Earthquake with magnitude of Md 2.5 on date 07-04-1985 and time 08:57:10 (Italy) in region Costa Marchigiana Maceratese (Macerata)

A magnitude Md 2.5 earthquake occured in region: Costa Marchigiana Maceratese (Macerata), on

  • 07-04-1985 06:57:10 (UTC)
  • 07-04-1985 08:57:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5290, 13.8660 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
Porto Recanati MC 20 12531 12531
Numana AN 20 3775 16306

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Ancona (100861 inhabitants)
77 Km E of Fano (60888 inhabitants)
88 Km E of Pesaro (94582 inhabitants)
98 Km N of Teramo (54892 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 2.5 1985-04-07
06:57:10
43.529 13.866 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 4279
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-07 06:57:10 ± 0.787
Latitude 43.5290 ± 0.0395
Longitude 13.8660 ± 0.0489
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 4279

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) 5897.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 264
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00170
Epicentral distance of station farthest from the epicenter (degree) 0.01635
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 4279
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.AS1.Z. 1985-04-07T06:57:45.50 10.0 undecidable manual SG 242 0.9879 1.01 0.4
--.SD1.Z. 1985-04-07T06:57:41.50 10.0 undecidable manual PN 181 1.8204 -0.07 1.2
--.MNS.Z. 1985-04-07T06:57:38.00 10.0 undecidable manual PN 217 1.4319 1.71 0.2
--.ALP.Z. 1985-04-07T06:57:36.50 10.0 undecidable manual SG 196 0.777 -0.97 0.6
--.AQU.Z. 1985-04-07T06:57:34.00 10.0 undecidable manual PN 196 1.2099 0.63 1.2
--.AR1.Z. 1985-04-07T06:57:34.50 10.0 undecidable manual SG 267 0.666 0.54 0.6
--.PO9.Z. 1985-04-07T06:57:33.00 10.0 undecidable manual PN 215 1.1544 0.37 1.4
--.AS1.Z. 1985-04-07T06:57:30.50 10.0 undecidable manual PG 242 0.9879 0.36 1.5
--.AR1.Z. 1985-04-07T06:57:24.50 10.0 undecidable manual PG 267 0.666 0.44 1.5
--.ALP.Z. 1985-04-07T06:57:24.60 10.0 undecidable manual PG 196 0.777 -1.49 0.4
--.AM1.Z. 1985-04-07T06:57:18.30 10.0 undecidable manual SG 276 0.1887 -0.32 1
--.AM1.Z. 1985-04-07T06:57:14.30 10.0 undecidable manual PG 276 0.1887 -0.9 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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