Earthquake with magnitude of ML 2.9 on date 20-02-2023 and time 02:31:04 (Italy) in region Golfo di Policastro (Salerno, Potenza)

A magnitude ML 2.9 earthquake occured in region: Golfo di Policastro (Salerno, Potenza), on

  • 20-02-2023 01:31:04 (UTC)
  • 20-02-2023 02:31:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.9750, 15.6740 at 291 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Maratea PZ 5 5139 5139
Tortora CS 10 6187 11326
Trecchina PZ 11 2316 13642
Sapri SA 12 6770 20412
Praia a Mare CS 13 6725 27137
Rivello PZ 14 2767 29904
Aieta CS 14 823 30727
Nemoli PZ 15 1495 32222
Ispani SA 16 1026 33248
Torraca SA 16 1263 34511
Lauria PZ 16 12919 47430
Vibonati SA 16 3293 50723
San Nicola Arcella CS 18 1957 52680
Lagonegro PZ 18 5584 58264
Santa Marina SA 18 3243 61507
Tortorella SA 20 523 62030

Municipalities with at least 50000 inhabitants

An earthquake occurred to
75 Km S of Potenza (67122 inhabitants)
91 Km NW of Cosenza (67546 inhabitants)
92 Km SE of Battipaglia (50786 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
Bulletin
Rev1000
ML 2.9 2023-02-20
01:31:04
39.9747 15.6737 291 2024-03-01
17:18:00
Bollettino Sismico Italiano INGV 115838431
Reviewed
Rev100
ML 2.8 2023-02-20
01:31:05
39.9373 15.5258 289 2023-02-20
01:42:10
Sala Sismica INGV-Roma 114609321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-20 01:31:04 ± 0.23
Latitude 39.9747 ± 0.0171
Longitude 15.6737 ± 0.0329
Depth (km) 291 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 115838431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2876
Semi-minor axis of confidence ellipse (meter) 1478
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
Circular confidence region, given by single value of horizontal uncertainty (meter) 2880.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 61
Number of defining phases 61
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) 0.11062
Epicentral distance of station farthest from the epicenter (degree) 1.97041
Number of stations at which the event was observed 43
Number of stations from which data was used for origin computation 43
Magnitudes information

ML:2.9

Field Value
Value 2.9
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 115838431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-11-04 07:44:27

