MANUAL Location - Area: Lunigiana , magnitude (ML): 0.3
2021-07-17 03:08:17 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-07-19 10:00:23

RSNI Logo

Earthquake info - Manual location
Event - ID :210717030657
Magnitude (ML) :0.3 +/- 0.2
Origin Time :2021-07-17 03:08:17.283 (UTC)
Location : Latitude: 44.215 N, Longitude: 10.055 E
Area :Lunigiana
Depth (km) :4.16
Distances (km) : 5.9 --- Licciana Nardi
6.2 --- Fivizzano
6.9 --- Aulla
9.0 --- Podenzana
9.2 --- Fosdinovo
9.3 --- Tresana
9.7 --- Casola in Lunigiana
10.4 --- Comano
12.0 --- Villafranca in Lunigiana
12.3 --- Bagnone
12.6 --- Santo Stefano di Magra
13.0 --- Castelnuovo Magra
13.0 --- Bolano
13.1 --- Minucciano
13.7 --- Sarzana
13.8 --- Ortonovo
15.3 --- Giuncugnano
15.8 --- Vezzano Ligure
15.8 --- Arcola
16.1 --- Filattiera

Quality location estimate: Erh: 0.7 km, Erz: 0.4 km, Nf: 20, Gap: 77 °, Rms: 0.16


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.
FIVIGU2021-07-17 03:08:19.1230.0200-0.021.962021-07-17 03:08:20.4080.0400-0.011.947.8
EQUIGU2021-07-17 03:08:19.7500.00900.002.072021-07-17 03:08:21.5100.03300.051.7410.5
PLMAGU2021-07-17 03:08:22.1400.0160-0.022.022021-07-17 03:08:25.4500.0752-0.240.7424.8
SARMGU2021-07-17 03:08:22.7210.0200-0.260.552021-07-17 03:08:26.8130.0842-0.320.5928.2
GRAMGU2021-07-17 03:08:23.0600.01900.021.942021-07-17 03:08:27.2700.09420.430.1331.1
CARDGU2021-07-17 03:08:24.6930.0200-0.021.802021-07-17 03:08:29.8900.1384-0.270.8040.3
MSSAIV2021-07-17 03:08:24.5780.0200-1.010.182021-07-17 03:08:30.5000.1354-1.200.1344.6
BDIIV2021-07-17 03:08:25.4110.0200-0.530.172021-07-17 03:08:32.2600.1404-0.051.1446.7
MAIMGU2021-07-17 03:08:26.2640.02000.051.542021-07-17 03:08:31.9940.0400-0.860.1748.6
PIIIV2021-07-17 03:08:29.6780.02000.280.342021-07-17 03:08:36.6300.4198-1.820.0466.6


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
FIVI GUHN0.494.34e-17.865
PLMA GUHH0.112.25e-224.8221
SARM GUEH0.192.58e-228.297
GRAM GUHH0.588.10e-231.12
CARD GUHH0.482.14e-240.3122
BDI IVHH0.108.37e-346.7111
MAIM GUHH0.278.11e-348.6134
PII IVHH0.477.42e-366.6145


