Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 08-06-2012 and time 22:30:04 (Italy) in region Costa Ravennate (Ravenna)

A magnitude ML 2.1 earthquake occured in region: Costa Ravennate (Ravenna), on

  • 08-06-2012 20:30:04 (UTC)
  • 08-06-2012 22:30:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.4280, 12.3370 at 30 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
Ravenna RA 11 159116 159116
Cervia RA 19 28940 188056

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km E of Ravenna (159116 inhabitants)
33 Km NE of Forlì (117913 inhabitants)
33 Km N of Cesena (96758 inhabitants)
39 Km E of Faenza (58541 inhabitants)
45 Km NW of Rimini (147750 inhabitants)
50 Km E of Imola (69797 inhabitants)
73 Km SE of Ferrara (133155 inhabitants)
74 Km NW of Pesaro (94582 inhabitants)
79 Km E of Bologna (386663 inhabitants)
84 Km SE of Rovigo (51867 inhabitants)
85 Km NW of Fano (60888 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
Reviewed
Rev100 		ML 2.2 2012-06-08
20:30:02		 44.5015 12.506 78 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 1601591
Bulletin
Rev1000 		ML 2.1 2012-06-08
20:30:04		 44.4282 12.3367 30 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV 2753231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-06-08 20:30:04 ± 0.29
Latitude 44.4282 ± 0.0234
Longitude 12.3367 ± 0.0340
Depth (km) 30 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 2753231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2870
Semi-minor axis of confidence ellipse (meter) 1989
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 226
Circular confidence region, given by single value of horizontal uncertainty (meter) 2870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.58
Epicentral distance of station closest to the epicenter (degree) 0.40829
Epicentral distance of station farthest from the epicenter (degree) 1.93984
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 2753231
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:42:28

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 0
Type of magnitude ML
Reference to an origin 1601591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-06-08 20:43:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
NI.VINO.HHZ. 2012-06-08T20:30:35.96 0.3 undecidable manual P 20 215.3178 54 -0.37 45
IV.PIEI.HHZ. 2012-06-08T20:30:34.47 0.6 undecidable manual S 171 100.2219 102 0.07 51
IV.MPAG.EHZ. 2012-06-08T20:30:33.96 0.6 undecidable manual S 159 94.8384 103 0.98 38
IV.T0822.EHZ. 2012-06-08T20:30:32.85 0.6 undecidable manual S 300 90.243 104 1.08 38
IV.NARO.HHZ. 2012-06-08T20:30:32.91 0.6 undecidable manual S 168 92.7405 103 0.47 48
MN.TRI.BHZ. 2012-06-08T20:30:32.61 0.6 undecidable manual P 38 180.7857 54 0.58 37
IV.FSSB.HHZ. 2012-06-08T20:30:31.39 0.6 undecidable manual S 157 88.7445 104 -0.02 53
IV.SFI.EHZ. 2012-06-08T20:30:26.01 0.6 undecidable manual S 214 69.8745 108 -0.56 48
IV.PESA.HHZ. 2012-06-08T20:30:26.95 0.6 undecidable manual S 143 67.2771 109 1.05 37
IV.ATVO.HHZ. 2012-06-08T20:30:24.26 0.1 undecidable manual P 177 116.1948 54 0.27 100
IV.PTF.SHZ. 2012-06-08T20:30:24.82 0.3 undecidable manual P 243 113.3976 54 1.18 57
IV.CMPO.HHZ. 2012-06-08T20:30:21.22 0.6 undecidable manual S 292 45.3213 118 0.71 46
IV.PIEI.HHZ. 2012-06-08T20:30:20.41 0.3 undecidable manual P 171 100.2219 102 -1.41 46
IV.T0822.EHZ. 2012-06-08T20:30:20.59 0.3 undecidable manual P 300 90.243 104 0.29 75
IV.MPAG.EHZ. 2012-06-08T20:30:20.98 0.3 undecidable manual P 159 94.8384 103 -0.03 79
IV.FSSB.HHZ. 2012-06-08T20:30:19.66 0.3 undecidable manual P 157 88.7445 104 -0.44 73
IV.NARO.HHZ. 2012-06-08T20:30:19.71 0.3 undecidable manual P 168 92.7405 103 -0.98 59
IV.PESA.HHZ. 2012-06-08T20:30:17.50 0.3 undecidable manual P 143 67.2771 109 0.59 71
IV.SFI.EHZ. 2012-06-08T20:30:15.73 0.3 undecidable manual P 214 69.8745 108 -1.57 44
IV.CMPO.HHZ. 2012-06-08T20:30:12.53 0.3 undecidable manual P 292 45.3213 118 -1.26 56
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FSSB.HHE. ML:2.4 0.000277 0.3 AML other m 2012-06-08T20:30:34.59
IV.FSSB.HHN. ML:2.4 0.0002505 0.28 AML other m 2012-06-08T20:30:35.04
IV.NARO.HHE. ML:1.6 0.000046299999999999994 1.3 AML other m 2012-06-08T20:30:35.46
IV.NARO.HHN. ML:1.6 0.00004025 0.48 AML other m 2012-06-08T20:30:35.62
IV.PESA.HHN. ML:2.2 0.000247 1.34 AML other m 2012-06-08T20:30:28.43
IV.PESA.HHE. ML:2.4 0.00042400000000000006 0.6 AML other m 2012-06-08T20:30:29.52
NI.VINO.HHE. ML:2.0 0.000022599999999999997 1.06 AML other m 2012-06-08T20:31:12.56
NI.VINO.HHN. ML:2.0 0.0000235 0.36 AML other m 2012-06-08T20:31:14.07
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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