Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 11-02-2015 and time 18:20:15 (Italy) in region 6 km SW Acquasanta Terme (AP)

A magnitude ML 2.5 earthquake occured in region: 6 km SW Acquasanta Terme (AP), on

  • 11-02-2015 17:20:15 (UTC)
  • 11-02-2015 18:20:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7360, 13.3610 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
Acquasanta Terme AP 6 2916 2916
Arquata del Tronto AP 7 1178 4094
Accumoli RI 10 667 4761
Valle Castellana TE 11 977 5738
Montegallo AP 12 523 6261
Amatrice RI 13 2657 8918
Rocca Santa Maria TE 15 537 9455
Roccafluvione AP 17 2010 11465
Cortino TE 17 656 12121
Montemonaco AP 19 604 12725
Venarotta AP 20 2066 14791
Campotosto AQ 20 542 15333
Palmiano AP 20 196 15529

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km W of Teramo (54892 inhabitants)
43 Km N of L'Aquila (69753 inhabitants)
59 Km E of Foligno (57155 inhabitants)
62 Km E of Terni (111501 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
76 Km W of Pescara (121014 inhabitants)
79 Km NW of Chieti (51815 inhabitants)
89 Km E of Perugia (166134 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km NE of Tivoli (56533 inhabitants)
99 Km S of Ancona (100861 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 2.5 2015-02-11
17:20:15		 42.736 13.3612 20 2015-10-19
09:27:21		 Bollettino Sismico Italiano INGV 19641831
Reviewed
Rev100 		ML 2.4 2015-02-11
17:20:15		 42.7305 13.3523 26 2015-02-11
17:28:21		 Sala Sismica INGV-Roma 16980581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-02-11 17:20:15 ± 0.1
Latitude 42.7360 ± 0.0036
Longitude 13.3612 ± 0.0061
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 19641831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 468
Semi-minor axis of confidence ellipse (meter) 138
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 66
Circular confidence region, given by single value of horizontal uncertainty (meter) 470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 52
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.00005
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 16980581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-02-11 17:28:19

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 19641831
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-06-11 22:00:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LAV9.HHZ. 2015-02-11T17:20:55.99 3.0 undecidable manual S 3.64 0
IV.ATPI.EHZ. 2015-02-11T17:20:48.60 0.1 undecidable manual S 316 111 95 0.47 76
IV.ARVD.HHZ. 2015-02-11T17:20:44.99 3.0 undecidable manual S 90.8424 0.8 0
IV.SSFR.HHZ. 2015-02-11T17:20:43.50 0.1 undecidable manual S 329 90.7425 97 0.74 71
IV.ATCC.EHZ. 2015-02-11T17:20:39.60 0.1 undecidable manual S 311 76.8675 98 0.51 80
