Earthquake with magnitude of Md 2.1 on date 11-03-2016 and time 10:25:08 (Italy) in region 3 km SE San Sebastiano al Vesuvio (NA)

A magnitude Md 2.1 earthquake occured in region: 3 km SE San Sebastiano al Vesuvio (NA), on

  • 11-03-2016 09:25:08 (UTC)
  • 11-03-2016 10:25:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.82, 14.4 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
San Sebastiano al Vesuvio NA 3 9196 9196
Massa di Somma NA 3 5444 14640
Portici NA 4 55274 69914
Pollena Trocchia NA 4 13562 83476
Ercolano NA 5 53709 137185
Torre del Greco NA 5 86275 223460
Sant'Anastasia NA 5 27671 251131
Cercola NA 5 18267 269398
San Giorgio a Cremano NA 5 45557 314955
Somma Vesuviana NA 6 35233 350188
Trecase NA 7 9097 359285
Boscotrecase NA 7 10363 369648
Ottaviano NA 8 23860 393508
Volla NA 8 23755 417263
Torre Annunziata NA 8 42789 460052
Boscoreale NA 8 28072 488124
Terzigno NA 9 18968 507092
San Giuseppe Vesuviano NA 9 30657 537749
Pomigliano d'Arco NA 10 39922 577671
Castello di Cisterna NA 11 7869 585540
Casalnuovo di Napoli NA 11 49855 635395
Brusciano NA 11 16466 651861
Pompei NA 12 25358 677219
San Gennaro Vesuviano NA 12 11966 689185
Mariglianella NA 12 7787 696972
Poggiomarino NA 12 21976 718948
Napoli NA 13 974074 1693022
Marigliano NA 13 30157 1723179
Scisciano NA 13 5994 1729173
Casoria NA 13 77642 1806815
San Vitaliano NA 13 6461 1813276
Afragola NA 14 65057 1878333
Casavatore NA 14 18661 1896994
Scafati SA 14 50787 1947781
Saviano NA 14 15982 1963763
Acerra NA 14 59573 2023336
Palma Campania NA 14 15978 2039314
Arzano NA 15 34886 2074200
Santa Maria la Carità NA 15 11722 2085922
Striano NA 15 8397 2094319
Castellammare di Stabia NA 16 66466 2160785
Nola NA 16 34431 2195216
Carbonara di Nola NA 16 2429 2197645
San Paolo Bel Sito NA 16 3513 2201158
Cardito NA 16 22755 2223913
Sant'Antonio Abate NA 17 19743 2243656
Angri SA 17 34002 2277658
San Marzano sul Sarno SA 17 10442 2288100
Frattamaggiore NA 17 30329 2318429
Liveri NA 17 1607 2320036
Caivano NA 17 37879 2357915
Cimitile NA 17 7280 2365195
Domicella AV 17 1862 2367057
Grumo Nevano NA 17 18061 2385118
Crispano NA 17 12354 2397472
San Valentino Torio SA 18 10947 2408419
Vico Equense NA 18 20969 2429388
Casandrino NA 18 14336 2443724
Marzano di Nola AV 18 1727 2445451
Lettere NA 18 6188 2451639
Gragnano NA 18 29136 2480775
Casola di Napoli NA 18 3898 2484673
Melito di Napoli NA 18 37826 2522499
Casamarciano NA 18 3289 2525788
Frattaminore NA 18 16208 2541996
Sant'Antimo NA 18 33905 2575901
Camposano NA 19 5333 2581234
Sarno SA 19 31529 2612763
Mugnano di Napoli NA 19 34828 2647591
Pimonte NA 19 5980 2653571
Orta di Atella CE 19 27191 2680762
Sant'Egidio del Monte Albino SA 19 8909 2689671
Marano di Napoli NA 19 59874 2749545
Pago del Vallo di Lauro AV 19 1830 2751375
Comiziano NA 20 1814 2753189
Sant'Arpino CE 20 14307 2767496
Corbara SA 20 2545 2770041
Meta NA 20 8015 2778056
Visciano NA 20 4454 2782510
Calvizzano NA 20 12329 2794839

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km E of Portici (55274 inhabitants)
5 Km E of Ercolano (53709 inhabitants)
5 Km NE of Torre del Greco (86275 inhabitants)
13 Km E of Napoli (974074 inhabitants)
13 Km SE of Casoria (77642 inhabitants)
14 Km SE of Afragola (65057 inhabitants)
14 Km NW of Scafati (50787 inhabitants)
14 Km S of Acerra (59573 inhabitants)
16 Km NW of Castellammare di Stabia (66466 inhabitants)
19 Km E of Marano di Napoli (59874 inhabitants)
20 Km SE of Giugliano in Campania (122974 inhabitants)
23 Km SE of Aversa (53047 inhabitants)
26 Km E of Pozzuoli (81661 inhabitants)
29 Km S of Caserta (76326 inhabitants)
29 Km W of Cava de' Tirreni (53659 inhabitants)
34 Km W of Salerno (135261 inhabitants)
35 Km W of Avellino (54857 inhabitants)
47 Km SW of Benevento (60091 inhabitants)
55 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.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006 *

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. 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 2.1 2016-03-11
09:25:08
40.82 14.4 1 2016-05-17
13:18:00
Bollettino Sismico Italiano INGV 25124671
Rev 200 Md 2.1 2016-03-11
09:25:08
40.81 14.42 1 2016-05-16
07:49:11
Sala Operativa INGV-OV (Napoli) 23789661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-03-11 09:25:08 ± 0.2
Latitude 40.82 ± 0.00
Longitude 14.40 ± 0.02
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 25124671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1290
Semi-minor axis of confidence ellipse (meter) 330
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 278
Circular confidence region, given by single value of horizontal uncertainty (meter) 1290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 295
Number of associated phases, regardless of their use for origin computation 4
Number of defining phases 4
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.04
Epicentral distance of station closest to the epicenter (degree) 0.01079
Epicentral distance of station farthest from the epicenter (degree) 0.02608
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty 0.1
Num. used stations 4
Type of magnitude Md
Reference to an origin 25124671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-05-16 07:48:03

Md:2.1

Field Value
Value 2.1
Uncertainty 0
Num. used stations
Type of magnitude Md
Reference to an origin 23789661
Agency INGV
Autore Sala Operativa INGV-OV (Napoli)
Time of creation (UTC) 2016-03-11 12:06:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VBKN.HHN. 2016-03-11T09:25:09.60 0.1 positive manual P 71 0.0261 109 0.03 99
IV.VVDG.HHE. 2016-03-11T09:25:09.52 0.3 undecidable manual P 54 0.0243 110 -0.02 75
IV.VARP.HHN. 2016-03-11T09:25:09.28 0.1 negative manual P 119 0.0108 130 0.01 100
IV.CRTO.HHE. 2016-03-11T09:25:09.40 0.1 negative manual P 91 0.0189 116 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVDG.HHE. Md:2.2 34 END duration s
IV.CRTO.HHE. Md:2.2 36 END duration s
IV.VARP.HHN. Md:2 28 END duration s
IV.VBKN.HHN. 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://cnt.rm.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