Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 20-04-2017 and time 20:53:01 (UTC) in region 2 km E Ripabottoni (CB)

A magnitude ML 2.1 earthquake occured in region: 2 km E Ripabottoni (CB), on

  • 20-04-2017 20:53:01 (UTC)
  • 20-04-2017 22:53:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6860, 14.8260 at 21 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
Ripabottoni CB 2 514 514
Provvidenti CB 4 119 633
Morrone del Sannio CB 5 587 1220
Casacalenda CB 6 2135 3355
Campolieto CB 7 839 4194
Sant'Elia a Pianisi CB 8 1818 6012
Castellino del Biferno CB 8 545 6557
Monacilioni CB 8 523 7080
Bonefro CB 9 1384 8464
Petrella Tifernina CB 11 1170 9634
Lupara CB 12 505 10139
San Giuliano di Puglia CB 12 1042 11181
Montelongo CB 12 365 11546
Montorio nei Frentani CB 12 437 11983
Pietracatella CB 12 1375 13358
Castelbottaccio CB 12 312 13670
Macchia Valfortore CB 12 576 14246
San Giovanni in Galdo CB 13 580 14826
Matrice CB 13 1115 15941
Colletorto CB 13 1938 17879
Lucito CB 13 696 18575
Montagano CB 13 1086 19661
Toro CB 13 1391 21052
Guardialfiera CB 13 1065 22117
Santa Croce di Magliano CB 14 4435 26552
Larino CB 15 6793 33345
Civitacampomarano CB 16 417 33762
Campodipietra CB 16 2570 36332
Ripalimosani CB 16 3114 39446
Carlantino FG 16 980 40426
Rotello CB 17 1212 41638
Limosano CB 17 768 42406
Sant'Angelo Limosano CB 18 352 42758
Celenza Valfortore FG 19 1598 44356
Jelsi CB 19 1781 46137
Castelmauro CB 19 1505 47642
Campobasso CB 20 49431 97073
San Biase CB 20 189 97262

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km W of San Severo (53905 inhabitants)
62 Km N of Benevento (60091 inhabitants)
65 Km W of Foggia (151991 inhabitants)
79 Km NE of Caserta (76326 inhabitants)
86 Km N of Avellino (54857 inhabitants)
91 Km NE of Acerra (59573 inhabitants)
91 Km W of Manfredonia (57279 inhabitants)
92 Km SE of Chieti (51815 inhabitants)
95 Km NE of Aversa (53047 inhabitants)
95 Km NE of Afragola (65057 inhabitants)
98 Km NE of Casoria (77642 inhabitants)
99 Km NE of Giugliano in Campania (122974 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 2.1 2017-04-20
20:53:01		 41.6857 14.8265 21 2018-01-10
09:56:12		 Bollettino Sismico Italiano INGV 48772851
Reviewed
Rev100 		ML 2.2 2017-04-20
20:53:01		 41.7148 14.7972 10 2017-04-20
21:00:37		 Sala Sismica INGV-Roma 44150081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-04-20 20:53:01 ± 0.12
Latitude 41.6857 ± 0.0063
Longitude 14.8265 ± 0.0072
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 48772851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 655
Semi-minor axis of confidence ellipse (meter) 288
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 37
Circular confidence region, given by single value of horizontal uncertainty (meter) 660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.06655
