Earthquake with magnitude of Md 3.0 on date 07-04-1985 and time 05:30:47 (UTC) in region Costa Marchigiana Maceratese (Macerata)

A magnitude Md 3.0 earthquake occured in region: Costa Marchigiana Maceratese (Macerata), on

  • 07-04-1985 05:30:47 (UTC)
  • 07-04-1985 07:30:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.42, 13.7 at 7 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 3 12531 12531
Loreto AN 8 12814 25345
Potenza Picena MC 9 15936 41281
Numana AN 12 3775 45056
Recanati MC 12 21349 66405
Montecosaro MC 13 7113 73518
Castelfidardo AN 13 18733 92251
Civitanova Marche MC 13 41983 134234
Sirolo AN 13 4051 138285
Montelupone MC 14 3596 141881
Morrovalle MC 15 10195 152076
Camerano AN 17 7322 159398
Osimo AN 19 34977 194375
Porto Sant'Elpidio FM 19 26152 220527

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km SE of Ancona (100861 inhabitants)
72 Km SE of Fano (60888 inhabitants)
83 Km SE of Pesaro (94582 inhabitants)
85 Km N of Teramo (54892 inhabitants)
96 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
Rev 1000 Md 3.0 1985-04-07
05:30:47
43.42 13.7 7 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 4269
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-07 05:30:47 ± 0.357
Latitude 43.42 ± 0.02
Longitude 13.70 ± 0.04
Depth (km) 7 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 4269

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) 4062.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 205
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) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.0013
Epicentral distance of station farthest from the epicenter (degree) 0.02696
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 4269
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 Takeoff_angle Residual Weight
--.CTI.Z. 1985-04-07T05:31:34.00 10.0 undecidable manual PN 331 0.027 -0.72 0.5
--.AQU.Z. 1985-04-07T05:31:25.00 10.0 undecidable manual SN 191 0.0098 0.8 0.3
--.AS1.Z. 1985-04-07T05:31:17.00 10.0 undecidable manual SG 244 0.0075 0.45 0.6
--.SD1.Z. 1985-04-07T05:31:17.00 10.0 undecidable manual PN 177 0.0154 -0.08 1.3
--.CH1.Z. 1985-04-07T05:31:12.00 10.0 undecidable manual PN 279 0.0115 0.81 0.7
--.ALP.Z. 1985-04-07T05:31:11.80 10.0 undecidable manual SG 188 0.0058 1.46 0.1
--.AQU.Z. 1985-04-07T05:31:09.00 10.0 undecidable manual PN 191 0.0098 0.49 1.3
--.AR1.Z. 1985-04-07T05:31:07.50 10.0 undecidable manual SG 278 0.0049 0.21 0.7
--.PO9.Z. 1985-04-07T05:31:06.50 10.0 undecidable manual PG 213 0.0091 -0.73 1
--.AS1.Z. 1985-04-07T05:31:03.00 10.0 undecidable manual PG 244 0.0075 -1.09 0.5
--.ALP.Z. 1985-04-07T05:31:00.20 10.0 undecidable manual PG 188 0.0058 -0.3 3.2
--.AR1.Z. 1985-04-07T05:30:58.50 10.0 undecidable manual PG 278 0.0049 -0.24 1.7
--.AM1.Z. 1985-04-07T05:30:54.10 10.0 undecidable manual SG 331 0.0013 0.88 0.5
--.AM1.Z. 1985-04-07T05:30:50.80 10.0 undecidable manual PG 331 0.0013 0.18 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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