IV.FOSV.EHZ. 2015-02-11T17:20:39.50 0.1 undecidable manual S 322 78.7656 98 -0.1 88
IV.CING.HHZ. 2015-02-11T17:20:38.40 0.1 undecidable manual S 349 72.1722 99 0.55 80
IV.EL6.EHZ. 2015-02-11T17:20:37.60 0.1 undecidable manual S 342 69.0753 99 0.57 80
IV.SNTG.HHZ. 2015-02-11T17:20:36.50 0.1 undecidable manual S 329 66.8775 100 0.04 90
IV.T0110.HHZ. 2015-02-11T17:20:36.50 0.1 undecidable manual S 149 65.6898 100 0.37 85
IV.ASSB.HHZ. 2015-02-11T17:20:35.90 0.1 undecidable manual S 301 66.4779 100 -0.44 84
IV.MGAB.HHZ. 2015-02-11T17:20:34.03 0.1 undecidable manual P 281 103.5186 96 0.66 72
IV.ATPI.EHZ. 2015-02-11T17:20:34.94 0.1 undecidable manual P 316 111 95 0.42 77
IV.FIAM.HHZ. 2015-02-11T17:20:33.90 0.1 undecidable manual S 201 55.5999 102 0.4 86
IV.RMP.HHZ. 2015-02-11T17:20:32.37 3.0 negative manual P -1.86 0
IV.ARRO.EHZ. 2015-02-11T17:20:32.80 0.1 undecidable manual S 250 51.6039 103 0.35 87
IV.CESI.HHZ. 2015-02-11T17:20:31.40 0.1 undecidable manual S 309 47.619 105 -0.02 95
IV.ARVD.HHZ. 2015-02-11T17:20:31.49 3.0 negative manual P 90.8424 0.38 0
IV.TRTR.HHE. 2015-02-11T17:20:31.04 0.1 undecidable manual S 80 45.7209 105 0.11 94
IV.SSFR.HHZ. 2015-02-11T17:20:31.17 0.1 undecidable manual P 329 90.7425 97 -0.25 83
IV.MURB.HHZ. 2015-02-11T17:20:31.39 0.1 undecidable manual P 311 89.5437 97 0.15 85
IV.INTR.HHZ. 2015-02-11T17:20:30.93 0.6 undecidable manual P 151 91.8414 97 -0.67 37
IV.FOSV.EHZ. 2015-02-11T17:20:29.22 0.1 undecidable manual P 322 78.7656 98 -0.38 83
IV.GUMA.HHZ. 2015-02-11T17:20:29.00 0.1 undecidable manual S 357 36.3414 110 0.46 88
IV.CSP1.EHZ. 2015-02-11T17:20:29.60 0.1 undecidable manual S 342 41.4252 107 -0.24 91
IV.ATCC.EHZ. 2015-02-11T17:20:29.13 0.1 undecidable manual P 311 76.8675 98 -0.17 87
IV.FDMO.HHZ. 2015-02-11T17:20:29.00 0.1 undecidable manual S 326 40.0266 108 -0.49 87
IV.CING.HHZ. 2015-02-11T17:20:28.21 0.1 undecidable manual P 349 72.1722 99 -0.38 84
IV.FEMA.HNE. 2015-02-11T17:20:28.30 0.1 undecidable manual S 315 35.6421 111 -0.07 96
IV.CESX.HHZ. 2015-02-11T17:20:27.44 0.1 undecidable manual P 258 64.6908 100 -0.01 92
IV.T0110.HHZ. 2015-02-11T17:20:27.30 0.1 undecidable manual P 149 65.6898 100 -0.29 86
IV.SNTG.HHZ. 2015-02-11T17:20:27.38 0.1 negative manual P 329 66.8775 100 -0.41 84
IV.LNSS.HHZ. 2015-02-11T17:20:27.30 0.1 undecidable manual S 241 30.0477 115 0.3 92
IV.EL6.EHZ. 2015-02-11T17:20:27.76 0.1 undecidable manual P 342 69.0753 99 -0.35 85
IV.RM33.EHZ. 2015-02-11T17:20:26.70 0.1 undecidable manual S 205 27.8499 118 0.22 94
IV.ASSB.HHZ. 2015-02-11T17:20:26.50 0.6 undecidable manual P 301 66.4779 100 -1.21 30
IV.FAGN.HHZ. 2015-02-11T17:20:25.74 0.1 undecidable manual P 161 55.3002 102 -0.28 88
IV.TRTR.HHE. 2015-02-11T17:20:25.42 0.1 undecidable manual P 80 45.7209 105 0.83 76
