Earthquake with magnitude of Md 2.3 on date 03-09-1985 and time 20:55:09 (Italy) in region 2 km S Rocca Santa Maria (TE)

A magnitude Md 2.3 earthquake occured in region: 2 km S Rocca Santa Maria (TE), on

  • 03-09-1985 18:55:09 (UTC)
  • 03-09-1985 20:55:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.67, 13.52 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
Rocca Santa Maria TE 2 537 537
Cortino TE 6 656 1193
Valle Castellana TE 8 977 2170
Torricella Sicura TE 11 2641 4811
Montorio al Vomano TE 13 8218 13029
Fano Adriano TE 13 296 13325
Crognaleto TE 14 1297 14622
Acquasanta Terme AP 14 2916 17538
Campli TE 15 7209 24747
Teramo TE 15 54892 79639
Civitella del Tronto TE 16 5116 84755
Pietracamela TE 17 271 85026
Tossicia TE 17 1406 86432
Campotosto AQ 18 542 86974
Folignano AP 19 9241 96215
Colledara TE 19 2179 98394
Basciano TE 19 2434 100828
Amatrice RI 20 2657 103485

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km W of Teramo (54892 inhabitants)
37 Km N of L'Aquila (69753 inhabitants)
54 Km W of Montesilvano (53738 inhabitants)
61 Km W of Pescara (121014 inhabitants)
64 Km NW of Chieti (51815 inhabitants)
73 Km E of Terni (111501 inhabitants)
74 Km E of Foligno (57155 inhabitants)
99 Km NE of Tivoli (56533 inhabitants)
99 Km NE of Guidonia Montecelio (88673 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 2.3 1985-09-03
18:55:09
42.67 13.53 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 12759
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-09-03 18:55:09 ± 0.52
Latitude 42.67 ± 0.02
Longitude 13.53 ± 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 12759

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) 3834.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 229
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.00834
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 12759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:15:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AR1.Z. 1985-09-03T18:55:42.00 10.0 undecidable manual SG 332 0.0083 0.97 0.2
--.AS1.Z. 1985-09-03T18:55:35.00 10.0 undecidable manual SG 301 0.0067 -0.24 0.6
--.MNS.Z. 1985-09-03T18:55:34.50 10.0 undecidable manual SG? 245 0.0062 1.33 0
--.CM2.Z. 1985-09-03T18:55:30.10 10.0 undecidable manual SG 331 0.0053 -0.07 1
--.AR1.Z. 1985-09-03T18:55:29.00 10.0 undecidable manual PG 332 0.0083 1.38 0.3
--.AS1.Z. 1985-09-03T18:55:23.50 10.0 undecidable manual PG 301 0.0067 -0.77 0.9
--.MNS.Z. 1985-09-03T18:55:23.50 10.0 undecidable manual PG 245 0.0062 0.42 1.4
--.CM2.Z. 1985-09-03T18:55:20.10 10.0 undecidable manual PG 331 0.0053 -1.24 0.5
--.ALP.Z. 1985-09-03T18:55:14.80 10.0 undecidable manual SG 16 0.001 -0.05 1
--.ALP.Z. 1985-09-03T18:55:12.30 10.0 negative manual PG 16 0.001 -0.2 3.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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