INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 2.1 on date 13-07-2017 and time 18:54:54 (Italy) in region 3 km NW Accettura (MT)

A magnitude ML 2.1 earthquake occured in region: 3 km NW Accettura (MT), on

  • 13-07-2017 16:54:54 (UTC)
  • 13-07-2017 18:54:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.51, 16.13 at 38 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Accettura MT 3 1856 1856
Oliveto Lucano MT 5 450 2306
Pietrapertosa PZ 6 1032 3338
Castelmezzano PZ 7 800 4138
Campomaggiore PZ 8 811 4949
Garaguso MT 9 1073 6022
Calciano MT 10 777 6799
San Mauro Forte MT 11 1552 8351
Albano di Lucania PZ 11 1435 9786
Tricarico MT 12 5388 15174
Gorgoglione MT 13 989 16163
Cirigliano MT 14 375 16538
Trivigno PZ 14 678 17216
Stigliano MT 15 4361 21577
Laurenzana PZ 15 1797 23374
Salandra MT 16 2829 26203
Corleto Perticara PZ 16 2511 28714
Guardia Perticara PZ 17 552 29266
Anzi PZ 18 1696 30962
Grassano MT 19 5189 36151
San Chirico Nuovo PZ 19 1368 37519
Brindisi Montagna PZ 19 908 38427

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Potenza (67122 inhabitants)
43 Km W of Matera (60436 inhabitants)
50 Km SW of Altamura (70396 inhabitants)
81 Km S of Andria (100440 inhabitants)
82 Km SW of Bitonto (55540 inhabitants)
86 Km S of Cerignola (58396 inhabitants)
87 Km SW of Molfetta (59874 inhabitants)
87 Km SW of Bisceglie (55422 inhabitants)
88 Km S of Trani (56217 inhabitants)
91 Km S of Barletta (94814 inhabitants)
92 Km SW of Bari (326344 inhabitants)
93 Km W of Taranto (201100 inhabitants)
98 Km E of Battipaglia (50786 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours)

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Date and Time (UTC) Latitude Longitude Magnitude Depth (km) Author Location ID
Rev 100 2017-07-13
16:54:54
40.51 16.13 ML 2.1 39 Sala Sismica INGV-Roma 47860451
Best location and best magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-07-13 16:54:54 ± 0.08
Latitude 40.51 ± 0.01
Longitude 16.13 ± 0.01
Depth (km) 39 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 47860451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 830
Semi-minor axis of confidence ellipse (meter) 631
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 324
Circular confidence region, given by single value of horizontal uncertainty (meter) 830
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 45
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.14664
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 24
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 60
Type of magnitude ML
Reference to an origin 47860451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-07-13 17:04:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FOSV.EHZ. 2017-07-13T16:56:47.85 3.0 undecidable manual Sg 14.28 0
IV.PE3.EHZ. 2017-07-13T16:56:04.76 3.0 positive manual Pg 8.71 0
GU.GSCL.HHZ. 2017-07-13T16:56:39.91 3.0 undecidable manual Pg 24.139999 0
IV.T1216.EHZ. 2017-07-13T16:56:38.85 3.0 undecidable manual Sg 15.58 0
IV.MC2.EHZ. 2017-07-13T16:56:38.57 3.0 undecidable manual Sg 17.08 0
IV.T1245.HHZ. 2017-07-13T16:56:37.73 3.0 undecidable manual Sg 17.209999 0
IV.NDIM.HHZ. 2017-07-13T16:56:20.42 3.0 positive manual Pn 1.73 0
IV.TEOL.HHZ. 2017-07-13T16:56:20.06 3.0 undecidable manual Pn 1.13 0
IV.RIBO.EHZ.01 2017-07-13T16:56:05.15 3.0 positive manual Pn 4.38 0
