RSNI - Manually revised location

MANUAL Location - Area: Frignano , magnitude (M_L): 1.1
2025-07-06 13:38:31 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-07-07 09:42:27

Earthquake info - Manual location

Event - ID :	250706133801
Magnitude (M_L) :	1.1 +/- 0.2
Origin Time :	2025-07-06 13:38:31.009 (UTC)
Location :	Latitude: 44.407 N, Longitude: 10.650 E
Area :	Frignano
Depth (km) :	22.27
Distances (km) :	5.1 --- Prignano sulla Secchia 6.0 --- Montefiorino 7.8 --- Toano 8.9 --- Polinago 9.3 --- Palagano 11.0 --- Baiso 11.3 --- Serramazzoni 11.9 --- Carpineti 12.6 --- Lama Mocogno 13.3 --- Castellarano 13.7 --- Frassinoro 15.2 --- Villa Minozzo 15.7 --- Viano 16.6 --- Casina 16.6 --- Pavullo nel Frignano 18.3 --- Sassuolo 18.3 --- Montecreto 19.5 --- Riolunato 19.7 --- Fiorano Modenese 20.0 --- Casalgrande

Quality location estimate: Erh: 1.7 km, Erz: 2.1 km, Nf: 17, Gap: 182 °, Rms: 0.12

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.
ZCCA	IV	2025-07-06 13:38:38.280	0.018	0	-0.05	1.49	2025-07-06 13:38:45.711	0.100	2	1.74	0.00	35.2
SARM	GU	2025-07-06 13:38:38.100	0.020	0	0.02	1.54	2025-07-06 13:38:43.487	0.200	5	0.25	0.74	39.4
VLC	MN	2025-07-06 13:38:38.630	0.021	1	0.19	0.87	2025-07-06 13:38:43.740	0.139	4	-0.10	1.16	41.5
POPM	GU	2025-07-06 13:38:39.720	0.024	1	0.07	1.41	2025-07-06 13:38:45.970	0.139	4	-0.07	1.17	47.0
CARD	GU	2025-07-06 13:38:40.000	0.092	4	0.01	1.43	2025-07-06 13:38:46.380	0.148	4	-0.06	1.15	49.8
GRAM	GU	2025-07-06 13:38:40.608	0.180	7	-0.03	1.20	2025-07-06 13:38:47.330	0.229	6	-0.24	0.80	52.6
EQUI	GU	2025-07-06 13:38:40.242	0.060	2	-0.23	0.83	2025-07-06 13:38:46.191	0.200	5	-0.94	0.06	52.9
MAIM	GU	2025-07-06 13:38:41.780	0.031	1	-0.06	1.42	2025-07-06 13:38:49.100	0.421	9	-0.45	0.52	60.6
MSSA	IV	2025-07-06 13:38:47.550	0.047	2	0.09	1.20	--:--	-.---	-	-.--	-.--	93.3

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
ZCCA	IV	HH	1.15	1.31e-1	35.2	103
SARM	GU	EH	1.02	9.19e-2	39.4	219
VLC	MN	HH	1.26	8.56e-2	41.5	217
POPM	GU	HH	1.16	1.51e-1	47.0	168
CARD	GU	HH	1.16	6.63e-2	49.8	198
GRAM	GU	HH	1.18	1.13e-1	52.6	282
EQUI	GU	HH	0.60	1.63e-2	52.9	236
MAIM	GU	HH	0.88	2.07e-2	60.6	193

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.
(°)

