Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 28-02-2017 and time 21:19:32 (Italy) in region 5 km N Valle Castellana (TE)

A magnitude ML 1.6 earthquake occured in region: 5 km N Valle Castellana (TE), on

  • 28-02-2017 20:19:32 (UTC)
  • 28-02-2017 21:19:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7800, 13.4830 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
Valle Castellana TE 5 977 977
Acquasanta Terme AP 6 2916 3893
Roccafluvione AP 9 2010 5903
Rocca Santa Maria TE 11 537 6440
Ascoli Piceno AP 11 49407 55847
Venarotta AP 11 2066 57913
Folignano AP 13 9241 67154
Palmiano AP 14 196 67350
Montegallo AP 14 523 67873
Civitella del Tronto TE 15 5116 72989
Arquata del Tronto AP 15 1178 74167
Cortino TE 18 656 74823
Maltignano AP 18 2401 77224
Campli TE 18 7209 84433
Montemonaco AP 18 604 85037
Torricella Sicura TE 20 2641 87678
Sant'Egidio alla Vibrata TE 20 9811 97489

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NW of Teramo (54892 inhabitants)
48 Km N of L'Aquila (69753 inhabitants)
62 Km W of Montesilvano (53738 inhabitants)
66 Km E of Foligno (57155 inhabitants)
69 Km NW of Pescara (121014 inhabitants)
73 Km E of Terni (111501 inhabitants)
74 Km NW of Chieti (51815 inhabitants)
93 Km S of Ancona (100861 inhabitants)
96 Km E of Perugia (166134 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 1.6 2017-02-28
20:19:32		 42.78 13.4827 20 2019-07-19
13:20:28		 Bollettino Sismico Italiano INGV 49502701
Reviewed
Rev100 		ML 1.7 2017-02-28
20:19:31		 42.7947 13.4897 21 2017-02-28
20:25:34		 Sala Sismica INGV-Roma 41771031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-02-28 20:19:32 ± 0.14
Latitude 42.7800 ± 0.0054
Longitude 13.4827 ± 0.0086
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 49502701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 573
Semi-minor axis of confidence ellipse (meter) 390
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 312
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 25
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) 0.45056
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 49502701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-08-30 09:31:52

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 7
Type of magnitude ML
Reference to an origin 41771031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-02-28 20:25:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRJ.HNZ. 2017-02-28T20:20:19.52 3.0 undecidable manual Sn -4.41 0
IV.MRB1.HHZ. 2017-02-28T20:20:06.79 3.0 undecidable manual Pg 0.22 0
IV.MODR.HHZ. 2017-02-28T20:20:02.87 3.0 undecidable manual Pg 0.9 0
IV.T1215.EHZ. 2017-02-28T20:19:48.76 0.6 undecidable manual S 273 50.0166 103 0.34 44
IV.LNSS.HHZ. 2017-02-28T20:19:46.50 0.6 undecidable manual S 242 41.0256 107 0.4 45
IV.RM33.EHZ. 2017-02-28T20:19:45.34 0.6 undecidable manual S 216 37.1295 109 0.23 47
IV.GUMA.HNN. 2017-02-28T20:19:44.81 0.6 undecidable manual S 339 33.5442 112 0.61 41
IV.T1212.EHZ. 2017-02-28T20:19:44.83 0.6 undecidable manual S 265 35.8419 110 0.06 48
IV.NRCA.HHZ. 2017-02-28T20:19:43.37 0.6 undecidable manual S 281 30.5472 114 -0.1 49
IV.T1299.EHZ. 2017-02-28T20:19:41.99 0.1 undecidable manual S 225 22.9548 123 0.31 94
IV.TERO.HHZ. 2017-02-28T20:19:41.13 0.6 undecidable manual S 150 20.0688 127 0.09 50
IV.SMA1.EHZ. 2017-02-28T20:19:41.11 0.3 undecidable manual S 216 20.4684 127 -0.02 74
IV.T1215.EHZ. 2017-02-28T20:19:41.42 0.1 undecidable manual P 273 50.0166 103 -0.19 92
IV.T1214.EHZ. 2017-02-28T20:19:41.94 0.6 undecidable manual S 264 22.4553 124 0.38 46
IV.MMO1.EHZ. 2017-02-28T20:19:40.50 0.3 undecidable manual S 316 18.3705 130 -0.18 74
IV.LNSS.HHZ. 2017-02-28T20:19:40.10 0.3 undecidable manual P 242 41.0256 107 -0.18 70
IV.T1212.EHZ. 2017-02-28T20:19:39.25 0.1 undecidable manual P 265 35.8419 110 -0.26 93
IV.RM33.EHZ. 2017-02-28T20:19:39.78 0.3 undecidable manual P 216 37.1295 109 0.07 73
IV.GUMA.HNN. 2017-02-28T20:19:39.11 0.1 undecidable manual P 339 33.5442 112 -0.08 98
IV.OFFI.HHE. 2017-02-28T20:19:38.77 0.3 undecidable manual P 44 23.8539 122 0.93 55
IV.NRCA.HHZ. 2017-02-28T20:19:38.45 0.1 undecidable manual P 281 30.5472 114 -0.31 93
IV.T1241.EHZ. 2017-02-28T20:19:38.96 0.1 undecidable manual S 334 9.4794 151 -0.2 100
IV.SMA1.EHZ. 2017-02-28T20:19:37.38 0.1 positive manual P 216 20.4684 127 -0.03 99
IV.T1214.EHZ. 2017-02-28T20:19:37.66 0.1 undecidable manual P 264 22.4553 124 0 100
IV.T1299.EHZ. 2017-02-28T20:19:37.78 0.1 positive manual P 225 22.9548 123 0.05 99
IV.TERO.HHZ. 2017-02-28T20:19:37.20 0.3 undecidable manual P 150 20.0688 127 -0.16 72
IV.T1241.EHZ. 2017-02-28T20:19:36.03 0.1 undecidable manual P 334 9.4794 151 -0.24 98
IV.MMO1.EHZ. 2017-02-28T20:19:36.87 0.1 undecidable manual P 316 18.3705 130 -0.28 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.4 0.00007719999999999999 1.44 AML other m 2017-02-28T20:19:47.26
IV.LNSS.HHN. ML:1.5 0.00009234999999999998 0.1 AML other m 2017-02-28T20:19:47.65
IV.NRCA.HHE. ML:1.9 0.000347 0.18 AML other m 2017-02-28T20:19:43.56
IV.NRCA.HNE. ML:1.9 0.00034599999999999995 0.26 AML other m 2017-02-28T20:19:43.56
IV.NRCA.HHN. ML:2.2 0.0006425 0.12 AML other m 2017-02-28T20:19:43.61
IV.NRCA.HNN. ML:2.2 0.0006129999999999999 0.1 AML other m 2017-02-28T20:19:43.56
IV.SMA1.EHN. ML:1.8 0.0003345 0.24 AML other m 2017-02-28T20:19:41.37
IV.SMA1.EHE. ML:1.5 0.00016350000000000002 0.22 AML other m 2017-02-28T20:19:41.62
IV.T1241.EHE. ML:1.2 0.00011499999999999999 0.38 AML other m 2017-02-28T20:19:39.09
IV.T1241.EHN. ML:1.1 0.0000984 0.7 AML other m 2017-02-28T20:19:39.39
IV.T1299.EHE. ML:1.3 0.00010065000000000001 0.16 AML other m 2017-02-28T20:19:42.17
IV.T1299.EHN. ML:1.5 0.000161 0.34 AML other m 2017-02-28T20:19:42.11
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