Earthquake with magnitude of Md 0.9 on date 21-03-2017 and time 20:28:34 (UTC) in region 5 km SW Ottaviano (NA)

A magnitude Md 0.9 earthquake occured in region: 5 km SW Ottaviano (NA), on

  • 21-03-2017 20:28:34 (UTC)
  • 21-03-2017 21:28:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.82, 14.43 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 5 23860 23860
Somma Vesuviana NA 5 35233 59093
Massa di Somma NA 5 5444 64537
San Sebastiano al Vesuvio NA 5 9196 73733
Sant'Anastasia NA 6 27671 101404
Boscotrecase NA 6 10363 111767
Trecase NA 6 9097 120864
Pollena Trocchia NA 6 13562 134426
Terzigno NA 6 18968 153394
Portici NA 6 55274 208668
Boscoreale NA 7 28072 236740
San Giuseppe Vesuviano NA 7 30657 267397
Torre del Greco NA 7 86275 353672
Ercolano NA 7 53709 407381
Cercola NA 7 18267 425648
Torre Annunziata NA 7 42789 468437
San Giorgio a Cremano NA 8 45557 513994
San Gennaro Vesuviano NA 10 11966 525960
Volla NA 10 23755 549715
Poggiomarino NA 10 21976 571691
Pomigliano d'Arco NA 10 39922 611613
Pompei NA 10 25358 636971
Castello di Cisterna NA 11 7869 644840
Brusciano NA 11 16466 661306
Scisciano NA 12 5994 667300
Scafati SA 12 50787 718087
Marigliano NA 12 30157 748244
Mariglianella NA 12 7787 756031
Palma Campania NA 12 15978 772009
Saviano NA 12 15982 787991
San Vitaliano NA 12 6461 794452
Casalnuovo di Napoli NA 12 49855 844307
Striano NA 13 8397 852704
Santa Maria la Carità NA 13 11722 864426
Carbonara di Nola NA 14 2429 866855
San Paolo Bel Sito NA 14 3513 870368
Nola NA 14 34431 904799
San Marzano sul Sarno SA 14 10442 915241
Liveri NA 15 1607 916848
Angri SA 15 34002 950850
Acerra NA 15 59573 1010423
Domicella AV 15 1862 1012285
San Valentino Torio SA 15 10947 1023232
Castellammare di Stabia NA 15 66466 1089698
Casoria NA 15 77642 1167340
Sant'Antonio Abate NA 15 19743 1187083
Afragola NA 15 65057 1252140
Napoli NA 15 974074 2226214
Cimitile NA 15 7280 2233494
Marzano di Nola AV 16 1727 2235221
Casavatore NA 16 18661 2253882
Sarno SA 16 31529 2285411
Casamarciano NA 16 3289 2288700
Lettere NA 16 6188 2294888
Casola di Napoli NA 17 3898 2298786
Gragnano NA 17 29136 2327922
Arzano NA 17 34886 2362808
Camposano NA 17 5333 2368141
Pago del Vallo di Lauro AV 17 1830 2369971
Sant'Egidio del Monte Albino SA 17 8909 2378880
Visciano NA 17 4454 2383334
Vico Equense NA 18 20969 2404303
Corbara SA 18 2545 2406848
Comiziano NA 18 1814 2408662
Cardito NA 18 22755 2431417
Pimonte NA 18 5980 2437397
Lauro AV 18 3509 2440906
Pagani SA 18 35834 2476740
Cicciano NA 18 12906 2489646
Caivano NA 19 37879 2527525
Frattamaggiore NA 19 30329 2557854
Tufino NA 19 3776 2561630
Taurano AV 19 1546 2563176
Crispano NA 19 12354 2575530
Quindici AV 19 1938 2577468
Grumo Nevano NA 19 18061 2595529
Casandrino NA 20 14336 2609865
Meta NA 20 8015 2617880
Nocera Inferiore SA 20 46043 2663923
Frattaminore NA 20 16208 2680131

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km E of Portici (55274 inhabitants)
7 Km NE of Torre del Greco (86275 inhabitants)
7 Km E of Ercolano (53709 inhabitants)
12 Km NW of Scafati (50787 inhabitants)
15 Km SE of Acerra (59573 inhabitants)
15 Km N of Castellammare di Stabia (66466 inhabitants)
15 Km SE of Casoria (77642 inhabitants)
15 Km SE of Afragola (65057 inhabitants)
15 Km E of Napoli (974074 inhabitants)
22 Km E of Marano di Napoli (59874 inhabitants)
23 Km SE of Giugliano in Campania (122974 inhabitants)
25 Km SE of Aversa (53047 inhabitants)
27 Km NW of Cava de' Tirreni (53659 inhabitants)
29 Km E of Pozzuoli (81661 inhabitants)
29 Km S of Caserta (76326 inhabitants)
32 Km NW of Salerno (135261 inhabitants)
32 Km W of Avellino (54857 inhabitants)
45 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 2017-03-21
20:28:34
40.82 14.43 0 2018-01-10
09:55:02
Bollettino Sismico Italiano INGV 48848961
Rev 100 Md 1.0 2017-03-21
20:28:33
40.76 14.42 1 2017-03-21
20:37:21
Sala Sismica INGV-Roma 42754231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-03-21 20:28:34 ± 0.1
Latitude 40.82 ± 0.00
Longitude 14.43 ± 0.01
Depth (km) 0 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 48848961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 740
Semi-minor axis of confidence ellipse (meter) 380
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) 740
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
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) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.0045
Epicentral distance of station farthest from the epicenter (degree) 0.01799
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 5
Type of magnitude Md
Reference to an origin 48848961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-08-09 12:22:46

Md:1

Field Value
Value 1
Uncertainty 0.1
Num. used stations 3
Type of magnitude Md
Reference to an origin 42754231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-03-21 20:37:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VTIR.HHZ. 2017-03-21T20:28:35.23 0.3 undecidable manual P 195 0.018 96 0.3 72
IV.VARP.HHN. 2017-03-21T20:28:35.06 0.1 undecidable manual P 247 0.0162 96 0.16 98
IV.VVDG.HHZ. 2017-03-21T20:28:35.28 0.6 undecidable manual S 339 0.0135 98 0.22 49
IV.VBKN.HHZ. 2017-03-21T20:28:34.52 0.1 undecidable manual P 358 0.0072 104 -0.17 98
IV.VVDG.HHZ. 2017-03-21T20:28:34.82 0.3 undecidable manual P 339 0.0135 98 -0.01 76
IV.CRTO.HHZ. 2017-03-21T20:28:34.73 0.6 undecidable manual S 253 0.0063 106 -0.06 50
IV.VCRE.HHZ. 2017-03-21T20:28:34.54 0.1 undecidable manual P 168 0.0045 114 -0.09 100
IV.VBKN.HHZ. 2017-03-21T20:28:34.88 0.3 undecidable manual S 358 0.0072 104 0.07 75
IV.CRTO.HHZ. 2017-03-21T20:28:34.40 0.1 undecidable manual P 253 0.0063 106 -0.28 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRTO.HHZ. Md:0.9 8 END duration s
IV.VBKN.HHZ. Md:0.9 8 END duration s
IV.VVDG.HHZ. Md:1 8 END duration s
IV.VCRE.HHZ. Md:0.8 7 END duration s
IV.VARP.HHN. Md:0.7 6 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