Earthquake with magnitude of Md 2.7 on date 06-12-1987 and time 15:14:42 (Italy) in region Costa Marchigiana Anconetana (Ancona)

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

  • 06-12-1987 14:14:42 (UTC)
  • 06-12-1987 15:14:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.943, 13.45 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Fano (60888 inhabitants)
37 Km N of Ancona (100861 inhabitants)
43 Km E of Pesaro (94582 inhabitants)
72 Km E of Rimini (147750 inhabitants)
99 Km E of Cesena (96758 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 2.0
1987-12-06
14:14:42
43.943 13.45 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 59349
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-12-06 14:14:42 ± 0.589
Latitude 43.9430 ± 0.0254
Longitude 13.4500 ± 0.0484
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 59349

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) 4798.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 194
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00364
Epicentral distance of station farthest from the epicenter (degree) 0.0221
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 59349
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:56:43

ML:2

Field Value
Value 2
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 59349
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
--.CTI.Z. 1987-12-06T14:15:51.00 10.0 undecidable manual SN 329 0.0221 -1.46 0.2
--.MNS.Z. 1987-12-06T14:15:34.00 10.0 undecidable manual SN 200 0.0149 0.61 0.6
--.CTI.Z. 1987-12-06T14:15:23.47 10.0 undecidable manual PN 329 0.0221 0.71 1
--.CRE.Z. 1987-12-06T14:15:21.00 10.0 undecidable manual SN 253 0.0101 0.13 0.9
--.ASS.Z. 1987-12-06T14:15:19.00 10.0 undecidable manual SG 213 0.0095 0.14 0.9
--.MNS.Z. 1987-12-06T14:15:12.50 10.0 undecidable manual PN 200 0.0149 0.75 1.3
--.CM8.Z. 1987-12-06T14:15:11.89 10.0 undecidable manual SG 196 0.007 1.79 0.1
--.CRE.Z. 1987-12-06T14:15:05.00 10.0 undecidable manual PN 253 0.0101 0.48 1.9
--.ASS.Z. 1987-12-06T14:15:03.50 10.0 undecidable manual PG 213 0.0095 0.14 2.1
--.ARV.Z. 1987-12-06T14:15:02.00 10.0 undecidable manual SG 219 0.0051 -1.52 0.3
--.AM8.Z. 1987-12-06T14:14:58.90 10.0 undecidable manual SG 164 0.0036 0.86 0.6
--.CM8.Z. 1987-12-06T14:14:56.32 10.0 undecidable manual PG 196 0.007 -1.98 0.3
--.ARV.Z. 1987-12-06T14:14:54.50 10.0 undecidable manual PG 219 0.0051 0 2.2
--.AM8.Z. 1987-12-06T14:14:50.73 10.0 undecidable manual PG 164 0.0036 -0.61 1.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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