Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 21-04-2013 and time 23:55:29 (UTC) in region Costa Marchigiana Anconetana (Ancona)

A magnitude ML 1.9 earthquake occured in region: Costa Marchigiana Anconetana (Ancona), on

  • 21-04-2013 23:55:29 (UTC)
  • 22-04-2013 01:55:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.7820, 13.2570 at 10 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
Senigallia AN 8 45027 45027
Mondolfo PU 13 14277 59304
San Costanzo PU 15 4786 64090
Montemarciano AN 16 9992 74082
Trecastelli AN 17 7625 81707
Monte Porzio PU 20 2836 84543
Monte San Vito AN 20 6848 91391

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Fano (60888 inhabitants)
28 Km NW of Ancona (100861 inhabitants)
31 Km E of Pesaro (94582 inhabitants)
63 Km E of Rimini (147750 inhabitants)
90 Km E of Cesena (96758 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 2013-04-21
23:55:29		 43.7818 13.2568 11 2015-01-20
11:25:06		 Bollettino Sismico Italiano INGV 3623171
Reviewed
Rev100 		ML 1.9 2013-04-21
23:55:29		 43.7847 13.2583 10 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 3276191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-04-21 23:55:29 ± 0.2
Latitude 43.7818 ± 0.0099
Longitude 13.2568 ± 0.0112
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 3623171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1218
Semi-minor axis of confidence ellipse (meter) 737
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 34
Circular confidence region, given by single value of horizontal uncertainty (meter) 1220.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 193
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.07824
Epicentral distance of station farthest from the epicenter (degree) 1.18531
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 23
Type of magnitude ML
Reference to an origin 3623171
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 12:56:46

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 21
Type of magnitude ML
Reference to an origin 3276191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-04-22 00:01:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2013-04-21T23:55:55.00 0.6 undecidable manual S 189 83.8494 50 0.74 37
IV.ATCC.EHZ. 2013-04-21T23:55:55.00 0.3 undecidable manual S 217 82.7505 50 1.02 49
IV.TERO.HHZ. 2013-04-21T23:55:51.87 0.6 undecidable manual P 168 131.5683 50 0.79 33
IV.PIEI.HHZ. 2013-04-21T23:55:49.81 0.3 undecidable manual S 245 64.0914 50 0.83 55
IV.SNTG.HHZ. 2013-04-21T23:55:49.10 0.3 undecidable manual S 204 63.7917 50 0.2 68
IV.ASSB.HHZ. 2013-04-21T23:55:45.17 0.6 undecidable manual P 211 95.1381 50 -0.29 42
IV.CESI.HHZ. 2013-04-21T23:55:44.58 0.6 undecidable manual P 198 90.7425 50 -0.2 43
IV.MPAG.EHZ. 2013-04-21T23:55:43.30 0.6 undecidable manual S 247 43.3233 50 -0.16 47
IV.ATVO.HHZ. 2013-04-21T23:55:43.51 0.6 undecidable manual P 237 81.4518 50 0.16 44
