Earthquake with magnitude of Md 2.3 on date 01-11-1985 and time 09:04:21 (Italy) in region 7 km SE Leonessa (RI)

A magnitude Md 2.3 earthquake occured in region: 7 km SE Leonessa (RI), on

  • 01-11-1985 08:04:21 (UTC)
  • 01-11-1985 09:04:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.51, 13 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
Leonessa RI 7 2435 2435
Micigliano RI 8 127 2562
Posta RI 8 694 3256
Cantalice RI 9 2755 6011
Poggio Bustone RI 10 2055 8066
Borbona RI 11 617 8683
Antrodoco RI 12 2588 11271
Borgo Velino RI 12 972 12243
Rivodutri RI 12 1253 13496
Castel Sant'Angelo RI 13 1308 14804
Cittaducale RI 14 6828 21632
Morro Reatino RI 14 373 22005
Polino TR 16 233 22238
Rieti RI 16 47698 69936
Monteleone di Spoleto PG 17 599 70535
Labro RI 17 374 70909
Cittareale RI 18 482 71391
Colli sul Velino RI 18 533 71924
Cagnano Amiterno AQ 19 1369 73293
Montereale AQ 20 2581 75874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Terni (111501 inhabitants)
37 Km W of L'Aquila (69753 inhabitants)
56 Km SE of Foligno (57155 inhabitants)
60 Km W of Teramo (54892 inhabitants)
61 Km NE of Guidonia Montecelio (88673 inhabitants)
63 Km N of Tivoli (56533 inhabitants)
74 Km E of Viterbo (67173 inhabitants)
81 Km NE of Roma (2864731 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
93 Km N of Velletri (53303 inhabitants)
94 Km W of Montesilvano (53738 inhabitants)
97 Km W of Chieti (51815 inhabitants)
99 Km W of Pescara (121014 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 2.3 1985-11-01
08:04:21
42.51 13.01 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 15249
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-11-01 08:04:21 ± 0.231
Latitude 42.51 ± 0.01
Longitude 13.01 ± 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 15249

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) 2232.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
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) 0.00235
Epicentral distance of station farthest from the epicenter (degree) 0.0089
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 4
Type of magnitude Md
Reference to an origin 15249
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:18:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AR1.Z. 1985-11-01T08:04:55.00 10.0 undecidable manual SG 357 0.0089 -0.61 0.4
--.AS1.Z. 1985-11-01T08:04:43.80 10.0 undecidable manual SG 334 0.0054 0.37 0.7
--.AR1.Z. 1985-11-01T08:04:41.00 10.0 undecidable manual PG 357 0.0089 -0.36 1.4
--.AS1.Z. 1985-11-01T08:04:35.00 10.0 undecidable manual PG 334 0.0054 0.67 1.1
--.AQU.Z. 1985-11-01T08:04:35.50 10.0 undecidable manual SG 117 0.0029 1.07 0.2
--.MNS.Z. 1985-11-01T08:04:33.00 10.0 undecidable manual SG 242 0.0023 0.54 0.6
--.AQU.Z. 1985-11-01T08:04:28.70 10.0 undecidable manual PG 117 0.0029 -0.43 1.8
--.MNS.Z. 1985-11-01T08:04:27.50 10.0 undecidable manual PG 242 0.0023 -0.49 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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