Earthquake with magnitude of Md 1.8 on date 24-04-1985 and time 21:45:25 (UTC) in region 2 km S Capitignano (AQ)

A magnitude Md 1.8 earthquake occured in region: 2 km S Capitignano (AQ), on

  • 24-04-1985 21:45:25 (UTC)
  • 24-04-1985 23:45:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.501, 13.308 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
Capitignano AQ 2 665 665
Montereale AQ 6 2581 3246
Barete AQ 6 737 3983
Pizzoli AQ 7 4326 8309
Cagnano Amiterno AQ 8 1369 9678
Campotosto AQ 8 542 10220
Borbona RI 14 617 10837
Amatrice RI 15 2657 13494
Scoppito AQ 15 3727 17221
Crognaleto TE 15 1297 18518
Posta RI 18 694 19212
Cittareale RI 18 482 19694
L'Aquila AQ 18 69753 89447
Fano Adriano TE 20 296 89743

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of L'Aquila (69753 inhabitants)
37 Km W of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
71 Km SE of Foligno (57155 inhabitants)
73 Km W of Chieti (51815 inhabitants)
73 Km NE of Tivoli (56533 inhabitants)
73 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km W of Pescara (121014 inhabitants)
96 Km NE of Roma (2864731 inhabitants)
99 Km E of Viterbo (67173 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 1.8 1985-04-24
21:45:25
42.501 13.308 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 5439
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-24 21:45:25 ± 0.259
Latitude 42.5010 ± 0.0195
Longitude 13.3080 ± 0.0176
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 5439

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) 2610.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 221
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) 0.00251
Epicentral distance of station farthest from the epicenter (degree) 0.00429
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:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 5439
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MNS.Z. 1985-04-24T21:45:43.00 10.0 undecidable manual SG 255 0.0043 -0.19 0.6
--.ALP.Z. 1985-04-24T21:45:39.00 10.0 undecidable manual SG 34 0.003 0.29 0.7
--.MNS.Z. 1985-04-24T21:45:36.00 10.0 undecidable manual PG 255 0.0043 0.09 1.9
--.PO9.Z. 1985-04-24T21:45:36.50 10.0 undecidable manual SG 284 0.0025 -0.34 0.4
--.ALP.Z. 1985-04-24T21:45:33.00 10.0 undecidable manual PG 34 0.003 -0.32 1.1
--.PO9.Z. 1985-04-24T21:45:32.50 10.0 undecidable manual PG 284 0.0025 0.26 1.4
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