Earthquake with magnitude of Md 3.1 on date 22-05-1985 and time 18:48:37 (Italy) in region SE Ocre (AQ)

A magnitude Md 3.1 earthquake occured in region: SE Ocre (AQ), on

  • 22-05-1985 16:48:37 (UTC)
  • 22-05-1985 18:48:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.28, 13.48 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
Ocre AQ 1 1167 1167
Fossa AQ 2 721 1888
Sant'Eusanio Forconese AQ 4 394 2282
Rocca di Cambio AQ 5 533 2815
Villa Sant'Angelo AQ 5 424 3239
San Demetrio ne' Vestini AQ 7 1854 5093
Poggio Picenze AQ 7 1136 6229
Fagnano Alto AQ 9 418 6647
Rocca di Mezzo AQ 9 1526 8173
L'Aquila AQ 10 69753 77926
Prata d'Ansidonia AQ 11 496 78422
Barisciano AQ 11 1828 80250
Lucoli AQ 11 1011 81261
Fontecchio AQ 12 369 81630
Tornimparte AQ 14 3187 84817
San Pio delle Camere AQ 15 661 85478
Tione degli Abruzzi AQ 16 310 85788
Santo Stefano di Sessanio AQ 16 111 85899
Caporciano AQ 16 230 86129
Ovindoli AQ 17 1227 87356
Carapelle Calvisio AQ 17 87 87443
Castelvecchio Calvisio AQ 18 153 87596
Calascio AQ 19 137 87733

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km SE of L'Aquila (69753 inhabitants)
46 Km SW of Teramo (54892 inhabitants)
58 Km W of Chieti (51815 inhabitants)
61 Km W of Montesilvano (53738 inhabitants)
64 Km W of Pescara (121014 inhabitants)
66 Km NE of Tivoli (56533 inhabitants)
69 Km E of Guidonia Montecelio (88673 inhabitants)
75 Km E of Terni (111501 inhabitants)
88 Km NE of Velletri (53303 inhabitants)
92 Km E of Roma (2864731 inhabitants)
98 Km SE of Foligno (57155 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 3.1 1985-05-22
16:48:37
42.28 13.48 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 7069
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-05-22 16:48:37 ± 0.226
Latitude 42.28 ± 0.01
Longitude 13.48 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 7069

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) 2797
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
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) 0.00437
Epicentral distance of station farthest from the epicenter (degree) 0.00842
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:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 7069
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:11:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CM2.Z. 1985-05-22T16:49:10.30 10.0 undecidable manual SG 344 0.0084 0.71 0.2
--.SD1.Z. 1985-05-22T16:49:00.00 10.0 undecidable manual SG 156 0.0056 0.71 0.3
--.PO9.Z. 1985-05-22T16:48:55.50 10.0 undecidable manual SG 306 0.0044 0.43 0.4
--.CM2.Z. 1985-05-22T16:48:55.00 10.0 undecidable manual PG 344 0.0084 -0.98 0.2
--.ALP.Z. 1985-05-22T16:48:55.98 10.0 undecidable manual SG 7 0.0045 0.52 0.5
--.SD1.Z. 1985-05-22T16:48:50.00 10.0 undecidable manual PG 156 0.0056 -0.03 1.6
--.ALP.Z. 1985-05-22T16:48:47.70 10.0 undecidable manual PG 7 0.0045 -0.12 3.2
--.PO9.Z. 1985-05-22T16:48:47.50 10.0 undecidable manual PG 306 0.0044 -0.09 1.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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