Earthquake with magnitude of Md 2.3 on date 22-02-1985 and time 17:06:27 (UTC) in region 3 km SE Cittareale (RI)

A magnitude Md 2.3 earthquake occured in region: 3 km SE Cittareale (RI), on

  • 22-02-1985 17:06:27 (UTC)
  • 22-02-1985 18:06:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6, 13.18 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
Cittareale RI 3 482 482
Amatrice RI 9 2657 3139
Montereale AQ 10 2581 5720
Borbona RI 11 617 6337
Posta RI 11 694 7031
Accumoli RI 12 667 7698
Capitignano AQ 13 665 8363
Cagnano Amiterno AQ 16 1369 9732
Campotosto AQ 16 542 10274
Leonessa RI 18 2435 12709
Barete AQ 18 737 13446
Cascia PG 19 3217 16663
Micigliano RI 20 127 16790
Monteleone di Spoleto PG 20 599 17389

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of L'Aquila (69753 inhabitants)
43 Km W of Teramo (54892 inhabitants)
44 Km E of Terni (111501 inhabitants)
56 Km SE of Foligno (57155 inhabitants)
77 Km NE of Guidonia Montecelio (88673 inhabitants)
78 Km NE of Tivoli (56533 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
85 Km W of Chieti (51815 inhabitants)
86 Km W of Pescara (121014 inhabitants)
86 Km SE of Perugia (166134 inhabitants)
91 Km E of Viterbo (67173 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 2.3 1985-02-22
17:06:27
42.6 13.18 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 2209
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-22 17:06:27 ± 0.675
Latitude 42.60 ± 0.04
Longitude 13.18 ± 0.05
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2209

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) 6286.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.00899
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 2
Type of magnitude Md
Reference to an origin 2209
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. 1985-02-22T17:06:47.50 10.0 undecidable manual PG 152 0.009 0.27 1.1
--.CM8.Z. 1985-02-22T17:06:46.60 10.0 undecidable manual SG 357 0.0053 -1.91 0.1
--.MNS.Z. 1985-02-22T17:06:43.20 10.0 undecidable manual SG 239 0.0038 0 0.7
--.CM8.Z. 1985-02-22T17:06:40.70 10.0 undecidable manual PG 357 0.0053 1.06 0.9
--.PO9.Z. 1985-02-22T17:06:37.00 10.0 undecidable manual SG 261 0.0016 1.79 0.1
--.MNS.Z. 1985-02-22T17:06:35.20 10.0 undecidable manual PG 239 0.0038 -1.37 0.6
--.PO9.Z. 1985-02-22T17:06:32.00 10.0 positive manual PG 261 0.0016 0.05 3.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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