Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 21-09-2023 and time 17:01:56 (Italy) in region 7 km W Castelsaraceno (PZ)

A magnitude ML 1.0 earthquake occured in region: 7 km W Castelsaraceno (PZ), on

  • 21-09-2023 15:01:56 (UTC)
  • 21-09-2023 17:01:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.1670, 15.9150 at 5 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
Castelsaraceno PZ 7 1384 1384
Moliterno PZ 9 4062 5446
Sarconi PZ 9 1404 6850
Latronico PZ 12 4556 11406
Spinoso PZ 12 1462 12868
Grumento Nova PZ 13 1700 14568
Lagonegro PZ 14 5584 20152
San Martino d'Agri PZ 14 801 20953
San Chirico Raparo PZ 14 1084 22037
Lauria PZ 15 12919 34956
Nemoli PZ 15 1495 36451
Carbone PZ 15 638 37089
Montemurro PZ 16 1235 38324
Rivello PZ 17 2767 41091
Castelluccio Superiore PZ 18 824 41915
Castelluccio Inferiore PZ 19 2131 44046
Episcopia PZ 19 1434 45480
Trecchina PZ 19 2316 47796
Viggiano PZ 19 3329 51125
Calvera PZ 20 387 51512

Municipalities with at least 50000 inhabitants

An earthquake occurred to
53 Km S of Potenza (67122 inhabitants)
80 Km SW of Matera (60436 inhabitants)
91 Km SW of Altamura (70396 inhabitants)
93 Km SE 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 1.0 2023-09-21
15:01:56		 40.1672 15.9148 5 2023-09-21
15:10:20		 Sala Sismica INGV-Roma 121316541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-21 15:01:56 ± 0.11
Latitude 40.1672 ± 0.0036
Longitude 15.9148 ± 0.0035
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121316541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 420
Semi-minor axis of confidence ellipse (meter) 85
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 207
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.23742
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 121316541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-21 15:10:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2023-09-21T15:03:46.22 3.0 undecidable manual Sn 5.34 0
IV.ATFO.HHZ. 2023-09-21T15:03:44.08 3.0 undecidable manual Sg 17.25 0
IV.AGST.EHZ. 2023-09-21T15:03:25.57 3.0 undecidable manual Sg 6.43 0
IV.ZCCA.HNZ. 2023-09-21T15:03:18.35 3.0 negative manual Pg 13.84 0
IV.SERS.HHZ. 2023-09-21T15:02:39.68 3.0 undecidable manual Sn -0.02 0
IV.SACR.HHZ. 2023-09-21T15:02:09.22 3.0 positive manual P 0.02 0
IV.MCEL.HHZ. 2023-09-21T15:02:03.43 0.3 undecidable manual S 331 19.9689 103 0.09 73
IV.MTSN.HHN. 2023-09-21T15:02:02.54 0.6 undecidable manual S 308 17.6712 104 -0.04 49
IV.SCHR.EHZ. 2023-09-21T15:02:01.41 0.3 undecidable manual S 75 14.0748 108 0.02 74
XE.T0701.HNZ. 2023-09-21T15:02:01.90 1.0 undecidable manual P 140 26.3514 100 0.29 23
IV.MTSN.HHN. 2023-09-21T15:02:00.16 0.6 undecidable manual P 308 17.6712 104 0.26 47
MN.CUC.HHN. 2023-09-21T15:02:00.52 0.1 undecidable manual P 204 20.9679 102 -0.03 98
IV.MCEL.HHZ. 2023-09-21T15:02:00.05 0.6 undecidable manual P 331 19.9689 103 -0.29 46
IV.SCHR.EHZ. 2023-09-21T15:01:59.01 1.0 positive manual P 75 14.0748 108 -0.2 24
IV.SIRI.HHZ. 2023-09-21T15:01:58.47 0.6 undecidable manual S 292 4.3956 136 0.04 50
IV.SIRI.HHZ. 2023-09-21T15:01:57.45 0.1 undecidable manual P 292 4.3956 136 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCEL.HNN. ML:0.9 0.0000644 1.42 AML other m 2023-09-21T15:01:58.81
IV.MCEL.HNE. ML:1.1 0.0001097 0.52 AML other m 2023-09-21T15:02:04.51
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