IV.CRJA.HHZ. 2017-07-13T16:55:47.13 3.0 undecidable manual Pn -1.16 0
IV.RMP.HHZ. 2017-07-13T16:55:44.56 3.0 positive manual Pg 6.14 0
IV.PP3.HNZ. 2017-07-13T16:55:41.74 3.0 undecidable manual Pn -3.99 0
IV.EPZF.HHZ. 2017-07-13T16:55:37.26 3.0 positive manual Pn -0.23 0
IV.APRC.HHZ. 2017-07-13T16:55:32.95 3.0 undecidable manual Sn -1.22 0
IV.SGRT.HHZ. 2017-07-13T16:55:31.57 3.0 undecidable manual Sn -1.48 0
IV.NOCI.HHZ. 2017-07-13T16:55:08.89 0.1 undecidable manual P 68 0.759 91 -0.24 85
IV.MGR.HHZ. 2017-07-13T16:55:06.34 0.1 undecidable manual P 230 0.5792 91 -0.31 88
MN.CUC.HHZ. 2017-07-13T16:55:06.08 0.1 undecidable manual P 205 0.5729 92 -0.48 84
IV.CELI.HHZ. 2017-07-13T16:55:15.92 0.1 undecidable manual P 165 1.1466 90 1.43 49
IV.VULT.HHZ. 2017-07-13T16:55:07.69 0.1 undecidable manual P 319 0.5891 91 0.9 73
IV.AMUR.HHZ. 2017-07-13T16:55:05.89 0.1 undecidable manual P 42 0.5315 92 -0.11 91
IV.MRVN.HHZ. 2017-07-13T16:55:06.07 0.1 undecidable manual P 5 0.5495 92 -0.17 90
IV.LTRZ.EHZ. 2017-07-13T16:55:05.81 0.1 undecidable manual P 80 0.5297 92 -0.16 91
GE.MATE.HHZ. 2017-07-13T16:55:04.84 0.1 undecidable manual P 72 0.4551 95 -0.1 94
IV.PALZ.HHZ. 2017-07-13T16:55:05.01 0.1 undecidable manual P 343 0.4497 96 0.14 94
IV.TDS.HHZ. 2017-07-13T16:55:11.63 0.1 undecidable manual P 169 0.8669 91 1 66
IV.SLCN.HHZ. 2017-07-13T16:55:04.18 0.1 undecidable manual P 252 0.3993 104 0 97
IV.MTSN.HHZ. 2017-07-13T16:55:03.39 0.1 undecidable manual P 230 0.3804 107 -0.54 88
IV.SIRI.HHZ. 2017-07-13T16:55:03.16 0.6 positive manual P 211 0.3876 106 -0.86 39
IV.MCEL.HHZ. 2017-07-13T16:55:02.71 0.1 undecidable manual P 233 0.3139 119 -0.37 93
IV.ACER.HHZ. 2017-07-13T16:55:03.23 0.1 negative manual P 332 0.3085 120 0.21 95
IV.CRAC.EHZ. 2017-07-13T16:55:02.47 0.1 undecidable manual P 120 0.2653 127 -0.06 100
IV.BULG.HHZ. 2017-07-13T16:55:08.84 0.1 undecidable manual P 233 0.7204 91 0.23 87
IV.MIGL.HHZ. 2017-07-13T16:55:02.36 0.1 undecidable manual P 69 0.2518 130 -0.02 100
IV.CMPR.HHZ. 2017-07-13T16:55:07.77 0.1 undecidable manual P 253 0.6601 91 0 92
IV.CDRU.HHZ. 2017-07-13T16:55:07.11 0.3 negative manual P 268 0.6295 91 -0.23 66
IV.SALB.HHZ. 2017-07-13T16:55:06.85 0.6 positive manual P 166 0.6565 91 -0.86 35
IV.PTRP.HHZ. 2017-07-13T16:55:01.36 0.1 undecidable manual P 279 0.054 168 0.39 94
BA.PZUN.HHZ. 2017-07-13T16:55:03.15 0.3 positive manual P 298 0.2797 125 0.46 67
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTRP.HHN. ML:2.2 0.0005655 0.86 AML other m 2017-07-13T16:55:07.26
IV.PTRP.HHE. ML:2 0.000358 0.92 AML other m 2017-07-13T16:55:08.28
IV.MIGL.HHE. ML:2.2 0.000464 1.7 AML other m 2017-07-13T16:55:09.91
IV.MCEL.HHE. ML:3 0.002305 0.3 AML other m 2017-07-13T16:55:09.32
IV.MCEL.HNE. ML:2.9 0.002215 0.32 AML other m 2017-07-13T16:55:09.32
IV.MCEL.HHN. ML:2.6 0.0009685 0.5 AML other m 2017-07-13T16:55:09.29
IV.MCEL.HNN. ML:2.6 0.0009295 0.5 AML other m 2017-07-13T16:55:09.29
IV.MIGL.HHN. ML:2.3 0.000565 0.46 AML other m 2017-07-13T16:55:09.98
IV.CRAC.EHE. ML:2.2 0.0005355 1.56 AML other m 2017-07-13T16:55:10.12
IV.CRAC.EHN. ML:2.3 0.000621 1.38 AML other m 2017-07-13T16:55:10.30
IV.ACER.HHN. ML:2.2 0.000387 1.04 AML other m 2017-07-13T16:55:10.40
IV.ACER.HNN. ML:2.2 0.00043 1.04 AML other m 2017-07-13T16:55:10.41
BA.PZUN.HHN. ML:2.2 0.000384 0.6 AML other m 2017-07-13T16:55:10.83
IV.ACER.HNE. ML:2.1 0.0003165 0.44 AML other m 2017-07-13T16:55:10.97