Epicentral distance of station farthest from the epicenter (degree) 0.75993
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.4
Num. used stations 19
Type of magnitude ML
Reference to an origin 44150081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-04-20 21:00:37

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 48772851
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-08-08 12:19:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.INTR.HHZ. 2017-04-20T20:53:26.96 0.6 undecidable manual S 296 84.3489 98 0.34 42
IV.LPEL.HHZ. 2017-04-20T20:53:22.35 1.0 undecidable manual S 307 66.5778 100 0.42 22
IV.RNI2.HHZ. 2017-04-20T20:53:19.55 0.6 undecidable manual S 272 55.8996 102 0.41 44
IV.APRC.HHZ. 2017-04-20T20:53:19.91 0.6 undecidable manual S 82 59.8956 101 -0.27 45
IV.PSB1.HHZ. 2017-04-20T20:53:18.09 0.6 undecidable manual S 181 51.3153 104 0.15 47
IV.SGG.HHZ. 2017-04-20T20:53:17.87 0.6 undecidable manual S 228 49.8168 104 0.31 45
IV.INTR.HHZ. 2017-04-20T20:53:15.43 0.1 undecidable manual P 296 84.3489 98 -0.57 78
IV.CAFE.HHZ. 2017-04-20T20:53:15.28 0.6 undecidable manual P 155 80.5638 98 -0.14 44
IV.FRES.HHE. 2017-04-20T20:53:14.06 0.6 undecidable manual S 338 34.4433 112 0.39 46
IV.SGTA.HHZ. 2017-04-20T20:53:14.63 0.3 undecidable manual P 144 75.7686 99 -0.06 68
IV.SACR.HHZ. 2017-04-20T20:53:13.57 0.6 undecidable manual S 197 33.5442 113 0.14 48
IV.MRB1.HHZ. 2017-04-20T20:53:13.35 0.3 undecidable manual P 169 63.5919 101 0.51 63
IV.LPEL.HHZ. 2017-04-20T20:53:13.17 0.1 undecidable manual P 307 66.5778 100 -0.12 91
IV.APRC.HHZ. 2017-04-20T20:53:12.40 0.6 undecidable manual P 82 59.8956 101 0.12 46
IV.MELA.HHZ. 2017-04-20T20:53:11.91 0.6 undecidable manual S 85 24.9528 122 0.5 45
IV.RNI2.HHZ. 2017-04-20T20:53:11.47 0.3 undecidable manual P 272 55.8996 102 -0.21 68
IV.BSSO.HHZ. 2017-04-20T20:53:11.69 0.6 undecidable manual S 231 24.753 122 0.33 47
IV.PSB1.HHZ. 2017-04-20T20:53:10.75 0.1 undecidable manual P 181 51.3153 104 -0.24 91
IV.SGG.HHZ. 2017-04-20T20:53:10.25 0.1 undecidable manual P 228 49.8168 104 -0.52 86
IV.GATE.HHZ. 2017-04-20T20:53:10.46 0.6 undecidable manual S 160 20.3685 129 0.06 50
IV.MOCO.HHZ. 2017-04-20T20:53:10.45 0.6 undecidable manual P 142 44.5221 106 0.47 44
IV.SACR.HHZ. 2017-04-20T20:53:08.24 0.1 positive manual P 197 33.5442 113 -0.14 96
IV.FRES.HHE. 2017-04-20T20:53:08.44 0.6 undecidable manual P 338 34.4433 112 -0.08 49
IV.BSSO.HHZ. 2017-04-20T20:53:07.23 0.1 positive manual P 231 24.753 122 0.04 100
IV.MELA.HHZ. 2017-04-20T20:53:07.37 0.1 negative manual P 85 24.9528 122 0.15 97
IV.CIGN.HHZ. 2017-04-20T20:53:07.55 0.6 undecidable manual S 118 7.3815 157 -0.73 43
IV.GATE.HHZ. 2017-04-20T20:53:07.33 0.3 undecidable manual P 160 20.3685 129 0.7 63
IV.CIGN.HHZ. 2017-04-20T20:53:05.00 0.1 negative manual P 118 7.3815 157 -0.41 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APRC.HHE. ML:2.4 0.000475 1.2 AML other m 2017-04-20T20:53:22.04