IV.NRCA.HNZ. 2015-02-11T17:20:25.30 0.1 undecidable manual S 298 22.8549 124 -0.02 99
IV.ARRO.EHZ. 2015-02-11T17:20:25.30 0.1 undecidable manual P 250 51.6039 103 -0.17 91
IV.CAMP.HHZ. 2015-02-11T17:20:25.50 0.1 undecidable manual S 170 22.5552 124 0.24 95
IV.FIAM.HHZ. 2015-02-11T17:20:25.84 0.1 undecidable manual P 201 55.5999 102 -0.24 89
IV.TERO.HHZ. 2015-02-11T17:20:25.40 0.1 undecidable manual S 122 23.4543 123 -0.06 97
IV.CESI.HHZ. 2015-02-11T17:20:24.58 0.1 positive manual P 309 47.619 105 -0.3 89
IV.CSP1.EHZ. 2015-02-11T17:20:23.59 0.1 undecidable manual P 342 41.4252 107 -0.37 89
IV.GUMA.HHZ. 2015-02-11T17:20:23.16 0.1 positive manual P 357 36.3414 110 -0.05 96
IV.OFFI.HHZ. 2015-02-11T17:20:23.30 0.1 undecidable manual P 50 34.4433 112 0.36 90
IV.SMA1.EHZ. 2015-02-11T17:20:23.20 0.6 undecidable manual S 190 11.877 145 -0.02 50
IV.FDMO.HHZ. 2015-02-11T17:20:23.32 0.1 positive manual P 326 40.0266 108 -0.44 88
IV.RM33.EHZ. 2015-02-11T17:20:22.02 0.1 negative manual P 205 27.8499 118 0 98
IV.FEMA.HNE. 2015-02-11T17:20:22.83 0.1 positive manual P 315 35.6421 111 -0.29 91
IV.LNSS.HHZ. 2015-02-11T17:20:22.25 0.1 positive manual P 241 30.0477 115 -0.07 97
IV.NRCA.HNZ. 2015-02-11T17:20:21.13 0.1 positive manual P 298 22.8549 124 -0.22 95
IV.CAMP.HHZ. 2015-02-11T17:20:21.24 0.1 negative manual P 170 22.5552 124 -0.08 97
IV.TERO.HHZ. 2015-02-11T17:20:21.22 0.1 negative manual P 122 23.4543 123 -0.22 94
IV.SMA1.EHZ. 2015-02-11T17:20:20.19 0.1 negative manual P 190 11.877 145 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:2.1 0.00030400000000000007 0.18 AML other m 2015-02-11T17:20:34.24
IV.ARRO.EHN. ML:2.1 0.00032 0.46 AML other m 2015-02-11T17:20:34.34
IV.ARVD.HHE. ML:2.0 0.00012555 0.52 AML other m 2015-02-11T17:20:45.60
IV.ARVD.HHN. ML:1.9 0.0000924 0.56 AML other m 2015-02-11T17:20:50.75
IV.ASSB.HHE. ML:2.5 0.000564 0.26 AML other m 2015-02-11T17:20:36.25
IV.ASSB.HHN. ML:2.4 0.00039049999999999995 0.2 AML other m 2015-02-11T17:20:36.63
IV.ATCC.EHE. ML:2.5 0.000482 0.26 AML other m 2015-02-11T17:20:40.49
IV.ATCC.EHN. ML:2.3 0.00028300000000000005 1.46 AML other m 2015-02-11T17:20:40.55
IV.CAMP.HHE. ML:2.0 0.000585 0.26 AML other m 2015-02-11T17:20:25.67
IV.CAMP.HHN. ML:2.1 0.0006355 0.36 AML other m 2015-02-11T17:20:26.97
IV.CESI.HHN. ML:2.5 0.000748 0.5 AML other m 2015-02-11T17:20:32.15
IV.CESI.HHE. ML:2.8 0.001555 0.5 AML other m 2015-02-11T17:20:32.25
IV.CESX.HHE. ML:1.9 0.0001485 0.36 AML other m 2015-02-11T17:20:40.10
IV.CESX.HHN. ML:2.2 0.0002515 0.22 AML other m 2015-02-11T17:20:41.45
IV.CING.HHN. ML:2.2 0.000253 0.54 AML other m 2015-02-11T17:20:39.14
IV.CING.HHE. ML:2.2 0.00023249999999999999 0.14 AML other m 2015-02-11T17:20:39.95
IV.FAGN.HHE. ML:2.3 0.00047450000000000004 0.6 AML other m 2015-02-11T17:20:40.71