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.
(°)
FIVI GUHNZ5.2750e-54.5956e-61.9916e-67.5409e-74.2261e-75.4269e-58.1461e-65.7666e-78.6810e-87.865
FIVI GUHNN3.1095e-56.1582e-63.8899e-61.1576e-66.0161e-75.2488e-51.6930e-59.1917e-71.3502e-77.865
FIVI GUHNE2.6864e-53.8743e-62.9930e-61.0701e-65.7112e-77.4178e-51.4549e-57.8486e-71.0564e-77.865
EQUI GUHHZ6.3364e-69.5115e-74.2309e-71.4061e-75.7366e-81.0268e-51.8859e-69.0159e-81.8737e-810.5125
EQUI GUHHN7.8396e-68.7716e-72.1648e-78.1208e-84.8314e-81.1417e-58.2297e-79.0131e-81.9712e-810.5125
EQUI GUHHE1.4545e-51.8718e-64.9196e-71.5111e-78.7566e-82.7524e-52.7384e-61.4404e-73.3986e-810.5125
PLMA GUHHZ2.9088e-63.3012e-71.1535e-75.4990e-83.9557e-85.0883e-64.7632e-76.8758e-86.8616e-924.8221
PLMA GUHHN4.2085e-65.6261e-72.3637e-76.8701e-85.6677e-81.0593e-57.6835e-71.1251e-71.0850e-824.8221
PLMA GUHHE3.0825e-63.4572e-71.9254e-77.2458e-85.1840e-88.8472e-61.0952e-67.6644e-89.2833e-924.8221
SARM GUEHZ1.2533e-62.3875e-71.5456e-75.2797e-82.4712e-84.5503e-61.2577e-63.5537e-85.7110e-928.297
SARM GUEHN1.8476e-62.8238e-71.9050e-79.1253e-83.9633e-86.0729e-68.3269e-75.7419e-88.2122e-928.297
SARM GUEHE1.2025e-62.3619e-71.8544e-79.0962e-84.4403e-84.3864e-61.3687e-67.0182e-87.3327e-928.297
GRAM GUHHZ3.5543e-65.0466e-73.4018e-78.4442e-85.3124e-86.1617e-62.1457e-69.8032e-81.3362e-831.12
GRAM GUHHN5.3802e-68.8421e-76.2185e-71.1926e-76.3408e-81.0511e-53.1002e-69.7787e-81.9325e-831.12
GRAM GUHHE4.5469e-69.2548e-77.9704e-72.1446e-79.9134e-89.7516e-65.4178e-61.5376e-72.3065e-831.12
CARD GUHHZ2.5604e-62.7541e-78.4093e-83.0432e-81.6837e-84.8787e-63.4236e-72.6183e-85.2704e-940.3122
CARD GUHHN4.9011e-64.5148e-72.0547e-75.1297e-82.5317e-87.8801e-66.2204e-73.7959e-89.8873e-940.3122
CARD GUHHE4.2956e-65.3126e-71.9224e-74.8859e-82.6654e-87.8602e-65.6062e-74.3298e-81.0547e-840.3122
MSSA IVHHZ9.0212e-68.5440e-71.4303e-78.3473e-85.2098e-81.0634e-56.5250e-78.3038e-81.7037e-844.6285
MSSA IVHHN9.6575e-61.1101e-63.5056e-78.7381e-85.4222e-83.0503e-58.6286e-71.1090e-72.3616e-844.6285
MSSA IVHHE1.0243e-51.4662e-65.4776e-71.3119e-71.1250e-75.0750e-51.3243e-62.3147e-73.4113e-844.6285
BDI IVHHZ1.1974e-61.2722e-75.1709e-81.7550e-81.2254e-82.0130e-62.9168e-71.9530e-82.4122e-946.7111
BDI IVHHN1.4452e-61.8878e-78.8839e-83.1033e-82.0736e-83.0986e-63.9686e-72.3788e-83.8394e-946.7111
BDI IVHHE1.3959e-61.7057e-78.2362e-82.7607e-81.8320e-83.6000e-63.5940e-72.7199e-84.4571e-946.7111
MAIM GUHHZ7.4786e-71.1319e-78.7025e-84.4765e-82.4250e-82.1506e-65.8264e-73.1168e-83.1307e-948.6134
MAIM GUHHN1.0224e-61.7777e-77.7799e-83.7492e-81.7316e-81.8311e-64.0786e-72.8410e-83.4842e-948.6134
MAIM GUHHE6.7438e-77.5457e-85.1568e-82.4417e-81.3226e-81.5269e-62.8405e-71.8358e-81.9303e-948.6134
PII IVHHZ3.4433e-77.0408e-84.7930e-81.4837e-88.8749e-98.6342e-71.7838e-71.7399e-81.8413e-966.6145
PII IVHHN4.7522e-78.0607e-85.6238e-81.7156e-87.5650e-91.4662e-62.4126e-79.3894e-91.6876e-966.6145
PII IVHHE6.0331e-71.0272e-76.7833e-83.4191e-82.1492e-82.1556e-62.5860e-73.2369e-83.4930e-966.6145
*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