Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 05-04-2013 and time 22:22:34 (Italy) in region Costa Romagnola meridionale (Rimini, Forli Cesena)

A magnitude ML 1.6 earthquake occured in region: Costa Romagnola meridionale (Rimini, Forli Cesena), on

  • 05-04-2013 20:22:34 (UTC)
  • 05-04-2013 22:22:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1090, 12.7240 at 18 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
Riccione RN 13 34965 34965
Rimini RN 14 147750 182715
Misano Adriatico RN 15 13014 195729
Gabicce Mare PU 16 5781 201510
Cattolica RN 16 17125 218635
Coriano RN 19 10502 229137
San Giovanni in Marignano RN 19 9417 238554
Gradara PU 19 4835 243389

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km E of Rimini (147750 inhabitants)
27 Km NW of Pesaro (94582 inhabitants)
38 Km NW of Fano (60888 inhabitants)
39 Km E of Cesena (96758 inhabitants)
54 Km SE of Ravenna (159116 inhabitants)
56 Km E of Forlì (117913 inhabitants)
70 Km E of Faenza (58541 inhabitants)
84 Km NW of Ancona (100861 inhabitants)
85 Km E of Imola (69797 inhabitants)
98 Km NE of Arezzo (99543 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 		ML 1.6 2013-04-05
20:22:34		 44.109 12.7242 18 2015-01-20
11:24:30		 Bollettino Sismico Italiano INGV 4647611
Reviewed
Rev100 		ML 1.4 2013-04-05
20:22:34		 44.0353 12.5843 2 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 3156801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-04-05 20:22:34 ± 0.46
Latitude 44.1090 ± 0.0189
Longitude 12.7242 ± 0.0301
Depth (km) 18 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 4647611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2461
Semi-minor axis of confidence ellipse (meter) 1175
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 242
Circular confidence region, given by single value of horizontal uncertainty (meter) 2460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 304
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) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.18706
Epicentral distance of station farthest from the epicenter (degree) 0.69158
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 3
Type of magnitude ML
Reference to an origin 4647611
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:25:24

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 3
Type of magnitude ML
Reference to an origin 3156801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-04-05 20:28:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BADI.EHE. 2013-04-05T20:22:57.97 0.6 undecidable manual S 210 76.7676 96 0.69 42
IV.FRON.EHE. 2013-04-05T20:22:54.16 0.6 undecidable manual S 180 65.5899 97 -0.15 47
IV.PIEI.HHZ. 2013-04-05T20:22:53.55 0.6 undecidable manual S 193 65.3901 97 -0.71 39
IV.NARO.HHZ. 2013-04-05T20:22:51.24 0.1 undecidable manual S 192 56.3991 98 -0.65 83
IV.MPAG.EHE. 2013-04-05T20:22:50.63 0.6 undecidable manual S 177 53.3022 99 -0.43 46
IV.FSSB.HHZ. 2013-04-05T20:22:49.15 0.1 undecidable manual S 175 46.3203 101 -0.08 100
IV.BADI.EHE. 2013-04-05T20:22:47.88 0.1 undecidable manual P 210 76.7676 96 0.34 91
IV.PIEI.HHZ. 2013-04-05T20:22:46.12 0.1 undecidable manual P 193 65.3901 97 0.32 93
IV.FRON.EHE. 2013-04-05T20:22:45.60 0.1 undecidable manual P 180 65.5899 97 -0.23 93
IV.NARO.HHZ. 2013-04-05T20:22:43.89 0.1 undecidable manual P 192 56.3991 98 -0.54 87
IV.MPAG.EHE. 2013-04-05T20:22:43.55 0.1 undecidable manual P 177 53.3022 99 -0.41 92
IV.FSSB.HHZ. 2013-04-05T20:22:42.45 0.1 undecidable manual P 175 46.3203 101 -0.44 93
IV.PESA.HHZ. 2013-04-05T20:22:42.64 0.3 undecidable manual S 154 20.7681 120 -0.13 76
IV.PESA.HHZ. 2013-04-05T20:22:39.24 0.1 undecidable manual P 154 20.7681 120 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FSSB.HHN. ML:1.7 0.000129 1.12 AML other m 2013-04-05T20:22:51.51
IV.FSSB.HHE. ML:1.6 0.0000998 1.4 AML other m 2013-04-05T20:22:51.72
IV.NARO.HHN. ML:1.5 0.00007384999999999999 0.62 AML other m 2013-04-05T20:22:51.31
IV.NARO.HHE. ML:1.4 0.000054800000000000004 0.06 AML other m 2013-04-05T20:22:51.57
IV.PIEI.HHN. ML:1.6 0.00006615 1.56 AML other m 2013-04-05T20:22:55.47
IV.PIEI.HHE. ML:1.5 0.00006025 1.2 AML other m 2013-04-05T20:22:56.09
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