Earthquake with magnitude of Md 2.2 on date 05-05-2015 and time 12:30:25 (Italy) in region 2 km NE Boscoreale (NA)

A magnitude Md 2.2 earthquake occured in region: 2 km NE Boscoreale (NA), on

  • 05-05-2015 10:30:25 (UTC)
  • 05-05-2015 12:30:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.79, 14.49 at 0 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
Boscoreale NA 2 28072 28072
Terzigno NA 3 18968 47040
Boscotrecase NA 3 10363 57403
Pompei NA 4 25358 82761
Torre Annunziata NA 5 42789 125550
Poggiomarino NA 5 21976 147526
Trecase NA 5 9097 156623
Scafati SA 5 50787 207410
San Giuseppe Vesuviano NA 6 30657 238067
Ottaviano NA 7 23860 261927
Santa Maria la Carità NA 7 11722 273649
Striano NA 8 8397 282046
Angri SA 8 34002 316048
Sant'Antonio Abate NA 8 19743 335791
San Marzano sul Sarno SA 8 10442 346233
San Gennaro Vesuviano NA 9 11966 358199
San Valentino Torio SA 9 10947 369146
Castellammare di Stabia NA 10 66466 435612
Lettere NA 10 6188 441800
Somma Vesuviana NA 10 35233 477033
Torre del Greco NA 10 86275 563308
Casola di Napoli NA 11 3898 567206
Sant'Egidio del Monte Albino SA 11 8909 576115
Palma Campania NA 11 15978 592093
Gragnano NA 11 29136 621229
Corbara SA 11 2545 623774
Sarno SA 11 31529 655303
San Sebastiano al Vesuvio NA 12 9196 664499
Massa di Somma NA 12 5444 669943
Sant'Anastasia NA 12 27671 697614
Pagani SA 12 35834 733448
Portici NA 12 55274 788722
Ercolano NA 12 53709 842431
Pollena Trocchia NA 12 13562 855993
Carbonara di Nola NA 12 2429 858422
Pimonte NA 13 5980 864402
Domicella AV 13 1862 866264
Nocera Inferiore SA 14 46043 912307
Cercola NA 14 18267 930574
San Giorgio a Cremano NA 14 45557 976131
Saviano NA 14 15982 992113
Vico Equense NA 14 20969 1013082
Liveri NA 15 1607 1014689
Scisciano NA 15 5994 1020683
Marzano di Nola AV 15 1727 1022410
San Paolo Bel Sito NA 15 3513 1025923
San Vitaliano NA 15 6461 1032384
Pomigliano d'Arco NA 16 39922 1072306
Pago del Vallo di Lauro AV 16 1830 1074136
Quindici AV 16 1938 1076074
Marigliano NA 16 30157 1106231
Lauro AV 16 3509 1109740
Volla NA 16 23755 1133495
Nocera Superiore SA 16 24263 1157758
Nola NA 16 34431 1192189
Brusciano NA 16 16466 1208655
Castello di Cisterna NA 16 7869 1216524
Tramonti SA 16 4171 1220695
Mariglianella NA 16 7787 1228482
Taurano AV 17 1546 1230028
Meta NA 17 8015 1238043
Agerola NA 17 7673 1245716
Roccapiemonte SA 17 9060 1254776
Casamarciano NA 17 3289 1258065
Siano SA 17 9979 1268044
Positano SA 17 3955 1271999
Scala SA 17 1533 1273532
Moschiano AV 18 1673 1275205
Cimitile NA 18 7280 1282485
Visciano NA 18 4454 1286939
Castel San Giorgio SA 18 13702 1300641
Piano di Sorrento NA 18 13109 1313750
Ravello SA 18 2490 1316240
Sant'Agnello NA 18 9122 1325362
Casalnuovo di Napoli NA 19 49855 1375217
Minori SA 19 2752 1377969
Furore SA 19 776 1378745
Bracigliano SA 19 5565 1384310
Camposano NA 19 5333 1389643
Comiziano NA 19 1814 1391457
Atrani SA 19 846 1392303
Amalfi SA 19 5149 1397452
Praiano SA 20 2047 1399499
Maiori SA 20 5573 1405072
Sorrento NA 20 16679 1421751
Conca dei Marini SA 20 696 1422447
Tufino NA 20 3776 1426223

