Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 15-03-2020 and time 15:57:34 (Italy) in region 2 km N Valva (SA)

A magnitude ML 1.6 earthquake occured in region: 2 km N Valva (SA), on

  • 15-03-2020 14:57:34 (UTC)
  • 15-03-2020 15:57:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.7570, 15.2700 at 23 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
Valva SA 2 1643 1643
Colliano SA 4 3638 5281
Laviano SA 4 1438 6719
Calabritto AV 5 2391 9110
Senerchia AV 6 842 9952
Santomenna SA 7 443 10395
Caposele AV 7 3483 13878
Oliveto Citra SA 8 3802 17680
Castelnuovo di Conza SA 8 619 18299
Teora AV 11 1537 19836
Palomonte SA 11 3985 23821
Contursi Terme SA 12 3394 27215
Conza della Campania AV 13 1373 28588
Sant'Andrea di Conza AV 13 1539 30127
Pescopagano PZ 14 1910 32037
Castelgrande PZ 14 943 32980
Lioni AV 15 6201 39181
San Gregorio Magno SA 16 4286 43467
Buccino SA 16 5047 48514
Campagna SA 17 16703 65217
Cairano AV 18 326 65543
Acerno SA 18 2783 68326
Muro Lucano PZ 18 5497 73823
Morra De Sanctis AV 19 1297 75120
Bagnoli Irpino AV 19 3217 78337
Romagnano al Monte SA 20 368 78705

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Battipaglia (50786 inhabitants)
44 Km E of Avellino (54857 inhabitants)
44 Km E of Salerno (135261 inhabitants)
47 Km W of Potenza (67122 inhabitants)
48 Km E of Cava de' Tirreni (53659 inhabitants)
58 Km SE of Benevento (60091 inhabitants)
63 Km E of Scafati (50787 inhabitants)
67 Km E of Castellammare di Stabia (66466 inhabitants)
76 Km E of Torre del Greco (86275 inhabitants)
77 Km E of Portici (55274 inhabitants)
78 Km SW of Cerignola (58396 inhabitants)
78 Km E of Ercolano (53709 inhabitants)
78 Km E of Acerra (59573 inhabitants)
82 Km S of Foggia (151991 inhabitants)
83 Km E of Afragola (65057 inhabitants)
84 Km E of Casoria (77642 inhabitants)
86 Km E of Napoli (974074 inhabitants)
86 Km E of Caserta (76326 inhabitants)
92 Km E of Giugliano in Campania (122974 inhabitants)
92 Km E of Marano di Napoli (59874 inhabitants)
93 Km E of Aversa (53047 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 1.6 2020-03-15
14:57:34		 40.7572 15.2702 23 2020-07-18
21:08:27		 Bollettino Sismico Italiano INGV 77397661
Reviewed
Rev100 		ML 1.5 2020-03-15
14:57:35		 40.8078 15.2638 11 2020-03-15
15:10:34		 Sala Sismica INGV-Roma 77278571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-15 14:57:34 ± 0.13
Latitude 40.7572 ± 0.0054
Longitude 15.2702 ± 0.0071
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77397661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 695
Semi-minor axis of confidence ellipse (meter) 248
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 46
Circular confidence region, given by single value of horizontal uncertainty (meter) 700.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.06205
Epicentral distance of station farthest from the epicenter (degree) 0.59715
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 77397661
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-24 11:37:45

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 77278571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-15 15:10:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HHZ. 2020-03-15T14:57:49.55 3.0 undecidable manual P 66.2781 3.22 0
IV.MCEL.HNZ. 2020-03-15T14:57:46.02 0.1 undecidable manual P 137 65.5899 103 -0.21 88
IX.MNT3.HHZ.02 2020-03-15T14:57:44.42 0.3 undecidable manual S 292 23.8539 128 -0.14 72
IV.SGO.HNZ. 2020-03-15T14:57:44.26 0.3 undecidable manual S 172 22.0668 131 0.07 74
IV.MRLC.HHZ. 2020-03-15T14:57:43.63 0.6 undecidable manual S 90 18.3705 137 0.14 49
IV.MCRV.HHZ. 2020-03-15T14:57:42.18 0.3 undecidable manual S 288 8.9799 156 0.09 76
IX.SNR3.HNE.02 2020-03-15T14:57:41.80 0.3 undecidable manual S 250 6.8931 161 -0.09 74
IX.SRN3.HNN.02 2020-03-15T14:57:41.90 0.1 undecidable manual P 152 33.9438 117 0.28 92
IV.MTMR.HNZ. 2020-03-15T14:57:41.08 0.3 undecidable manual P 309 28.749 122 0.16 71
IX.MNT3.HHZ.02 2020-03-15T14:57:40.49 0.3 undecidable manual P 292 23.8539 128 0.18 71
IX.RDM3.HNN.02 2020-03-15T14:57:40.35 0.1 undecidable manual P 59 25.8519 126 -0.21 95
IV.SNAL.HNE. 2020-03-15T14:57:39.37 0.6 undecidable manual P 345 19.3695 135 -0.42 46
IV.SGO.HNZ. 2020-03-15T14:57:39.91 0.1 undecidable manual P 172 22.0668 131 -0.18 95
IV.MRLC.HHZ. 2020-03-15T14:57:39.92 0.3 undecidable manual P 90 18.3705 137 0.24 71
IX.SNR3.HNE.02 2020-03-15T14:57:38.73 0.6 undecidable manual P 250 6.8931 161 -0.03 50
IV.MCRV.HHZ. 2020-03-15T14:57:38.96 0.1 undecidable manual P 288 8.9799 156 0.08 100
IX.COL3.HHN.02 2020-03-15T14:57:38.96 0.6 undecidable manual P 147 9.2796 156 0.07 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRLC.HNE. ML:1.3 0.000117 1.2 AML other m 2020-03-15T14:57:44.91
IV.MRLC.HHE. ML:1.7 0.00023799999999999998 1.2 AML other m 2020-03-15T14:57:44.91
IX.MNT3.HHN.02 ML:1.8 0.0003085 1.22 AML other m 2020-03-15T14:57:46.22
IX.MNT3.HHE.02 ML:1.6 0.0001975 0.74 AML other m 2020-03-15T14:57:46.38
IV.MRLC.HNN. ML:1.4 0.00013800000000000002 0.34 AML other m 2020-03-15T14:57:46.44
IV.MRLC.HHN. ML:1.8 0.0003055 0.34 AML other m 2020-03-15T14:57:46.43
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