Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 23-03-2023 and time 08:11:28 (UTC) in region 3 km N Sant'Elia a Pianisi (CB)

A magnitude ML 1.6 earthquake occured in region: 3 km N Sant'Elia a Pianisi (CB), on

  • 23-03-2023 08:11:28 (UTC)
  • 23-03-2023 09:11:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.6520, 14.8740 at 21 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
Sant'Elia a Pianisi CB 3 1818 1818
Monacilioni CB 7 523 2341
Ripabottoni CB 7 514 2855
Macchia Valfortore CB 7 576 3431
Bonefro CB 8 1384 4815
Pietracatella CB 8 1375 6190
Colletorto CB 8 1938 8128
San Giuliano di Puglia CB 9 1042 9170
Provvidenti CB 9 119 9289
Campolieto CB 9 839 10128
Casacalenda CB 10 2135 12263
Morrone del Sannio CB 10 587 12850
Carlantino FG 11 980 13830
Montelongo CB 11 365 14195
Santa Croce di Magliano CB 12 4435 18630
Toro CB 12 1391 20021
San Giovanni in Galdo CB 13 580 20601
Montorio nei Frentani CB 13 437 21038
Celenza Valfortore FG 13 1598 22636
Castellino del Biferno CB 13 545 23181
Matrice CB 14 1115 24296
Campodipietra CB 15 2570 26866
Rotello CB 16 1212 28078
Petrella Tifernina CB 16 1170 29248
Jelsi CB 16 1781 31029
Gambatesa CB 16 1464 32493
Montagano CB 17 1086 33579
Larino CB 17 6793 40372
Lupara CB 17 505 40877
Lucito CB 18 696 41573
San Marco la Catola FG 18 1012 42585
Castelbottaccio CB 18 312 42897
Ripalimosani CB 18 3114 46011
Guardialfiera CB 18 1065 47076
Riccia CB 19 5262 52338
Gildone CB 19 809 53147
Casalnuovo Monterotaro FG 19 1556 54703
Tufara CB 20 925 55628

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of San Severo (53905 inhabitants)
58 Km N of Benevento (60091 inhabitants)
60 Km W of Foggia (151991 inhabitants)
78 Km NE of Caserta (76326 inhabitants)
82 Km N of Avellino (54857 inhabitants)
87 Km W of Manfredonia (57279 inhabitants)
89 Km NE of Acerra (59573 inhabitants)
94 Km NE of Afragola (65057 inhabitants)
94 Km NE of Aversa (53047 inhabitants)
96 Km W of Cerignola (58396 inhabitants)
96 Km NE of Casoria (77642 inhabitants)
97 Km SE of Chieti (51815 inhabitants)
98 Km NE 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 1.6 2023-03-23
08:11:28		 41.6517 14.8738 21 2024-03-01
17:18:02		 Bollettino Sismico Italiano INGV 116085341
Reviewed
Rev100 		ML 1.7 2023-03-23
08:11:28		 41.6452 14.8762 23 2023-03-23
08:22:45		 Sala Sismica INGV-Roma 115660221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-23 08:11:28 ± 0.16
Latitude 41.6517 ± 0.0081
Longitude 14.8738 ± 0.0084
Depth (km) 21 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116085341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 895
Semi-minor axis of confidence ellipse (meter) 307
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 347
Circular confidence region, given by single value of horizontal uncertainty (meter) 900.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.02338
Epicentral distance of station farthest from the epicenter (degree) 0.65740
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 116085341
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-21 15:21:17

