Earthquake with magnitude of Md 3.0 on date 23-02-1986 and time 07:16:52 (Italy) in region 3 km W Isernia (IS)

A magnitude Md 3.0 earthquake occured in region: 3 km W Isernia (IS), on

  • 23-02-1986 06:16:52 (UTC)
  • 23-02-1986 07:16:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.59, 14.19 at 5 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
Isernia IS 3 21842 21842
Macchia d'Isernia IS 4 1035 22877
Fornelli IS 4 1909 24786
Sant'Agapito IS 6 1496 26282
Montaquila IS 7 2456 28738
Colli a Volturno IS 7 1349 30087
Miranda IS 8 1047 31134
Pettoranello del Molise IS 8 460 31594
Monteroduni IS 8 2264 33858
Pesche IS 8 1661 35519
Longano IS 9 690 36209
Rocchetta a Volturno IS 9 1113 37322
Acquaviva d'Isernia IS 10 425 37747
Cerro al Volturno IS 10 1281 39028
Carpinone IS 11 1157 40185
Scapoli IS 11 680 40865
Castelpizzuto IS 12 155 41020
Forlì del Sannio IS 12 675 41695
Filignano IS 12 648 42343
Roccasicura IS 12 550 42893
Castel San Vincenzo IS 13 516 43409
Sessano del Molise IS 13 727 44136
Castelpetroso IS 13 1680 45816
Pozzilli IS 14 2380 48196
Capriati a Volturno CE 14 1541 49737
Rionero Sannitico IS 14 1118 50855
Gallo Matese CE 14 579 51434
Fontegreca CE 15 811 52245
Pizzone IS 15 329 52574
Pescolanciano IS 16 855 53429
Santa Maria del Molise IS 16 665 54094
Ciorlano CE 16 426 54520
Carovilli IS 16 1359 55879
Letino CE 16 712 56591
Venafro IS 17 11280 67871
Roccamandolfi IS 17 938 68809
Montenero Val Cocchiara IS 17 538 69347
Prata Sannita CE 18 1502 70849
Macchiagodena IS 18 1854 72703
Cantalupo nel Sannio IS 19 739 73442
Conca Casale IS 19 200 73642
Chiauci IS 19 233 73875
Valle Agricola CE 19 890 74765
Civitanova del Sannio IS 20 945 75710
Viticuso FR 20 353 76063

Municipalities with at least 50000 inhabitants

An earthquake occurred to
59 Km N of Caserta (76326 inhabitants)
69 Km N of Aversa (53047 inhabitants)
71 Km NW of Benevento (60091 inhabitants)
73 Km N of Acerra (59573 inhabitants)
74 Km N of Giugliano in Campania (122974 inhabitants)
75 Km N of Afragola (65057 inhabitants)
77 Km N of Casoria (77642 inhabitants)
77 Km N of Marano di Napoli (59874 inhabitants)
83 Km N of Pozzuoli (81661 inhabitants)
84 Km N of Napoli (974074 inhabitants)
85 Km S of Chieti (51815 inhabitants)
86 Km N of Portici (55274 inhabitants)
88 Km N of Ercolano (53709 inhabitants)
91 Km N of Torre del Greco (86275 inhabitants)
91 Km NW of Avellino (54857 inhabitants)
97 Km S of Pescara (121014 inhabitants)
98 Km N of Scafati (50787 inhabitants)
100 Km W of San Severo (53905 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 3.0 1986-02-23
06:16:52
41.59 14.19 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 23099
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-02-23 06:16:52 ± 0.215
Latitude 41.59 ± 0.02
Longitude 14.19 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 23099

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) 2745.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
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) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.02347
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 23099
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:25:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CRE.Z. 1986-02-23T06:17:36.00 10.0 undecidable manual PN 321 0.0235 1.11 0.2
--.ARV.Z. 1986-02-23T06:17:29.00 10.0 undecidable manual PN 334 0.019 0.92 0.4
--.MG9.Z. 1986-02-23T06:17:24.00 10.0 undecidable manual PN 144 0.016 0.51 0.7
--.MNS.Z. 1986-02-23T06:17:18.00 10.0 undecidable manual PN 305 0.0123 0.11 1.1
--.SGO.Z. 1986-02-23T06:17:17.00 10.0 undecidable manual PN 140 0.012 -0.31 1
--.ALP.Z. 1986-02-23T06:17:16.86 10.0 undecidable manual PN 339 0.0114 0.33 2.1
--.RDP.Z. 1986-02-23T06:17:15.50 10.0 undecidable manual PN 279 0.01 1.18 0.3
--.TR9.Z. 1986-02-23T06:17:11.20 10.0 undecidable manual PG 124 0.0085 -0.29 1.2
--.SD1.Z. 1986-02-23T06:17:03.00 10.0 undecidable manual SG 292 0.0028 -1.18 0.2
--.MSC.Z. 1986-02-23T06:17:02.50 10.0 undecidable manual PG 202 0.0039 0.63 0.8
--.SD1.Z. 1986-02-23T06:16:58.00 10.0 positive manual PG 292 0.0028 -1.11 0.7
--.SGG.Z. 1986-02-23T06:16:57.50 10.0 positive manual PG 145 0.0022 -0.31 2.3
--.DUI.Z. 1986-02-23T06:16:56.50 10.0 positive manual PG 71 0.0019 -0.48 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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