Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 07-02-2023 and time 01:05:13 (UTC) in region 6 km NW San Gregorio Magno (SA)

A magnitude ML 0.9 earthquake occured in region: 6 km NW San Gregorio Magno (SA), on

  • 07-02-2023 01:05:13 (UTC)
  • 07-02-2023 02:05:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.7070, 15.3800 at 14 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
San Gregorio Magno SA 6 4286 4286
Colliano SA 8 3638 7924
Buccino SA 8 5047 12971
Palomonte SA 9 3985 16956
Ricigliano SA 10 1144 18100
Castelgrande PZ 10 943 19043
Valva SA 10 1643 20686
Romagnano al Monte SA 10 368 21054
Muro Lucano PZ 10 5497 26551
Laviano SA 11 1438 27989
Oliveto Citra SA 12 3802 31791
Santomenna SA 12 443 32234
Balvano PZ 13 1830 34064
Contursi Terme SA 13 3394 37458
Castelnuovo di Conza SA 13 619 38077
Pescopagano PZ 15 1910 39987
Salvitelle SA 15 560 40547
Bella PZ 15 5171 45718
Senerchia AV 15 842 46560
Sant'Andrea di Conza AV 15 1539 48099
Calabritto AV 16 2391 50490
Vietri di Potenza PZ 16 2832 53322
Auletta SA 17 2336 55658
Conza della Campania AV 17 1373 57031
Sicignano degli Alburni SA 17 3519 60550
Caposele AV 18 3483 64033
Caggiano SA 18 2765 66798
Baragiano PZ 18 2671 69469
San Fele PZ 19 3004 72473
Rapone PZ 19 990 73463
Pertosa SA 19 690 74153
Teora AV 19 1537 75690
Petina SA 19 1159 76849

