Earthquake with magnitude of Md 1.0 on date 21-03-2017 and time 10:45:03 (UTC) in region 5 km SE Massa di Somma (NA)

A magnitude Md 1.0 earthquake occured in region: 5 km SE Massa di Somma (NA), on

  • 21-03-2017 10:45:03 (UTC)
  • 21-03-2017 11:45:03 (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
Massa di Somma NA 5 5444 5444
San Sebastiano al Vesuvio NA 5 9196 14640
Ottaviano NA 5 23860 38500
Somma Vesuviana NA 5 35233 73733
Sant'Anastasia NA 5 27671 101404
Pollena Trocchia NA 6 13562 114966
Boscotrecase NA 6 10363 125329
Trecase NA 6 9097 134426
Portici NA 6 55274 189700
Terzigno NA 6 18968 208668
Torre del Greco NA 6 86275 294943
Boscoreale NA 7 28072 323015
Ercolano NA 7 53709 376724
San Giuseppe Vesuviano NA 7 30657 407381
Cercola NA 7 18267 425648
Torre Annunziata NA 7 42789 468437
San Giorgio a Cremano NA 8 45557 513994
Volla NA 9 23755 537749
San Gennaro Vesuviano NA 10 11966 549715
Pomigliano d'Arco NA 10 39922 589637
Poggiomarino NA 10 21976 611613
Pompei NA 10 25358 636971
Castello di Cisterna NA 11 7869 644840
Brusciano NA 11 16466 661306
Scafati SA 12 50787 712093
Scisciano NA 12 5994 718087
Mariglianella NA 12 7787 725874
Marigliano NA 12 30157 756031
Palma Campania NA 12 15978 772009
Casalnuovo di Napoli NA 12 49855 821864
Saviano NA 12 15982 837846
San Vitaliano NA 12 6461 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 15 10442 915241
Acerra NA 15 59573 974814
Casoria NA 15 77642 1052456
Angri SA 15 34002 1086458
Liveri NA 15 1607 1088065
Domicella AV 15 1862 1089927
Afragola NA 15 65057 1154984
Napoli NA 15 974074 2129058
Castellammare di Stabia NA 15 66466 2195524
Sant'Antonio Abate NA 15 19743 2215267
San Valentino Torio SA 15 10947 2226214
Casavatore NA 16 18661 2244875
Cimitile NA 16 7280 2252155
Marzano di Nola AV 16 1727 2253882
Sarno SA 16 31529 2285411
Casamarciano NA 16 3289 2288700
Lettere NA 16 6188 2294888
Arzano NA 17 34886 2329774
Casola di Napoli NA 17 3898 2333672
Gragnano NA 17 29136 2362808
Camposano NA 17 5333 2368141
Pago del Vallo di Lauro AV 17 1830 2369971
Sant'Egidio del Monte Albino SA 17 8909 2378880
Vico Equense NA 18 20969 2399849
Visciano NA 18 4454 2404303
Cardito NA 18 22755 2427058
Comiziano NA 18 1814 2428872
Corbara SA 18 2545 2431417
Pimonte NA 18 5980 2437397
Caivano NA 18 37879 2475276
Lauro AV 18 3509 2478785
Frattamaggiore NA 19 30329 2509114
Pagani SA 19 35834 2544948
Cicciano NA 19 12906 2557854
Crispano NA 19 12354 2570208
Tufino NA 19 3776 2573984
Taurano AV 19 1546 2575530
Grumo Nevano NA 19 18061 2593591
Quindici AV 19 1938 2595529
Casandrino NA 19 14336 2609865
Frattaminore NA 20 16208 2626073
Meta NA 20 8015 2634088
Melito di Napoli NA 20 37826 2671914

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km E of Portici (55274 inhabitants)
6 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 SE of Casoria (77642 inhabitants)
15 Km SE of Afragola (65057 inhabitants)
15 Km NW of Castellammare di Stabia (66466 inhabitants)
15 Km E of Napoli (974074 inhabitants)
22 Km E of Marano di Napoli (59874 inhabitants)
22 Km SE of Giugliano in Campania (122974 inhabitants)
25 Km SE of Aversa (53047 inhabitants)
27 Km NW of Cava de' Tirreni (53659 inhabitants)
28 Km E of Pozzuoli (81661 inhabitants)
29 Km S of Caserta (76326 inhabitants)
32 Km NW of Salerno (135261 inhabitants)
33 Km W of Avellino (54857 inhabitants)
45 Km SW of Benevento (60091 inhabitants)
53 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 1.0 2017-03-21
10:45:03
40.82 14.43 0 2018-01-10
09:55:02
Bollettino Sismico Italiano INGV 48845611
Rev 100 Md 0.6 2017-03-21
10:45:03
40.82 14.44 2 2017-03-21
10:55:21
Sala Sismica INGV-Roma 42734621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-03-21 10:45:03 ± 0.06
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 48845611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 790
Semi-minor axis of confidence ellipse (meter) 280
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 302
Circular confidence region, given by single value of horizontal uncertainty (meter) 790
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 172
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.0036
Epicentral distance of station farthest from the epicenter (degree) 0.01709
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:1

Field Value
Value 1
Uncertainty 0.1
Num. used stations 5
Type of magnitude Md
Reference to an origin 48845611
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-08-09 11:09:22

Md:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 5
Type of magnitude Md
Reference to an origin 42734621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-03-21 10:55:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VVDG.HHZ. 2017-03-21T10:45:04.02 0.3 undecidable manual P 349 0.0135 98 0.05 74
IV.VTIR.HHZ. 2017-03-21T10:45:04.19 0.1 undecidable manual P 188 0.0171 96 0.14 99
IV.VBKN.HHZ. 2017-03-21T10:45:04.07 0.3 undecidable manual S 16 0.0072 103 0.1 74
IV.VARP.HHZ. 2017-03-21T10:45:04.35 0.6 undecidable manual S 244 0.0144 97 0.12 49
IV.VBKN.HHZ. 2017-03-21T10:45:03.69 0.1 undecidable manual P 16 0.0072 103 -0.15 98
IV.VARP.HHZ. 2017-03-21T10:45:03.94 0.1 undecidable manual P 244 0.0144 97 -0.05 100
IV.CRTO.HHZ. 2017-03-21T10:45:03.86 0.6 undecidable manual S 248 0.0036 114 0.02 50
IV.CRTO.HHZ. 2017-03-21T10:45:03.52 0.1 undecidable manual P 248 0.0036 114 -0.25 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRTO.HHZ. Md:0.8 7 END duration s
IV.VBKN.HHZ. Md:1 9 END duration s
IV.VARP.HHZ. Md:1.1 10 END duration s
IV.VTIR.HHZ. Md:1 8 END duration s
IV.VVDG.HHZ. Md:1 9 END duration s
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download