INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of Md 2.0 on date 01-04-1985 and time 04:00:45 (Italy) in region 2 km NE Micigliano (RI)

A magnitude Md 2.0 earthquake occured in region: 2 km NE Micigliano (RI), on

  • 01-04-1985 02:00:45 (UTC)
  • 01-04-1985 04:00:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.46, 13.07 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
Micigliano RI 2 127 127
Antrodoco RI 5 2588 2715
Borgo Velino RI 6 972 3687
Posta RI 7 694 4381
Borbona RI 8 617 4998
Castel Sant'Angelo RI 8 1308 6306
Cagnano Amiterno AQ 13 1369 7675
Cittaducale RI 13 6828 14503
Cantalice RI 14 2755 17258
Leonessa RI 14 2435 19693
Poggio Bustone RI 16 2055 21748
Montereale AQ 16 2581 24329
Concerviano RI 17 291 24620
Barete AQ 18 737 25357
Rieti RI 18 47698 73055
Rivodutri RI 19 1253 74308
Scoppito AQ 19 3727 78035
Petrella Salto RI 19 1197 79232
Pizzoli AQ 19 4326 83558
Cittareale RI 19 482 84040

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km W of L'Aquila (69753 inhabitants)
36 Km E of Terni (111501 inhabitants)
57 Km W of Teramo (54892 inhabitants)
59 Km NE of Guidonia Montecelio (88673 inhabitants)
60 Km NE of Tivoli (56533 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
79 Km E of Viterbo (67173 inhabitants)
80 Km NE of Roma (2864731 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
90 Km N of Velletri (53303 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
91 Km W of Chieti (51815 inhabitants)
94 Km W of Pescara (121014 inhabitants)
100 Km NE of Pomezia (62966 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 2.0 1985-04-01
02:00:45
42.46 13.07 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 3849
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-01 02:00:45 ± 0.33
Latitude 42.46 ± 0.03
Longitude 13.07 ± 0.03
Depth (km) 10 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 3849

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) 3917
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
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) 0.0013
Epicentral distance of station farthest from the epicenter (degree) 0.00931
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

Field Value
Value 2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 3849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AR1.Z. 1985-04-01T02:01:20.00 10.0 undecidable manual SN 354 0.0093 -0.5 0.5
--.AS1.Z. 1985-04-01T02:01:09.00 10.0 undecidable manual SG 332 0.006 0.12 0.7
--.AR1.Z. 1985-04-01T02:01:07.00 10.0 undecidable manual PN 354 0.0093 1.34 0.4
--.AS1.Z. 1985-04-01T02:00:57.50 10.0 undecidable manual PG 332 0.006 -1.45 0.4
--.PO9.Z. 1985-04-01T02:00:53.00 10.0 undecidable manual SG 319 0.0013 1 0.4
--.MNS.Z. 1985-04-01T02:00:52.00 10.0 undecidable manual PG 254 0.0027 0 1.9
--.AQU.Z. 1985-04-01T02:00:51.50 10.0 undecidable manual PG 113 0.0023 0.04 1.8
--.PO9.Z. 1985-04-01T02:00:49.00 10.0 undecidable manual PG 319 0.0013 -0.2 1.9
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