Earthquake with magnitude of Md 2.2 on date 24-02-1985 and time 21:48:00 (UTC) in region 7 km SW Isola del Gran Sasso d'Italia (TE)

A magnitude Md 2.2 earthquake occured in region: 7 km SW Isola del Gran Sasso d'Italia (TE), on

  • 24-02-1985 21:48:00 (UTC)
  • 24-02-1985 22:48:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.47, 13.6 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
Isola del Gran Sasso d'Italia TE 7 4773 4773
Pietracamela TE 7 271 5044
Tossicia TE 10 1406 6450
Castelli TE 10 1159 7609
Colledara TE 10 2179 9788
Fano Adriano TE 10 296 10084
Castel Castagna TE 13 500 10584
Crognaleto TE 13 1297 11881
Montorio al Vomano TE 13 8218 20099
Santo Stefano di Sessanio AQ 15 111 20210
Castel del Monte AQ 16 413 20623
Barisciano AQ 16 1828 22451
Arsita TE 16 829 23280
Poggio Picenze AQ 17 1136 24416
Calascio AQ 18 137 24553
Bisenti TE 18 1952 26505
Basciano TE 18 2434 28939
Cortino TE 18 656 29595
Farindola PE 19 1518 31113
Castelvecchio Calvisio AQ 19 153 31266
Penna Sant'Andrea TE 20 1698 32964

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NE of L'Aquila (69753 inhabitants)
23 Km SW of Teramo (54892 inhabitants)
46 Km W of Montesilvano (53738 inhabitants)
49 Km W of Chieti (51815 inhabitants)
51 Km W of Pescara (121014 inhabitants)
79 Km E of Terni (111501 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
91 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 2.2 1985-02-24
21:48:00
42.47 13.6 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 2419
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-24 21:48:00 ± 0.816
Latitude 42.47 ± 0.02
Longitude 13.60 ± 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 2419

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) 6121.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 255
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.00712
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 2419
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:07:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CM8.Z. 1985-02-24T21:48:29.10 10.0 undecidable manual SG 335 0.0071 0.67 0.2
--.CM8.Z. 1985-02-24T21:48:16.30 10.0 undecidable manual PG 335 0.0071 -0.52 0.5
--.PO9.Z. 1985-02-24T21:48:11.00 10.0 undecidable manual PG 282 0.0044 -0.23 1.3
--.AQU.Z. 1985-02-24T21:48:08.50 10.0 undecidable manual SG 230 0.0016 -0.35 0.6
--.AQU.Z. 1985-02-24T21:48:05.80 10.0 undecidable manual PG 230 0.0016 0.27 2.4
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