RSNI - Manually revised location

MANUAL Location - Area: Alpi Marittime , magnitude (M_L): 0.2
2021-04-14 08:30:02 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-04-14 10:27:16

Earthquake info - Manual location

Event - ID :	210414082934
Magnitude (M_L) :	0.2 +/- 0.0
Origin Time :	2021-04-14 08:30:02.59 (UTC)
Location :	Latitude: 43.807 N, Longitude: 7.357 E
Area :	Alpi Marittime
Depth (km) :	3.76
Distances (km) :	15.2 --- Olivetta San Michele 17.4 --- Airole 20.2 --- Ventimiglia 21.8 --- Camporosso 21.8 --- Rocchetta Nervina 22.0 --- Dolceacqua 22.8 --- Vallecrosia 23.5 --- San Biagio della Cima 24.0 --- Soldano 24.1 --- Isolabona 24.6 --- Bordighera 24.8 --- Vallebona 25.6 --- Apricale 25.9 --- Perinaldo 27.1 --- Seborga 28.4 --- Pigna 28.9 --- Castel Vittorio 28.9 --- Ospedaletti 31.1 --- Baiardo 33.5 --- San Remo

Quality location estimate: Erh: 1.2 km, Erz: 0.7 km, Nf: 8, Gap: 219 °, Rms: 0.05

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.
ESCA	FR	2021-04-14 08:30:04.070	0.009	0	-0.07	0.98	2021-04-14 08:30:05.234	0.040	0	-0.01	1.22	4.4
MON	FR	2021-04-14 08:30:05.130	0.013	0	0.01	1.25	2021-04-14 08:30:06.907	0.040	0	0.00	1.21	10.7
TURF	FR	2021-04-14 08:30:07.157	0.020	0	0.01	1.23	2021-04-14 08:30:10.540	0.040	0	0.03	1.01	19.3
ENR	GU	2021-04-14 08:30:11.644	0.020	0	-0.20	0.35	2021-04-14 08:30:18.340	0.040	0	-0.04	0.75	47.5

Local magnitude (M_L) calculation results

Station	Net	Channels	Stat. Mag.	Wood-And. Ampl.	Dist. (km)	Azimuth
ENR	GU	HH	0.25	1.24e-2	47.5	6

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.
(°)

ENR

HHZ

5.6158e-7

6.4918e-8

4.2264e-8

2.8230e-8

1.0931e-8

8.0870e-7

2.5893e-7

1.4183e-8

1.8166e-9

47.5

ENR

HHN

3.2386e-6

2.9052e-7

7.7878e-8

4.9546e-8

4.1807e-8

2.4734e-6

3.7003e-7

7.7224e-8

7.4525e-9

47.5

ENR

HHE

3.4239e-6

2.9057e-7

7.6802e-8

3.8990e-8

1.7137e-8

2.6932e-6

4.6517e-7

2.5560e-8

6.0115e-9

47.5

*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: Alpi Marittime , magnitude (ML): 0.2 2021-04-14 08:30:02 (UTC)

MANUAL Location - Area: Alpi Marittime , magnitude (M_L): 0.2
2021-04-14 08:30:02 (UTC)