Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 21-03-2017 and time 09:31:02 (UTC) in region 2 km S San Marco la Catola (FG)

A magnitude ML 2.1 earthquake occured in region: 2 km S San Marco la Catola (FG), on

  • 21-03-2017 09:31:02 (UTC)
  • 21-03-2017 10:31:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.5060, 15.0020 at 25 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
San Marco la Catola FG 2 1012 1012
Volturara Appula FG 4 430 1442
Tufara CB 5 925 2367
Celenza Valfortore FG 7 1598 3965
Gambatesa CB 7 1464 5429
Castelvetere in Val Fortore BN 9 1240 6669
Motta Montecorvino FG 9 730 7399
Carlantino FG 10 980 8379
San Bartolomeo in Galdo BN 11 4867 13246
Volturino FG 11 1743 14989
Pietramontecorvino FG 12 2721 17710
Baselice BN 12 2397 20107
Macchia Valfortore CB 12 576 20683
Castelnuovo della Daunia FG 13 1445 22128
Alberona FG 13 985 23113
Casalvecchio di Puglia FG 14 1877 24990
Pietracatella CB 14 1375 26365
Riccia CB 14 5262 31627
Casalnuovo Monterotaro FG 15 1556 33183
Sant'Elia a Pianisi CB 17 1818 35001
Roseto Valfortore FG 17 1074 36075
Foiano di Val Fortore BN 17 1410 37485
Jelsi CB 17 1781 39266
Colletorto CB 18 1938 41204
Monacilioni CB 20 523 41727
Castelpagano BN 20 1483 43210
Montefalcone di Val Fortore BN 20 1525 44735

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SW of San Severo (53905 inhabitants)
45 Km W of Foggia (151991 inhabitants)
46 Km NE of Benevento (60091 inhabitants)
68 Km N of Avellino (54857 inhabitants)
74 Km NE of Caserta (76326 inhabitants)
78 Km W of Manfredonia (57279 inhabitants)
80 Km W of Cerignola (58396 inhabitants)
82 Km NE of Acerra (59573 inhabitants)
87 Km NE of Afragola (65057 inhabitants)
89 Km NE of Aversa (53047 inhabitants)
89 Km NE of Casoria (77642 inhabitants)
93 Km NE of Giugliano in Campania (122974 inhabitants)
93 Km N of Cava de' Tirreni (53659 inhabitants)
93 Km NE of Scafati (50787 inhabitants)
93 Km NE of Portici (55274 inhabitants)
94 Km N of Salerno (135261 inhabitants)
95 Km NE of Ercolano (53709 inhabitants)
96 Km NE of Marano di Napoli (59874 inhabitants)
96 Km NE of Torre del Greco (86275 inhabitants)
97 Km NE of Napoli (974074 inhabitants)
100 Km N of Battipaglia (50786 inhabitants)
100 Km NE of Castellammare di Stabia (66466 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 2017-03-21
09:31:02		 41.506 15.0023 25 2018-01-10
09:55:02		 Bollettino Sismico Italiano INGV 48845091
Reviewed
Rev100 		ML 2.0 2017-03-21
09:31:02		 41.5058 14.9988 25 2017-03-21
09:49:31		 Sala Sismica INGV-Roma 42732731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-03-21 09:31:02 ± 0.12
Latitude 41.5060 ± 0.0045
Longitude 15.0023 ± 0.0072
