Earthquake with magnitude of Md 2.6 on date 22-02-1985 and time 19:17:10 (Italy) in region 8 km SE Capitignano (AQ)

A magnitude Md 2.6 earthquake occured in region: 8 km SE Capitignano (AQ), on

  • 22-02-1985 18:17:10 (UTC)
  • 22-02-1985 19:17:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.48, 13.38 at 9 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 8 665 665
Pizzoli AQ 8 4326 4991
Barete AQ 8 737 5728
Campotosto AQ 9 542 6270
Crognaleto TE 12 1297 7567
Montereale AQ 12 2581 10148
Cagnano Amiterno AQ 13 1369 11517
L'Aquila AQ 14 69753 81270
Scoppito AQ 15 3727 84997
Pietracamela TE 16 271 85268
Fano Adriano TE 16 296 85564
Amatrice RI 19 2657 88221
Cortino TE 20 656 88877

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km N of L'Aquila (69753 inhabitants)
34 Km SW of Teramo (54892 inhabitants)
60 Km E of Terni (111501 inhabitants)
64 Km W of Montesilvano (53738 inhabitants)
67 Km W of Chieti (51815 inhabitants)
69 Km W of Pescara (121014 inhabitants)
74 Km NE of Tivoli (56533 inhabitants)
75 Km NE of Guidonia Montecelio (88673 inhabitants)
77 Km SE of Foligno (57155 inhabitants)
98 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 2.6 1985-02-22
18:17:10
42.48 13.38 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 2219
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-22 18:17:10 ± 0.433
Latitude 42.48 ± 0.03
Longitude 13.38 ± 0.05
Depth (km) 9 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2219

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) 4869
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.00745
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 2219
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:07:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SD1.Z. 1985-02-22T18:17:40.50 10.0 undecidable manual SG 157 0.0074 0.95 0.3
--.CM8.Z. 1985-02-22T18:17:37.30 10.0 undecidable manual SG 346 0.0066 0.79 0.6
--.MNS.Z. 1985-02-22T18:17:28.50 10.0 undecidable manual SG 260 0.0046 -1.05 0.3
--.SD1.Z. 1985-02-22T18:17:27.00 10.0 undecidable manual PG 157 0.0074 -0.38 1.3
--.PO9.Z. 1985-02-22T18:17:25.50 10.0 undecidable manual SG 287 0.003 1.94 0
--.CM8.Z. 1985-02-22T18:17:24.70 10.0 undecidable manual PG 346 0.0066 -0.91 0.8
--.MNS.Z. 1985-02-22T18:17:21.00 10.0 undecidable manual PG 260 0.0046 -0.6 1.4
--.PO9.Z. 1985-02-22T18:17:19.00 10.0 undecidable manual PG? 287 0.003 0.85 0.4
--.AQU.Z. 1985-02-22T18:17:17.00 10.0 undecidable manual SG 171 0.0011 0.52 0.9
--.AQU.Z. 1985-02-22T18:17:14.00 10.0 positive manual PG 171 0.0011 -0.06 3.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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