ML:2.8

Field Value
Value 2.8
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 114609321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-20 01:42:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2023-02-20T01:32:21.60 0.6 undecidable manual S 159 181.485 147 -0.44 31
IV.SELL.HHZ. 2023-02-20T01:32:16.80 0.6 undecidable manual S 143 137.0628 154 -0.5 37
IV.SERS.HHZ. 2023-02-20T01:32:16.90 0.6 undecidable manual S 140 135.5643 154 -0.27 39
IV.PIPA.HHZ. 2023-02-20T01:32:15.00 0.6 undecidable manual S 119 111.4995 158 -0.08 43
IV.CELI.HHZ. 2023-02-20T01:32:15.20 0.3 undecidable manual S 131 95.4378 161 1.32 42
IV.GIZZ.HHN. 2023-02-20T01:32:14.90 0.3 undecidable manual S 157 119.4915 157 -0.83 50
IV.SPS2.HHZ. 2023-02-20T01:32:13.70 0.6 undecidable manual S 143 94.7385 161 -0.13 43
XE.BIDON.HHZ. 2023-02-20T01:32:13.16 0.6 undecidable manual S 93 66.5778 167 1 34
IV.TDS.HHZ. 2023-02-20T01:32:13.17 0.6 undecidable manual S 121 66.4779 167 1.02 34
IV.CAR1.HHZ. 2023-02-20T01:32:12.90 0.6 undecidable manual S 150 92.241 162 -0.76 36
IV.MCEL.HHZ. 2023-02-20T01:32:12.00 0.6 undecidable manual S 16 40.3263 172 0.9 38
IV.CET2.HHZ. 2023-02-20T01:32:11.20 0.6 undecidable manual S 154 55.0005 169 -0.43 44
IV.MGR.HNZ. 2023-02-20T01:32:11.00 0.6 undecidable manual S 331 20.7681 176 0.35 48
XE.TNOVA.HNE. 2023-02-20T01:32:11.85 0.6 undecidable manual S 90 49.9167 170 0.42 45
IV.SALB.HHZ. 2023-02-20T01:32:11.60 0.6 undecidable manual S 100 58.1973 168 -0.17 46
MN.CUC.HHZ. 2023-02-20T01:32:10.00 0.6 undecidable manual S 80 12.2766 178 -0.54 46
XE.MORMA.HHE. 2023-02-20T01:32:10.21 0.6 undecidable manual S 114 27.9498 174 -0.57 44
IV.GRIS.EHZ. 2023-02-20T01:32:10.20 0.6 undecidable manual S 149 30.1476 174 -0.63 43
IV.MTTG.HHZ. 2023-02-20T01:31:52.41 0.3 undecidable manual P 179 218.7144 142 0.24 39
IV.MSRU.HHE. 2023-02-20T01:31:49.49 0.3 undecidable manual P 184 190.2651 146 -0.59 42
IV.PLAC.HHZ. 2023-02-20T01:31:49.40 0.1 undecidable manual P 159 181.485 147 -0.07 67
OT.CGL1.HHZ. 2023-02-20T01:31:48.64 0.1 undecidable manual P 64 172.8936 148 -0.26 68
IV.FERC.HHZ.00 2023-02-20T01:31:48.70 0.3 undecidable manual P 167 173.2932 148 -0.22 51
IV.SELL.HHZ. 2023-02-20T01:31:47.11 0.1 negative manual P 143 137.0628 154 0.37 76
IV.NOCI.HHZ. 2023-02-20T01:31:47.02 0.1 undecidable manual P 52 148.2405 152 -0.35 75
OT.OT15.EHZ. 2023-02-20T01:31:47.49 0.3 undecidable manual P 39 161.8158 150 -0.7 47
IV.SERS.HHZ. 2023-02-20T01:31:47.10 0.1 negative manual P 140 135.5643 154 0.44 75
IV.CAFE.HHN. 2023-02-20T01:31:46.26 0.1 undecidable manual P 343 122.4885 156 0.28 80
IV.CELI.HHZ. 2023-02-20T01:31:45.68 0.1 negative manual P 131 95.4378 161 0.92 67
IV.SNAL.HNE. 2023-02-20T01:31:45.55 0.1 undecidable manual P 340 112.4985 158 0.05 85
IV.AMUR.HHZ. 2023-02-20T01:31:45.92 0.1 undecidable manual P 37 129.87 155 -0.44 76
IV.SPS2.HHZ. 2023-02-20T01:31:45.34 0.1 undecidable manual P 143 94.7385 161 0.61 77
IV.GIZZ.HHN. 2023-02-20T01:31:45.60 0.3 undecidable manual P 157 119.4915 157 -0.23 61
IV.MRVN.HHZ. 2023-02-20T01:31:45.57 0.1 undecidable manual P 20 128.2716 155 -0.7 70
IV.PIPA.HHZ. 2023-02-20T01:31:45.69 0.1 negative manual P 119 111.4995 158 0.24 82
GE.MATE.HHN. 2023-02-20T01:31:45.11 0.1 undecidable manual P 49 114.8961 158 -0.5 77
IV.TDS.HHZ. 2023-02-20T01:31:44.49 0.1 undecidable manual P 121 66.4779 167 0.73 78
IV.ORI.HHZ. 2023-02-20T01:31:44.03 0.3 undecidable manual P 82 66.5778 167 0.26 67
IX.COL3.HHE.02 2023-02-20T01:31:44.43 0.3 undecidable manual P 340 84.1491 163 0.09 67
IV.MCRV.HHN. 2023-02-20T01:31:44.82 0.3 undecidable manual P 335 99.3228 161 -0.1 65
IV.SGO.HHE. 2023-02-20T01:31:44.13 0.1 undecidable manual P 335 71.9724 166 0.2 90
IV.CAR1.HHZ. 2023-02-20T01:31:44.47 0.3 undecidable manual P 150 92.241 162 -0.17 65
IV.MIGL.HHZ. 2023-02-20T01:31:44.58 0.3 undecidable manual P 43 95.3379 161 -0.18 65
