Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 28-12-2021 and time 12:58:44 (Italy) in region 6 km SE Laviano (SA)

A magnitude ML 0.9 earthquake occured in region: 6 km SE Laviano (SA), on

  • 28-12-2021 11:58:44 (UTC)
  • 28-12-2021 12:58:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.7530, 15.3620 at 11 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
Laviano SA 6 1438 1438
Colliano SA 7 3638 5076
Santomenna SA 7 443 5519
Castelgrande PZ 7 943 6462
Valva SA 8 1643 8105
Castelnuovo di Conza SA 8 619 8724
Pescopagano PZ 10 1910 10634
Sant'Andrea di Conza AV 10 1539 12173
Muro Lucano PZ 10 5497 17670
San Gregorio Magno SA 11 4286 21956
Palomonte SA 12 3985 25941
Conza della Campania AV 12 1373 27314
Calabritto AV 12 2391 29705
Oliveto Citra SA 13 3802 33507
Caposele AV 13 3483 36990
Senerchia AV 13 842 37832
Buccino SA 14 5047 42879
Ricigliano SA 14 1144 44023
Teora AV 14 1537 45560
Bella PZ 15 5171 50731
Romagnano al Monte SA 15 368 51099
Contursi Terme SA 15 3394 54493
Rapone PZ 16 990 55483
Cairano AV 16 326 55809
San Fele PZ 17 3004 58813
Balvano PZ 17 1830 60643
Calitri AV 18 4666 65309
Ruvo del Monte PZ 19 1083 66392
Salvitelle SA 20 560 66952

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Battipaglia (50786 inhabitants)
40 Km W of Potenza (67122 inhabitants)
51 Km E of Avellino (54857 inhabitants)
51 Km E of Salerno (135261 inhabitants)
56 Km E of Cava de' Tirreni (53659 inhabitants)
64 Km SE of Benevento (60091 inhabitants)
70 Km E of Scafati (50787 inhabitants)
73 Km SW of Cerignola (58396 inhabitants)
75 Km E of Castellammare di Stabia (66466 inhabitants)
80 Km S of Foggia (151991 inhabitants)
84 Km E of Torre del Greco (86275 inhabitants)
85 Km E of Portici (55274 inhabitants)
86 Km E of Ercolano (53709 inhabitants)
86 Km E of Acerra (59573 inhabitants)
90 Km E of Afragola (65057 inhabitants)
92 Km E of Casoria (77642 inhabitants)
94 Km E of Caserta (76326 inhabitants)
94 Km E of Napoli (974074 inhabitants)
95 Km SW of Andria (100440 inhabitants)
99 Km SW of Barletta (94814 inhabitants)
100 Km E of Giugliano in Campania (122974 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 0.9 2021-12-28
11:58:44		 40.7533 15.3617 11 2022-03-30
13:04:34		 Bollettino Sismico Italiano INGV 100482381
Reviewed
Rev100 		ML 0.9 2021-12-28
11:58:44		 40.8 15.3847 10 2021-12-28
12:05:55		 Sala Sismica INGV-Roma 99078891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-28 11:58:44 ± 0.11
Latitude 40.7533 ± 0.0090
Longitude 15.3617 ± 0.0083
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100482381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 975
Semi-minor axis of confidence ellipse (meter) 580
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 187
Circular confidence region, given by single value of horizontal uncertainty (meter) 980.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.26710
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 100482381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-01 14:55:23

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 99078891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-28 12:05:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMN.HHZ. 2021-12-28T11:59:15.04 3.0 undecidable manual Sg 0.14 0
IV.TST01.HHZ. 2021-12-28T11:58:57.26 3.0 undecidable manual P 3.45 0
IV.CDRU.HNZ. 2021-12-28T11:58:55.60 0.6 undecidable manual S 189 29.6481 91 0.65 42
IV.SNAL.HNE. 2021-12-28T11:58:54.06 0.6 undecidable manual S 326 22.9548 91 0.89 38
IX.NSC3.EHE.02 2021-12-28T11:58:52.65 0.6 undecidable manual S 297 22.6551 91 -0.43 45
IX.SCL3.EHZ.02 2021-12-28T11:58:51.05 0.6 undecidable manual S 117 14.1747 100 0.23 48
IX.SNR3.EHZ.02 2021-12-28T11:58:51.66 0.3 undecidable manual S 262 14.3745 99 0.79 58
IV.MCRV.HHZ. 2021-12-28T11:58:51.30 0.6 undecidable manual S 281 16.5723 94 -0.16 48
IV.SNAL.HNE. 2021-12-28T11:58:49.42 0.3 undecidable manual P 326 22.9548 91 -0.12 71
IX.RDM3.HHZ.02 2021-12-28T11:58:49.18 0.3 undecidable manual P 47 19.9689 92 0.1 74
IV.MRLC.HHE. 2021-12-28T11:58:49.84 0.6 undecidable manual S 88 10.6782 118 -0.11 49
IV.CDRU.HNZ. 2021-12-28T11:58:49.95 0.3 undecidable manual P 189 29.6481 91 -0.62 62
IX.COL3.HHZ.02 2021-12-28T11:58:49.19 0.6 undecidable manual S 200 7.7811 133 -0.13 50
IX.NSC3.EHE.02 2021-12-28T11:58:48.98 0.3 undecidable manual P 297 22.6551 91 -0.51 66
IX.SCL3.EHZ.02 2021-12-28T11:58:48.25 0.3 undecidable manual P 117 14.1747 100 0.06 74
IX.SNR3.EHZ.02 2021-12-28T11:58:48.47 0.3 undecidable manual P 262 14.3745 99 0.26 71
IX.VDS3.HNN.01 2021-12-28T11:58:48.75 0.6 undecidable manual S 104 5.6943 145 -0.2 49
IV.MCRV.HHZ. 2021-12-28T11:58:48.25 0.3 undecidable manual P 281 16.5723 94 -0.3 70
IV.MRLC.HHE. 2021-12-28T11:58:48.03 0.3 undecidable manual P 88 10.6782 118 0.35 70
IX.VDS3.HNN.01 2021-12-28T11:58:47.02 0.3 undecidable manual P 104 5.6943 145 -0.08 75
IX.COL3.HHZ.02 2021-12-28T11:58:47.25 0.1 positive manual P 200 7.7811 133 -0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IX.COL3.HHN.02 ML:0.9 0.00010605 0.58 AML other m 2021-12-28T11:58:49.44
IX.COL3.HHE.02 ML:1.0 0.0001455 0.32 AML other m 2021-12-28T11:58:50.62
IV.MCRV.HHN. ML:0.8 0.0000555 0.5 AML other m 2021-12-28T11:58:51.44
IV.MCRV.HHE. ML:0.7 0.0000402 0.42 AML other m 2021-12-28T11:58:53.13
IX.SCL3.EHN.02 ML:1.0 0.00008499999999999999 0.82 AML other m 2021-12-28T11:58:53.41
IX.SCL3.EHE.02 ML:0.9 0.00006785 0.82 AML other m 2021-12-28T11:58:53.47
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