Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 04-08-2020 and time 03:44:41 (UTC) in region Costa Cilentana (Salerno)

A magnitude ML 1.7 earthquake occured in region: Costa Cilentana (Salerno), on

  • 04-08-2020 03:44:41 (UTC)
  • 04-08-2020 05:44:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.9450, 15.2210 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Centola SA 16 5168 5168
Camerota SA 16 6985 12153
Pisciotta SA 18 2641 14794

Municipalities with at least 50000 inhabitants

An earthquake occurred to
77 Km S of Battipaglia (50786 inhabitants)
91 Km SE of Salerno (135261 inhabitants)
92 Km SW of Potenza (67122 inhabitants)
95 Km SE of Cava de' Tirreni (53659 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.7 2020-08-04
03:44:41		 39.9448 15.2212 10 2020-11-19
12:36:56		 Bollettino Sismico Italiano INGV 81675421
Reviewed
Rev100 		ML 1.7 2020-08-04
03:44:42		 39.9488 15.2427 10 2020-08-04
03:59:39		 Sala Sismica INGV-Roma 81626871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-04 03:44:41 ± 0.34
Latitude 39.9448 ± 0.0099
Longitude 15.2212 ± 0.0188
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81675421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1699
Semi-minor axis of confidence ellipse (meter) 615
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 65
Circular confidence region, given by single value of horizontal uncertainty (meter) 1700.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 230
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.02882
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 81675421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-05 13:31:07

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 81626871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-04 03:59:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ZONE.HHZ. 2020-08-04T03:46:28.65 3.0 undecidable manual Pg 8.97 0
IV.EUCT.HNZ. 2020-08-04T03:46:27.97 3.0 undecidable manual Pg 8.54 0
IV.FOSV.EHZ. 2020-08-04T03:46:25.21 3.0 undecidable manual Sg 2.37 0
IV.MNTT.EHZ. 2020-08-04T03:46:13.08 3.0 undecidable manual Sg 1.51 0
IV.ARRO.EHZ. 2020-08-04T03:46:03.16 3.0 undecidable manual Sg -4.64 0
IV.CAR1.HHZ. 2020-08-04T03:45:15.75 0.3 undecidable manual S 132 114.1968 50 0.74 52
IV.CET2.HHZ. 2020-08-04T03:45:05.15 0.3 undecidable manual S 126 77.7666 50 -0.12 67
IV.SGO.HHE. 2020-08-04T03:45:03.16 0.3 undecidable manual S 6 68.6757 50 0.31 65
IX.PST3.HHE.02 2020-08-04T03:45:03.30 0.6 undecidable manual S 2 68.376 50 0.53 41
IV.MMN.HHE. 2020-08-04T03:45:02.39 0.3 undecidable manual S 95 65.6898 50 0.33 65
IV.CAR1.HHZ. 2020-08-04T03:45:01.97 0.3 undecidable manual P 132 114.1968 50 0.95 48
IV.SIRI.HHZ. 2020-08-04T03:45:01.30 0.3 undecidable manual S 64 60.8946 50 0.54 63
IV.GRIS.EHE. 2020-08-04T03:45:00.43 0.3 undecidable manual S 113 58.3971 50 0.32 66
IV.PTRJ.HNZ. 2020-08-04T03:44:58.53 3.0 undecidable manual Pg -7.29 0
MN.CUC.HHZ. 2020-08-04T03:44:57.89 0.3 undecidable manual S 84 50.8158 50 -0.19 69
IV.CET2.HHZ. 2020-08-04T03:44:55.54 0.3 undecidable manual P 126 77.7666 50 0.14 67
IX.PST3.HHE.02 2020-08-04T03:44:54.62 0.3 undecidable manual P 2 68.376 50 0.67 59
IV.MGR.HHZ. 2020-08-04T03:44:53.48 0.3 undecidable manual S 53 35.4423 50 -0.49 67
IV.MMN.HHE. 2020-08-04T03:44:53.22 0.3 undecidable manual P 95 65.6898 50 -0.32 66
IV.SGO.HHE. 2020-08-04T03:44:53.62 0.3 undecidable manual P 6 68.6757 50 -0.38 64
IV.SLCN.HNZ. 2020-08-04T03:44:52.99 0.3 undecidable manual P 35 60.495 50 0.26 67
IV.SIRI.HHZ. 2020-08-04T03:44:52.66 0.3 undecidable manual P 64 60.8946 50 -0.13 69
IV.CSFT.HHZ. 2020-08-04T03:44:51.24 3.0 negative manual P -9.55 0
IX.TEGI.HNN.01 2020-08-04T03:44:51.35 0.3 undecidable manual P 29 55.2003 50 -0.57 63
IV.GRIS.EHE. 2020-08-04T03:44:51.74 0.1 undecidable manual P 113 58.3971 50 -0.68 80
MN.CUC.HHZ. 2020-08-04T03:44:50.52 0.1 undecidable manual P 84 50.8158 50 -0.73 79
IV.BULG.HHZ. 2020-08-04T03:44:49.99 0.1 undecidable manual S 42 19.869 118 0.29 96
IV.MGR.HHZ. 2020-08-04T03:44:48.31 0.1 positive manual P 53 35.4423 50 -0.56 87
IV.BULG.HHZ. 2020-08-04T03:44:46.48 0.1 undecidable manual P 42 19.869 118 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BULG.HHE. ML:1.8 0.0004951856 0.16 AML other m 2020-08-04T03:44:50.95
IV.BULG.HNE. ML:1.8 0.00045376075 0.1408 AML other m 2020-08-04T03:44:50.95
IV.BULG.HHN. ML:2.1 0.00087728875 0.1184 AML other m 2020-08-04T03:44:51.32
IV.BULG.HNN. ML:2.0 0.0008217516 0.1408 AML other m 2020-08-04T03:44:51.32
IV.MGR.HNE. ML:1.6 0.0001531534 0.3488 AML other m 2020-08-04T03:44:55.01
IV.MGR.HHN. ML:1.7 0.00020310794999999998 0.1408 AML other m 2020-08-04T03:44:55.31
IV.MGR.HNN. ML:1.7 0.00020974534 0.2112 AML other m 2020-08-04T03:44:55.32
IV.MGR.HHE. ML:1.5 0.00012987335 0.16 AML other m 2020-08-04T03:44:56.67
MN.CUC.HHE. ML:1.6 0.000095078425 0.24 AML other m 2020-08-04T03:45:05.14
MN.CUC.HHN. ML:1.5 0.000082214385 0.3616 AML other m 2020-08-04T03:45:05.35
IV.SIRI.HHE. ML:1.6 0.00008690616 0.3008 AML other m 2020-08-04T03:45:05.63
IV.SIRI.HNE. ML:1.7 0.000096241805 0.32 AML other m 2020-08-04T03:45:05.48
IV.CET2.HHN. ML:2.0 0.00015956315 0.3392 AML other m 2020-08-04T03:45:07.54
IV.CET2.HHE. ML:1.8 0.00007889442999999998 1.12 AML other m 2020-08-04T03:45:07.22
IV.SIRI.HNN. ML:1.6 0.00008676788000000001 0.3392 AML other m 2020-08-04T03:45:08.20
IV.SIRI.HHN. ML:1.6 0.000081130255 0.32 AML other m 2020-08-04T03:45:08.20
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download