Earthquake with magnitude of Md 2.9 on date 29-12-1985 and time 04:42:39 (Italy) in region 1 km N Cittaducale (RI)

A magnitude Md 2.9 earthquake occured in region: 1 km N Cittaducale (RI), on

  • 29-12-1985 03:42:39 (UTC)
  • 29-12-1985 04:42:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.39, 12.95 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
Cittaducale RI 1 6828 6828
Castel Sant'Angelo RI 7 1308 8136
Rieti RI 7 47698 55834
Concerviano RI 8 291 56125
Borgo Velino RI 9 972 57097
Cantalice RI 9 2755 59852
Belmonte in Sabina RI 10 636 60488
Micigliano RI 11 127 60615
Antrodoco RI 11 2588 63203
Poggio Bustone RI 13 2055 65258
Rocca Sinibalda RI 13 815 66073
Longone Sabino RI 14 597 66670
Petrella Salto RI 15 1197 67867
Contigliano RI 15 3783 71650
Rivodutri RI 16 1253 72903
Monte San Giovanni in Sabina RI 16 714 73617
Torricella in Sabina RI 16 1342 74959
Greccio RI 16 1558 76517
Montenero Sabino RI 17 299 76816
Morro Reatino RI 18 373 77189
Poggio San Lorenzo RI 18 589 77778
Varco Sabino RI 18 187 77965
Colli sul Velino RI 18 533 78498
Posta RI 19 694 79192
Leonessa RI 19 2435 81627
Labro RI 19 374 82001
Monteleone Sabino RI 19 1224 83225
Casaprota RI 20 744 83969
Castel di Tora RI 20 288 84257
Borbona RI 20 617 84874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km SE of Terni (111501 inhabitants)
37 Km W of L'Aquila (69753 inhabitants)
47 Km NE of Guidonia Montecelio (88673 inhabitants)
49 Km N of Tivoli (56533 inhabitants)
66 Km SE of Foligno (57155 inhabitants)
68 Km NE of Roma (2864731 inhabitants)
69 Km W of Teramo (54892 inhabitants)
70 Km E of Viterbo (67173 inhabitants)
80 Km N of Velletri (53303 inhabitants)
89 Km NE of Pomezia (62966 inhabitants)
91 Km NE of Fiumicino (78395 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
92 Km N of Aprilia (73446 inhabitants)
99 Km W of Montesilvano (53738 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 2.9 1985-12-29
03:42:39
42.39 12.95 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 19249
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-12-29 03:42:39 ± 0.313
Latitude 42.39 ± 0.02
Longitude 12.95 ± 0.03
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 19249

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) 2910.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.01279
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

Md:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 19249
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:21:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1985-12-29T03:43:17.00 10.0 undecidable manual SN 359 0.0099 0.39 0.4
--.CM2.Z. 1985-12-29T03:43:07.59 10.0 undecidable manual SG 9 0.0073 -0.14 0.9
--.CRE.Z. 1985-12-29T03:43:06.50 10.0 undecidable manual PN 329 0.0128 1.09 0.3
--.ARV.Z. 1985-12-29T03:43:00.00 10.0 undecidable manual PN 359 0.0099 -0.99 0.4
--.SD1.Z. 1985-12-29T03:42:59.00 10.0 undecidable manual PG 136 0.0083 0.82 0.7
--.CM2.Z. 1985-12-29T03:42:56.71 10.0 undecidable manual PG 9 0.0073 0.85 0.7
--.ASS.Z. 1985-12-29T03:42:53.00 10.0 undecidable manual PG 341 0.0063 -0.88 0.7
--.AQU.Z. 1985-12-29T03:42:52.50 10.0 undecidable manual SG 96 0.003 0.02 1
--.RDP.Z. 1985-12-29T03:42:52.50 10.0 undecidable manual PG 195 0.0059 -0.55 1.2
--.MNS.Z. 1985-12-29T03:42:48.00 10.0 undecidable manual SG 267 0.0018 0.03 1
--.AQU.Z. 1985-12-29T03:42:46.50 10.0 undecidable manual PG 96 0.003 -0.56 1.2
--.MNS.Z. 1985-12-29T03:42:44.50 10.0 negative manual PG 267 0.0018 0.05 3.4
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