BA.PZUN.HHE. ML:2.2 0.0003835 0.68 AML other m 2017-07-13T16:55:10.98
IV.ACER.HHE. ML:2.1 0.0003215 0.34 AML other m 2017-07-13T16:55:10.81
BA.PZUN.HNE. ML:2.2 0.000429 0.68 AML other m 2017-07-13T16:55:10.98
IV.MTSN.HHN. ML:2.1 0.000308 1.68 AML other m 2017-07-13T16:55:10.15
BA.PZUN.HNN. ML:2.1 0.000375 1.44 AML other m 2017-07-13T16:55:11.83
IV.MTSN.HHE. ML:2.2 0.0003365 0.22 AML other m 2017-07-13T16:55:11.04
IV.SIRI.HNE. ML:2.1 0.0002655 1 AML other m 2017-07-13T16:55:11.46
IV.SIRI.HHE. ML:2.1 0.000283 1.02 AML other m 2017-07-13T16:55:11.45
IV.SIRI.HNN. ML:1.9 0.0001865 0.92 AML other m 2017-07-13T16:55:12.11
IV.SLCN.HHN. ML:2.3 0.00045 0.32 AML other m 2017-07-13T16:55:12.58
IV.SLCN.HHE. ML:2.3 0.0004775 1.56 AML other m 2017-07-13T16:55:12.03
IV.SLCN.HNE. ML:2.3 0.000427 1.56 AML other m 2017-07-13T16:55:12.03
IV.SIRI.HHN. ML:1.9 0.0001795 1.06 AML other m 2017-07-13T16:55:13.56
IV.SLCN.HNN. ML:2.4 0.000575 0.5 AML other m 2017-07-13T16:55:13.17
GE.MATE.HHN. ML:1.9 0.0001505 0.44 AML other m 2017-07-13T16:55:13.23
IV.PALZ.HHN. ML:2.1 0.0002415 1.26 AML other m 2017-07-13T16:55:13.01
GE.MATE.HHE. ML:1.7 0.0001074 0.24 AML other m 2017-07-13T16:55:13.64
IV.PALZ.HHE. ML:1.9 0.0001715 1.44 AML other m 2017-07-13T16:55:13.95
IV.AMUR.HHN. ML:2.1 0.0001905 0.26 AML other m 2017-07-13T16:55:14.32
MN.CUC.HHN. ML:1.8 9.275E-5 0.44 AML other m 2017-07-13T16:55:15.98
MN.CUC.HNN. ML:1.7 8.16E-5 1.48 AML other m 2017-07-13T16:55:16.93
IV.VULT.HHN. ML:1.8 9.52E-5 1 AML other m 2017-07-13T16:55:16.39
IV.MGR.HHN. ML:2.1 0.0001785 0.68 AML other m 2017-07-13T16:55:16.86
IV.MGR.HHE. ML:2 0.0001487 0.7 AML other m 2017-07-13T16:55:16.46
MN.CUC.HHE. ML:1.8 0.00010445 0.48 AML other m 2017-07-13T16:55:17.10
MN.CUC.HNE. ML:1.8 9.17E-5 1 AML other m 2017-07-13T16:55:17.34
IV.AMUR.HHE. ML:1.7 7.9E-5 0.78 AML other m 2017-07-13T16:55:17.46
IV.CDRU.HHN. ML:1.5 4.195E-5 1.08 AML other m 2017-07-13T16:55:18.22
IV.CMPR.HHN. ML:1.5 4.035E-5 0.92 AML other m 2017-07-13T16:55:18.12
IV.CDRU.HHE. ML:1.7 6.305E-5 0.28 AML other m 2017-07-13T16:55:18.90
IV.SALB.HHN. ML:1.9 0.000107 0.2 AML other m 2017-07-13T16:55:20.05
IV.SALB.HHE. ML:2.1 0.0001655 1.56 AML other m 2017-07-13T16:55:20.87
IV.NOCI.HHE. ML:1.9 9.69E-5 1 AML other m 2017-07-13T16:55:20.24
IV.CMPR.HHE. ML:1.6 5.605E-5 0.38 AML other m 2017-07-13T16:55:21.38
IV.BULG.HHN. ML:2.2 0.000212 1.7 AML other m 2017-07-13T16:55:21.88
IV.BULG.HHE. ML:2 0.00012825 0.7 AML other m 2017-07-13T16:55:21.96
IV.CELI.HHE. ML:2 5.92E-5 0.54 AML other m 2017-07-13T16:55:22.32
IV.VULT.HHE. ML:1.7 7.215E-5 1.04 AML other m 2017-07-13T16:55:22.29
IV.NOCI.HHN. ML:2 0.0001215 0.52 AML other m 2017-07-13T16:55:23.49
IV.TDS.HHN. ML:1.4 2.38E-5 1.5 AML other m 2017-07-13T16:55:31.87
IV.TDS.HHE. ML:1.3 2.145E-5 1 AML other m 2017-07-13T16:55:32.79
IV.SGRT.HHE. ML:2 6.15E-5 1.18 AML other m 2017-07-13T16:55:32.98
IV.APRC.HHE. ML:2.2 7.625E-5 0.76 AML other m 2017-07-13T16:55:33.03
IV.APRC.HHN. ML:2.3 0.0001063 0.72 AML other m 2017-07-13T16:55:33.40
IV.CELI.HHN. ML:1.8 4.165E-5 1.58 AML other m 2017-07-13T16:55:39.15
IV.SGRT.HHN. ML:2.1 6.825E-5 0.66 AML other m 2017-07-13T16:55:39.57
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://cnt.rm.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
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 full SEED format Download