IV.FDMO.HHZ. 2013-04-21T23:55:43.43 0.3 undecidable manual P 189 83.8494 50 -0.28 64
IV.CING.HHZ. 2013-04-21T23:55:43.90 0.1 undecidable manual S 186 45.3213 50 -0.1 95
IV.ATCC.EHZ. 2013-04-21T23:55:43.49 0.6 undecidable manual P 217 82.7505 50 -0.06 45
IV.PARC.HHZ. 2013-04-21T23:55:43.85 0.6 undecidable manual P 260 82.9503 50 0.27 43
IV.CSP1.EHZ. 2013-04-21T23:55:42.29 0.6 undecidable manual P 183 76.6677 50 -0.32 43
IV.ATPI.EHZ. 2013-04-21T23:55:42.77 0.6 undecidable manual P 242 77.8665 50 -0.02 45
IV.FSSB.HHZ. 2013-04-21T23:55:42.50 0.1 undecidable manual S 256 39.7269 50 0.01 98
IV.ATFO.HHZ. 2013-04-21T23:55:41.85 0.3 undecidable manual P 230 71.7726 50 -0.01 69
IV.ARVD.HHZ. 2013-04-21T23:55:41.90 0.3 undecidable manual S 219 40.4262 50 -0.77 59
IV.PE3.EHZ. 2013-04-21T23:55:40.74 0.3 undecidable manual P 261 61.6938 50 0.44 64
IV.PCRO.HNZ. 2013-04-21T23:55:40.30 0.6 undecidable manual S 131 29.3484 50 0.57 44
IV.PIEI.HHZ. 2013-04-21T23:55:40.31 0.6 undecidable manual P 245 64.0914 50 -0.35 43
IV.SNTG.HHZ. 2013-04-21T23:55:40.29 0.3 undecidable manual P 204 63.7917 50 -0.33 66
IV.NARO.HHZ. 2013-04-21T23:55:39.40 0.3 undecidable manual P 251 57.498 50 -0.25 67
IV.COR1.EHZ. 2013-04-21T23:55:39.80 0.6 undecidable manual S 231 26.4513 50 0.84 39
IV.FRON.EHZ. 2013-04-21T23:55:38.47 0.1 undecidable manual P 236 51.7038 50 -0.3 90
IV.EL6.EHZ. 2013-04-21T23:55:38.42 0.1 undecidable manual P 194 51.7038 50 -0.35 89
IV.SSFR.HHZ. 2013-04-21T23:55:38.69 0.1 undecidable manual P 225 54.1014 50 -0.44 87
IV.CING.HHZ. 2013-04-21T23:55:37.41 0.1 undecidable manual P 186 45.3213 50 -0.38 90
IV.PESA.HHZ. 2013-04-21T23:55:37.20 0.3 undecidable manual P 298 37.7289 50 0.6 64
IV.MPAG.EHZ. 2013-04-21T23:55:37.13 0.1 undecidable manual P 247 43.3233 50 -0.34 91
IV.FSSB.HHZ. 2013-04-21T23:55:36.77 0.1 undecidable manual P 256 39.7269 50 -0.14 95
IV.ARVD.HHZ. 2013-04-21T23:55:36.49 0.1 undecidable manual P 219 40.4262 50 -0.53 87
IV.PCRO.HNZ. 2013-04-21T23:55:35.58 0.3 undecidable manual P 131 29.3484 50 0.26 71
IV.COR1.EHZ. 2013-04-21T23:55:35.21 0.1 undecidable manual P 231 26.4513 50 0.34 93
IV.SENI.HNZ. 2013-04-21T23:55:34.20 0.1 undecidable manual S 193 8.6802 140 0.16 100
IV.SENI.HNZ. 2013-04-21T23:55:32.26 0.1 undecidable manual P 193 8.6802 140 0.22 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHE. ML:1.6 0.0001265 0.7 AML other m 2013-04-21T23:55:42.83
IV.ARVD.HHN. ML:1.5 0.00010885 0.36 AML other m 2013-04-21T23:55:43.35
IV.ASSB.HHN. ML:2.0 0.0000975 0.32 AML other m 2013-04-21T23:55:59.77
IV.ASSB.HHE. ML:2.0 0.0000955 0.38 AML other m 2013-04-21T23:56:01.68
IV.ATCC.EHN. ML:1.9 0.00009685 0.58 AML other m 2013-04-21T23:55:59.94
IV.ATCC.EHE. ML:1.9 0.0001013 0.52 AML other m 2013-04-21T23:55:58.41
IV.ATFO.HHE. ML:1.9 0.0001295 0.6 AML other m 2013-04-21T23:55:53.03
IV.ATFO.HHN. ML:1.8 0.00010899999999999999 0.48 AML other m 2013-04-21T23:55:55.99
IV.ATVO.HHE. ML:1.7 0.00007445000000000001 0.82 AML other m 2013-04-21T23:55:56.20
