Earthquake with magnitude of Md 2.3 on date 06-09-1989 and time 12:52:45 (Italy) in region 5 km SW Ancona (AN)

A magnitude Md 2.3 earthquake occured in region: 5 km SW Ancona (AN), on

  • 06-09-1989 10:52:45 (UTC)
  • 06-09-1989 12:52:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5900, 13.4760 at 5 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
Ancona AN 5 100861 100861
Offagna AN 7 1935 102796
Falconara Marittima AN 8 26565 129361
Agugliano AN 9 4865 134226
Camerano AN 9 7322 141548
Polverigi AN 10 4508 146056
Camerata Picena AN 10 2567 148623
Osimo AN 12 34977 183600
Chiaravalle AN 12 14796 198396
Sirolo AN 13 4051 202447
Montemarciano AN 14 9992 212439
Numana AN 15 3775 216214
Castelfidardo AN 15 18733 234947
Monte San Vito AN 17 6848 241795
Santa Maria Nuova AN 17 4179 245974
Monsano AN 18 3405 249379
Loreto AN 20 12814 262193
Filottrano AN 20 9499 271692
Montefano MC 20 3541 275233

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km SW of Ancona (100861 inhabitants)
46 Km SE of Fano (60888 inhabitants)
58 Km SE of Pesaro (94582 inhabitants)
90 Km SE of Rimini (147750 inhabitants)
94 Km NE 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
Bulletin
Rev1000
Md 2.3
ML-VAX 1.7
1989-09-06
10:52:45
43.59 13.476 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 98939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-09-06 10:52:45 ± 0.324
Latitude 43.5900 ± 0.0294
Longitude 13.4760 ± 0.0098
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 98939

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) 3360.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 202
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) 0.00089
Epicentral distance of station farthest from the epicenter (degree) 0.00988
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 98939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:32:26

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 98939
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(km) Takeoff_angle Residual Weight
--.ASS.Z. 1989-09-06T10:53:14.31 10.0 undecidable manual SG 228 0.7881 0.29 0.6
--.CRE.Z. 1989-09-06T10:53:08.60 10.0 undecidable manual PN 272 1.0989 0.53 0.8
--.ASS.Z. 1989-09-06T10:53:02.40 10.0 undecidable manual PG 228 0.7881 0.41 1.2
--.ARV.Z. 1989-09-06T10:53:00.45 10.0 undecidable manual SG 256 0.3996 -0.43 0.6
--.ARV.Z. 1989-09-06T10:52:53.73 10.0 undecidable manual PG 256 0.3996 -0.67 0.8
--.AM8.Z. 1989-09-06T10:52:49.53 10.0 undecidable manual SG 114 0.0999 -0.23 0.8
--.AM8.Z. 1989-09-06T10:52:47.86 10.0 undecidable manual PG 114 0.0999 -0.11 2.3
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