ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Md 2.5 on date 10-08-1985 and time 23:34:08 (Italy) in region Costa Abruzzese Teramo (Teramo)

A magnitude Md 2.5 earthquake occured in region: Costa Abruzzese Teramo (Teramo), on

  • 10-08-1985 21:34:08 (UTC)
  • 10-08-1985 23:34:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.76, 14.06 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
Giulianova TE 9 24050 24050
Roseto degli Abruzzi TE 9 25537 49587
Tortoreto TE 13 11542 61129
Mosciano Sant'Angelo TE 14 9308 70437
Alba Adriatica TE 15 12353 82790
Morro d'Oro TE 16 3661 86451
Pineto TE 16 14904 101355
Notaresco TE 18 6907 108262
Martinsicuro TE 19 16033 124295

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km N of Montesilvano (53738 inhabitants)
31 Km E of Teramo (54892 inhabitants)
35 Km NW of Pescara (121014 inhabitants)
46 Km N of Chieti (51815 inhabitants)
71 Km NE of L'Aquila (69753 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 2.5 1985-08-10
21:34:08
42.76 14.06 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 11469
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-10 21:34:08 ± 0.833
Latitude 42.76 ± 0.03
Longitude 14.06 ± 0.07
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 11469

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) 7079.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 247
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.0072
Epicentral distance of station farthest from the epicenter (degree) 0.01263
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 11469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:14:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CM2.Z. 1985-08-10T21:34:36.30 10.0 undecidable manual SG 302 0.0072 -0.01 1.1
--.RDP.Z. 1985-08-10T21:34:35.00 10.0 undecidable manual PN? 224 0.0126 0.97 0.1
--.MNS.Z. 1985-08-10T21:34:30.00 10.0 undecidable manual PN? 249 0.0097 0.45 0.4
--.AS1.Z. 1985-08-10T21:34:30.00 10.0 undecidable manual PN 286 0.0096 0.54 0.9
--.SD1.Z. 1985-08-10T21:34:28.50 10.0 undecidable manual PN? 189 0.0096 -0.77 0.2
--.PO9.Z. 1985-08-10T21:34:25.00 10.0 undecidable manual PG 257 0.0075 -0.38 1.3
--.CM2.Z. 1985-08-10T21:34:24.30 10.0 undecidable manual PG 302 0.0072 -0.3 3
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