IV.ATVO.HHN. ML:1.6 0.0000526 1.04 AML other m 2013-04-21T23:55:57.01
IV.CESI.HHE. ML:1.3 0.0000233 0.24 AML other m 2013-04-21T23:56:00.45
IV.CESI.HHN. ML:1.5 0.00003545 1.24 AML other m 2013-04-21T23:55:59.71
IV.CING.HHE. ML:2.0 0.000297 0.2 AML other m 2013-04-21T23:55:44.23
IV.CING.HHN. ML:2.0 0.000314 0.28 AML other m 2013-04-21T23:55:44.31
IV.FDMO.HHE. ML:2.0 0.0001255 0.3 AML other m 2013-04-21T23:55:56.68
IV.FDMO.HHN. ML:1.9 0.00011265 0.28 AML other m 2013-04-21T23:55:56.68
IV.FRON.EHE. ML:1.7 0.00011295 0.7 AML other m 2013-04-21T23:55:47.82
IV.FRON.EHN. ML:1.8 0.00014150000000000002 0.34 AML other m 2013-04-21T23:55:47.87
IV.FSSB.HHE. ML:2.2 0.0005394999999999999 0.26 AML other m 2013-04-21T23:55:42.69
IV.FSSB.HHN. ML:2.1 0.00046300000000000003 0.98 AML other m 2013-04-21T23:55:44.12
IV.MPAG.EHE. ML:1.8 0.000211 0.3 AML other m 2013-04-21T23:55:44.74
IV.MPAG.EHN. ML:1.8 0.0001795 0.36 AML other m 2013-04-21T23:55:45.73
IV.NARO.HHE. ML:1.9 0.0001795 1.02 AML other m 2013-04-21T23:55:49.75
IV.NARO.HHN. ML:1.7 0.00011549999999999999 0.36 AML other m 2013-04-21T23:55:49.36
IV.NRCA.HHE. ML:2.0 0.00008345 0.52 AML other m 2013-04-21T23:56:05.67
IV.NRCA.HHN. ML:2.0 0.00009445 0.62 AML other m 2013-04-21T23:56:06.03
IV.OFFI.HHE. ML:2.6 0.0003575 0.8 AML other m 2013-04-21T23:56:08.55
IV.OFFI.HHN. ML:2.4 0.000239 0.98 AML other m 2013-04-21T23:56:08.68
IV.PARC.HHE. ML:1.5 0.000041700000000000004 1.24 AML other m 2013-04-21T23:55:57.56
IV.PARC.HHN. ML:1.9 0.00010750000000000001 0.3 AML other m 2013-04-21T23:55:57.09
IV.PCRO.HNE. ML:2.6 0.0019199999999999998 0.3 AML other m 2013-04-21T23:55:40.65
IV.PCRO.HNN. ML:2.6 0.001815 0.42 AML other m 2013-04-21T23:55:40.81
IV.PE3.EHN. ML:2.1 0.00027 0.38 AML other m 2013-04-21T23:55:51.82
IV.PE3.EHE. ML:2.0 0.0001945 0.36 AML other m 2013-04-21T23:55:51.57
IV.PESA.HHN. ML:1.8 0.00021100000000000003 0.2 AML other m 2013-04-21T23:55:45.25
IV.PESA.HHE. ML:1.8 0.0002585 0.74 AML other m 2013-04-21T23:55:45.37
IV.PIEI.HHN. ML:2.1 0.00023050000000000002 0.76 AML other m 2013-04-21T23:55:50.78
IV.PIEI.HHE. ML:2.0 0.000195 0.46 AML other m 2013-04-21T23:55:51.16
IV.SENI.HNE. ML:3.2 0.020149999999999998 0.08 AML other m 2013-04-21T23:55:35.07
IV.SENI.EHE. ML:2.6 0.004690000000000001 0.96 AML other m 2013-04-21T23:55:35.20
IV.SENI.HNN. ML:3.0 0.012399999999999998 1.16 AML other m 2013-04-21T23:55:35.08
IV.SENI.EHN. ML:2.5 0.00413 0.62 AML other m 2013-04-21T23:55:34.91
IV.SNTG.HHE. ML:1.8 0.000131 0.64 AML other m 2013-04-21T23:55:51.08
IV.SNTG.HHN. ML:2.0 0.000175 0.48 AML other m 2013-04-21T23:55:51.23
IV.SSFR.HHE. ML:2.0 0.000248 0.16 AML other m 2013-04-21T23:55:46.86
IV.SSFR.HHN. ML:2.0 0.00021700000000000002 1.54 AML other m 2013-04-21T23:55:47.75
IV.TERO.HHE. ML:1.6 0.000024 1.1 AML other m 2013-04-21T23:56:11.68
IV.TERO.HHN. ML:1.4 0.000017 0.48 AML other m 2013-04-21T23:56:16.01
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