Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 09-11-1993 and time 17:55:34 (Italy) in region 4 km S Bertinoro (FC)

A magnitude Md 2.5 earthquake occured in region: 4 km S Bertinoro (FC), on

  • 09-11-1993 16:55:34 (UTC)
  • 09-11-1993 17:55:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1180, 12.1420 at 5 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
Meldola FC 7 9970 21029
Forlimpopoli FC 8 13290 34319
Cesena FC 8 96758 131077
Predappio FC 13 6346 137423
Montiano FC 14 1716 139139
Forlì FC 14 117913 257052
Longiano FC 16 7126 264178
Gambettola FC 16 10660 274838
Roncofreddo FC 16 3386 278224
Castrocaro Terme e Terra del Sole FC 17 6426 284650
Sogliano al Rubicone FC 18 3195 287845
Mercato Saraceno FC 18 6886 294731
Borghi FC 20 2843 297574
Gatteo FC 20 9068 306642

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km W of Cesena (96758 inhabitants)
14 Km SE of Forlì (117913 inhabitants)
28 Km SE of Faenza (58541 inhabitants)
34 Km S of Ravenna (159116 inhabitants)
35 Km W of Rimini (147750 inhabitants)
43 Km SE of Imola (69797 inhabitants)
66 Km W of Pesaro (94582 inhabitants)
75 Km N of Arezzo (99543 inhabitants)
76 Km SE of Bologna (386663 inhabitants)
77 Km W of Fano (60888 inhabitants)
81 Km E of Firenze (382808 inhabitants)
87 Km E of Scandicci (50609 inhabitants)
88 Km E of Prato (191150 inhabitants)
90 Km SE of Ferrara (133155 inhabitants)
100 Km E of Pistoia (90315 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 1.8 		1993-11-09
16:55:34		 44.118 12.142 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 199939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-11-09 16:55:34 ± 0.565
Latitude 44.1180 ± 0.0328
Longitude 12.1420 ± 0.0201
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 199939

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) 3984.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 222
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.01004
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 5
Type of magnitude Md
Reference to an origin 199939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:07:56

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 199939
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. 1993-11-09T16:56:14.10 10.0 undecidable manual SN 160 1.11 1.6 0
--.BDI.Z. 1993-11-09T16:56:13.51 10.0 undecidable manual SN 267 1.11 1.17 0.1
--.ARV.Z. 1993-11-09T16:56:05.22 10.0 undecidable manual SG 136 0.8436 1.09 0.1
--.BDI.Z. 1993-11-09T16:55:56.94 10.0 undecidable manual PN 267 1.11 0.77 0.5
--.ASS.Z. 1993-11-09T16:55:55.68 10.0 undecidable manual PN 160 1.11 -0.59 0.7
--.CRE.Z. 1993-11-09T16:55:53.91 10.0 undecidable manual SG 195 0.5106 0.37 0.5
--.ARV.Z. 1993-11-09T16:55:50.54 10.0 negative manual PG 136 0.8436 -0.89 0.9
--.PGD.Z. 1993-11-09T16:55:49.40 10.0 undecidable manual SG 231 0.3885 -0.08 0.6
--.SR3.Z. 1993-11-09T16:55:47.00 10.0 undecidable manual SG 222 0.3219 0.32 0.8
--.RSM.Z. 1993-11-09T16:55:46.40 10.0 undecidable manual SG 130 0.2886 0.95 0.2
--.SFI.Z. 1993-11-09T16:55:45.83 10.0 undecidable manual SG 224 0.2997 0.04 0.6
--.CRE.Z. 1993-11-09T16:55:44.86 10.0 undecidable manual PG 195 0.5106 -0.46 1.2
--.PGD.Z. 1993-11-09T16:55:42.51 10.0 negative manual PG 231 0.3885 -0.26 2.9
--.SR3.Z. 1993-11-09T16:55:41.00 10.0 negative manual PG 222 0.3219 -0.36 2.7
--.RSM.Z. 1993-11-09T16:55:41.22 10.0 undecidable manual PG 130 0.2886 0.57 1
--.SFI.Z. 1993-11-09T16:55:40.99 10.0 negative manual PG 224 0.2997 0.14 3.1
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