Earthquake with magnitude of ML 3.2 on date 16-03-2011 and time 18:34:05 (Italy) in region 5 km NE Ragalna (CT)

A magnitude ML 3.2 earthquake occured in region: 5 km NE Ragalna (CT), on

  • 16-03-2011 17:34:05 (UTC)
  • 16-03-2011 18:34:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.67, 14.97 at 16 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
Ragalna CT 5 3924 3924
Nicolosi CT 8 7463 11387
Belpasso CT 9 28108 39495
Biancavilla CT 9 24007 63502
Santa Maria di Licodia CT 9 7641 71143
Pedara CT 10 14102 85245
Trecastagni CT 12 10910 96155
Adrano CT 12 36122 132277
Paternò CT 12 48228 180505
Camporotondo Etneo CT 12 5023 185528
San Pietro Clarenza CT 12 7743 193271
Zafferana Etnea CT 12 9517 202788
Viagrande CT 13 8563 211351
Mascalucia CT 13 31958 243309
Tremestieri Etneo CT 14 20589 263898
Milo CT 14 1087 264985
Gravina di Catania CT 15 25838 290823
Aci Bonaccorsi CT 15 3524 294347
Santa Venerina CT 15 8592 302939
San Giovanni la Punta CT 16 23060 325999
Aci Sant'Antonio CT 16 17984 343983
Sant'Agata li Battiati CT 16 9479 353462
Misterbianco CT 17 49410 402872
San Gregorio di Catania CT 17 11966 414838
Bronte CT 17 19172 434010
Valverde CT 17 7840 441850
Aci Catena CT 17 29851 471701
Sant'Alfio CT 18 1582 473283
Motta Sant'Anastasia CT 18 12116 485399
Acireale CT 19 52622 538021
Maletto CT 20 3920 541941

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km W of Acireale (52622 inhabitants)
22 Km NW of Catania (314555 inhabitants)
74 Km NW of Siracusa (122291 inhabitants)
77 Km SW of Reggio di Calabria (183035 inhabitants)
78 Km SW of Messina (238439 inhabitants)
82 Km E of Caltanissetta (63360 inhabitants)
86 Km N of Ragusa (73313 inhabitants)
89 Km NE of Vittoria (63339 inhabitants)
92 Km N of Modica (54633 inhabitants)
92 Km NE of Gela (75827 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

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows This map shows the distribution of peak ground acceleration expressed as per cent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
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
Bulletin
Rev1000
ML 3.2 2011-03-16
17:34:05
37.67 14.97 16 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1182669
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-03-16 17:34:05 ± 0.1
Latitude 37.67 ± 0.01
Longitude 14.97 ± 0.01
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1182669

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 847
Semi-minor axis of confidence ellipse (meter) 232
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 271
Circular confidence region, given by single value of horizontal uncertainty (meter) 1081.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.39395
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 21
Magnitude information

