Earthquake with magnitude of Md 2.7 on date 23-03-1994 and time 06:31:15 (Italy) in region Costa Marchigiana Anconetana (Ancona)

A magnitude Md 2.7 earthquake occured in region: Costa Marchigiana Anconetana (Ancona), on

  • 23-03-1994 05:31:15 (UTC)
  • 23-03-1994 06:31:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.7, 13.36 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
Montemarciano AN 8 9992 9992
Falconara Marittima AN 9 26565 36557
Senigallia AN 11 45027 81584
Chiaravalle AN 12 14796 96380
Monte San Vito AN 13 6848 103228
Camerata Picena AN 14 2567 105795
Ancona AN 16 100861 206656
Morro d'Alba AN 16 1903 208559
Monsano AN 18 3405 211964
Agugliano AN 18 4865 216829
San Marcello AN 19 2057 218886
Ostra AN 19 6875 225761
Polverigi AN 20 4508 230269

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NW of Ancona (100861 inhabitants)
31 Km SE of Fano (60888 inhabitants)
43 Km SE of Pesaro (94582 inhabitants)
75 Km SE of Rimini (147750 inhabitants)
98 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 2.7
ML-VAX 1.7
1994-03-23
05:31:15
43.7 13.36 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 206839
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-03-23 05:31:15 ± 0.733
Latitude 43.70 ± 0.03
Longitude 13.36 ± 0.06
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 206839

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) 5358.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 271
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
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) 0.00324
Epicentral distance of station farthest from the epicenter (degree) 0.01263
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 206839
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:14:49

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 206839
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
--.PGD.Z. 1994-03-23T05:31:58.13 10.0 undecidable manual SN! 278 0.0107 2.58 0
--.SFI.Z. 1994-03-23T05:31:54.67 10.0 undecidable manual SN 280 0.01 1.15 0.2
--.CRE.Z. 1994-03-23T05:31:51.50 10.0 undecidable manual SG 265 0.0091 0.53 0.6
--.ASS.Z. 1994-03-23T05:31:45.42 10.0 undecidable manual SG 218 0.0074 0.9 0.4
--.MNS.Z. 1994-03-23T05:31:42.52 10.0 undecidable manual PN 200 0.0126 1.04 0.6
--.RSM.Z. 1994-03-23T05:31:41.92 10.0 undecidable manual SG 289 0.0062 1.51 0.1
--.PGD.Z. 1994-03-23T05:31:37.99 10.0 undecidable manual PN 278 0.0107 -0.56 1.3
--.SFI.Z. 1994-03-23T05:31:36.84 10.0 undecidable manual PN 280 0.01 -0.53 1.4
--.CRE.Z. 1994-03-23T05:31:35.27 10.0 undecidable manual PG 265 0.0091 -0.64 1.3
--.ASS.Z. 1994-03-23T05:31:32.20 10.0 undecidable manual PG 218 0.0074 -0.16 2
--.RSM.Z. 1994-03-23T05:31:29.82 10.0 undecidable manual PG 289 0.0062 0.01 2.1
--.ARV.Z. 1994-03-23T05:31:28.39 10.0 undecidable manual SG 235 0.0032 -1.01 0.3
--.ARV.Z. 1994-03-23T05:31:23.40 10.0 undecidable manual PG 235 0.0032 -0.41 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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