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 48845091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 563
Semi-minor axis of confidence ellipse (meter) 317
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 47
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.81568
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 42732731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-03-21 09:49:31

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations 17
Type of magnitude ML
Reference to an origin 48845091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-08-09 10:52:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SEI.HHZ. 2017-03-21T09:33:01.66 3.0 undecidable manual Sg 19.16 0
GU.ENR.HHZ. 2017-03-21T09:32:54.12 3.0 undecidable manual Pg 20.91 0
IV.HLNI.HHZ. 2017-03-21T09:32:53.78 3.0 undecidable manual Sn 0.48 0
AC.VLO.HHZ. 2017-03-21T09:32:51.57 3.0 undecidable manual Sg 12.33 0
IV.AGST.EHZ. 2017-03-21T09:32:51.55 3.0 undecidable manual Sn -4.07 0
IV.IMOL.HNZ. 2017-03-21T09:32:47.39 3.0 undecidable manual Sn 4.25 0
IV.SARZ.HHZ. 2017-03-21T09:32:42.76 3.0 negative manual Pg 18.110001 0
IV.EUCT.HNZ. 2017-03-21T09:32:27.50 3.0 positive manual Pn 1.81 0
IV.MCIV.HHZ. 2017-03-21T09:32:20.66 3.0 undecidable manual Sn 0.7 0
IV.SPS2.HHZ. 2017-03-21T09:32:13.56 3.0 undecidable manual Sn 2.05 0
IV.FOSV.EHZ. 2017-03-21T09:32:13.81 3.0 undecidable manual Sn 2.05 0
IV.T1241.EHZ. 2017-03-21T09:31:57.89 3.0 undecidable manual Sg 2.13 0
IV.MMO1.EHZ. 2017-03-21T09:31:57.07 3.0 undecidable manual Sn -0.72 0
IV.MC2.EHZ. 2017-03-21T09:31:56.41 3.0 undecidable manual Sn -3.28 0
IV.T1245.HHZ. 2017-03-21T09:31:55.63 3.0 undecidable manual Sn -3.12 0
IV.T1214.EHZ. 2017-03-21T09:31:55.33 3.0 undecidable manual Sn -1.51 0
IV.T1218.EHZ. 2017-03-21T09:31:55.80 3.0 undecidable manual Sn -0.86 0
IV.TDS.HHZ. 2017-03-21T09:31:41.64 3.0 undecidable manual Pg 4.72 0
IV.SNAL.HHZ. 2017-03-21T09:31:23.52 0.6 undecidable manual S 165 66.6777 104 0.17 44
IV.MIDA.HHZ. 2017-03-21T09:31:22.49 0.6 undecidable manual S 284 63.8916 105 -0.15 45
IV.CAFE.HHZ. 2017-03-21T09:31:21.43 0.3 undecidable manual S 160 56.499 107 0.69 58
IV.APRC.EHZ. 2017-03-21T09:31:19.25 0.6 undecidable manual S 58 52.8027 109 -0.55 41
IV.SGTA.HHZ. 2017-03-21T09:31:19.75 0.6 undecidable manual S 144 51.0156 109 0.39 43
IV.LPEL.HHZ. 2017-03-21T09:31:18.85 0.6 undecidable manual P 312 90.5427 100 0.66 37
IV.TREM.HHZ. 2017-03-21T09:31:17.43 0.3 undecidable manual P 31 80.2641 102 0.79 54
IV.MSAG.HHZ. 2017-03-21T09:31:16.86 0.3 undecidable manual P 73 78.6657 102 0.46 61
IV.BSSO.HHZ. 2017-03-21T09:31:15.46 0.6 undecidable manual S 278 34.2435 120 0.21 47