XE.TNOVA.HNE. 2023-02-20T01:31:43.46 0.1 undecidable manual P 90 49.9167 170 0.11 95
IV.SALB.HHZ. 2023-02-20T01:31:43.44 0.1 undecidable manual P 100 58.1973 168 -0.1 94
IV.CMPR.HNE. 2023-02-20T01:31:43.26 0.3 undecidable manual P 321 49.4172 170 -0.08 72
IV.CET2.HHZ. 2023-02-20T01:31:43.23 0.1 undecidable manual P 154 55.0005 169 -0.23 92
IV.MTSN.HNN. 2023-02-20T01:31:43.51 0.3 undecidable manual P 12 33.0447 173 0.47 68
XE.FRASC.HNE. 2023-02-20T01:31:43.91 0.3 undecidable manual P 107 52.6029 169 0.5 65
XE.BIDON.HHZ. 2023-02-20T01:31:43.79 0.1 undecidable manual P 93 66.5778 167 0.02 94
IV.MCEL.HHZ. 2023-02-20T01:31:43.62 0.1 negative manual P 16 40.3263 172 0.46 90
IV.BULG.HHZ. 2023-02-20T01:31:43.06 0.1 undecidable manual P 295 27.6501 174 0.09 99
IX.SRN3.HNE.02 2023-02-20T01:31:43.82 0.3 undecidable manual P 342 59.5959 168 0.24 68
IV.CDRU.HHZ. 2023-02-20T01:31:43.65 0.1 undecidable manual P 331 65.0904 167 -0.08 93
IV.PTRP.HHZ. 2023-02-20T01:31:43.84 0.3 undecidable manual P 28 68.9754 166 0 70
IV.SCHR.EHZ. 2023-02-20T01:31:43.28 0.1 negative manual P 54 42.2244 171 0.09 97
MN.CUC.HHZ. 2023-02-20T01:31:42.51 0.1 undecidable manual P 80 12.2766 178 -0.32 97
IV.GRIS.EHZ. 2023-02-20T01:31:42.48 0.3 undecidable manual P 149 30.1476 174 -0.52 67
XE.MORMA.HHE. 2023-02-20T01:31:42.56 0.1 undecidable manual P 114 27.9498 174 -0.41 93
IV.MGR.HNZ. 2023-02-20T01:31:42.78 0.1 negative manual P 331 20.7681 176 -0.12 100
IV.SIRI.HNE. 2023-02-20T01:31:42.80 0.6 undecidable manual P 35 28.2495 174 -0.18 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NOCI.HHN. ML:2.5 0.00003655 1.04 AML other m 2023-02-20T01:31:47.41
IV.NOCI.HHE. ML:2.5 0.000028999999999999997 1.4 AML other m 2023-02-20T01:31:48.97
IV.GRIS.EHE. ML:2.6 0.000047850000000000004 0.42 AML other m 2023-02-20T01:32:12.23
IV.CET2.HHE. ML:3.1 0.000156 0.7 AML other m 2023-02-20T01:32:12.04
IV.CET2.HHN. ML:3.3 0.0002655 0.6 AML other m 2023-02-20T01:32:12.78
IV.GRIS.EHN. ML:2.6 0.000051200000000000004 0.58 AML other m 2023-02-20T01:32:13.04
IV.CAR1.HHN. ML:3.1 0.000165 0.34 AML other m 2023-02-20T01:32:13.24
IV.CAR1.HNN. ML:3.1 0.0001568 0.38 AML other m 2023-02-20T01:32:13.24
IV.SALB.HHN. ML:2.6 0.000047850000000000004 1.52 AML other m 2023-02-20T01:32:14.02
IV.SALB.HHE. ML:2.6 0.0000434 0.64 AML other m 2023-02-20T01:32:15.24
IV.CAR1.HHE. ML:3.1 0.00016499999999999997 0.42 AML other m 2023-02-20T01:32:15.60
IV.CAR1.HNE. ML:3.1 0.0001535 0.4 AML other m 2023-02-20T01:32:15.59
IV.CELI.HHE. ML:2.6 0.00004385 0.96 AML other m 2023-02-20T01:32:15.34
IV.ORI.HHE. ML:2.8 0.00008735 1.68 AML other m 2023-02-20T01:32:15.90
IV.SPS2.HHE. ML:2.7 0.00006555 0.36 AML other m 2023-02-20T01:32:16.44
IV.SPS2.HHN. ML:2.8 0.0000771 0.6 AML other m 2023-02-20T01:32:16.75
IV.CELI.HHN. ML:2.7 0.0000592 0.94 AML other m 2023-02-20T01:32:16.14
IV.ORI.HHN. ML:2.9 0.00008929999999999999 0.76 AML other m 2023-02-20T01:32:18.23
IV.PIPA.HHN. ML:2.9 0.0000828 0.48 AML other m 2023-02-20T01:32:18.25
IV.PIPA.HHE. ML:2.9 0.0000844 1.1 AML other m 2023-02-20T01:32:18.34
IV.SELL.HHE. ML:2.8 0.000066 0.36 AML other m 2023-02-20T01:32:19.51
IV.SELL.HNE. ML:3.3 0.0002045 0.42 AML other m 2023-02-20T01:32:19.51
IV.SERS.HHE. ML:2.8 0.00006165 0.56 AML other m 2023-02-20T01:32:19.74
IV.PLAC.HHN. ML:3.2 0.0001535 1.06 AML other m 2023-02-20T01:32:23.28
IV.PLAC.HNN. ML:3.3 0.0001645 0.4 AML other m 2023-02-20T01:32:23.29
IV.PLAC.HNE. ML:3.3 0.000191 0.76 AML other m 2023-02-20T01:32:23.77
IV.PLAC.HHE. ML:3.3 0.00017099999999999998 0.78 AML other m 2023-02-20T01:32:23.77
IV.SERS.HHN. ML:2.8 0.000061 1.48 AML other m 2023-02-20T01:32:23.96
IV.SELL.HNN. ML:3.1 0.0001409 0.46 AML other m 2023-02-20T01:32:24.30
IV.SELL.HHN. ML:2.5 0.000035000000000000004 1.32 AML other m 2023-02-20T01:32:24.98
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
Waveforms Seismic signals in miniseed + resp format Download