5903e-74.6327e-72.0806e-79.8594e-81.6009e-53.5420e-61.3561e-71.7703e-825.7245
CARD GUHHZ3.4099e-63.8797e-71.6525e-75.3078e-82.5994e-89.3515e-68.0897e-74.3051e-88.6235e-930.3117
CARD GUHHN6.6487e-69.0455e-74.1948e-71.1845e-76.4278e-81.4015e-51.9107e-61.0544e-71.7843e-830.3117
CARD GUHHE7.3822e-69.6416e-74.4078e-71.0589e-75.4560e-82.3197e-51.4624e-69.4875e-82.0233e-830.3117
BDI IVHHZ1.7643e-62.7075e-71.0144e-73.8015e-82.1165e-84.2278e-64.8064e-72.9449e-86.5614e-937.5105
BDI IVHHN2.2982e-63.1288e-71.5554e-76.5630e-82.9070e-85.6394e-67.4682e-73.6634e-86.7257e-937.5105
BDI IVHHE2.2620e-63.1758e-71.5375e-76.1151e-82.5204e-86.3792e-67.7000e-73.4566e-87.3058e-937.5105
MAIM GUHHZ1.5081e-62.3121e-71.7928e-77.1014e-83.0396e-84.0722e-61.0097e-63.8003e-86.2098e-938.3133
MAIM GUHHN1.6062e-62.7498e-71.5361e-77.1973e-83.2564e-85.9566e-67.5793e-74.5095e-86.6431e-938.3133
MAIM GUHHE1.0876e-61.7289e-71.0669e-74.1724e-81.7193e-82.8936e-64.5313e-72.5326e-83.6624e-938.3133
GRAM GUHHZ6.0433e-61.2476e-69.4206e-72.2841e-71.3133e-71.2278e-54.0997e-62.0081e-73.0737e-838.5351
GRAM GUHHN1.0461e-52.4252e-62.1090e-65.4301e-72.5745e-72.8069e-51.1425e-54.0597e-76.8608e-838.5351
GRAM GUHHE7.5916e-62.1610e-61.8708e-65.0652e-72.8022e-71.7305e-51.1834e-54.0575e-75.6976e-838.5351
POPM GUHHZ1.3759e-62.0676e-71.3125e-74.3599e-82.3421e-84.6184e-66.3201e-74.1177e-85.2200e-950.3103
POPM GUHHN2.0511e-63.6285e-72.7642e-78.1537e-83.4179e-86.5391e-69.6240e-74.8094e-87.9207e-950.3103
POPM GUHHE1.9719e-63.8308e-72.4140e-77.1863e-83.3968e-85.6161e-61.0783e-65.8547e-81.0279e-850.3103
MSSA IVHHZ4.7552e-64.5091e-78.3651e-83.2284e-82.0993e-84.4807e-63.0548e-74.2450e-88.4401e-953.3291
MSSA IVHHN6.1194e-68.0128e-72.5015e-76.5896e-83.7223e-82.5075e-56.7121e-77.3500e-81.7293e-853.3291
MSSA IVHHE7.5271e-61.1507e-63.7038e-78.6448e-86.0232e-83.8736e-59.7829e-71.1377e-72.3943e-853.3291
PII IVHHZ7.7311e-71.1775e-78.7253e-82.5668e-81.2557e-82.0894e-64.4115e-71.6908e-82.4463e-956.5147
PII IVHHN8.0396e-71.6951e-71.0392e-73.6517e-81.7765e-82.2074e-67.6228e-72.9207e-85.0465e-956.5147
PII IVHHE8.2769e-71.5956e-71.0486e-73.4805e-81.6490e-83.7237e-65.5781e-72.8967e-84.1135e-956.5147
*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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