Earthquake with magnitude of Md 3.4 on date 19-05-1985 and time 11:24:27 (Italy) in region 3 km S L'Aquila (AQ)

A magnitude Md 3.4 earthquake occured in region: 3 km S L'Aquila (AQ), on

  • 19-05-1985 09:24:27 (UTC)
  • 19-05-1985 11:24:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.33, 13.4 at 9 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
L'Aquila AQ 3 69753 69753
Lucoli AQ 6 1011 70764
Ocre AQ 8 1167 71931
Fossa AQ 9 721 72652
Tornimparte AQ 9 3187 75839
Sant'Eusanio Forconese AQ 12 394 76233
Poggio Picenze AQ 12 1136 77369
Scoppito AQ 12 3727 81096
Rocca di Cambio AQ 13 533 81629
Villa Sant'Angelo AQ 13 424 82053
San Demetrio ne' Vestini AQ 14 1854 83907
Pizzoli AQ 15 4326 88233
Barisciano AQ 16 1828 90061
Barete AQ 17 737 90798
Rocca di Mezzo AQ 17 1526 92324
Fagnano Alto AQ 17 418 92742
Prata d'Ansidonia AQ 18 496 93238
Borgorose RI 20 4591 97829

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km S of L'Aquila (69753 inhabitants)
45 Km SW of Teramo (54892 inhabitants)
64 Km W of Chieti (51815 inhabitants)
64 Km NE of Tivoli (56533 inhabitants)
65 Km W of Montesilvano (53738 inhabitants)
66 Km NE of Guidonia Montecelio (88673 inhabitants)
67 Km E of Terni (111501 inhabitants)
69 Km W of Pescara (121014 inhabitants)
88 Km NE of Velletri (53303 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
90 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 3.4
ML-VAX 3.1
1985-05-19
09:24:27
42.33 13.4 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 6569
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-05-19 09:24:27 ± 0.266
Latitude 42.33 ± 0.02
Longitude 13.40 ± 0.03
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 6569

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) 3630.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
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) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00016
Epicentral distance of station farthest from the epicenter (degree) 0.03529
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

Md:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations 8
Type of magnitude Md
Reference to an origin 6569
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:10:54

ML:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 6569
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. 1985-05-19T09:25:29.00 10.0 undecidable manual PN 342 0.0353 1.04 0.2
--.AS1.Z. 1985-05-19T09:25:01.00 10.0 undecidable manual SG 323 0.0082 1.63 0.1
--.CH1.Z. 1985-05-19T09:24:57.40 10.0 undecidable manual PN 321 0.0151 0.29 1
--.AR1.Z. 1985-05-19T09:24:52.00 10.0 positive manual PN 344 0.0109 1.2 0.4
--.SGG.Z. 1985-05-19T09:24:51.60 10.0 undecidable manual PN 141 0.0107 1.13 0.4
--.MSC.Z. 1985-05-19T09:24:50.80 10.0 undecidable manual PN 159 0.0108 0.02 1.3
--.DUI.Z. 1985-05-19T09:24:47.70 10.0 undecidable manual PG 129 0.0092 -0.59 1
--.AS1.Z. 1985-05-19T09:24:46.00 10.0 positive manual PG 323 0.0082 -0.08 2.8
--.PO9.Z. 1985-05-19T09:24:44.00 10.0 undecidable manual SG 306 0.0037 0.65 0.4
--.CM2.Z. 1985-05-19T09:24:44.30 10.0 undecidable manual PG 347 0.0079 -1.2 0.4
--.RDP.Z. 1985-05-19T09:24:43.00 10.0 undecidable manual PG 221 0.0068 -0.21 1.4
--.MNS.Z. 1985-05-19T09:24:37.60 10.0 undecidable manual PG 276 0.0048 -1.36 0.3
--.ALP.Z. 1985-05-19T09:24:37.00 10.0 undecidable manual PG 15 0.0042 -0.82 1.7
--.PO9.Z. 1985-05-19T09:24:36.70 10.0 undecidable manual PG 306 0.0037 -0.13 1.4
--.AQU.Z. 1985-05-19T09:24:32.00 10.0 undecidable manual SG 9 0.0002 0.78 0.3
--.AQU.Z. 1985-05-19T09:24:30.00 10.0 positive manual PG 9 0.0002 0.18 2.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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