Earthquake with magnitude of Md 2.1 on date 03-12-2021 and time 12:10:59 (UTC) in region Campi Flegrei

A magnitude Md 2.1 earthquake occured in region: Campi Flegrei, on

  • 03-12-2021 12:10:59 (UTC)
  • 03-12-2021 13:10:59 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.8250, 14.1270 at 2 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
Pozzuoli NA 4 81661 81661
Bacoli NA 5 26560 108221
Quarto NA 6 40930 149151
Monte di Procida NA 7 12886 162037
Marano di Napoli NA 10 59874 221911
Napoli NA 11 974074 1195985
Procida NA 11 10530 1206515
Calvizzano NA 11 12329 1218844
Qualiano NA 11 25702 1244546
Mugnano di Napoli NA 12 34828 1279374
Villaricca NA 12 31122 1310496
Giugliano in Campania NA 13 122974 1433470
Melito di Napoli NA 14 37826 1471296
Parete CE 15 11442 1482738
Casavatore NA 15 18661 1501399
Sant'Antimo NA 15 33905 1535304
Arzano NA 15 34886 1570190
Casandrino NA 16 14336 1584526
Casoria NA 17 77642 1662168
Grumo Nevano NA 17 18061 1680229
Lusciano CE 17 15362 1695591
Trentola-Ducenta CE 17 19429 1715020
San Giorgio a Cremano NA 18 45557 1760577
Cesa CE 18 8841 1769418
Aversa CE 18 53047 1822465
Frattamaggiore NA 18 30329 1852794
Ischia NA 18 19915 1872709
Sant'Arpino CE 18 14307 1887016
Casapesenna CE 18 6987 1894003
Ercolano NA 19 53709 1947712
San Marcellino CE 19 14155 1961867
Afragola NA 19 65057 2026924
Succivo CE 19 8457 2035381
Frattaminore NA 19 16208 2051589
Portici NA 19 55274 2106863
Volla NA 20 23755 2130618
San Cipriano d'Aversa CE 20 13653 2144271
Crispano NA 20 12354 2156625
Frignano CE 20 9008 2165633
Gricignano di Aversa CE 20 11881 2177514
Villa di Briano CE 20 7087 2184601
Cardito NA 20 22755 2207356
Carinaro CE 20 7181 2214537
Orta di Atella CE 20 27191 2241728

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km SE of Pozzuoli (81661 inhabitants)
10 Km SW of Marano di Napoli (59874 inhabitants)
11 Km W of Napoli (974074 inhabitants)
13 Km SW of Giugliano in Campania (122974 inhabitants)
17 Km SW of Casoria (77642 inhabitants)
18 Km SW of Aversa (53047 inhabitants)
19 Km W of Ercolano (53709 inhabitants)
19 Km SW of Afragola (65057 inhabitants)
19 Km W of Portici (55274 inhabitants)
21 Km W of Torre del Greco (86275 inhabitants)
25 Km SW of Acerra (59573 inhabitants)
33 Km SW of Caserta (76326 inhabitants)
33 Km W of Castellammare di Stabia (66466 inhabitants)
35 Km W of Scafati (50787 inhabitants)
51 Km W of Cava de' Tirreni (53659 inhabitants)
56 Km W of Salerno (135261 inhabitants)
57 Km W of Avellino (54857 inhabitants)
65 Km SW of Benevento (60091 inhabitants)
76 Km W 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
Md 2.1 2021-12-03
12:10:59
40.8247 14.127 2 2022-03-30
13:04:32
Bollettino Sismico Italiano INGV 100275441
Reviewed
Rev200
Md 2.0 2021-12-03
12:10:59
40.8297 14.1438 2 2022-01-28
15:44:16
Sala Operativa INGV-OV (Napoli) 98092121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-03 12:10:59 ± 0.19
Latitude 40.8247 ± 0.0027
Longitude 14.1270 ± 0.0036
Depth (km) 2 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100275441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 319
Semi-minor axis of confidence ellipse (meter) 228
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 349
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.05486
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 98092121
Agency INGV
Autore Sala Operativa INGV-OV (Napoli)
Time of creation (UTC) 2021-12-03 12:27:00

Md:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 9
Type of magnitude Md
Reference to an origin 100275441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-28 15:44:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CDRU.HHZ. 2021-12-03T12:11:15.48 3.0 undecidable manual P -0.01 0
IV.CBAC.EHE. 2021-12-03T12:11:02.03 0.3 undecidable manual P 249 0.0378 112 0.2 72
IV.CMIS.HHZ. 2021-12-03T12:11:02.45 0.3 undecidable manual P 212 0.0549 106 -0.36 69
IV.CSFT.HHZ. 2021-12-03T12:11:01.44 0.6 undecidable manual S 65 0.0108 146 0.05 50
IV.CFMN.HHZ. 2021-12-03T12:11:01.21 0.3 undecidable manual P 287 0.0288 118 -0.15 73
IV.CSTH.HNE. 2021-12-03T12:11:01.52 0.6 undecidable manual S 74 0.0171 131 -0.37 46
IV.COLB.HHZ. 2021-12-03T12:11:01.60 0.6 undecidable manual S 113 0.0144 137 -0.05 50
IV.CPIS.HHZ. 2021-12-03T12:11:01.41 0.6 undecidable manual S 73 0.0162 134 -0.34 47
IV.CAAM.HHN. 2021-12-03T12:11:01.52 0.6 undecidable manual S 115 0.0117 143 0.08 49
IV.CAAM.HHN. 2021-12-03T12:11:00.71 0.1 undecidable manual P 115 0.0117 143 0.17 97
IV.CSFT.HHZ. 2021-12-03T12:11:00.68 0.1 negative manual P 65 0.0108 146 0.17 97
IV.CSTH.HNE. 2021-12-03T12:11:00.78 0.1 undecidable manual P 74 0.0171 131 -0.01 100
IV.COLB.HHZ. 2021-12-03T12:11:00.75 0.1 undecidable manual P 113 0.0144 137 0.09 99
IV.CPIS.HHZ. 2021-12-03T12:11:00.73 0.1 undecidable manual P 73 0.0162 134 0.01 100
IV.CSOB.HNZ. 2021-12-03T12:11:00.70 0.1 undecidable manual P 82 0.0126 140 0.1 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSFT.HHZ. Md:2.0 28 END duration s
IV.COLB.HHZ. Md:2.0 27 END duration s
IV.CPIS.HHZ. Md:1.4 13 END duration s
IV.CFMN.HHZ. Md:2.2 32 END duration s
IV.CMIS.HHZ. Md:2.3 38 END duration s
IV.CAAM.HHN. Md:2.0 28 END duration s
IV.CBAC.EHE. Md:2.4 41 END duration s
IV.CSOB.HNZ. Md:2.1 30 END duration s
IV.CSTH.HNE. Md:1.8 21 END duration s
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
Waveforms Seismic signals in miniseed + resp format Download