IV.FAGN.HHN. ML:2.3 0.0004425 1.48 AML other m 2015-02-11T17:20:37.89
IV.FDMO.HHN. ML:2.7 0.00173 0.2 AML other m 2015-02-11T17:20:29.54
IV.FDMO.HHE. ML:2.5 0.0010565 1.5 AML other m 2015-02-11T17:20:30.46
IV.FOSV.EHE. ML:2.4 0.00030600000000000007 0.28 AML other m 2015-02-11T17:20:41.25
IV.FOSV.EHN. ML:2.5 0.000406 0.32 AML other m 2015-02-11T17:20:40.45
IV.GUMA.HNE. ML:2.7 0.00168 0.48 AML other m 2015-02-11T17:20:31.28
IV.GUMA.HNN. ML:2.7 0.0015555 0.32 AML other m 2015-02-11T17:20:30.08
IV.GUMA.HHN. ML:2.8 0.00209 0.42 AML other m 2015-02-11T17:20:29.44
IV.GUMA.HHE. ML:2.7 0.001555 0.4 AML other m 2015-02-11T17:20:32.35
IV.INTR.HHE. ML:1.9 0.00009615 0.98 AML other m 2015-02-11T17:20:48.41
IV.INTR.HHN. ML:2.2 0.00016499999999999997 1 AML other m 2015-02-11T17:20:51.24
IV.LNSS.HHE. ML:2.8 0.002915 0.38 AML other m 2015-02-11T17:20:27.70
IV.LNSS.HHN. ML:2.8 0.00259 0.34 AML other m 2015-02-11T17:20:28.16
IV.MGAB.HHN. ML:2.2 0.00014350000000000002 0.48 AML other m 2015-02-11T17:20:51.31
IV.MGAB.HHE. ML:2.1 0.00011899999999999999 0.72 AML other m 2015-02-11T17:20:52.74
IV.MURB.HHN. ML:2.6 0.0004985 1.16 AML other m 2015-02-11T17:20:46.04
IV.MURB.HNN. ML:2.6 0.0005265 0.26 AML other m 2015-02-11T17:20:46.74
IV.MURB.HHE. ML:2.6 0.0004945 0.26 AML other m 2015-02-11T17:20:45.21
IV.MURB.HNE. ML:2.6 0.0004575 0.3 AML other m 2015-02-11T17:20:48.44
IV.NRCA.HHE. ML:2.7 0.002815 0.14 AML other m 2015-02-11T17:20:26.67
IV.NRCA.HHN. ML:2.6 0.0021149999999999997 1.16 AML other m 2015-02-11T17:20:26.97
IV.OFFI.HHN. ML:2.1 0.000503 0.98 AML other m 2015-02-11T17:20:31.43
IV.OFFI.HHE. ML:2.2 0.0006454999999999999 0.6 AML other m 2015-02-11T17:20:35.29
IV.RM33.EHN. ML:3.1 0.00507 0.26 AML other m 2015-02-11T17:20:27.08
IV.RM33.EHE. ML:2.9 0.0035 1.44 AML other m 2015-02-11T17:20:27.93
IV.SMA1.EHE. ML:2.8 0.004265 0.5 AML other m 2015-02-11T17:20:23.62
IV.SMA1.EHN. ML:3.0 0.006565 0.3 AML other m 2015-02-11T17:20:23.62
IV.SNTG.HHN. ML:2.2 0.00023899999999999998 0.16 AML other m 2015-02-11T17:20:38.92
IV.SNTG.HHE. ML:2.2 0.0002665 0.94 AML other m 2015-02-11T17:20:37.44
IV.SSFR.HNN. ML:2.9 0.000855 0.26 AML other m 2015-02-11T17:20:44.35
IV.SSFR.HHN. ML:2.8 0.0007564999999999999 0.26 AML other m 2015-02-11T17:20:44.35
IV.SSFR.HNE. ML:2.8 0.0006699999999999999 0.28 AML other m 2015-02-11T17:20:44.04
IV.SSFR.HHE. ML:2.7 0.0005729999999999999 0.98 AML other m 2015-02-11T17:20:44.05
IV.T0110.HHE. ML:2.5 0.000586 0.48 AML other m 2015-02-11T17:20:37.44
IV.T0110.HHN. ML:2.6 0.0007815 0.34 AML other m 2015-02-11T17:20:37.47
IV.TERO.HHE. ML:2.1 0.0006305000000000001 0.44 AML other m 2015-02-11T17:20:25.86
IV.TERO.HHN. ML:2.0 0.0005085 0.6 AML other m 2015-02-11T17:20:25.80
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