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km NW of Scafati (50787 inhabitants)
10 Km N of Castellammare di Stabia (66466 inhabitants)
10 Km E of Torre del Greco (86275 inhabitants)
12 Km E of Portici (55274 inhabitants)
12 Km E of Ercolano (53709 inhabitants)
21 Km SE of Acerra (59573 inhabitants)
21 Km W of Cava de' Tirreni (53659 inhabitants)
21 Km E of Napoli (974074 inhabitants)
22 Km SE of Casoria (77642 inhabitants)
22 Km SE of Afragola (65057 inhabitants)
26 Km W of Salerno (135261 inhabitants)
28 Km E of Marano di Napoli (59874 inhabitants)
29 Km SE of Giugliano in Campania (122974 inhabitants)
30 Km SW of Avellino (54857 inhabitants)
32 Km SE of Aversa (53047 inhabitants)
34 Km E of Pozzuoli (81661 inhabitants)
35 Km SE of Caserta (76326 inhabitants)
46 Km SW of Benevento (60091 inhabitants)
46 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

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
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 2015-05-05
10:30:25
40.79 14.49 1 2016-01-08
08:44:50
Bollettino Sismico Italiano INGV 21961821
Rev 200 Md 2.4 2015-05-05
10:30:19
40.82 14.44 0 2015-10-19
08:07:52
Sala Operativa INGV-OV (Napoli) 18902691
Rev 100 Md 2.2 2015-05-05
10:30:26
40.82 14.47 0 2015-10-15
12:52:55
Sala Sismica INGV-Roma 21829131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-05-05 10:30:25 ± 0.26
Latitude 40.79 ± 0.02
Longitude 14.49 ± 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 21961821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2060
Semi-minor axis of confidence ellipse (meter) 1100
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 43
Circular confidence region, given by single value of horizontal uncertainty (meter) 2060
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.25181
Epicentral distance of station farthest from the epicenter (degree) 0.77432
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty 0.1
Num. used stations 3
Type of magnitude Md
Reference to an origin 21961821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-10-26 14:15:03

Md:2.2

Field Value
Value 2.2
Uncertainty 0.1
Num. used stations 2
Type of magnitude Md
Reference to an origin 21829131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-10-15 12:52:55

Md:2.4

Field Value
Value 2.4
Uncertainty 0
Num. used stations
Type of magnitude Md
Reference to an origin 18902691
Agency INGV
Autore Sala Operativa INGV-OV (Napoli)
Time of creation (UTC) 2015-05-05 10:58:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CMPR.HHZ. 2015-05-05T10:30:41.95 0.3 undecidable manual P 127 0.7743 50 0.12 88
IV.VAGA.HHZ. 2015-05-05T10:30:40.20 0.6 undecidable manual P 343 0.6583 50 0.35 58
IV.SNAL.HNE. 2015-05-05T10:30:38.08 1.0 undecidable manual P 75 0.5612 50 -0.1 31
IV.MODR.HHE. 2015-05-05T10:30:38.42 0.6 undecidable manual P 308 0.5864 50 -0.19 61
IV.MCRV.HHN. 2015-05-05T10:30:37.04 0.3 undecidable manual P 90 0.5126 91 -0.18 92
IV.PSB1.HNE. 2015-05-05T10:30:37.92 0.6 undecidable manual P 29 0.5 91 0.99 47
IV.PIGN.HNE. 2015-05-05T10:30:36.40 0.3 undecidable manual P 331 0.4757 91 0 96
IV.VITU.HHZ. 2015-05-05T10:30:34.48 0.3 undecidable manual P 15 0.411 91 -0.47 88
IV.PAOL.HHN. 2015-05-05T10:30:31.38 0.3 undecidable manual P 13 0.2518 91 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PAOL.HHN. Md:2.1 28 END duration s
IV.VITU.HHZ. Md:2.2 31 END duration s
IV.CMPR.HHZ. Md:2.3 32 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