Earthquake (explosion) with magnitude of ML 1.7 on date 08-07-2021 and time 10:57:08 (Italy) in region Golfo di Napoli e Penisola Sorrentina

A magnitude ML 1.7 (explosion) earthquake occured in region: Golfo di Napoli e Penisola Sorrentina, on

  • 08-07-2021 08:57:08 (UTC)
  • 08-07-2021 10:57:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.736, 14.108 at 0 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Event type: explosion.

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
Bacoli NA 7 26560 26560
Procida NA 8 10530 37090
Monte di Procida NA 8 12886 49976
Pozzuoli NA 13 81661 131637
Ischia NA 14 19915 151552
Quarto NA 16 40930 192482
Barano d'Ischia NA 16 10113 202595
Casamicciola Terme NA 17 8362 210957
Napoli NA 17 974074 1185031
Serrara Fontana NA 18 3173 1188204
Lacco Ameno NA 19 4853 1193057
Marano di Napoli NA 20 59874 1252931

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km S of Pozzuoli (81661 inhabitants)
17 Km SW of Napoli (974074 inhabitants)
20 Km SW of Marano di Napoli (59874 inhabitants)
22 Km W of Ercolano (53709 inhabitants)
23 Km W of Torre del Greco (86275 inhabitants)
23 Km SW of Giugliano in Campania (122974 inhabitants)
23 Km W of Portici (55274 inhabitants)
25 Km SW of Casoria (77642 inhabitants)
27 Km SW of Afragola (65057 inhabitants)
28 Km SW of Aversa (53047 inhabitants)
32 Km W of Castellammare di Stabia (66466 inhabitants)
32 Km SW of Acerra (59573 inhabitants)
35 Km W of Scafati (50787 inhabitants)
42 Km SW of Caserta (76326 inhabitants)
51 Km W of Cava de' Tirreni (53659 inhabitants)
55 Km W of Salerno (135261 inhabitants)
61 Km W of Avellino (54857 inhabitants)
72 Km SW of Benevento (60091 inhabitants)
75 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
Reviewed
Rev100
ML 1.7 2021-07-08
08:57:08
40.7362 14.1075 0 2021-07-08
09:59:11
Sala Sismica INGV-Roma 92410471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-08 08:57:08 ± 0.29
Latitude 40.7362 ± 0.0126
Longitude 14.1075 ± 0.0166
Depth (km) 0 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type explosion
Origin ID 92410471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1369
Semi-minor axis of confidence ellipse (meter) 745
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 132
Circular confidence region, given by single value of horizontal uncertainty (meter) 1370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 182
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.04407
Epicentral distance of station farthest from the epicenter (degree) 1.1898
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 92410471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-08 09:59:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VVLD.HHZ. 2021-07-08T08:57:32.97 3.0 undecidable manual P 1.1898 1.23 0
IV.MCRV.HHZ. 2021-07-08T08:57:25.37 0.6 negative manual P 86 0.8049 50 0.22 41
IV.VAGA.HHZ. 2021-07-08T08:57:23.02 0.3 positive manual P 8 0.6853 50 -0.09 65
IV.PAOL.HHZ. 2021-07-08T08:57:18.64 0.6 positive manual P 50 0.456 90 -0.09 46
IV.PIGN.HHZ. 2021-07-08T08:57:17.60 0.3 positive manual P 7 0.4667 90 -1.38 42
IV.VCRE.HHZ. 2021-07-08T08:57:14.50 0.6 negative manual P 71 0.259 91 0.15 47
IV.VTIR.HHZ. 2021-07-08T08:57:13.81 0.6 negative manual P 74 0.25 91 -0.34 45
IV.CPIS.HHZ. 2021-07-08T08:57:12.16 0.3 undecidable manual S 18 0.098 92 -0.2 72
IV.COLB.HHZ. 2021-07-08T08:57:12.99 0.3 undecidable manual S 20 0.0881 92 1.01 55
IV.CPOZ.HHZ. 2021-07-08T08:57:12.17 0.6 undecidable manual S 6 0.0854 92 0.28 47
IV.ICAI.EHZ. 2021-07-08T08:57:11.52 0.3 negative manual P 268 0.1079 92 0.53 67
IV.CPOZ.HHZ. 2021-07-08T08:57:10.49 0.1 positive manual P 6 0.0854 92 -0.01 100
IV.CPIS.HHZ. 2021-07-08T08:57:10.86 0.1 negative manual P 18 0.098 92 0.09 98
IV.COLB.HHZ. 2021-07-08T08:57:10.55 0.1 positive manual P 20 0.0881 92 0 100
IV.CSFT.HHZ. 2021-07-08T08:57:10.98 0.3 negative manual P 15 0.0962 92 0.25 71
IV.CFMN.HHZ. 2021-07-08T08:57:10.69 0.1 positive manual P 354 0.0971 92 -0.07 98
IV.CMIS.HHZ. 2021-07-08T08:57:09.17 0.1 undecidable manual P 342 0.0441 94 -0.41 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VCRE.HHE. ML:2.1 0.000672 1.08 AML other m 2021-07-08T08:57:23.55
IV.VTIR.HHE. ML:1.7 0.000313 0.9 AML other m 2021-07-08T08:57:23.82
IV.PIGN.HHN. ML:1.3 5.075E-5 1.68 AML other m 2021-07-08T08:57:23.09
IV.VTIR.HHN. ML:1.8 0.0003745 0.72 AML other m 2021-07-08T08:57:25.43
IV.VCRE.HHN. ML:2.2 0.000915 0.52 AML other m 2021-07-08T08:57:26.09
IV.PAOL.HHE. ML:1.4 7.22E-5 0.86 AML other m 2021-07-08T08:57:30.68
IV.PIGN.HHE. ML:1.3 5.235E-5 0.86 AML other m 2021-07-08T08:57:30.33
IV.PAOL.HHN. ML:1.6 0.0001115 0.54 AML other m 2021-07-08T08:57:34.06
IV.VAGA.HHE. ML:1.5 4.49E-5 1.2 AML other m 2021-07-08T08:57:40.95
IV.VAGA.HHN. ML:1.8 8.905E-5 0.74 AML other m 2021-07-08T08:57:41.89
IV.VVLD.HHE. ML:1.4 1.715E-5 0.62 AML other m 2021-07-08T08:57:43.59
IV.MCRV.HHN. ML:1.6 4.65E-5 0.94 AML other m 2021-07-08T08:57:43.20
IV.MCRV.HHE. ML:1.3 2.64E-5 1.08 AML other m 2021-07-08T08:57:45.10
IV.VVLD.HHN. ML:1.5 2.065E-5 0.92 AML other m 2021-07-08T08:57:57.47
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download