Earthquake with magnitude of Md 2.5 on date 30-03-1985 and time 03:36:44 (UTC) in region 2 km W San Giovanni in Marignano (RN)

A magnitude Md 2.5 earthquake occured in region: 2 km W San Giovanni in Marignano (RN), on

  • 30-03-1985 03:36:44 (UTC)
  • 30-03-1985 04:36:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.94, 12.69 at 23 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
San Giovanni in Marignano RN 2 9417 9417
Misano Adriatico RN 4 13014 22431
Morciano di Romagna RN 5 7045 29476
Cattolica RN 5 17125 46601
San Clemente RN 5 5577 52178
Gabicce Mare PU 6 5781 57959
Gradara PU 7 4835 62794
Tavullia PU 7 8003 70797
Riccione RN 7 34965 105762
Saludecio RN 8 3120 108882
Coriano RN 8 10502 119384
Montefiore Conca RN 8 2269 121653
Montegridolfo RN 9 1012 122665
Mondaino RN 9 1394 124059
Gemmano RN 10 1158 125217
Montescudo - Monte Colombo RN 12 6779 131996
Montelabbate PU 13 6938 138934
Tavoleto PU 13 867 139801
Montecalvo in Foglia PU 15 2718 142519
Vallefoglia PU 15 15018 157537
Sassofeltrio PU 16 1388 158925
Monteciccardo PU 16 1690 160615
Auditore PU 16 1566 162181
Rimini RN 17 147750 309931
Mercatino Conca PU 18 1086 311017
Pesaro PU 18 94582 405599
Petriano PU 18 2829 408428
Monte Grimano Terme PU 19 1136 409564

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SE of Rimini (147750 inhabitants)
18 Km W of Pesaro (94582 inhabitants)
28 Km W of Fano (60888 inhabitants)
42 Km SE of Cesena (96758 inhabitants)
61 Km SE of Forlì (117913 inhabitants)
66 Km SE of Ravenna (159116 inhabitants)
75 Km SE of Faenza (58541 inhabitants)
75 Km W of Ancona (100861 inhabitants)
84 Km NE of Arezzo (99543 inhabitants)
91 Km SE of Imola (69797 inhabitants)
96 Km N of Perugia (166134 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 2.5 1985-03-30
03:36:44
43.94 12.69 23 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 3779
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-03-30 03:36:44 ± 0.742
Latitude 43.94 ± 0.04
Longitude 12.69 ± 0.03
Depth (km) 23 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 3779

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) 5364.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 277
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00421
Epicentral distance of station farthest from the epicenter (degree) 0.01392
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 3779
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AS1.Z. 1985-03-30T03:37:13.50 10.0 undecidable manual SN 182 0.0079 -0.11 0.7
--.MNS.Z. 1985-03-30T03:37:10.00 10.0 undecidable manual PN 180 0.0139 -0.71 0.7
--.PO9.Z. 1985-03-30T03:37:09.50 10.0 undecidable manual PN 172 0.0124 1.23 0.2
--.CH1.Z. 1985-03-30T03:37:07.50 10.0 undecidable manual SG 240 0.0056 0.41 0.6
--.AR1.Z. 1985-03-30T03:37:02.50 10.0 undecidable manual SG 157 0.0042 -0.07 0.7
--.AS1.Z. 1985-03-30T03:37:01.00 10.0 undecidable manual PN 182 0.0079 -0.42 1.4
--.CH1.Z. 1985-03-30T03:36:57.50 10.0 undecidable manual PG 240 0.0056 -0.16 1.8
--.AR1.Z. 1985-03-30T03:36:55.00 10.0 undecidable manual PG 157 0.0042 -0.05 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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