Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 09-11-1993 and time 19:52:55 (Italy) in region 3 km E Bertinoro (FC)

A magnitude Md 2.5 earthquake occured in region: 3 km E Bertinoro (FC), on

  • 09-11-1993 18:52:55 (UTC)
  • 09-11-1993 19:52:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1630, 12.1750 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Bertinoro FC 4 11059 11059
Forlimpopoli FC 5 13290 24349
Cesena FC 6 96758 121107
Meldola FC 10 9970 131077
Forlì FC 13 117913 248990
Montiano FC 14 1716 250706
Gambettola FC 14 10660 261366
Longiano FC 16 7126 268492
Predappio FC 17 6346 274838
Roncofreddo FC 18 3386 278224
Cervia RA 18 28940 307164
Castrocaro Terme e Terra del Sole FC 18 6426 313590
Gatteo FC 18 9068 322658
Cesenatico FC 18 25796 348454
Savignano sul Rubicone FC 20 17766 366220

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km W of Cesena (96758 inhabitants)
13 Km SE of Forlì (117913 inhabitants)
27 Km SE of Faenza (58541 inhabitants)
28 Km S of Ravenna (159116 inhabitants)
33 Km W of Rimini (147750 inhabitants)
42 Km SE of Imola (69797 inhabitants)
65 Km W of Pesaro (94582 inhabitants)
76 Km E of Bologna (386663 inhabitants)
76 Km W of Fano (60888 inhabitants)
81 Km NE of Arezzo (99543 inhabitants)
86 Km NE of Firenze (382808 inhabitants)
87 Km SE of Ferrara (133155 inhabitants)
91 Km E of Scandicci (50609 inhabitants)
92 Km E of Prato (191150 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
ML-VAX 1.7 		1993-11-09
18:52:55		 44.163 12.175 7 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 199949
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-11-09 18:52:55 ± 0.262
Latitude 44.1630 ± 0.0122
Longitude 12.1750 ± 0.0118
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 199949

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) 1652.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00275
Epicentral distance of station farthest from the epicenter (degree) 0.01724
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 199949
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:07:56

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 199949
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(km) Takeoff_angle Residual Weight
--.ASS.Z. 1993-11-09T18:53:34.63 10.0 undecidable manual SN 162 1.1544 0.4 0.4
--.CTI.Z. 1993-11-09T18:53:28.00 10.0 undecidable manual PN 349 1.9092 -0.38 0.8
--.ARV.Z. 1993-11-09T18:53:25.77 10.0 undecidable manual SG 140 0.8658 0.02 0.7
--.ASS.Z. 1993-11-09T18:53:18.22 10.0 undecidable manual PN 162 1.1544 0.37 1.1
--.MME.Z. 1993-11-09T18:53:17.31 10.0 undecidable manual PG 272 1.0545 0.78 0.3
--.CRE.Z. 1993-11-09T18:53:16.37 10.0 undecidable manual SG 196 0.5661 0.18 0.7
--.ARV.Z. 1993-11-09T18:53:12.58 10.0 undecidable manual PG 140 0.8658 -0.38 1.3
--.PGD.Z. 1993-11-09T18:53:11.71 10.0 undecidable manual SG 228 0.4329 -0.24 0.7
--.SFI.Z. 1993-11-09T18:53:09.63 10.0 undecidable manual SG 222 0.3441 0.46 0.5
--.RSM.Z. 1993-11-09T18:53:07.80 10.0 undecidable manual SG 139 0.3108 -0.48 0.4
--.CRE.Z. 1993-11-09T18:53:07.11 10.0 undecidable manual PG 196 0.5661 -0.33 1.5
--.PGD.Z. 1993-11-09T18:53:04.67 10.0 undecidable manual PG 228 0.4329 -0.32 1.5
--.RSM.Z. 1993-11-09T18:53:03.11 10.0 undecidable manual PG 139 0.3108 0.66 0.6
--.SFI.Z. 1993-11-09T18:53:03.14 10.0 negative manual PG 222 0.3441 -0.24 3.4
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download