Earthquake with magnitude of Md 2.3 on date 02-04-1986 and time 15:51:02 (Italy) in region 1 km E Micigliano (RI)

A magnitude Md 2.3 earthquake occured in region: 1 km E Micigliano (RI), on

  • 02-04-1986 13:51:02 (UTC)
  • 02-04-1986 15:51:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.45, 13.07 at 10 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
Micigliano RI 1 127 127
Antrodoco RI 4 2588 2715
Borgo Velino RI 5 972 3687
Castel Sant'Angelo RI 7 1308 4995
Posta RI 9 694 5689
Borbona RI 9 617 6306
Cittaducale RI 12 6828 13134
Cagnano Amiterno AQ 13 1369 14503
Cantalice RI 14 2755 17258
Leonessa RI 15 2435 19693
Concerviano RI 16 291 19984
Poggio Bustone RI 16 2055 22039
Montereale AQ 17 2581 24620
Petrella Salto RI 17 1197 25817
Barete AQ 17 737 26554
Rieti RI 18 47698 74252
Scoppito AQ 18 3727 77979
Pizzoli AQ 19 4326 82305
Rivodutri RI 19 1253 83558

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km W of L'Aquila (69753 inhabitants)
37 Km E of Terni (111501 inhabitants)
57 Km W of Teramo (54892 inhabitants)
57 Km NE of Guidonia Montecelio (88673 inhabitants)
58 Km NE of Tivoli (56533 inhabitants)
64 Km SE of Foligno (57155 inhabitants)
78 Km NE of Roma (2864731 inhabitants)
79 Km E of Viterbo (67173 inhabitants)
88 Km N of Velletri (53303 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
91 Km W of Chieti (51815 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
94 Km W of Pescara (121014 inhabitants)
99 Km NE of Pomezia (62966 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 2.3 1986-04-02
13:51:02
42.45 13.07 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 25319
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-04-02 13:51:02 ± 0.184
Latitude 42.45 ± 0.01
Longitude 13.07 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 25319

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) 1975.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00235
Epicentral distance of station farthest from the epicenter (degree) 0.00664
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 25319
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:27:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CM8.Z. 1986-04-02T13:51:29.46 10.0 undecidable manual SG 4 0.0066 1 0
--.ALP.Z. 1986-04-02T13:51:20.29 10.0 undecidable manual SG 48 0.0044 -0.04 0.8
--.CM8.Z. 1986-04-02T13:51:17.19 10.0 undecidable manual PG 4 0.0066 -0.34 1.2
--.AQU.Z. 1986-04-02T13:51:13.50 10.0 undecidable manual SG 111 0.0023 0.53 0.4
--.MNS.Z. 1986-04-02T13:51:13.50 10.0 undecidable manual SG 257 0.0026 -0.46 0.5
--.ALP.Z. 1986-04-02T13:51:12.50 10.0 undecidable manual PG 48 0.0044 -0.34 1.5
--.MNS.Z. 1986-04-02T13:51:09.50 10.0 undecidable manual PG 257 0.0026 0.34 1.5
--.AQU.Z. 1986-04-02T13:51:08.50 10.0 undecidable manual PG 111 0.0023 -0.09 2.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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