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Battipaglia (50786 inhabitants)
37 Km W of Potenza (67122 inhabitants)
52 Km E of Salerno (135261 inhabitants)
54 Km E of Avellino (54857 inhabitants)
57 Km E of Cava de' Tirreni (53659 inhabitants)
69 Km SE of Benevento (60091 inhabitants)
72 Km E of Scafati (50787 inhabitants)
76 Km E of Castellammare di Stabia (66466 inhabitants)
76 Km SW of Cerignola (58396 inhabitants)
85 Km S of Foggia (151991 inhabitants)
86 Km E of Torre del Greco (86275 inhabitants)
87 Km E of Portici (55274 inhabitants)
88 Km E of Ercolano (53709 inhabitants)
89 Km E of Acerra (59573 inhabitants)
93 Km E of Afragola (65057 inhabitants)
94 Km E of Casoria (77642 inhabitants)
96 Km E of Napoli (974074 inhabitants)
96 Km SW of Andria (100440 inhabitants)
97 Km E of Caserta (76326 inhabitants)
100 Km W of Altamura (70396 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 0.9 2023-02-07
01:05:13		 40.7068 15.3795 15 2023-02-07
01:38:44		 Sala Sismica INGV-Roma 114196241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-07 01:05:13 ± 0.1
Latitude 40.7068 ± 0.0036
Longitude 15.3795 ± 0.0071
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 114196241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 509
Semi-minor axis of confidence ellipse (meter) 287
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 245
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.43347
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 15
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 114196241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-07 01:38:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MURB.HHZ. 2023-02-07T01:06:25.73 3.0 undecidable manual Sg -0.04 0
IV.ACER.HHZ. 2023-02-07T01:05:28.89 0.3 undecidable manual S 79 0.4335 95 -0.26 68
5H.FR02.EHZ. 2023-02-07T01:05:26.83 0.3 undecidable manual S 315 0.3363 98 0.54 64
IV.CAFE.HHZ. 2023-02-07T01:05:26.10 0.3 undecidable manual S 341 0.3390 98 -0.25 70
IX.MNT3.HNZ.02 2023-02-07T01:05:25.65 0.3 undecidable manual S 295 0.3103 99 0.12 71
IV.SNAL.HHZ. 2023-02-07T01:05:24.38 0.3 undecidable manual S 330 0.2536 102 0.51 66
IV.CDRU.HHZ. 2023-02-07T01:05:23.31 0.3 undecidable manual S 195 0.2239 105 0.29 71
IX.SRN3.HNZ.02 2023-02-07T01:05:23.77 0.6 undecidable manual S 165 0.2284 104 0.63 43
IV.ACER.HHZ. 2023-02-07T01:05:22.52 0.1 undecidable manual P 79 0.4335 95 -0.14 94
IV.SGO.HHZ. 2023-02-07T01:05:21.37 0.3 undecidable manual S 201 0.1565 116 0.25 73
IV.MCRV.HHZ. 2023-02-07T01:05:21.29 0.3 undecidable manual S 295 0.1772 112 -0.39 70
5H.FR02.EHZ. 2023-02-07T01:05:21.08 0.3 undecidable manual P 315 0.3363 98 0.07 72
IV.CAFE.HHZ. 2023-02-07T01:05:20.99 0.1 undecidable manual P 341 0.3390 98 -0.05 98
IX.MNT3.HNZ.02 2023-02-07T01:05:20.22 0.6 undecidable manual P 295 0.3103 99 -0.35 46
IX.SRN3.HNZ.02 2023-02-07T01:05:19.38 0.3 undecidable manual P 165 0.2284 104 0.19 72
IV.SNAL.HHZ. 2023-02-07T01:05:19.35 0.1 undecidable manual P 330 0.2536 102 -0.26 95
IV.MRLC.HHE. 2023-02-07T01:05:19.75 0.3 undecidable manual S 59 0.0962 134 0.07 76
IX.SCL3.EHZ.02 2023-02-07T01:05:19.87 0.6 undecidable manual S 97 0.1007 133 0.11 50
IX.RDM3.HNZ.02 2023-02-07T01:05:19.37 0.3 undecidable manual P 35 0.2059 107 0.55 66
IX.CLT3.EHE.02 2023-02-07T01:05:18.99 0.1 undecidable manual P 5 0.1970 108 0.32 94
IX.COL3.HHZ.02 2023-02-07T01:05:18.60 0.3 undecidable manual S 242 0.0423 158 -0.17 74
IV.CDRU.HHZ. 2023-02-07T01:05:18.88 0.1 undecidable manual P 195 0.2239 105 -0.24 95
IX.SFL3.HNE.01 2023-02-07T01:05:18.59 0.6 undecidable manual P 61 0.1718 113 0.33 47
IX.SCL3.EHZ.02 2023-02-07T01:05:17.14 0.6 undecidable manual P 97 0.1007 133 -0.1 50
IV.SGO.HHZ. 2023-02-07T01:05:17.84 0.1 undecidable manual P 201 0.1565 116 -0.19 97
IV.MCRV.HHZ. 2023-02-07T01:05:17.88 0.1 undecidable manual P 295 0.1772 112 -0.47 92
IV.MRLC.HHE. 2023-02-07T01:05:16.95 0.1 undecidable manual P 59 0.0962 134 -0.24 97
IX.COL3.HHZ.02 2023-02-07T01:05:16.52 0.1 undecidable manual P 242 0.0423 158 -0.15 100
IV.PAOL.HHZ. 2023-02-07T01:05:14.98 3.0 undecidable manual S -0.02 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SGO.HHE. ML:1.5 0.000216 0.16 AML other m 2023-02-07T01:05:21.79
IV.SGO.HHN. ML:1.4 0.00017999999999999998 1.72 AML other m 2023-02-07T01:05:22.01
IV.MCRV.HHN. ML:1.3 0.0001374603 0.14 AML other m 2023-02-07T01:05:22.48
IV.MCRV.HHE. ML:1.2 0.00010117804999999999 0.1 AML other m 2023-02-07T01:05:22.08
IV.SNAL.HHE. ML:0.9 0.00004168424 0.18 AML other m 2023-02-07T01:05:25.59
IV.SNAL.HHN. ML:0.7 0.0000262281325 0.16 AML other m 2023-02-07T01:05:25.87
IV.SNAL.HNE. ML:0.9 0.00003990318 0.18 AML other m 2023-02-07T01:05:25.59
IV.SNAL.HNN. ML:0.7 0.000024229151499999996 0.1504 AML other m 2023-02-07T01:05:25.88
IV.CAFE.HHE. ML:0.9 0.000030353324999999998 0.24 AML other m 2023-02-07T01:05:27.45
IV.CAFE.HHN. ML:0.9 0.000029076735 0.2 AML other m 2023-02-07T01:05:29.17
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