Earthquake with magnitude of Md 2.6 on date 21-07-1989 and time 00:46:26 (Italy) in region 1 km S Trecase (NA)

A magnitude Md 2.6 earthquake occured in region: 1 km S Trecase (NA), on

  • 20-07-1989 22:46:26 (UTC)
  • 21-07-1989 00:46:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.762, 14.436 at 6 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
Trecase NA 1 9097 9097
Torre Annunziata NA 1 42789 51886
Boscotrecase NA 3 10363 62249
Boscoreale NA 4 28072 90321
Pompei NA 6 25358 115679
Torre del Greco NA 7 86275 201954
Terzigno NA 7 18968 220922
Scafati SA 8 50787 271709
Santa Maria la Carità NA 8 11722 283431
Castellammare di Stabia NA 8 66466 349897
Ercolano NA 9 53709 403606
Portici NA 10 55274 458880
Poggiomarino NA 10 21976 480856
San Giuseppe Vesuviano NA 10 30657 511513
Sant'Antonio Abate NA 10 19743 531256
San Sebastiano al Vesuvio NA 10 9196 540452
Ottaviano NA 11 23860 564312
Gragnano NA 11 29136 593448
Massa di Somma NA 11 5444 598892
Casola di Napoli NA 11 3898 602790
Vico Equense NA 11 20969 623759
Lettere NA 11 6188 629947
Angri SA 11 34002 663949
San Giorgio a Cremano NA 11 45557 709506
Pimonte NA 12 5980 715486
Pollena Trocchia NA 12 13562 729048
Somma Vesuviana NA 12 35233 764281
Sant'Anastasia NA 12 27671 791952
Cercola NA 13 18267 810219
San Marzano sul Sarno SA 13 10442 820661
Meta NA 13 8015 828676
Striano NA 13 8397 837073
San Gennaro Vesuviano NA 14 11966 849039
Corbara SA 14 2545 851584
Sant'Egidio del Monte Albino SA 14 8909 860493
Piano di Sorrento NA 14 13109 873602
San Valentino Torio SA 14 10947 884549
Sant'Agnello NA 14 9122 893671
Volla NA 15 23755 917426
Positano SA 15 3955 921381
Sorrento NA 16 16679 938060
Palma Campania NA 16 15978 954038
Pagani SA 16 35834 989872
Agerola NA 17 7673 997545
Pomigliano d'Arco NA 17 39922 1037467
Sarno SA 17 31529 1068996
Carbonara di Nola NA 17 2429 1071425
Nocera Inferiore SA 18 46043 1117468
Castello di Cisterna NA 18 7869 1125337
Brusciano NA 18 16466 1141803
Saviano NA 18 15982 1157785
Napoli NA 18 974074 2131859
Scisciano NA 18 5994 2137853
Domicella AV 18 1862 2139715
Mariglianella NA 18 7787 2147502
Massa Lubrense NA 18 14243 2161745
San Vitaliano NA 18 6461 2168206
Furore SA 18 776 2168982
Marigliano NA 18 30157 2199139
Praiano SA 19 2047 2201186
Casalnuovo di Napoli NA 19 49855 2251041
Scala SA 19 1533 2252574
Tramonti SA 19 4171 2256745
Liveri NA 19 1607 2258352
Ravello SA 19 2490 2260842
San Paolo Bel Sito NA 19 3513 2264355
Conca dei Marini SA 20 696 2265051
Marzano di Nola AV 20 1727 2266778
Nola NA 20 34431 2301209

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km E of Torre del Greco (86275 inhabitants)
8 Km W of Scafati (50787 inhabitants)
8 Km NW of Castellammare di Stabia (66466 inhabitants)
9 Km SE of Ercolano (53709 inhabitants)
10 Km SE of Portici (55274 inhabitants)
18 Km SE of Napoli (974074 inhabitants)
20 Km SE of Casoria (77642 inhabitants)
21 Km SE of Afragola (65057 inhabitants)
21 Km S of Acerra (59573 inhabitants)
24 Km W of Cava de' Tirreni (53659 inhabitants)
26 Km SE of Marano di Napoli (59874 inhabitants)
27 Km SE of Giugliano in Campania (122974 inhabitants)
29 Km W of Salerno (135261 inhabitants)
30 Km SE of Aversa (53047 inhabitants)
31 Km E of Pozzuoli (81661 inhabitants)
35 Km SW of Avellino (54857 inhabitants)
36 Km S of Caserta (76326 inhabitants)
49 Km W of Battipaglia (50786 inhabitants)
50 Km SW of Benevento (60091 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
Bulletin
Rev1000
Md 2.6 1989-07-20
22:46:26
40.762 14.436 6 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 95829
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-07-20 22:46:26 ± 0.262
Latitude 40.7620 ± 0.0155
Longitude 14.4360 ± 0.0467
Depth (km) 6 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 95829

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 4293.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
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) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00057
Epicentral distance of station farthest from the epicenter (degree) 0.00947
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 95829
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:29:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SGO.Z. 1989-07-20T22:46:51.50 10.0 undecidable manual SG 106 0.0062 -0.27 0.4
--.SGG.Z. 1989-07-20T22:46:49.10 10.0 undecidable manual SG 356 0.0056 -0.54 0.4
--.MGR.Z. 1989-07-20T22:46:47.50 10.0 undecidable manual PG 125 0.0095 -0.52 0.7
--.TR9.Z. 1989-07-20T22:46:42.40 10.0 undecidable manual PG 64 0.0059 1.64 0.1
--.SGG.Z. 1989-07-20T22:46:40.50 10.0 undecidable manual PG 356 0.0056 0.45 1.1
--.SGO.Z. 1989-07-20T22:46:40.50 10.0 undecidable manual PG 106 0.0062 -0.77 0.6
--.SOR.Z. 1989-07-20T22:46:31.70 10.0 positive manual PG 202 0.0017 0.23 2.5
--.OVO.Z. 1989-07-20T22:46:28.50 10.0 positive manual PG 335 0.0006 -0.45 2.2
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