Earthquake with magnitude of Md 2.4 on date 10-01-1985 and time 06:21:18 (Italy) in region 2 km E Castel Sant'Angelo (RI)

A magnitude Md 2.4 earthquake occured in region: 2 km E Castel Sant'Angelo (RI), on

  • 10-01-1985 05:21:18 (UTC)
  • 10-01-1985 06:21:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.39, 13.05 at 6 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
Castel Sant'Angelo RI 2 1308 1308
Borgo Velino RI 2 972 2280
Antrodoco RI 4 2588 4868
Micigliano RI 7 127 4995
Cittaducale RI 8 6828 11823
Concerviano RI 9 291 12114
Petrella Salto RI 11 1197 13311
Cantalice RI 15 2755 16066
Longone Sabino RI 15 597 16663
Belmonte in Sabina RI 15 636 17299
Borbona RI 15 617 17916
Posta RI 15 694 18610
Fiamignano RI 15 1413 20023
Rieti RI 15 47698 67721
Cagnano Amiterno AQ 16 1369 69090
Rocca Sinibalda RI 16 815 69905
Varco Sabino RI 17 187 70092
Scoppito AQ 17 3727 73819
Marcetelli RI 18 89 73908
Poggio Bustone RI 18 2055 75963

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km W of L'Aquila (69753 inhabitants)
38 Km SE of Terni (111501 inhabitants)
51 Km NE of Guidonia Montecelio (88673 inhabitants)
52 Km NE of Tivoli (56533 inhabitants)
62 Km W of Teramo (54892 inhabitants)
69 Km SE of Foligno (57155 inhabitants)
72 Km NE of Roma (2864731 inhabitants)
78 Km E of Viterbo (67173 inhabitants)
81 Km N of Velletri (53303 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
92 Km NE of Pomezia (62966 inhabitants)
92 Km W of Chieti (51815 inhabitants)
95 Km NE of Aprilia (73446 inhabitants)
96 Km W of Pescara (121014 inhabitants)
96 Km NE of Fiumicino (78395 inhabitants)
96 Km SE of Perugia (166134 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 2.4 1985-01-10
05:21:18
42.39 13.05 6 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 329
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-01-10 05:21:18 ± 0.162
Latitude 42.39 ± 0.01
Longitude 13.05 ± 0.01
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 329

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) 1548.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.00996
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 329
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:05:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1985-01-10T05:21:56.50 10.0 undecidable manual SN 355 0.01 0.13 0.5
--.SD1.Z. 1985-01-10T05:21:50.50 10.0 undecidable manual SG 140 0.0079 1.03 0
--.ARV.Z. 1985-01-10T05:21:40.00 10.0 undecidable manual PN 355 0.01 -0.29 0.9
--.SD1.Z. 1985-01-10T05:21:36.00 10.0 undecidable manual PG 140 0.0079 -0.3 1
--.ASS.Z. 1985-01-10T05:21:33.50 10.0 undecidable manual PG 336 0.0066 0.04 1.7
--.AQU.Z. 1985-01-10T05:21:29.00 10.0 undecidable manual SG 98 0.0023 0.4 0.6
--.PO9.Z. 1985-01-10T05:21:26.50 10.0 undecidable manual SG 336 0.0018 0.26 0.8
--.MNS.Z. 1985-01-10T05:21:24.50 10.0 undecidable manual PG 268 0.0024 0.02 1.9
--.AQU.Z. 1985-01-10T05:21:23.80 10.0 undecidable manual PG 98 0.0023 -0.45 0.8
--.PO9.Z. 1985-01-10T05:21:23.00 10.0 undecidable manual PG 336 0.0018 0.11 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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