IV.APRC.HHN. ML:2.5 0.0006385 0.72 AML other m 2017-04-20T20:53:24.19
IV.BSSO.HNN. ML:2.1 0.000617 0.5 AML other m 2017-04-20T20:53:12.10
IV.BSSO.HHN. ML:1.8 0.00027400000000000005 0.48 AML other m 2017-04-20T20:53:12.11
IV.BSSO.HNE. ML:2.2 0.0008335 1.52 AML other m 2017-04-20T20:53:12.14
IV.BSSO.HHE. ML:1.8 0.000312 1.54 AML other m 2017-04-20T20:53:12.14
IV.CIGN.HHE. ML:2.4 0.0018800000000000002 0.48 AML other m 2017-04-20T20:53:07.87
IV.CIGN.HHN. ML:2.3 0.0016600000000000002 0.42 AML other m 2017-04-20T20:53:07.72
IV.GATE.HNN. ML:2.1 0.0007395 0.74 AML other m 2017-04-20T20:53:15.57
IV.GATE.HHN. ML:2.1 0.0006799999999999999 0.76 AML other m 2017-04-20T20:53:15.58
IV.GATE.HHE. ML:2.2 0.0008325 0.78 AML other m 2017-04-20T20:53:13.74
IV.GATE.HNE. ML:2.2 0.00088 0.78 AML other m 2017-04-20T20:53:13.74
IV.INTR.HHN. ML:2.1 0.000149 0.6 AML other m 2017-04-20T20:53:28.56
IV.INTR.HHE. ML:1.8 0.0000766 0.26 AML other m 2017-04-20T20:53:30.36
IV.LPEL.HHN. ML:2.4 0.00043300000000000006 0.18 AML other m 2017-04-20T20:53:25.28
IV.LPEL.HHE. ML:2.4 0.000398 0.94 AML other m 2017-04-20T20:53:25.50
IV.MOCO.HHN. ML:1.8 0.00016999999999999999 0.28 AML other m 2017-04-20T20:53:24.37
IV.MOCO.HHE. ML:2.1 0.000336 0.4 AML other m 2017-04-20T20:53:22.78
IV.MOCO.HNE. ML:2.1 0.00033650000000000005 0.42 AML other m 2017-04-20T20:53:22.78
IV.MOCO.HNN. ML:1.8 0.00016749999999999998 0.28 AML other m 2017-04-20T20:53:24.37
IV.MRB1.HHN. ML:2.0 0.00016149999999999997 1.64 AML other m 2017-04-20T20:53:33.83
IV.MRB1.HHE. ML:2.0 0.00020150000000000002 0.42 AML other m 2017-04-20T20:53:35.86
IV.PSB1.HHN. ML:1.8 0.00014050000000000003 0.92 AML other m 2017-04-20T20:53:19.93
IV.PSB1.HNN. ML:1.9 0.000168 0.92 AML other m 2017-04-20T20:53:19.93
IV.PSB1.HHE. ML:2.0 0.000224 1.46 AML other m 2017-04-20T20:53:18.84
IV.PSB1.HNE. ML:2.0 0.00021650000000000003 1.48 AML other m 2017-04-20T20:53:18.85
IV.RNI2.HHN. ML:2.2 0.0003035 1.42 AML other m 2017-04-20T20:53:20.13
IV.RNI2.HNN. ML:2.1 0.000297 1.42 AML other m 2017-04-20T20:53:20.13
IV.RNI2.HHE. ML:2.1 0.00028500000000000004 0.14 AML other m 2017-04-20T20:53:19.86
IV.RNI2.HNE. ML:2.1 0.0002665 0.16 AML other m 2017-04-20T20:53:19.94
IV.SACR.HNE. ML:1.9 0.000315 0.52 AML other m 2017-04-20T20:53:15.91
IV.SACR.HHE. ML:2.0 0.00032499999999999993 0.52 AML other m 2017-04-20T20:53:15.91
IV.SACR.HHN. ML:2.3 0.000777 1.6 AML other m 2017-04-20T20:53:13.89
IV.SACR.HNN. ML:2.3 0.000754 1.6 AML other m 2017-04-20T20:53:13.89
IV.SGTA.HHN. ML:2.2 0.0002045 0.58 AML other m 2017-04-20T20:53:30.10
IV.SGTA.HHE. ML:2.1 0.00019350000000000001 0.42 AML other m 2017-04-20T20:53:31.75
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
Waveforms Seismic signals in miniseed + resp format Download