Earthquake with magnitude of Md 2.9 on date 07-04-1985 and time 02:46:04 (UTC) in region Costa Marchigiana Maceratese (Macerata)

A magnitude Md 2.9 earthquake occured in region: Costa Marchigiana Maceratese (Macerata), on

  • 07-04-1985 02:46:04 (UTC)
  • 07-04-1985 04:46:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.49, 13.8 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 13 12531 12531
Numana AN 15 3775 16306
Sirolo AN 15 4051 20357
Loreto AN 17 12814 33171

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SE of Ancona (100861 inhabitants)
74 Km SE of Fano (60888 inhabitants)
85 Km SE of Pesaro (94582 inhabitants)
93 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
Rev 1000 Md 2.9 1985-04-07
02:46:04
43.49 13.8 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 4219
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-07 02:46:04 ± 0.639
Latitude 43.49 ± 0.03
Longitude 13.80 ± 0.05
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 4219

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) 5210.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 209
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00138
Epicentral distance of station farthest from the epicenter (degree) 0.02671
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

Md:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 4219
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1985-04-07T02:47:26.00 10.0 undecidable manual SN 329 0.0267 0.54 0.4
--.CTI.Z. 1985-04-07T02:46:52.00 10.0 undecidable manual PN 329 0.0267 0.86 0.9
--.MNS.Z. 1985-04-07T02:46:49.00 10.0 undecidable manual SN 216 0.0124 1.48 0.3
--.CH1.Z. 1985-04-07T02:46:48.00 10.0 undecidable manual SN 276 0.0121 1.17 0.4
--.AQU.Z. 1985-04-07T02:46:43.00 10.0 undecidable manual SN 194 0.0105 0.29 0.8
--.AS1.Z. 1985-04-07T02:46:37.50 10.0 undecidable manual SG 242 0.0084 1.13 0.5
--.SD1.Z. 1985-04-07T02:46:35.50 10.0 undecidable manual PN 179 0.016 0.7 1.3
--.CH1.Z. 1985-04-07T02:46:31.00 10.0 undecidable manual PN? 276 0.0121 2.16 0.1
--.MNS.Z. 1985-04-07T02:46:29.50 10.0 undecidable manual PN 216 0.0124 0.26 1.8
--.PRG.Z. 1985-04-07T02:46:28.00 10.0 undecidable manual PN? 249 0.0098 2.66 0
--.ALP.Z. 1985-04-07T02:46:28.60 10.0 undecidable manual SG 193 0.0066 -1.11 0.7
--.AR1.Z. 1985-04-07T02:46:27.00 10.0 undecidable manual SG 270 0.0056 0.82 0.9
--.AQU.Z. 1985-04-07T02:46:26.50 10.0 undecidable manual PN 194 0.0105 0.04 2
--.PO9.Z. 1985-04-07T02:46:26.00 10.0 undecidable manual PN 214 0.01 0.41 1.9
--.AS1.Z. 1985-04-07T02:46:22.00 10.0 undecidable manual PG 242 0.0084 -0.8 1.5
--.ALP.Z. 1985-04-07T02:46:17.20 10.0 undecidable manual PG 193 0.0066 -1.75 0.5
--.AR1.Z. 1985-04-07T02:46:16.50 10.0 undecidable manual PG 270 0.0056 -0.42 1.9
--.AM1.Z. 1985-04-07T02:46:09.80 10.0 undecidable manual SG 291 0.0014 -1.36 0.6
--.AM1.Z. 1985-04-07T02:46:07.10 10.0 undecidable manual PG 291 0.0014 -1.15 2.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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