Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 22-08-2013 and time 02:31:38 (Italy) in region Costa Romagnola meridionale (Rimini, Forli Cesena)

A magnitude ML 1.9 earthquake occured in region: Costa Romagnola meridionale (Rimini, Forli Cesena), on

  • 22-08-2013 00:31:38 (UTC)
  • 22-08-2013 02:31:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.0800, 12.8690 at 9 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
Gabicce Mare PU 15 5781 5781
Cattolica RN 16 17125 22906
Gradara PU 17 4835 27741
Misano Adriatico RN 18 13014 40755
Pesaro PU 19 94582 135337
Riccione RN 19 34965 170302
San Giovanni in Marignano RN 20 9417 179719

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km N of Pesaro (94582 inhabitants)
24 Km E of Rimini (147750 inhabitants)
29 Km NW of Fano (60888 inhabitants)
50 Km E of Cesena (96758 inhabitants)
65 Km SE of Ravenna (159116 inhabitants)
68 Km E of Forlì (117913 inhabitants)
73 Km NW of Ancona (100861 inhabitants)
82 Km E of Faenza (58541 inhabitants)
97 Km E of Imola (69797 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 1.9 2013-08-22
00:31:38		 44.0797 12.8692 9 2015-02-12
09:07:26		 Bollettino Sismico Italiano INGV 8388471
Reviewed
Rev100 		ML 2.0 2013-08-22
00:31:38		 44.0797 12.828 10 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 4315311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-08-22 00:31:38 ± 0.31
Latitude 44.0797 ± 0.0144
Longitude 12.8692 ± 0.0138
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 8388471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1590
Semi-minor axis of confidence ellipse (meter) 1064
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 357
Circular confidence region, given by single value of horizontal uncertainty (meter) 1590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 249
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.14029
Epicentral distance of station farthest from the epicenter (degree) 1.25815
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 8388471
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:09:38

