Earthquake with magnitude of Md 2.2 on date 25-03-1985 and time 23:01:05 (UTC) in region 4 km NE Micigliano (RI)

A magnitude Md 2.2 earthquake occured in region: 4 km NE Micigliano (RI), on

  • 25-03-1985 23:01:05 (UTC)
  • 26-03-1985 00:01:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.48, 13.08 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 4 127 127
Posta RI 5 694 821
Borbona RI 5 617 1438
Antrodoco RI 7 2588 4026
Borgo Velino RI 9 972 4998
Castel Sant'Angelo RI 11 1308 6306
Cagnano Amiterno AQ 12 1369 7675
Leonessa RI 13 2435 10110
Montereale AQ 14 2581 12691
Cantalice RI 15 2755 15446
Cittaducale RI 16 6828 22274
Cittareale RI 16 482 22756
Poggio Bustone RI 16 2055 24811
Barete AQ 17 737 25548
Pizzoli AQ 18 4326 29874
Capitignano AQ 18 665 30539
Scoppito AQ 19 3727 34266
Rivodutri RI 19 1253 35519
Concerviano RI 20 291 35810

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of L'Aquila (69753 inhabitants)
37 Km E of Terni (111501 inhabitants)
54 Km W of Teramo (54892 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
61 Km NE of Guidonia Montecelio (88673 inhabitants)
62 Km NE of Tivoli (56533 inhabitants)
81 Km E of Viterbo (67173 inhabitants)
82 Km NE of Roma (2864731 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
90 Km SE of Perugia (166134 inhabitants)
90 Km W of Chieti (51815 inhabitants)
92 Km N of Velletri (53303 inhabitants)
93 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
Rev 1000 Md 2.2 1985-03-25
23:01:05
42.48 13.09 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 3639
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-03-25 23:01:05 ± 0.447
Latitude 42.48 ± 0.04
Longitude 13.09 ± 0.04
Depth (km) 10 ± 22 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 3639

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) 4971.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00915
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 3639
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AR1.Z. 1985-03-25T23:01:27.00 10.0 undecidable manual PG 354 0.0091 1.13 0.2
--.AS1.Z. 1985-03-25T23:01:27.00 10.0 undecidable manual SG 331 0.0059 -1.94 0
--.AS1.Z. 1985-03-25T23:01:19.00 10.0 undecidable manual PG 331 0.0059 -0.19 1.1
--.MNS.Z. 1985-03-25T23:01:18.50 10.0 undecidable manual SG 251 0.0028 0.63 0.4
--.PO9.Z. 1985-03-25T23:01:12.50 10.0 undecidable manual SG 310 0.0012 0.26 0.8
--.MNS.Z. 1985-03-25T23:01:12.50 10.0 undecidable manual PG 251 0.0028 -0.3 1.3
--.AQU.Z. 1985-03-25T23:01:11.50 10.0 undecidable manual PG 118 0.0023 -0.43 1.2
--.PO9.Z. 1985-03-25T23:01:09.50 10.0 positive manual PG 310 0.0012 -0.05 2.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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