Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 21-03-2023 and time 19:18:53 (UTC) in region 4 km SW Spinoso (PZ)

A magnitude ML 0.9 earthquake occured in region: 4 km SW Spinoso (PZ), on

  • 21-03-2023 19:18:53 (UTC)
  • 21-03-2023 20:18:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.2440, 15.9340 at 12 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Sarconi PZ 4 1404 1404
Spinoso PZ 4 1462 2866
Moliterno PZ 6 4062 6928
Grumento Nova PZ 6 1700 8628
Montemurro PZ 8 1235 9863
San Martino d'Agri PZ 10 801 10664
Castelsaraceno PZ 10 1384 12048
Viggiano PZ 11 3329 15377
Armento PZ 13 631 16008
San Chirico Raparo PZ 14 1084 17092
Tramutola PZ 15 3089 20181
Marsicovetere PZ 17 5546 25727
Carbone PZ 17 638 26365
Gallicchio PZ 18 862 27227
Corleto Perticara PZ 18 2511 29738
Latronico PZ 18 4556 34294
Guardia Perticara PZ 19 552 34846
Lagonegro PZ 20 5584 40430

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km S of Potenza (67122 inhabitants)
74 Km SW of Matera (60436 inhabitants)
84 Km SW of Altamura (70396 inhabitants)
90 Km E of Battipaglia (50786 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
Reviewed
Rev100 		ML 0.9 2023-03-21
19:18:53		 40.2437 15.9338 12 2023-03-21
19:28:07		 Sala Sismica INGV-Roma 115603491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-21 19:18:53 ± 0.1
Latitude 40.2437 ± 0.0072
Longitude 15.9338 ± 0.0035
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115603491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 766
Semi-minor axis of confidence ellipse (meter) 243
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 192
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 163
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.14119
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 115603491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-21 19:28:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PANTE.HHN. 2023-03-21T19:20:36.89 3.0 undecidable manual Sn -3.69 0
IV.PGHD.HHE. 2023-03-21T19:20:33.24 3.0 undecidable manual Sn -7.48 0
CR.ZAG.BHN. 2023-03-21T19:20:30.84 3.0 undecidable manual Pg 15.88 0
IV.CELB.HHZ. 2023-03-21T19:20:20.08 3.0 positive manual Pg 18.35 0
IV.MTGR.HHZ. 2023-03-21T19:20:09.45 3.0 undecidable manual Sn -1.7 0
MN.SENA.HHZ. 2023-03-21T19:20:08.33 3.0 undecidable manual Pg 9.37 0
IV.CRJA.HHN. 2023-03-21T19:20:08.47 3.0 undecidable manual Sn -0.96 0
IV.SRES.HHZ. 2023-03-21T19:20:07.81 3.0 undecidable manual Sn -9.91 0
IV.FIR.HHN. 2023-03-21T19:20:05.64 3.0 undecidable manual Pn 2.68 0
IV.BLLA.EHZ. 2023-03-21T19:20:01.46 3.0 positive manual Pn 1.47 0
IV.PANTE.HHE. 2023-03-21T19:19:57.53 3.0 positive manual Pg 5.72 0
IV.TREM.HHN. 2023-03-21T19:19:53.81 3.0 undecidable manual Sg 2.61 0
IV.VVLD.HHZ. 2023-03-21T19:19:51.08 3.0 undecidable manual Sn -6.31 0
IV.CERA.HHZ. 2023-03-21T19:19:50.27 3.0 undecidable manual Sg 2.52 0
1J.FX14.HHZ.00 2023-03-21T19:19:49.54 3.0 undecidable manual Sg 2.51 0
IV.EPMN.HHZ. 2023-03-21T19:19:48.66 3.0 undecidable manual Sn -1.24 0
IV.PGHD.HHE. 2023-03-21T19:19:47.66 3.0 positive manual Pn -4.23 0
IV.MTGR.HHN. 2023-03-21T19:19:45.23 3.0 positive manual Pg 9.95 0
IV.MSRU.HHZ. 2023-03-21T19:19:40.68 3.0 undecidable manual Sg 2.17 0
IV.VIVA.HHN. 2023-03-21T19:19:39.59 3.0 undecidable manual Pg 7.05 0
IV.IVGP.HHE. 2023-03-21T19:19:38.85 3.0 undecidable manual Sg 1.75 0
IV.FAGN.HHZ. 2023-03-21T19:19:36.75 3.0 positive manual Pg 4.56 0
IV.MCRV.HHN. 2023-03-21T19:19:15.96 3.0 undecidable manual Sn -3.95 0
IV.GIZZ.HHN. 2023-03-21T19:19:07.41 3.0 undecidable manual Pg -1.26 0
IV.CAR1.HNZ. 2023-03-21T19:19:02.58 3.0 undecidable manual P -2.88 0
IX.COL3.HHN.02 2023-03-21T19:19:00.75 3.0 undecidable manual Pn -3.97 0
IV.MCEL.HHZ. 2023-03-21T19:19:00.24 0.3 undecidable manual S 309 14.3745 112 0.08 72
IV.MTSN.HHZ. 2023-03-21T19:19:00.39 0.3 undecidable manual S 279 15.6732 108 -0.1 73
IV.SCHR.EHZ. 2023-03-21T19:18:59.78 0.3 undecidable manual S 112 12.9759 116 -0.06 74
IV.SIRI.HHZ. 2023-03-21T19:18:58.93 0.1 undecidable manual S 219 8.88 133 0 100
IV.MTSN.HHZ. 2023-03-21T19:18:57.71 0.1 undecidable manual P 279 15.6732 108 0.05 98
IV.SCHR.EHZ. 2023-03-21T19:18:57.32 0.1 undecidable manual P 112 12.9759 116 0.04 99
IV.MCEL.HHZ. 2023-03-21T19:18:57.39 0.1 undecidable manual P 309 14.3745 112 -0.08 98
IV.SIRI.HHZ. 2023-03-21T19:18:56.79 0.1 positive manual P 219 8.88 133 0.03 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SIRI.HNN. ML:0.9 0.00009520000000000001 1.14 AML other m 2023-03-21T19:18:59.78
IV.SCHR.EHE. ML:0.8 0.000055150000000000006 1.5 AML other m 2023-03-21T19:18:59.24
IV.SIRI.HHN. ML:0.9 0.00009090000000000001 0.2 AML other m 2023-03-21T19:19:00.21
IV.SCHR.EHN. ML:0.8 0.000063 0.1 AML other m 2023-03-21T19:19:00.10
IV.SIRI.HNE. ML:0.9 0.00008685 1.38 AML other m 2023-03-21T19:19:00.95
IV.MTSN.HHN. ML:1.1 0.00010499999999999999 1.04 AML other m 2023-03-21T19:19:00.88
IV.MCEL.HNE. ML:1.1 0.00011435 0.82 AML other m 2023-03-21T19:19:00.57
IV.MCEL.HHN. ML:0.6 0.0000368 0.66 AML other m 2023-03-21T19:19:01.84
IV.MTSN.HHE. ML:1.1 0.0000989 0.58 AML other m 2023-03-21T19:19:01.94
IV.SIRI.HHE. ML:0.8 0.00008199999999999999 1.22 AML other m 2023-03-21T19:19:01.83
IV.MCEL.HHE. ML:0.7 0.000045350000000000005 0.56 AML other m 2023-03-21T19:19:02.38
IV.MCEL.HNN. ML:1.2 0.00015485 1.58 AML other m 2023-03-21T19:19:02.10
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