Earthquake with magnitude of Md 3.5 on date 23-05-1985 and time 03:04:17 (Italy) in region 3 km E Lucoli (AQ)

A magnitude Md 3.5 earthquake occured in region: 3 km E Lucoli (AQ), on

  • 23-05-1985 01:04:17 (UTC)
  • 23-05-1985 03:04:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3, 13.38 at 5 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
Lucoli AQ 4 1011 1011
L'Aquila AQ 6 69753 70764
Tornimparte AQ 7 3187 73951
Ocre AQ 8 1167 75118
Fossa AQ 9 721 75839
Rocca di Cambio AQ 12 533 76372
Sant'Eusanio Forconese AQ 12 394 76766
Scoppito AQ 13 3727 80493
Villa Sant'Angelo AQ 14 424 80917
Poggio Picenze AQ 14 1136 82053
San Demetrio ne' Vestini AQ 15 1854 83907
Rocca di Mezzo AQ 16 1526 85433
Pizzoli AQ 17 4326 89759
Borgorose RI 17 4591 94350
Fagnano Alto AQ 17 418 94768
Barisciano AQ 18 1828 96596
Barete AQ 19 737 97333
Prata d'Ansidonia AQ 19 496 97829

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km S of L'Aquila (69753 inhabitants)
48 Km SW of Teramo (54892 inhabitants)
61 Km NE of Tivoli (56533 inhabitants)
63 Km NE of Guidonia Montecelio (88673 inhabitants)
65 Km W of Chieti (51815 inhabitants)
67 Km E of Terni (111501 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
71 Km W of Pescara (121014 inhabitants)
84 Km NE of Velletri (53303 inhabitants)
87 Km NE of Roma (2864731 inhabitants)
91 Km SE of Foligno (57155 inhabitants)
99 Km NE of Aprilia (73446 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 3.5
ML-VAX 4.0
1985-05-23
01:04:17
42.3 13.38 5 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 7089
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-05-23 01:04:17 ± 0.523
Latitude 42.30 ± 0.02
Longitude 13.38 ± 0.03
Depth (km) 5 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 7089

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) 3136.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.9
Epicentral distance of station closest to the epicenter (degree) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.03877
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitudes information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 7089
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:11:20

ML:4

Field Value
Value 4
Uncertainty
Num. used stations 6
Type of magnitude ML
Reference to an origin 7089
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
--.CTI.Z. 1985-05-23T01:06:03.00 10.0 undecidable manual SN 342 0.0355 0.43 0.6
--.PS9.Z. 1985-05-23T01:05:27.00 10.0 undecidable manual SN 305 0.0227 -1.79 0.1
--.FO1.Z. 1985-05-23T01:05:24.20 10.0 undecidable manual PN 354 0.0388 1.18 0.5
--.RBL.Z. 1985-05-23T01:05:22.00 10.0 undecidable manual PN 1 0.0372 1.34 0.4
--.LCI.Z. 1985-05-23T01:05:21.00 10.0 undecidable manual PN 117 0.0365 1.43 0.4
--.CTI.Z. 1985-05-23T01:05:18.80 10.0 positive manual PN 342 0.0355 0.82 1.5
--.SAL.Z. 1985-05-23T01:05:18.40 10.0 undecidable manual PN 329 0.035 1.16 0.5
--.TRI.Z. 1985-05-23T01:05:11.00 10.0 undecidable manual PN 4 0.0307 0.26 1.1
--.BRT.Z. 1985-05-23T01:05:08.20 10.0 negative manual PN 115 0.0284 1.02 1.5
--.ORI.Z. 1985-05-23T01:05:06.50 10.0 undecidable manual PN 133 0.029 -1.55 0.4
--.BAI.Z. 1985-05-23T01:05:04.00 10.0 undecidable manual PN 113 0.0258 0.75 1
--.BD1.Z. 1985-05-23T01:05:01.50 10.0 undecidable manual PN 311 0.0241 0.81 1
--.PS9.Z. 1985-05-23T01:05:00.00 10.0 undecidable manual PN 305 0.0227 1.52 0.5
--.AR1.Z. 1985-05-23T01:04:58.00 10.0 undecidable manual SN 345 0.0111 -0.24 0.9
--.SGO.Z. 1985-05-23T01:04:55.00 10.0 undecidable manual PN 139 0.0203 0.11 1.4
--.TR9.Z. 1985-05-23T01:04:50.60 10.0 undecidable manual PN 131 0.0168 1.15 0.8
--.MS1.Z. 1985-05-23T01:04:50.00 10.0 undecidable manual PN 106 0.0179 -1.21 0.7
--.CM2.Z. 1985-05-23T01:04:50.30 10.0 undecidable manual SG 349 0.0081 1.31 0.4
--.AS1.Z. 1985-05-23T01:04:50.00 10.0 undecidable manual SG 325 0.0083 0.31 0.9
--.CH1.Z. 1985-05-23T01:04:47.20 10.0 undecidable manual PN 322 0.0151 0.18 1.5
--.SOR.Z. 1985-05-23T01:04:47.90 10.0 undecidable manual PN 157 0.0167 -1.49 0.5
--.OVO.Z. 1985-05-23T01:04:46.60 10.0 undecidable manual PN 152 0.0149 -0.01 1.5
--.MA1.Z. 1985-05-23T01:04:46.20 10.0 positive manual PN 274 0.0148 -0.25 2.9
--.AM1.Z. 1985-05-23T01:04:41.10 10.0 undecidable manual PN 7 0.0113 -0.02 1.5
--.AR1.Z. 1985-05-23T01:04:40.60 10.0 undecidable manual PN 345 0.0111 -0.24 1.4
--.MSC.Z. 1985-05-23T01:04:38.70 10.0 undecidable manual PN 158 0.0107 -1.52 0.5
--.AS1.Z. 1985-05-23T01:04:35.00 10.0 positive manual PG 325 0.0083 -0.9 2
--.ALP.Z. 1985-05-23T01:04:35.13 10.0 undecidable manual SG 16 0.0045 -0.72 0.7
--.PO9.Z. 1985-05-23T01:04:34.50 10.0 undecidable manual SG 310 0.0037 1.08 0.5
--.CM2.Z. 1985-05-23T01:04:34.00 10.0 positive manual PG 349 0.0081 -1.5 1
--.PO9.Z. 1985-05-23T01:04:26.00 10.0 positive manual PG 310 0.0037 -0.51 2.6
--.ALP.Z. 1985-05-23T01:04:26.38 10.0 positive manual PG 16 0.0045 -1.53 1
--.AQU.Z. 1985-05-23T01:04:19.80 10.0 undecidable manual PG 17 0.0005 1.09 0.9
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