Earthquake with magnitude of ML 1.7 on date 23-03-2023 and time 08:11:28 (UTC) in region 2 km N Sant'Elia a Pianisi (CB)

A magnitude ML 1.7 earthquake occured in region: 2 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) 41.6450, 14.8760 at 22 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.

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
Macchia Valfortore CB 6 576 2394
Monacilioni CB 7 523 2917
Pietracatella CB 7 1375 4292
Ripabottoni CB 8 514 4806
Bonefro CB 8 1384 6190
Colletorto CB 8 1938 8128
San Giuliano di Puglia CB 9 1042 9170
Campolieto CB 9 839 10009
Provvidenti CB 9 119 10128
Carlantino FG 10 980 11108
Casacalenda CB 11 2135 13243
Morrone del Sannio CB 11 587 13830
Montelongo CB 12 365 14195
Toro CB 12 1391 15586
San Giovanni in Galdo CB 12 580 16166
Santa Croce di Magliano CB 12 4435 20601
Celenza Valfortore FG 13 1598 22199
Montorio nei Frentani CB 14 437 22636
Castellino del Biferno CB 14 545 23181
Matrice CB 14 1115 24296
Campodipietra CB 14 2570 26866
Gambatesa CB 15 1464 28330
Jelsi CB 16 1781 30111
Petrella Tifernina CB 16 1170 31281
Rotello CB 16 1212 32493
Montagano CB 17 1086 33579
San Marco la Catola FG 17 1012 34591
Lupara CB 18 505 35096
Larino CB 18 6793 41889
Riccia CB 18 5262 47151
Ripalimosani CB 18 3114 50265
Lucito CB 18 696 50961
Castelbottaccio CB 19 312 51273
Gildone CB 19 809 52082
Guardialfiera CB 19 1065 53147
Tufara CB 19 925 54072
Casalnuovo Monterotaro FG 19 1556 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)
59 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)
88 Km NE of Acerra (59573 inhabitants)
93 Km NE of Afragola (65057 inhabitants)
93 Km NE of Aversa (53047 inhabitants)
96 Km W of Cerignola (58396 inhabitants)
96 Km NE of Casoria (77642 inhabitants)
98 Km NE of Giugliano in Campania (122974 inhabitants)
98 Km SE of Chieti (51815 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.7 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 ± 0.27
Latitude 41.6452 ± 0.0117
Longitude 14.8762 ± 0.0120
Depth (km) 23 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115660221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1138
Semi-minor axis of confidence ellipse (meter) 615
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 350
Circular confidence region, given by single value of horizontal uncertainty (meter) 1140.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.02338
Epicentral distance of station farthest from the epicenter (degree) 0.65650
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

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 Takeoff_angle Residual Weight
IV.LPEL.HHZ. 2023-03-23T08:11:50.69 0.3 undecidable manual S 308 0.6538 101 0.41 62
IV.SGRT.HHZ. 2023-03-23T08:11:41.50 0.1 undecidable manual P 80 0.6565 101 0.52 81
IV.LPEL.HHZ. 2023-03-23T08:11:40.33 1.0 undecidable manual P 308 0.6538 101 -0.6 20
OT.OT16.EHZ. 2023-03-23T08:11:40.16 0.3 undecidable manual S 49 0.2896 118 0.17 70
IV.SACR.HHZ. 2023-03-23T08:11:40.04 0.3 undecidable manual S 207 0.2788 119 0.33 68
OT.OT05.EHZ. 2023-03-23T08:11:39.12 0.3 undecidable manual P 88 0.5423 103 0.04 69
IV.BSSO.HHZ. 2023-03-23T08:11:38.95 0.6 undecidable manual S 245 0.2329 124 0.39 45
IV.MELA.HHZ. 2023-03-23T08:11:37.84 0.3 undecidable manual S 72 0.1970 130 0.14 72
IV.GATE.HHZ. 2023-03-23T08:11:36.86 0.3 undecidable manual S 169 0.1340 142 0.45 69
IV.CIGN.HHZ. 2023-03-23T08:11:35.22 0.1 undecidable manual S 67 0.0234 173 0.12 100
OT.OT16.EHZ. 2023-03-23T08:11:35.17 1.0 undecidable manual P 49 0.2896 118 0.17 23
IV.SACR.HHZ. 2023-03-23T08:11:34.50 0.1 undecidable manual P 207 0.2788 119 -0.33 91
IV.MELA.HHZ. 2023-03-23T08:11:33.32 0.1 negative manual P 72 0.1970 130 -0.35 92
IV.BSSO.HHZ. 2023-03-23T08:11:33.91 0.6 positive manual P 245 0.2329 124 -0.26 47
IV.GATE.HHZ. 2023-03-23T08:11:32.78 0.3 undecidable manual P 169 0.1340 142 -0.14 73
IV.CIGN.HHZ. 2023-03-23T08:11:30.94 0.1 undecidable manual P 67 0.0234 173 -1.23 67
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.HHE. ML:1.7 0.0002375 1.06 AML other m 2023-03-23T08:11:39.20
IV.BSSO.HHN. ML:1.6 0.000186 0.56 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.GATE.HHE. ML:1.6 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
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download