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 115660221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-23 08:22:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LPEL.HHZ. 2023-03-23T08:11:50.74 0.6 undecidable manual S 308 71.9724 99 0.75 38
IV.SGRT.HHZ. 2023-03-23T08:11:41.36 0.3 undecidable manual P 81 72.9714 99 0.47 63
IV.LPEL.HHZ. 2023-03-23T08:11:40.31 0.3 undecidable manual P 308 71.9724 99 -0.43 64
OT.OT05.EHZ. 2023-03-23T08:11:39.09 0.3 undecidable manual P 89 60.3951 102 0.1 70
IV.SACR.HHZ. 2023-03-23T08:11:39.89 0.6 undecidable manual S 206 31.4463 115 0.31 47
IV.RNI2.HNE. 2023-03-23T08:11:39.05 0.3 undecidable manual P 276 60.0954 102 0.11 70
OT.OT16.EHZ. 2023-03-23T08:11:39.70 0.6 undecidable manual S 50 31.8459 115 0.04 50
IV.BSSO.HHZ. 2023-03-23T08:11:38.75 0.6 undecidable manual S 243 26.0517 121 0.46 46
IV.SGG.HHN. 2023-03-23T08:11:37.44 0.3 undecidable manual P 235 50.5161 104 -0.07 72
IV.MELA.HHZ. 2023-03-23T08:11:37.78 0.3 undecidable manual S 74 21.867 127 0.42 70
IV.GATE.HHZ. 2023-03-23T08:11:36.45 0.6 undecidable manual S 169 15.6732 138 0.31 48
IV.PABO.HHN. 2023-03-23T08:11:36.47 0.6 undecidable manual P 285 41.7249 108 0.26 47
IV.MOCO.HNE. 2023-03-23T08:11:35.68 0.6 undecidable manual P 143 39.1275 110 -0.15 48
IV.SACR.HHZ. 2023-03-23T08:11:34.50 0.1 undecidable manual P 206 31.4463 115 -0.23 96
IV.CIGN.HHZ. 2023-03-23T08:11:34.87 0.6 undecidable manual S 84 2.5974 172 0.26 50
OT.OT16.EHZ. 2023-03-23T08:11:34.60 0.3 undecidable manual P 50 31.8459 115 -0.18 73
IV.MELA.HHZ. 2023-03-23T08:11:33.31 0.1 undecidable manual P 74 21.867 127 -0.14 100
IV.BSSO.HHZ. 2023-03-23T08:11:33.91 0.1 undecidable manual P 243 26.0517 121 -0.08 100
IT.PLTA.HNN. 2023-03-23T08:11:33.80 1.0 undecidable manual P 345 26.9508 120 -0.31 24
IT.LRNO.HNZ. 2023-03-23T08:11:32.84 0.6 undecidable manual P 13 17.5713 134 -0.11 50
IV.GATE.HHZ. 2023-03-23T08:11:32.80 0.3 undecidable manual P 169 15.6732 138 0.06 76
IV.CIGN.HHZ. 2023-03-23T08:11:30.89 0.1 undecidable manual P 84 2.5974 172 -0.97 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CIGN.HHE. ML:2.3 0.00147 1.52 AML other m 2023-03-23T08:11:36.07
IV.CIGN.HHN. ML:2.3 0.001645 0.46 AML other m 2023-03-23T08:11:37.27
IV.MELA.HHE. ML:1.5 0.0001525 0.66 AML other m 2023-03-23T08:11:37.70
IV.MELA.HHN. ML:1.6 0.000194 0.6 AML other m 2023-03-23T08:11:38.36
IV.BSSO.HHN. ML:1.6 0.000186 0.56 AML other m 2023-03-23T08:11:39.47
IV.BSSO.HNN. ML:1.6 0.0001899574 0.5632 AML other m 2023-03-23T08:11:39.47
IV.GATE.HHN. ML:1.5 0.000189 0.7 AML other m 2023-03-23T08:11:39.64
IV.GATE.HNN. ML:1.5 0.000183 0.36 AML other m 2023-03-23T08:11:39.65
IV.SACR.HHE. ML:1.0 0.00003666185 0.2816 AML other m 2023-03-23T08:11:39.98
IV.SACR.HHN. ML:0.9 0.000031544274999999994 0.9984 AML other m 2023-03-23T08:11:40.65
IV.GATE.HHE. ML:1.5 0.000212 0.48 AML other m 2023-03-23T08:11:41.85
IV.GATE.HNE. ML:1.6 0.00022899999999999998 0.42 AML other m 2023-03-23T08:11:41.86
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