Earthquake with magnitude of Md 2.2 on date 02-12-2018 and time 20:09:18 (Italy) in region 4 km SE Massa di Somma (NA)

A magnitude Md 2.2 earthquake occured in region: 4 km SE Massa di Somma (NA), on

  • 02-12-2018 19:09:18 (UTC)
  • 02-12-2018 20:09:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.82, 14.42 at 1 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
Massa di Somma NA 5 5444 5444
San Sebastiano al Vesuvio NA 5 9196 14640
Sant'Anastasia NA 5 27671 42311
Pollena Trocchia NA 5 13562 55873
Portici NA 5 55274 111147
Somma Vesuviana NA 6 35233 146380
Torre del Greco NA 6 86275 232655
Trecase NA 6 9097 241752
Ottaviano NA 6 23860 265612
Boscotrecase NA 6 10363 275975
Ercolano NA 6 53709 329684
Cercola NA 7 18267 347951
Terzigno NA 7 18968 366919
Boscoreale NA 7 28072 394991
San Giorgio a Cremano NA 7 45557 440548
Torre Annunziata NA 7 42789 483337
San Giuseppe Vesuviano NA 8 30657 513994
Volla NA 9 23755 537749
Pomigliano d'Arco NA 10 39922 577671
San Gennaro Vesuviano NA 10 11966 589637
Poggiomarino NA 11 21976 611613
Pompei NA 11 25358 636971
Castello di Cisterna NA 11 7869 644840
Brusciano NA 11 16466 661306
Casalnuovo di Napoli NA 12 49855 711161
Mariglianella NA 12 7787 718948
Scisciano NA 12 5994 724942
Marigliano NA 12 30157 755099
Scafati SA 12 50787 805886
Saviano NA 13 15982 821868
San Vitaliano NA 13 6461 828329
Palma Campania NA 13 15978 844307
Striano NA 13 8397 852704
Santa Maria la Carità NA 14 11722 864426
Casoria NA 14 77642 942068
Napoli NA 14 974074 1916142
Afragola NA 15 65057 1981199
Acerra NA 15 59573 2040772
Carbonara di Nola NA 15 2429 2043201
Nola NA 15 34431 2077632
San Paolo Bel Sito NA 15 3513 2081145
Casavatore NA 15 18661 2099806
Castellammare di Stabia NA 15 66466 2166272
San Marzano sul Sarno SA 15 10442 2176714
Angri SA 15 34002 2210716
Sant'Antonio Abate NA 15 19743 2230459
Liveri NA 16 1607 2232066
Domicella AV 16 1862 2233928
San Valentino Torio SA 16 10947 2244875
Arzano NA 16 34886 2279761
Cimitile NA 16 7280 2287041
Marzano di Nola AV 16 1727 2288768
Lettere NA 17 6188 2294956
Casola di Napoli NA 17 3898 2298854
Gragnano NA 17 29136 2327990
Sarno SA 17 31529 2359519
Casamarciano NA 17 3289 2362808
Cardito NA 17 22755 2385563
Vico Equense NA 17 20969 2406532
Camposano NA 18 5333 2411865
Pago del Vallo di Lauro AV 18 1830 2413695
Sant'Egidio del Monte Albino SA 18 8909 2422604
Caivano NA 18 37879 2460483
Pimonte NA 18 5980 2466463
Visciano NA 18 4454 2470917
Frattamaggiore NA 18 30329 2501246
Comiziano NA 18 1814 2503060
Corbara SA 18 2545 2505605
Crispano NA 19 12354 2517959
Grumo Nevano NA 19 18061 2536020
Casandrino NA 19 14336 2550356
Cicciano NA 19 12906 2563262
Pagani SA 19 35834 2599096
Lauro AV 19 3509 2602605
Tufino NA 19 3776 2606381
Melito di Napoli NA 19 37826 2644207
Frattaminore NA 20 16208 2660415
Taurano AV 20 1546 2661961
Meta NA 20 8015 2669976
Sant'Antimo NA 20 33905 2703881
Quindici AV 20 1938 2705819

