Earthquake with magnitude of Md 2.1 on date 13-02-1986 and time 14:12:12 (Italy) in region 5 km NE Borbona (RI)

A magnitude Md 2.1 earthquake occured in region: 5 km NE Borbona (RI), on

  • 13-02-1986 13:12:12 (UTC)
  • 13-02-1986 14:12:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.55, 13.16 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
Borbona RI 5 617 617
Posta RI 6 694 1311
Montereale AQ 7 2581 3892
Cittareale RI 7 482 4374
Cagnano Amiterno AQ 11 1369 5743
Capitignano AQ 12 665 6408
Amatrice RI 14 2657 9065
Micigliano RI 14 127 9192
Barete AQ 15 737 9929
Leonessa RI 16 2435 12364
Antrodoco RI 16 2588 14952
Pizzoli AQ 17 4326 19278
Campotosto AQ 17 542 19820
Accumoli RI 18 667 20487
Borgo Velino RI 18 972 21459

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of L'Aquila (69753 inhabitants)
42 Km E of Terni (111501 inhabitants)
46 Km W of Teramo (54892 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
71 Km NE of Guidonia Montecelio (88673 inhabitants)
72 Km NE of Tivoli (56533 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
85 Km W of Chieti (51815 inhabitants)
87 Km W of Pescara (121014 inhabitants)
88 Km E of Viterbo (67173 inhabitants)
88 Km SE of Perugia (166134 inhabitants)
92 Km NE of Roma (2864731 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 2.1 1986-02-13
13:12:12
42.55 13.16 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 22639
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-02-13 13:12:12 ± 0.284
Latitude 42.55 ± 0.01
Longitude 13.16 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 22639

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) 2075.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 246
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00348
Epicentral distance of station farthest from the epicenter (degree) 0.00575
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 22639
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:24:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CM8.Z. 1986-02-13T13:12:35.45 10.0 undecidable manual SG 358 0.0057 0.48 0.2
--.ASS.Z. 1986-02-13T13:12:34.50 10.0 undecidable manual SG 323 0.0057 -0.16 0.7
--.MNS.Z. 1986-02-13T13:12:27.00 10.0 undecidable manual SG 244 0.0035 0.03 0.8
--.ASS.Z. 1986-02-13T13:12:25.00 10.0 undecidable manual PG 323 0.0057 -0.27 1.2
--.CM8.Z. 1986-02-13T13:12:25.22 10.0 undecidable manual PG 358 0.0057 -0.23 1.4
--.MNS.Z. 1986-02-13T13:12:21.00 10.0 undecidable manual PG 244 0.0035 0.17 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download