ZCCA

HHZ

2.4081e-6

5.7719e-7

6.0477e-7

2.4201e-7

1.0821e-7

5.1284e-6

5.5545e-6

1.4997e-7

1.9760e-8

35.2

103

ZCCA

HHN

1.9489e-6

9.2128e-7

9.2692e-7

6.5063e-7

2.4761e-7

3.4869e-6

8.3630e-6

2.9091e-7

3.1611e-8

35.2

103

ZCCA

HHE

2.2802e-6

8.1565e-7

6.8208e-7

5.2775e-7

2.2612e-7

3.9613e-6

5.7513e-6

2.8032e-7

3.0463e-8

35.2

103

SARM

EHZ

2.1115e-5

3.1198e-6

8.0438e-7

1.9501e-7

9.4315e-8

3.1158e-5

3.4428e-6

1.4505e-7

3.7702e-8

39.4

219

SARM

EHN

1.1968e-5

1.5575e-6

8.6468e-7

3.5806e-7

1.6052e-7

2.6912e-5

3.5996e-6

2.0759e-7

2.6819e-8

39.4

219

SARM

EHE

1.5381e-5

1.7521e-6

8.6905e-7

3.6727e-7

1.6333e-7

1.8068e-5

4.0832e-6

2.1682e-7

3.0104e-8

39.4

219

VLC

HHZ

1.4085e-5

2.1559e-6

5.3290e-7

1.6148e-7

9.0991e-8

1.0017e-5

2.5854e-6

1.3104e-7

1.7132e-8

41.5

217

VLC

HHN

8.4717e-6

1.2691e-6

7.2954e-7

2.8961e-7

1.3895e-7

9.7175e-6

3.2701e-6

1.9149e-7

2.7111e-8

41.5

217

VLC

HHE

4.4671e-6

6.0148e-7

4.7122e-7

2.2193e-7

1.0042e-7

1.0176e-5

2.2357e-6

1.2167e-7

1.6368e-8

41.5

217

POPM

HHZ

5.7898e-6

7.2780e-7

6.0182e-7

3.1719e-7

1.3807e-7

1.1631e-5

3.1208e-6

1.7458e-7

1.9238e-8

47.0

168

POPM

HHN

6.3117e-6

1.6047e-6

1.2272e-6

5.9154e-7

2.1873e-7

2.0723e-5

7.2029e-6

3.0436e-7

4.2264e-8

47.0

168

POPM

HHE

4.7789e-6

8.7113e-7

8.3275e-7

4.4093e-7

1.9364e-7

1.8255e-5

5.7954e-6

2.5102e-7

2.9390e-8

47.0

168

CARD

HHZ

4.1940e-6

4.7223e-7

2.3428e-7

1.0054e-7

4.4230e-8

1.0414e-5

1.2125e-6

5.6557e-8

1.2293e-8

49.8

198

CARD

HHN

5.9924e-6

9.9569e-7

5.8216e-7

1.6485e-7

7.1639e-8

1.7896e-5

2.1064e-6

1.0979e-7

2.2851e-8

49.8

198

CARD

HHE

6.7874e-6

1.2122e-6

5.6267e-7

1.5979e-7

7.6612e-8

2.2839e-5

1.4315e-6

1.3233e-7

2.5953e-8

49.8

198

GRAM

HHZ

8.2032e-6

9.7000e-7

4.3100e-7

1.2761e-7

5.1840e-8

8.7599e-6

1.6161e-6

8.6303e-8

1.8310e-8

52.6

282

GRAM

HHN

1.0159e-5

1.3507e-6

9.9764e-7

2.9686e-7

1.2757e-7

1.3231e-5

4.3912e-6

1.9136e-7

3.5577e-8

52.6

282

GRAM

HHE

6.2876e-6

1.2977e-6

1.0704e-6

3.7863e-7

2.1275e-7

1.0121e-5

5.2792e-6

3.4504e-7

3.5590e-8

52.6

282

EQUI

HHZ

1.7483e-6

1.8983e-7

1.5117e-7

7.7917e-8

3.5031e-8

2.8829e-6

1.1081e-6

5.0782e-8

5.4443e-9

52.9

236

EQUI

HHN

1.0063e-6

1.7319e-7

1.3962e-7

8.9228e-8

4.4878e-8

2.0260e-6

8.4855e-7

5.4111e-8

4.4962e-9

52.9

236

EQUI

HHE

1.0825e-6

1.8128e-7

1.2147e-7

5.9885e-8

2.8046e-8

1.9574e-6

8.0520e-7

3.6857e-8

4.4000e-9

52.9

236

MAIM

HHZ

6.5065e-7

1.3050e-7

1.0370e-7

5.6191e-8

2.5175e-8

1.5553e-6

6.5120e-7

2.5992e-8

4.2751e-9

60.6

193

MAIM

HHN

1.2440e-6

1.9060e-7

2.0311e-7

1.0178e-7

3.3700e-8

3.2589e-6

1.0266e-6

3.8549e-8

6.4618e-9

60.6

193

MAIM

HHE

7.0926e-7

1.6246e-7

1.7261e-7

8.5823e-8

4.0155e-8

2.4227e-6

1.0238e-6

5.1526e-8

6.2241e-9

60.6

193

*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)

MANUAL Location - Area: Frignano , magnitude (ML): 1.1 2025-07-06 13:38:31 (UTC)

MANUAL Location - Area: Frignano , magnitude (M_L): 1.1
2025-07-06 13:38:31 (UTC)