Earthquake with magnitude of Md 0.9 on date 30-04-2017 and time 04:17:33 (Italy) in region 4 km SW Ottaviano (NA)

A magnitude Md 0.9 earthquake occured in region: 4 km SW Ottaviano (NA), on

  • 30-04-2017 02:17:33 (UTC)
  • 30-04-2017 04:17:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.83, 14.44 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
Ottaviano NA 4 23860 23860
Somma Vesuviana NA 5 35233 59093
Terzigno NA 5 18968 78061
San Giuseppe Vesuviano NA 5 30657 108718
Sant'Anastasia NA 6 27671 136389
Boscotrecase NA 6 10363 146752
Massa di Somma NA 6 5444 152196
Boscoreale NA 6 28072 180268
San Sebastiano al Vesuvio NA 6 9196 189464
Trecase NA 6 9097 198561
Pollena Trocchia NA 7 13562 212123
Portici NA 8 55274 267397
Torre Annunziata NA 8 42789 310186
Torre del Greco NA 8 86275 396461
Cercola NA 8 18267 414728
San Gennaro Vesuviano NA 8 11966 426694
Ercolano NA 8 53709 480403
Poggiomarino NA 9 21976 502379
San Giorgio a Cremano NA 9 45557 547936
Pompei NA 10 25358 573294
Pomigliano d'Arco NA 10 39922 613216
Volla NA 10 23755 636971
Castello di Cisterna NA 11 7869 644840
Palma Campania NA 11 15978 660818
Scisciano NA 11 5994 666812
Brusciano NA 11 16466 683278
Saviano NA 11 15982 699260
Scafati SA 11 50787 750047
Marigliano NA 11 30157 780204
Mariglianella NA 11 7787 787991
San Vitaliano NA 11 6461 794452
Striano NA 11 8397 802849
Carbonara di Nola NA 13 2429 805278
Casalnuovo di Napoli NA 13 49855 855133
San Paolo Bel Sito NA 13 3513 858646
Santa Maria la Carità NA 13 11722 870368
Nola NA 13 34431 904799
Domicella AV 14 1862 906661
San Marzano sul Sarno SA 14 10442 917103
Liveri NA 14 1607 918710
San Valentino Torio SA 14 10947 929657
Angri SA 14 34002 963659
Marzano di Nola AV 14 1727 965386
Cimitile NA 15 7280 972666
Sant'Antonio Abate NA 15 19743 992409
Acerra NA 15 59573 1051982
Castellammare di Stabia NA 15 66466 1118448
Sarno SA 15 31529 1149977
Casamarciano NA 15 3289 1153266
Afragola NA 16 65057 1218323
Casoria NA 16 77642 1295965
Pago del Vallo di Lauro AV 16 1830 1297795
Lettere NA 16 6188 1303983
Camposano NA 16 5333 1309316
Napoli NA 16 974074 2283390
Visciano NA 16 4454 2287844
Casola di Napoli NA 16 3898 2291742
Casavatore NA 16 18661 2310403
Gragnano NA 17 29136 2339539
Sant'Egidio del Monte Albino SA 17 8909 2348448
Comiziano NA 17 1814 2350262
Corbara SA 17 2545 2352807
Lauro AV 17 3509 2356316
Arzano NA 17 34886 2391202
Cicciano NA 18 12906 2404108
Taurano AV 18 1546 2405654
Pagani SA 18 35834 2441488
Tufino NA 18 3776 2445264
Quindici AV 18 1938 2447202
Pimonte NA 18 5980 2453182
Vico Equense NA 18 20969 2474151
Cardito NA 18 22755 2496906
Caivano NA 19 37879 2534785
Moschiano AV 19 1673 2536458
Roccarainola NA 19 7082 2543540
Nocera Inferiore SA 19 46043 2589583
Frattamaggiore NA 19 30329 2619912
Sperone AV 19 3706 2623618
Crispano NA 19 12354 2635972
Grumo Nevano NA 20 18061 2654033
Avella AV 20 7890 2661923

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km E of Portici (55274 inhabitants)
8 Km NE of Torre del Greco (86275 inhabitants)
8 Km E of Ercolano (53709 inhabitants)
11 Km NW of Scafati (50787 inhabitants)
15 Km SE of Acerra (59573 inhabitants)
15 Km N of Castellammare di Stabia (66466 inhabitants)
16 Km SE of Afragola (65057 inhabitants)
16 Km SE of Casoria (77642 inhabitants)
16 Km E of Napoli (974074 inhabitants)
23 Km E of Marano di Napoli (59874 inhabitants)
23 Km SE of Giugliano in Campania (122974 inhabitants)
26 Km SE of Aversa (53047 inhabitants)
26 Km NW of Cava de' Tirreni (53659 inhabitants)
29 Km SE of Caserta (76326 inhabitants)
30 Km E of Pozzuoli (81661 inhabitants)
31 Km W of Avellino (54857 inhabitants)
31 Km NW of Salerno (135261 inhabitants)
44 Km SW of Benevento (60091 inhabitants)
52 Km W of Battipaglia (50786 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 Md 0.9 2017-04-30
02:17:33
40.83 14.44 0 2018-01-10
09:56:13
Bollettino Sismico Italiano INGV 50215481
Rev 100 Md 0.7 2017-04-30
02:17:31
40.8 14.43 7 2017-04-30
02:45:07
Sala Sismica INGV-Roma 44623871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-04-30 02:17:33 ± 0.34
Latitude 40.83 ± 0.01
Longitude 14.44 ± 0.02
Depth (km) 0 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 50215481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1550
Semi-minor axis of confidence ellipse (meter) 980
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
Circular confidence region, given by single value of horizontal uncertainty (meter) 1550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 290
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.01079
Epicentral distance of station farthest from the epicenter (degree) 0.02698
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 3
Type of magnitude Md
Reference to an origin 50215481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-09-18 10:35:04

Md:0.7

Field Value
Value 0.7
Uncertainty 0
Num. used stations 1
Type of magnitude Md
Reference to an origin 44623871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-04-30 02:45:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VARP.HHZ. 2017-04-30T02:17:34.08 0.3 undecidable manual P 248 0.027 92 0.45 68
IV.VBKN.HHZ. 2017-04-30T02:17:33.50 0.3 undecidable manual S 287 0.0108 95 0.06 75
IV.CRTO.HHZ. 2017-04-30T02:17:33.59 0.6 undecidable manual S 251 0.0171 93 -0.09 49
IV.VBKN.HHZ. 2017-04-30T02:17:33.18 0.1 undecidable manual P 287 0.0108 95 -0.08 99
IV.VVDG.HHZ. 2017-04-30T02:17:33.42 0.3 undecidable manual P 300 0.0171 93 0.01 75
IV.CRTO.HHZ. 2017-04-30T02:17:33.19 0.1 undecidable manual P 251 0.0171 93 -0.21 96
IV.VCRE.HHZ. 2017-04-30T02:17:33.26 0.1 undecidable manual P 230 0.0117 94 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VBKN.HHZ. Md:0.7 6 END duration s
IV.CRTO.HHZ. Md:1 8 END duration s
IV.VCRE.HHZ. Md:1 8 END duration s
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download