Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 20-08-2015 and time 14:52:44 (UTC) in region 4 km S San Marco la Catola (FG)

A magnitude ML 1.2 earthquake occured in region: 4 km S San Marco la Catola (FG), on

  • 20-08-2015 14:52:44 (UTC)
  • 20-08-2015 16:52:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4910, 15.0000 at 20 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 4 1012 1012
Volturara Appula FG 4 430 1442
Tufara CB 5 925 2367
Castelvetere in Val Fortore BN 7 1240 3607
Gambatesa CB 7 1464 5071
Celenza Valfortore FG 8 1598 6669
San Bartolomeo in Galdo BN 9 4867 11536
Motta Montecorvino FG 10 730 12266
Volturino FG 11 1743 14009
Baselice BN 11 2397 16406
Carlantino FG 12 980 17386
Alberona FG 12 985 18371
Pietramontecorvino FG 12 2721 21092
Macchia Valfortore CB 14 576 21668
Riccia CB 14 5262 26930
Castelnuovo della Daunia FG 14 1445 28375
Pietracatella CB 15 1375 29750
Casalvecchio di Puglia FG 15 1877 31627
Roseto Valfortore FG 16 1074 32701
Foiano di Val Fortore BN 16 1410 34111
Casalnuovo Monterotaro FG 17 1556 35667
Jelsi CB 17 1781 37448
Sant'Elia a Pianisi CB 18 1818 39266
Montefalcone di Val Fortore BN 18 1525 40791
Castelpagano BN 19 1483 42274
Biccari FG 19 2800 45074
Colletorto CB 19 1938 47012
Colle Sannita BN 20 2431 49443

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SW of San Severo (53905 inhabitants)
44 Km NE of Benevento (60091 inhabitants)
45 Km W of Foggia (151991 inhabitants)
66 Km N of Avellino (54857 inhabitants)
72 Km NE of Caserta (76326 inhabitants)
78 Km W of Manfredonia (57279 inhabitants)
80 Km W of Cerignola (58396 inhabitants)
80 Km NE of Acerra (59573 inhabitants)
86 Km NE of Afragola (65057 inhabitants)
88 Km NE of Aversa (53047 inhabitants)
88 Km NE of Casoria (77642 inhabitants)
91 Km N of Cava de' Tirreni (53659 inhabitants)
91 Km NE of Giugliano in Campania (122974 inhabitants)
92 Km NE of Scafati (50787 inhabitants)
92 Km NE of Portici (55274 inhabitants)
93 Km N of Salerno (135261 inhabitants)
93 Km NE of Ercolano (53709 inhabitants)
94 Km NE of Marano di Napoli (59874 inhabitants)
95 Km NE of Torre del Greco (86275 inhabitants)
96 Km NE of Napoli (974074 inhabitants)
98 Km N of Battipaglia (50786 inhabitants)
99 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 1.2 2015-08-20
14:52:44		 41.4912 15.0002 20 2016-01-08
08:46:44		 Bollettino Sismico Italiano INGV 22201811
Reviewed
Rev100 		ML 1.1 2015-08-20
14:52:45		 41.5025 14.9683 6 2015-08-20
15:04:14		 Sala Sismica INGV-Roma 20994471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-08-20 14:52:44 ± 0.14
Latitude 41.4912 ± 0.0072
Longitude 15.0002 ± 0.0084
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 22201811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 822
Semi-minor axis of confidence ellipse (meter) 297
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 148
Circular confidence region, given by single value of horizontal uncertainty (meter) 820.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.71496
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 3
Type of magnitude ML
Reference to an origin 22201811
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-11-11 14:39:46

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 3
Type of magnitude ML
Reference to an origin 20994471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-08-20 15:04:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2015-08-20T14:53:19.77 3.0 undecidable manual Pn 0.04 0
IV.MCEL.HHZ. 2015-08-20T14:53:13.64 3.0 undecidable manual P 3.9 0
IV.MSAG.HHZ. 2015-08-20T14:52:59.05 0.3 undecidable manual P 72 79.365 98 0.37 66
IV.BSSO.HHE. 2015-08-20T14:52:57.10 0.6 undecidable manual S 280 34.3434 112 0.07 50
IV.SGRT.HHZ. 2015-08-20T14:52:56.96 0.1 undecidable manual P 64 68.2761 99 -0.03 95
IV.PSB1.HHZ. 2015-08-20T14:52:56.70 0.3 undecidable manual S 208 33.6441 112 -0.17 74
IV.SACR.HHZ. 2015-08-20T14:52:55.30 0.3 undecidable manual S 247 26.5512 119 0.13 75
IV.MELA.HHZ. 2015-08-20T14:52:54.80 0.3 undecidable manual S 24 26.0517 120 -0.24 74
IV.MOCO.HHZ. 2015-08-20T14:52:53.60 0.3 undecidable manual S 136 18.7701 130 0.15 78
IV.CIGN.HHE. 2015-08-20T14:52:53.79 0.6 undecidable manual S 336 19.7691 129 0.14 51
IV.VITU.HHE. 2015-08-20T14:52:53.97 0.6 undecidable manual P 222 46.0206 105 0.33 47
IV.PSB1.HHZ. 2015-08-20T14:52:51.68 0.1 undecidable manual P 208 33.6441 112 -0.14 99
IV.BSSO.HHE. 2015-08-20T14:52:51.62 0.3 undecidable manual P 280 34.3434 112 -0.3 73
IV.MELA.HHZ. 2015-08-20T14:52:50.36 0.1 undecidable manual P 24 26.0517 120 -0.41 95
IV.MOCO.HHZ. 2015-08-20T14:52:50.17 0.1 undecidable manual P 136 18.7701 130 0.32 100
IV.SACR.HHZ. 2015-08-20T14:52:50.62 0.1 positive manual P 247 26.5512 119 -0.23 99
IV.CIGN.HHE. 2015-08-20T14:52:50.46 0.3 undecidable manual P 336 19.7691 129 0.49 71
IV.GATE.HNN. 2015-08-20T14:52:48.83 0.3 undecidable manual P 288 7.881 156 0 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOCO.HHN. ML:0.9 0.00004765 0.84 AML other m 2015-08-20T14:52:56.21
IV.MOCO.HHE. ML:1.2 0.0000786 1.38 AML other m 2015-08-20T14:52:56.81
IV.SACR.HHE. ML:1.2 0.0000708 1 AML other m 2015-08-20T14:52:57.69
IV.SACR.HHN. ML:1.0 0.0000429 1.44 AML other m 2015-08-20T14:53:09.93
IV.SGRT.HHN. ML:1.6 0.00006235 0.2 AML other m 2015-08-20T14:53:08.86
IV.SGRT.HHE. ML:1.7 0.00007345 0.86 AML other m 2015-08-20T14:53:09.93
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