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km E of Portici (55274 inhabitants)
6 Km NE of Torre del Greco (86275 inhabitants)
6 Km E of Ercolano (53709 inhabitants)
12 Km NW of Scafati (50787 inhabitants)
14 Km E of Napoli (974074 inhabitants)
14 Km SE of Casoria (77642 inhabitants)
15 Km S of Acerra (59573 inhabitants)
15 Km SE of Afragola (65057 inhabitants)
15 Km NW of Castellammare di Stabia (66466 inhabitants)
21 Km E of Marano di Napoli (59874 inhabitants)
22 Km SE of Giugliano in Campania (122974 inhabitants)
25 Km SE of Aversa (53047 inhabitants)
28 Km NW of Cava de' Tirreni (53659 inhabitants)
28 Km E of Pozzuoli (81661 inhabitants)
29 Km S of Caserta (76326 inhabitants)
33 Km NW of Salerno (135261 inhabitants)
33 Km W of Avellino (54857 inhabitants)
46 Km SW of Benevento (60091 inhabitants)
53 Km W of Battipaglia (50786 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire *

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 Md 2.2 2018-12-02
19:09:18
40.82 14.42 1 2019-06-04
09:16:13
Bollettino Sismico Italiano INGV 67744291
Rev 200 Md 2.3 2018-12-02
19:09:18
40.82 14.43 1 2019-04-19
14:01:44
Sala Operativa INGV-OV (Napoli) 63588791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-02 19:09:18 ± 0.21
Latitude 40.82 ± 0.00
Longitude 14.42 ± 0.00
Depth (km) 1 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 67744291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 159
Semi-minor axis of confidence ellipse (meter) 64
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 272
Circular confidence region, given by single value of horizontal uncertainty (meter) 160
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.01799
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty 0.1
Num. used stations 4
Type of magnitude Md
Reference to an origin 67744291
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-04-19 14:01:19

Md:2.3

Field Value
Value 2.3
Uncertainty 0
Num. used stations
Type of magnitude Md
Reference to an origin 63588791
Agency INGV
Autore Sala Operativa INGV-OV (Napoli)
Time of creation (UTC) 2018-12-02 19:41:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CPGN.EHZ. 2018-12-02T19:10:22.01 3.0 undecidable manual Sg 1.99 0
IV.EL6.EHZ. 2018-12-02T19:10:03.42 3.0 undecidable manual Sn -2.03 0
IV.FOSV.EHZ. 2018-12-02T19:09:41.54 3.0 undecidable manual Pg 3.06 0
IV.MTRA.EHZ. 2018-12-02T19:09:30.11 3.0 undecidable manual P -0.01 0
IV.VBKN.HHZ. 2018-12-02T19:09:20.35 0.3 undecidable manual S 44 0.0117 136 0.23 72
IV.VTIR.HHZ. 2018-12-02T19:09:20.43 0.3 undecidable manual S 167 0.0162 127 -0.06 74
IV.VVDG.HHE. 2018-12-02T19:09:20.09 0.3 undecidable manual S 13 0.0144 130 -0.25 71
IV.OVO.HHZ. 2018-12-02T19:09:20.70 0.3 undecidable manual S 289 0.018 123 0.03 75
IV.OVO.HHZ. 2018-12-02T19:09:19.71 0.1 undecidable manual P 289 0.018 123 0.06 99
IV.VBKN.HHZ. 2018-12-02T19:09:19.40 0.1 positive manual P 44 0.0117 136 0.05 99
IV.VTIR.HHZ. 2018-12-02T19:09:19.54 0.1 positive manual P 167 0.0162 127 -0.01 100
IV.VVDG.HHE. 2018-12-02T19:09:19.42 0.1 positive manual P 13 0.0144 130 -0.05 99
IV.VIVA.HHZ. 2018-12-02T19:09:18.44 3.0 negative manual P -0.03 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VBKN.HHZ. Md:2.1 32 END duration s
IV.VTIR.HHZ. Md:2.3 39 END duration s
IV.OVO.HHZ. Md:2.3 39 END duration s
IV.VVDG.HHE. Md:2.1 30 END duration s
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol 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 full SEED format Download