Earthquake with magnitude of Md 3.2 on date 21-05-1985 and time 09:02:57 (Italy) in region 2 km W Ocre (AQ)

A magnitude Md 3.2 earthquake occured in region: 2 km W Ocre (AQ), on

  • 21-05-1985 07:02:57 (UTC)
  • 21-05-1985 09:02:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.29, 13.45 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 2 1167 1167
Fossa AQ 3 721 1888
Sant'Eusanio Forconese AQ 6 394 2282
Rocca di Cambio AQ 7 533 2815
Villa Sant'Angelo AQ 7 424 3239
Poggio Picenze AQ 8 1136 4375
L'Aquila AQ 8 69753 74128
San Demetrio ne' Vestini AQ 9 1854 75982
Lucoli AQ 10 1011 76993
Rocca di Mezzo AQ 11 1526 78519
Fagnano Alto AQ 11 418 78937
Barisciano AQ 12 1828 80765
Tornimparte AQ 13 3187 83952
Prata d'Ansidonia AQ 13 496 84448
Fontecchio AQ 14 369 84817
San Pio delle Camere AQ 17 661 85478
Santo Stefano di Sessanio AQ 17 111 85589
Tione degli Abruzzi AQ 18 310 85899
Ovindoli AQ 18 1227 87126
Caporciano AQ 18 230 87356
Scoppito AQ 19 3727 91083
Carapelle Calvisio AQ 19 87 91170
Castelvecchio Calvisio AQ 20 153 91323

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km SE of L'Aquila (69753 inhabitants)
46 Km SW of Teramo (54892 inhabitants)
59 Km W of Chieti (51815 inhabitants)
62 Km W of Montesilvano (53738 inhabitants)
65 Km NE of Tivoli (56533 inhabitants)
66 Km W of Pescara (121014 inhabitants)
68 Km E of Guidonia Montecelio (88673 inhabitants)
73 Km E of Terni (111501 inhabitants)
87 Km NE of Velletri (53303 inhabitants)
91 Km E of Roma (2864731 inhabitants)
96 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 3.2
ML-VAX 2.8
1985-05-21
07:02:57
42.29 13.45 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 7059
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-05-21 07:02:57 ± 0.27
Latitude 42.29 ± 0.02
Longitude 13.45 ± 0.03
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 7059

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) 3318.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.00065
Epicentral distance of station farthest from the epicenter (degree) 0.01554
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

Md:3.2

Field Value
Value 3.2
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 7059
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:11:18

ML:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 7059
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AS1.Z. 1985-05-21T07:03:30.50 10.0 undecidable manual SG 322 0.0087 0.23 0.5
--.CH1.Z. 1985-05-21T07:03:28.20 10.0 undecidable manual PN 320 0.0155 1.18 0.2
--.MA1.Z. 1985-05-21T07:03:26.50 10.0 undecidable manual PN 275 0.0153 -0.13 1
--.AR1.Z. 1985-05-21T07:03:20.80 10.0 undecidable manual PN 342 0.0113 0.2 1.1
--.SD1.Z. 1985-05-21T07:03:20.80 10.0 undecidable manual SG 155 0.0057 1.2 0.2
--.AM1.Z. 1985-05-21T07:03:20.60 10.0 undecidable manual PN 4 0.0113 0 1.2
--.DUI.Z. 1985-05-21T07:03:16.00 10.0 undecidable manual PG 129 0.0087 -0.41 1.1
--.ALP.Z. 1985-05-21T07:03:16.29 10.0 undecidable manual SG 9 0.0045 1.23 0.2
--.AS1.Z. 1985-05-21T07:03:15.30 10.0 undecidable manual PG 322 0.0087 -0.98 0.5
--.PO9.Z. 1985-05-21T07:03:15.50 10.0 undecidable manual SG 307 0.0042 1.23 0.2
--.CM2.Z. 1985-05-21T07:03:14.10 10.0 undecidable manual PG 345 0.0083 -1.44 0.2
--.SD1.Z. 1985-05-21T07:03:09.80 10.0 undecidable manual PG 155 0.0057 -0.32 1.3
--.ALP.Z. 1985-05-21T07:03:07.33 10.0 positive manual PG 9 0.0045 -0.18 2.8
--.PO9.Z. 1985-05-21T07:03:06.50 10.0 positive manual PG 307 0.0042 -0.55 2.1
--.AQU.Z. 1985-05-21T07:03:02.00 10.0 undecidable manual SG 329 0.0006 0.34 0.8
--.AQU.Z. 1985-05-21T07:03:00.10 10.0 positive manual PG 329 0.0006 0.33 2.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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