IV.PSB1.HHZ. 2017-03-21T09:31:15.36 0.6 undecidable manual S 207 35.1426 119 -0.12 48
IV.SNAL.HHZ. 2017-03-21T09:31:14.16 0.1 undecidable manual P 165 66.6777 104 -0.44 84
IV.SGRT.HHZ. 2017-03-21T09:31:14.69 0.3 undecidable manual P 66 67.377 104 -0.01 68
IV.MELA.HHZ. 2017-03-21T09:31:13.06 0.3 undecidable manual S 25 24.4533 130 -0.05 73
IV.CAFE.HHZ. 2017-03-21T09:31:13.11 0.6 undecidable manual P 160 56.499 107 0.02 47
IV.SACR.HHZ. 2017-03-21T09:31:13.71 0.3 undecidable manual S 244 27.4503 126 -0.03 74
IV.MIDA.HHZ. 2017-03-21T09:31:13.79 0.6 undecidable manual P 284 63.8916 105 -0.4 43
IV.MOCO.HHZ. 2017-03-21T09:31:12.20 0.6 undecidable manual S 139 19.869 137 -0.02 50
IV.SGTA.HHZ. 2017-03-21T09:31:12.25 0.1 undecidable manual P 144 51.0156 109 -0.04 94
IV.APRC.EHZ. 2017-03-21T09:31:12.04 0.1 undecidable manual P 58 52.8027 109 -0.51 84
IV.TRIV.HHZ. 2017-03-21T09:31:12.27 0.6 undecidable manual P 308 47.3193 111 0.52 43
IV.CIGN.HHZ. 2017-03-21T09:31:12.26 0.6 undecidable manual S 334 18.2706 139 0.32 47
IV.VITU.HHZ. 2017-03-21T09:31:11.32 0.3 undecidable manual P 221 47.3193 111 -0.44 65
IV.BSSO.HHZ. 2017-03-21T09:31:10.08 0.1 positive manual P 278 34.2435 120 0.16 94
IV.GATE.HHZ. 2017-03-21T09:31:10.27 0.6 undecidable manual S 276 7.6812 161 -0.24 49
IV.PSB1.HHZ. 2017-03-21T09:31:09.86 0.1 positive manual P 207 35.1426 119 -0.19 94
IV.SACR.HHZ. 2017-03-21T09:31:08.87 0.1 positive manual P 244 27.4503 126 -0.17 96
IV.CIGN.HHZ. 2017-03-21T09:31:08.02 0.1 undecidable manual P 334 18.2706 139 0.01 100
IV.MOCO.HHZ. 2017-03-21T09:31:08.29 0.1 negative manual P 139 19.869 137 0.12 97
IV.MELA.HHZ. 2017-03-21T09:31:08.60 0.1 positive manual P 25 24.4533 130 -0.08 97
IV.GATE.HHZ. 2017-03-21T09:31:07.06 0.3 undecidable manual P 276 7.6812 161 -0.12 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APRC.EHE. ML:2.4 0.0005589999999999999 1.04 AML other m 2017-03-21T09:31:21.73
IV.APRC.EHN. ML:2.3 0.00045650000000000004 0.28 AML other m 2017-03-21T09:31:23.17
IV.BSSO.HHE. ML:1.6 0.0001175 0.24 AML other m 2017-03-21T09:31:18.82
IV.BSSO.HNE. ML:2.0 0.00029499999999999996 0.24 AML other m 2017-03-21T09:31:18.83
IV.BSSO.HHN. ML:1.6 0.0001385 0.86 AML other m 2017-03-21T09:31:16.06
IV.BSSO.HNN. ML:2.0 0.0003435 0.84 AML other m 2017-03-21T09:31:16.07
IV.CIGN.HHN. ML:1.7 0.0002765 0.5 AML other m 2017-03-21T09:31:19.30
IV.CIGN.HHE. ML:1.5 0.00016800000000000002 0.34 AML other m 2017-03-21T09:31:20.81
IV.GATE.HHE. ML:2.3 0.001215 1.32 AML other m 2017-03-21T09:31:09.01
IV.GATE.HNE. ML:2.7 0.00304 0.48 AML other m 2017-03-21T09:31:12.74
IV.GATE.HNN. ML:2.5 0.002125 1.56 AML other m 2017-03-21T09:31:12.97
