Earthquake with magnitude of ML 1.0 on date 08-08-2006 and time 15:46:44 (Italy) in region 2 km NW Villetta Barrea (AQ)

A magnitude ML 1.0 earthquake occured in region: 2 km NW Villetta Barrea (AQ), on

  • 08-08-2006 13:46:44 (UTC)
  • 08-08-2006 15:46:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.79, 13.91 at 1 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Villetta Barrea AQ 2 653 653
Civitella Alfedena AQ 4 296 949
Opi AQ 7 420 1369
Barrea AQ 8 726 2095
Pescasseroli AQ 10 2203 4298
Scontrone AQ 12 574 4872
Alfedena AQ 12 864 5736
San Donato Val di Comino FR 12 2107 7843
Scanno AQ 13 1847 9690
Settefrati FR 14 728 10418
Roccaraso AQ 15 1627 12045
Montenero Val Cocchiara IS 15 538 12583
Rivisondoli AQ 16 700 13283
Castel di Sangro AQ 16 6538 19821
Picinisco FR 16 1218 21039
Pescocostanzo AQ 17 1128 22167
Rocca Pia AQ 17 178 22345
Pizzone IS 17 329 22674
Villalago AQ 17 568 23242
Gallinaro FR 18 1269 24511
Alvito FR 18 2713 27224
Bisegna AQ 19 223 27447
Castel San Vincenzo IS 20 516 27963
San Biagio Saracinisco FR 20 349 28312

Municipalities with at least 50000 inhabitants

An earthquake occurred to
66 Km SW of Chieti (51815 inhabitants)
75 Km SE of L'Aquila (69753 inhabitants)
79 Km SW of Pescara (121014 inhabitants)
83 Km S of Montesilvano (53738 inhabitants)
87 Km NW of Caserta (76326 inhabitants)
91 Km E of Latina (125985 inhabitants)
94 Km N of Aversa (53047 inhabitants)
94 Km E of Tivoli (56533 inhabitants)
95 Km E of Velletri (53303 inhabitants)
98 Km S of Teramo (54892 inhabitants)
99 Km N of Giugliano in Campania (122974 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 Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 Md 1.7
ML 1.0
2006-08-08
13:46:44
41.79 13.91 1 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 585139
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-08-08 13:46:44 ± 0.16
Latitude 41.79 ± 0.01
Longitude 13.91 ± 0.01
Depth (km) 1 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 585139

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1105
Semi-minor axis of confidence ellipse (meter) 657
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 269
Circular confidence region, given by single value of horizontal uncertainty (meter) 1140.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.23023
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 585139
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:12:16

Md:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 585139
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:12:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TRIV.HHZ. 2006-08-08T13:46:57.06 10.0 undecidable manual Pg 0 0 0
IV.VVLD.EHE. 2006-08-08T13:46:53.65 0.1 undecidable manual Sg 290 0.2302 -0.008 50
IV.CERA.HHN. 2006-08-08T13:46:52.82 0.1 undecidable manual Sg 158 0.2086 -0.01 50
IV.CERA.HHN. 2006-08-08T13:46:49.40 0.1 undecidable manual Pg 158 0.2086 -0.035 100
IV.INTR.HHZ. 2006-08-08T13:46:49.60 0.1 undecidable manual Pg 358 0.2203 -0.097 99
IV.VVLD.EHE. 2006-08-08T13:46:49.95 0.1 undecidable manual Pg 290 0.2302 0.039 100
IV.SDI.SHZ. 2006-08-08T13:46:48.61 0.1 undecidable manual Sg 223 0.1115 -0.497 46
IV.SDI.SHZ. 2006-08-08T13:46:47.64 0.1 undecidable manual Pg 223 0.1115 0.357 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SDI.SHZ. Md:1.8 20 END duration s
IV.CERA.HHN. Md:1.7 17.4 END duration s
IV.CERA.HHE. ML:1 7.5E-5 0.27 AML other m 2006-08-08T13:46:49.40
IV.INTR.HHN. ML:0.8 4.5E-5 0.31 AML other m 2006-08-08T13:46:49.60
IV.INTR.HHE. ML:0.8 4.5E-5 0.31 AML other m 2006-08-08T13:46:49.60
IV.VVLD.EHN. ML:1.2 0.0001 0.64 AML other m 2006-08-08T13:46:49.95
IV.VVLD.EHE. Md:1.9 22.3 END duration s
IV.TRIV.HHN. ML:0 5.0E-5 0.4 AML other m 2006-08-08T13:46:57.06
IV.TRIV.HHE. ML:0 5.5E-5 0.28 AML other m 2006-08-08T13:46:57.06
IV.INTR.HHZ. Md:1.6 15 END duration s
IV.TRIV.HHZ. Md:0 12 END duration s
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://terremoti.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