Earthquake with magnitude of Md 2.3 on date 23-07-1985 and time 11:34:36 (UTC) in region 5 km E Lucoli (AQ)

A magnitude Md 2.3 earthquake occured in region: 5 km E Lucoli (AQ), on

  • 23-07-1985 11:34:36 (UTC)
  • 23-07-1985 13:34:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3010, 13.4020 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
Lucoli AQ 5 1011 1011
L'Aquila AQ 6 69753 70764
Ocre AQ 6 1167 71931
Fossa AQ 7 721 72652
Tornimparte AQ 8 3187 75839
Rocca di Cambio AQ 10 533 76372
Sant'Eusanio Forconese AQ 10 394 76766
Villa Sant'Angelo AQ 12 424 77190
Poggio Picenze AQ 12 1136 78326
San Demetrio ne' Vestini AQ 13 1854 80180
Rocca di Mezzo AQ 14 1526 81706
Scoppito AQ 14 3727 85433
Fagnano Alto AQ 15 418 85851
Barisciano AQ 16 1828 87679
Prata d'Ansidonia AQ 17 496 88175
Pizzoli AQ 18 4326 92501
Borgorose RI 18 4591 97092
Fontecchio AQ 19 369 97461
Barete AQ 20 737 98198

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km S of L'Aquila (69753 inhabitants)
47 Km SW of Teramo (54892 inhabitants)
62 Km NE of Tivoli (56533 inhabitants)
63 Km W of Chieti (51815 inhabitants)
65 Km NE of Guidonia Montecelio (88673 inhabitants)
66 Km W of Montesilvano (53738 inhabitants)
68 Km E of Terni (111501 inhabitants)
69 Km W of Pescara (121014 inhabitants)
86 Km NE of Velletri (53303 inhabitants)
88 Km NE of Roma (2864731 inhabitants)
93 Km SE of Foligno (57155 inhabitants)
100 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
Bulletin
Rev1000
Md 2.3 1985-07-23
11:34:36
42.301 13.402 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 10659
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-07-23 11:34:36 ± 0.543
Latitude 42.3010 ± 0.0347
Longitude 13.4020 ± 0.0544
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 10659

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) 5901.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00040
Epicentral distance of station farthest from the epicenter (degree) 0.00591
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 10659
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:14:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SD1.Z. 1985-07-23T11:35:01.50 10.0 undecidable manual SG 152 0.6549 1.89 0.1
--.ALP.Z. 1985-07-23T11:34:55.00 10.0 undecidable manual SG 14 0.4884 0.85 0.4
--.SD1.Z. 1985-07-23T11:34:48.50 10.0 undecidable manual PG 152 0.6549 -1.29 0.5
--.MNS.Z. 1985-07-23T11:34:47.50 10.0 undecidable manual PG 279 0.5328 0.05 1.7
--.ALP.Z. 1985-07-23T11:34:45.90 10.0 undecidable manual PG 14 0.4884 -0.73 1.3
--.AQU.Z. 1985-07-23T11:34:40.50 10.0 undecidable manual SG 0 0.0444 0.12 1.2
--.AQU.Z. 1985-07-23T11:34:39.00 10.0 undecidable manual PG 0 0.0444 0.32 1.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download