Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 13-08-2023 and time 14:34:25 (Italy) in region 1 km NE Anzi (PZ)

A magnitude ML 0.9 earthquake occured in region: 1 km NE Anzi (PZ), on

  • 13-08-2023 12:34:25 (UTC)
  • 13-08-2023 14:34:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.5250, 15.9380 at 8 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
Anzi PZ 2 1696 1696
Laurenzana PZ 8 1797 3493
Trivigno PZ 8 678 4171
Calvello PZ 9 1948 6119
Castelmezzano PZ 9 800 6919
Brindisi Montagna PZ 10 908 7827
Pietrapertosa PZ 11 1032 8859
Abriola PZ 11 1531 10390
Albano di Lucania PZ 11 1435 11825
Campomaggiore PZ 13 811 12636
Pignola PZ 14 6962 19598
Vaglio Basilicata PZ 16 2047 21645
Potenza PZ 17 67122 88767
Corleto Perticara PZ 18 2511 91278
Accettura MT 19 1856 93134
Marsicovetere PZ 19 5546 98680
Tolve PZ 20 3251 101931

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SE of Potenza (67122 inhabitants)
58 Km W of Matera (60436 inhabitants)
62 Km SW of Altamura (70396 inhabitants)
81 Km E of Battipaglia (50786 inhabitants)
83 Km S of Cerignola (58396 inhabitants)
84 Km SW of Andria (100440 inhabitants)
91 Km SW of Bitonto (55540 inhabitants)
93 Km SW of Trani (56217 inhabitants)
93 Km SW of Bisceglie (55422 inhabitants)
93 Km SW of Barletta (94814 inhabitants)
94 Km SW of Molfetta (59874 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 2023-08-13
12:34:25		 40.5247 15.9377 8 2023-08-13
12:42:53		 Sala Sismica INGV-Roma 120087961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-13 12:34:25 ± 0.14
Latitude 40.5247 ± 0.0063
Longitude 15.9377 ± 0.0083
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 120087961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 691
Semi-minor axis of confidence ellipse (meter) 419
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 117
Circular confidence region, given by single value of horizontal uncertainty (meter) 690.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.09353
Epicentral distance of station farthest from the epicenter (degree) 0.34624
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 120087961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-08-13 12:42:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SIRI.HHZ. 2023-08-13T12:34:39.51 0.3 undecidable manual S 189 38.4282 50 0.09 72
IV.MTSN.HHZ. 2023-08-13T12:34:37.55 0.3 undecidable manual S 209 32.745 103 0.02 73
IV.ACER.HHZ. 2023-08-13T12:34:36.51 0.3 undecidable manual S 1 29.0487 104 0.21 71
IV.SLCN.HHZ. 2023-08-13T12:34:36.87 0.3 undecidable manual S 240 29.748 104 0.34 69
IV.SIRI.HHZ. 2023-08-13T12:34:33.38 0.1 undecidable manual P 189 38.4282 50 -0.32 91
IV.MTSN.HHZ. 2023-08-13T12:34:32.11 0.3 undecidable manual P 209 32.745 103 -0.5 66
IV.ACER.HHZ. 2023-08-13T12:34:31.85 0.1 undecidable manual P 1 29.0487 104 -0.05 98
IV.SLCN.HHZ. 2023-08-13T12:34:31.99 0.1 undecidable manual P 240 29.748 104 -0.05 98
IV.MCEL.HHZ. 2023-08-13T12:34:31.45 0.1 undecidable manual P 207 24.9528 107 0.34 93
IV.PTRP.HHZ. 2023-08-13T12:34:30.21 0.1 undecidable manual S 92 10.3785 125 -0.12 100
IX.PGN3.HHZ.02 2023-08-13T12:34:30.47 0.1 undecidable manual S 294 12.9759 120 -0.62 88
IX.PGN3.HHZ.02 2023-08-13T12:34:29.43 0.1 undecidable manual P 294 12.9759 120 0.54 90
IV.PTRP.HHZ. 2023-08-13T12:34:28.57 0.1 undecidable manual P 92 10.3785 125 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IX.PGN3.HHN.02 ML:0.7 0.00005890000000000001 0.24 AML other m 2023-08-13T12:34:32.82
IX.PGN3.HHE.02 ML:0.7 0.0000615 0.68 AML other m 2023-08-13T12:34:33.19
IV.ACER.HHE. ML:1.2 0.00008340000000000001 1.46 AML other m 2023-08-13T12:34:36.85
IV.ACER.HHN. ML:1.2 0.00007805000000000001 1.56 AML other m 2023-08-13T12:34:37.79
IV.SIRI.HHE. ML:1.0 0.000038599999999999996 0.58 AML other m 2023-08-13T12:34:40.94
IV.SIRI.HHN. ML:0.7 0.0000214 0.94 AML other m 2023-08-13T12:34:42.64
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