IV.GATE.HHN. ML:2.5 0.0021799999999999996 1.56 AML other m 2017-03-21T09:31:13.97
IV.LPEL.HHN. ML:2.1 0.000147 0.18 AML other m 2017-03-21T09:31:35.22
IV.LPEL.HHE. ML:2.0 0.0001069 1.76 AML other m 2017-03-21T09:31:35.94
IV.MELA.HHE. ML:2.5 0.00146 0.44 AML other m 2017-03-21T09:31:13.58
IV.MELA.HNE. ML:2.5 0.001375 0.42 AML other m 2017-03-21T09:31:13.58
IV.MELA.HHN. ML:2.6 0.0018050000000000002 0.5 AML other m 2017-03-21T09:31:13.30
IV.MELA.HNN. ML:2.6 0.0017349999999999998 0.5 AML other m 2017-03-21T09:31:13.31
IV.MIDA.HHE. ML:1.8 0.00010985 0.28 AML other m 2017-03-21T09:31:30.13
IV.MIDA.HHN. ML:1.8 0.0001184 1.74 AML other m 2017-03-21T09:31:31.01
IV.MOCO.HNN. ML:1.7 0.000256 0.62 AML other m 2017-03-21T09:31:16.33
IV.MOCO.HHN. ML:1.7 0.00025550000000000003 0.62 AML other m 2017-03-21T09:31:16.33
IV.MOCO.HHE. ML:2.0 0.0004535 0.38 AML other m 2017-03-21T09:31:17.77
IV.MOCO.HNE. ML:2.0 0.000446 0.58 AML other m 2017-03-21T09:31:17.77
IV.MSAG.HNE. ML:2.5 0.00045850000000000003 0.44 AML other m 2017-03-21T09:31:31.15
IV.MSAG.HHN. ML:2.9 0.00113 1.8 AML other m 2017-03-21T09:31:30.06
IV.MSAG.HHE. ML:2.6 0.0005005 1.78 AML other m 2017-03-21T09:31:30.97
IV.MSAG.HNN. ML:2.9 0.001095 1.8 AML other m 2017-03-21T09:31:30.06
IV.PSB1.HHE. ML:2.0 0.00028900000000000003 0.3 AML other m 2017-03-21T09:31:15.64
IV.PSB1.HHN. ML:1.8 0.00023050000000000002 1.52 AML other m 2017-03-21T09:31:17.12
IV.SACR.HNN. ML:1.9 0.0003305 0.32 AML other m 2017-03-21T09:31:14.33
IV.SACR.HHE. ML:2.0 0.00043149999999999997 0.24 AML other m 2017-03-21T09:31:14.76
IV.SACR.HNE. ML:2.0 0.0004115 0.5 AML other m 2017-03-21T09:31:13.89
IV.SACR.HHN. ML:1.9 0.00034750000000000004 1.14 AML other m 2017-03-21T09:31:14.33
IV.SGRT.HHE. ML:2.5 0.0005880000000000001 1.52 AML other m 2017-03-21T09:31:26.04
IV.SGRT.HHN. ML:2.4 0.0004275 1.72 AML other m 2017-03-21T09:31:26.07
IV.SGTA.HHN. ML:1.6 0.00009889999999999999 0.42 AML other m 2017-03-21T09:31:23.45
IV.SGTA.HHE. ML:1.7 0.00011 0.44 AML other m 2017-03-21T09:31:32.47
IV.SNAL.HHN. ML:1.7 0.0000837 0.26 AML other m 2017-03-21T09:31:26.36
IV.SNAL.HHE. ML:1.9 0.00012984999999999998 0.16 AML other m 2017-03-21T09:31:23.68
IV.TREM.HHE. ML:2.4 0.000316 0.68 AML other m 2017-03-21T09:31:31.62
IV.TREM.HHN. ML:3.2 0.002275 0.78 AML other m 2017-03-21T09:31:32.94
IV.TRIV.HHN. ML:1.5 0.00008340000000000001 0.3 AML other m 2017-03-21T09:31:23.17
IV.TRIV.HHE. ML:1.6 0.0000931 0.32 AML other m 2017-03-21T09:31:26.59
IV.VITU.HHN. ML:2.1 0.00034199999999999996 1.2 AML other m 2017-03-21T09:31:24.11
IV.VITU.HHE. ML:2.0 0.00026900000000000003 0.64 AML other m 2017-03-21T09:31:22.32
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