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 4315311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-08-22 00:36:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2013-08-22T00:32:05.00 0.3 undecidable manual S 167 85.248 50 0.71 57
IV.ATVO.HHZ. 2013-08-22T00:32:04.80 0.6 undecidable manual S 206 85.7475 50 0.38 42
IV.ATPI.EHZ. 2013-08-22T00:32:03.10 0.3 undecidable manual S 208 79.1652 50 0.45 63
IV.NRCA.HHE. 2013-08-22T00:32:02.02 0.6 undecidable manual P 172 139.6602 50 0.18 39
IV.PCRO.HNE. 2013-08-22T00:32:01.80 0.3 undecidable manual S 134 74.5698 50 0.38 65
IV.GUMA.HHN. 2013-08-22T00:31:59.18 0.1 undecidable manual P 161 118.8921 50 0.54 76
IV.FRON.EHZ. 2013-08-22T00:31:58.50 0.3 undecidable manual S 190 63.3921 50 0.06 71
IV.FDMO.HHZ. 2013-08-22T00:31:58.10 0.6 undecidable manual P 171 116.994 50 -0.26 41
IV.PIEI.HHZ. 2013-08-22T00:31:58.90 0.3 undecidable manual S 204 65.9895 50 -0.24 68
IV.NARO.HHZ. 2013-08-22T00:31:56.60 0.1 undecidable manual S 204 56.8986 50 -0.11 95
IV.SENI.EHZ. 2013-08-22T00:31:55.00 0.3 undecidable manual S 145 50.7159 50 -0.06 72
IV.COR1.EHZ. 2013-08-22T00:31:55.70 0.3 undecidable manual S 168 50.8158 50 0.63 63
IV.PE3.EHZ. 2013-08-22T00:31:55.60 0.3 undecidable manual S 215 51.9036 50 0.21 70
IV.EL6.EHZ. 2013-08-22T00:31:53.49 0.3 undecidable manual P 167 85.248 50 0.02 68
IV.ATVO.HHZ. 2013-08-22T00:31:53.54 0.3 undecidable manual P 206 85.7475 50 -0.01 68
IV.ATPI.EHZ. 2013-08-22T00:31:52.64 0.3 undecidable manual P 208 79.1652 50 0.12 68
IV.FSSB.HHE. 2013-08-22T00:31:52.50 0.3 undecidable manual S 190 43.5231 50 -0.63 63
IV.PCRO.HNE. 2013-08-22T00:31:52.29 0.3 undecidable manual P 134 74.5698 50 0.48 63
IV.PARC.HHZ. 2013-08-22T00:31:51.37 0.3 undecidable manual P 227 69.4749 50 0.34 66
IV.PIEI.HHZ. 2013-08-22T00:31:50.02 0.1 undecidable manual P 204 65.9895 50 -0.48 86
IV.SSFR.HHZ. 2013-08-22T00:31:50.79 0.3 undecidable manual P 186 71.6727 50 -0.58 61
IV.FRON.EHZ. 2013-08-22T00:31:49.48 0.1 undecidable manual P 190 63.3921 50 -0.61 82
IV.CPGN.EHE. 2013-08-22T00:31:49.84 0.6 undecidable manual P 235 53.6019 50 1.25 31
IV.ARVD.HHZ. 2013-08-22T00:31:49.41 0.1 undecidable manual P 175 64.7907 50 -0.9 73
IV.SENI.EHZ. 2013-08-22T00:31:48.21 0.1 undecidable manual P 145 50.7159 50 0.07 96
IV.NARO.HHZ. 2013-08-22T00:31:48.66 0.3 undecidable manual P 204 56.8986 50 -0.43 66
IV.PE3.EHZ. 2013-08-22T00:31:48.54 0.1 undecidable manual P 215 51.9036 50 0.21 93
IV.COR1.EHZ. 2013-08-22T00:31:47.85 0.3 undecidable manual P 168 50.8158 50 -0.3 69
IV.MPAG.EHE. 2013-08-22T00:31:47.40 0.1 undecidable manual P 190 50.7159 50 -0.74 80
IV.RSM2.HHE. 2013-08-22T00:31:47.18 0.3 undecidable manual P 245 37.3293 50 1.11 52
IV.FSSB.HHE. 2013-08-22T00:31:46.41 0.1 undecidable manual P 190 43.5231 50 -0.62 85
IV.PESA.HHE. 2013-08-22T00:31:45.20 0.3 undecidable manual S 189 15.5733 121 0.21 75
IV.PESA.HHE. 2013-08-22T00:31:42.52 0.1 undecidable manual P 189 15.5733 121 0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHE. ML:1.7 0.00010125000000000001 0.28 AML other m 2013-08-22T00:31:59.79
IV.ARVD.HHN. ML:1.7 0.00008675 0.92 AML other m 2013-08-22T00:32:00.04
IV.ATPI.EHE. ML:1.8 0.00008412 0.34 AML other m 2013-08-22T00:32:08.31
IV.ATPI.EHN. ML:1.7 0.0000727 0.32 AML other m 2013-08-22T00:32:12.67
IV.ATTE.HHE. ML:1.8 0.00005615 1.2 AML other m 2013-08-22T00:32:18.17
IV.ATTE.HHN. ML:1.8 0.0000558 1.16 AML other m 2013-08-22T00:32:18.56
IV.ATVO.HHE. ML:1.8 0.00008690000000000001 0.46 AML other m 2013-08-22T00:32:06.69
IV.ATVO.HHN. ML:2.1 0.00016199999999999998 0.36 AML other m 2013-08-22T00:32:06.83
IV.FDMO.HHE. ML:1.8 0.000047550000000000004 0.24 AML other m 2013-08-22T00:32:16.99
IV.FDMO.HHN. ML:1.7 0.000037699999999999995 1.44 AML other m 2013-08-22T00:32:17.36
IV.FRON.EHN. ML:2.3 0.00035499999999999996 0.26 AML other m 2013-08-22T00:31:59.72
IV.FRON.EHE. ML:1.8 0.00011899999999999999 1.24 AML other m 2013-08-22T00:32:00.33
IV.NARO.HHN. ML:1.9 0.0001835 0.24 AML other m 2013-08-22T00:31:58.24
IV.NARO.HHE. ML:1.8 0.000141 0.62 AML other m 2013-08-22T00:31:58.57
IV.PARC.HHN. ML:1.8 0.0001205 0.38 AML other m 2013-08-22T00:32:02.46
IV.PARC.HHE. ML:1.6 0.00006375 0.46 AML other m 2013-08-22T00:32:03.37
IV.PE3.EHN. ML:2.2 0.00038 0.4 AML other m 2013-08-22T00:31:58.36
IV.PE3.EHE. ML:2.2 0.000372 0.42 AML other m 2013-08-22T00:31:58.39
IV.PIEI.HHN. ML:1.9 0.000135 0.56 AML other m 2013-08-22T00:32:00.49
IV.PIEI.HHE. ML:2.1 0.00022449999999999998 0.26 AML other m 2013-08-22T00:32:00.72
IV.SSFR.HHN. ML:2.4 0.00035749999999999996 0.26 AML other m 2013-08-22T00:32:02.95
IV.SSFR.HHE. ML:2.3 0.0003 0.2 AML other m 2013-08-22T00:32:02.10
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