Earthquake with magnitude of ML 1.3 on date 22-12-2021 and time 02:33:06 (Italy) in region 2 km E Sapri (SA)

A magnitude ML 1.3 earthquake occured in region: 2 km E Sapri (SA), on

  • 22-12-2021 01:33:06 (UTC)
  • 22-12-2021 02:33:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.0680, 15.6490 at 10 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
Sapri SA 2 6770 6770
Torraca SA 5 1263 8033
Vibonati SA 7 3293 11326
Ispani SA 8 1026 12352
Tortorella SA 9 523 12875
Rivello PZ 9 2767 15642
Casaletto Spartano SA 10 1420 17062
Santa Marina SA 10 3243 20305
Maratea PZ 10 5139 25444
Morigerati SA 11 665 26109
Lagonegro PZ 12 5584 31693
Trecchina PZ 12 2316 34009
Nemoli PZ 13 1495 35504
Caselle in Pittari SA 15 1956 37460
Lauria PZ 16 12919 50379
Torre Orsaia SA 17 2118 52497
Casalbuono SA 17 1194 53691
San Giovanni a Piro SA 17 3780 57471
Roccagloriosa SA 18 1722 59193
Tortora CS 19 6187 65380

Municipalities with at least 50000 inhabitants

An earthquake occurred to
65 Km S of Potenza (67122 inhabitants)
82 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 1.3 2021-12-22
01:33:06
40.0683 15.6492 11 2022-03-30
13:04:40
Bollettino Sismico Italiano INGV 101674941
Reviewed
Rev100
ML 1.2 2021-12-22
01:33:06
40.0402 15.6603 1 2021-12-22
01:42:08
Sala Sismica INGV-Roma 98802411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-22 01:33:06 ± 0.12
Latitude 40.0683 ± 0.0135
Longitude 15.6492 ± 0.0129
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 101674941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1653
Semi-minor axis of confidence ellipse (meter) 758
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 329
Circular confidence region, given by single value of horizontal uncertainty (meter) 1650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.10072
Epicentral distance of station farthest from the epicenter (degree) 0.58816
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 98802411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-22 01:42:08

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 101674941
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-04 15:52:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GRIS.EHZ. 2021-12-22T01:33:19.61 0.6 undecidable manual S 154 0.3633 50 -0.09 47
IV.SCHR.EHN. 2021-12-22T01:33:19.28 0.6 undecidable manual S 68 0.3516 50 -0.07 47
IV.MMN.HHE. 2021-12-22T01:33:18.57 0.6 undecidable manual S 124 0.3157 50 0.27 46
IV.CET2.HHZ. 2021-12-22T01:33:17.94 0.3 undecidable manual P 156 0.5882 50 0.03 69
IV.MTSN.HHZ. 2021-12-22T01:33:15.78 0.6 undecidable manual S 22 0.2131 50 0.53 40
IV.BULG.HHZ. 2021-12-22T01:33:15.89 0.6 undecidable manual S 273 0.2077 50 0.79 39
IV.MMN.HHE. 2021-12-22T01:33:14.11 0.3 undecidable manual P 124 0.3157 50 0.86 56
IV.SIRI.HHZ. 2021-12-22T01:33:14.91 0.6 undecidable manual S 56 0.2023 50 -0.02 45
IV.GRIS.EHZ. 2021-12-22T01:33:13.41 0.3 undecidable manual P 154 0.3633 50 -0.65 63
IV.SCHR.EHN. 2021-12-22T01:33:13.54 0.3 undecidable manual P 68 0.3516 50 -0.32 69
IV.BULG.HHZ. 2021-12-22T01:33:11.37 0.1 undecidable manual P 273 0.2077 50 -0.04 98
IV.MGR.HHZ. 2021-12-22T01:33:11.23 0.6 undecidable manual S 314 0.1007 133 -0.45 50
IV.MTSN.HHZ. 2021-12-22T01:33:11.64 0.3 undecidable manual P 22 0.2131 50 0.15 69
IV.SIRI.HHZ. 2021-12-22T01:33:11.21 0.1 undecidable manual P 56 0.2023 50 -0.09 95
IV.MGR.HHZ. 2021-12-22T01:33:09.28 0.1 undecidable manual P 314 0.1007 133 -0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MGR.HHE. ML:1.4 0.0003135 0.18 AML other m 2021-12-22T01:33:11.45
IV.MGR.HNE. ML:1.3 0.0002525 0.12 AML other m 2021-12-22T01:33:11.42
IV.MGR.HNN. ML:1.4 0.0003115 0.14 AML other m 2021-12-22T01:33:11.46
IV.MGR.HHN. ML:1.3 0.000257 0.14 AML other m 2021-12-22T01:33:11.39
IV.SIRI.HHE. ML:0.9 0.00005435 1.2 AML other m 2021-12-22T01:33:16.24
IV.SIRI.HHN. ML:1.1 0.0000748 0.28 AML other m 2021-12-22T01:33:17.06
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, http://terremoti.ingv.it/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