ML:3.2

Field Value
Value 3.2
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1182669
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:05:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FAGN.HHE. 2011-03-16T17:35:17.14 10.0 undecidable manual Pg 0 0 0
IV.ATPC.HHE. 2011-03-16T17:35:10.13 10.0 undecidable manual Pg 0 0 0
IV.ATVO.HHE. 2011-03-16T17:34:43.09 10.0 undecidable manual Pg 0 0 0
IV.SCHR.EHZ. 2011-03-16T17:34:40.33 10.0 undecidable manual Pg 0 0 0
IV.MTGR.SHZ. 2011-03-16T17:34:40.54 10.0 undecidable manual Pg 0 0 0
IV.MCEL.HHE. 2011-03-16T17:34:38.52 10.0 undecidable manual Pg 0 0 0
IV.GIB.HHN. 2011-03-16T17:34:36.61 10.0 undecidable manual Pg 0 0 0
IV.MMGO.SHZ. 2011-03-16T17:34:34.45 10.0 undecidable manual Pg 0 0 0
IV.PLAC.HHE. 2011-03-16T17:34:31.35 0.3 undecidable manual Pg 56 1.3939 0.272 54
IV.HAVL.HHE. 2011-03-16T17:34:30.41 0.6 undecidable manual Sg 170 0.724 0.652 39
IV.HMDC.HHZ. 2011-03-16T17:34:30.70 0.6 undecidable manual Sg 192 0.7285 0.806 36
IV.IFIL.EHE. 2011-03-16T17:34:29.35 10.0 undecidable manual Sg 0 0 0
IV.RESU.HHN. 2011-03-16T17:34:28.09 10.0 undecidable manual Sg 0 0 0
IV.HVZN.HHZ. 2011-03-16T17:34:24.53 0.1 undecidable manual Sg 202 0.5333 0.401 86
IV.RESU.HHN. 2011-03-16T17:34:24.54 10.0 undecidable manual Pg 0 0 0
IV.SSY.HHZ. 2011-03-16T17:34:24.55 0.1 undecidable manual Sg 171 0.5225 0.74 78
IV.IFIL.EHE. 2011-03-16T17:34:23.82 10.0 undecidable manual Pg 0 0 0
IV.MPAZ.HHN. 2011-03-16T17:34:22.12 0.3 undecidable manual Pg 71 0.8678 0.033 65
IV.AGST.EHN. 2011-03-16T17:34:22.43 0.1 undecidable manual Sg 153 0.4649 0.298 90
IV.MSCL.HHZ. 2011-03-16T17:34:22.14 0.3 undecidable manual Pg 49 0.8562 0.249 63
IV.HAGA.HHN. 2011-03-16T17:34:21.10 0.1 undecidable manual Sg 159 0.4164 0.412 89
IV.HCRL.HHZ. 2011-03-16T17:34:20.41 0.1 undecidable manual Sg 172 0.3939 0.378 90
IV.MEU.SHZ. 2011-03-16T17:34:20.13 10.0 undecidable manual Pg 0 0 0
IV.MMME.HHZ. 2011-03-16T17:34:19.40 0.1 undecidable manual Sg 41 0.3462 0.73 81
IV.HMDC.HHZ. 2011-03-16T17:34:19.12 0.3 undecidable manual Pg 192 0.7285 -0.588 59
IV.HAVL.HHE. 2011-03-16T17:34:19.16 0.1 undecidable manual Pg 170 0.724 -0.471 81
IV.MSRU.HHZ. 2011-03-16T17:34:19.84 0.3 undecidable manual Pg 36 0.7285 0.128 66
IV.HLNI.HHN. 2011-03-16T17:34:18.32 0.1 undecidable manual Sg 193 0.3327 0.047 97
IV.RAFF.HHZ. 2011-03-16T17:34:18.04 0.1 undecidable manual Pg 227 0.6574 -0.46 83
IV.GALF.HHZ. 2011-03-16T17:34:18.24 0.1 undecidable manual Sg 277 0.3184 0.396 89
IV.MILZ.HHN. 2011-03-16T17:34:17.82 0.6 undecidable manual Pg 19 0.6331 -0.263 44
IV.MNO.SHZ. 2011-03-16T17:34:17.73 10.0 undecidable manual Sg 0 0 0
IV.MPNC.HHZ. 2011-03-16T17:34:16.69 0.3 undecidable manual Pg 33 0.563 -0.193 67
IV.SSY.HHZ. 2011-03-16T17:34:15.94 0.1 undecidable manual Pg 171 0.5225 -0.256 89
IV.HVZN.HHZ. 2011-03-16T17:34:15.82 0.1 undecidable manual Pg 202 0.5333 -0.562 83
IV.CAGR.HHZ. 2011-03-16T17:34:14.70 0.1 undecidable manual Pg 262 0.3723 1.039 68
IV.AGST.EHN. 2011-03-16T17:34:14.85 0.1 undecidable manual Pg 153 0.4649 -0.376 88
IV.MNO.SHZ. 2011-03-16T17:34:13.59 10.0 undecidable manual Pg 0 0 0
IV.HCRL.HHZ. 2011-03-16T17:34:13.53 0.1 undecidable manual Pg 172 0.3939 -0.485 87
IV.HAGA.HHN. 2011-03-16T17:34:13.98 0.1 undecidable manual Pg 159 0.4164 -0.415 88
IV.NOV.HHZ. 2011-03-16T17:34:13.59 0.3 undecidable manual Pg 21 0.3786 -0.182 70
IV.GALF.HHZ. 2011-03-16T17:34:12.58 0.1 undecidable manual Pg 277 0.3184 -0.174 95
IV.MMME.HHZ. 2011-03-16T17:34:12.99 0.1 undecidable manual Pg 41 0.3462 -0.24 93
IV.HLNI.HHN. 2011-03-16T17:34:12.22 0.1 undecidable manual Pg 193 0.3327 -0.781 79
IV.ECNV.HHZ. 2011-03-16T17:34:11.04 0.1 undecidable manual Pg 249 0.2149 -0.03 100
IV.ESLN.HHZ. 2011-03-16T17:34:11.30 0.1 undecidable manual Sg 18 0.0216 0.203 100
IV.ESLN.HHZ. 2011-03-16T17:34:08.45 0.1 undecidable manual Pg 18 0.0216 -0.408 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHN. ML:0 0.0175 0.31 AML other m 2011-03-16T17:34:08.45
IV.ESLN.HHE. ML:0 0.0175 0.31 AML other m 2011-03-16T17:34:08.45
IV.ECNV.HHN. ML:2.9 0.0044 0.61 AML other m 2011-03-16T17:34:11.04
IV.ECNV.HHE. ML:2.9 0.0044 0.61 AML other m 2011-03-16T17:34:11.04
IV.GALF.HHN. ML:3 0.00304 0.52 AML other m 2011-03-16T17:34:12.58
IV.GALF.HHE. ML:3 0.003755 0.58 AML other m 2011-03-16T17:34:12.58
IV.MMME.HHN. ML:2.9 0.00315 0.46 AML other m 2011-03-16T17:34:12.99
IV.MMME.HHE. ML:2.9 0.00247 0.44 AML other m 2011-03-16T17:34:12.99
IV.HCRL.HHE. ML:3.7 0.01406 0.16 AML other m 2011-03-16T17:34:13.53
IV.NOV.HHN. ML:3.1 0.003095 0.62 AML other m 2011-03-16T17:34:13.59
IV.NOV.HHE. ML:3.1 0.00439 0.64 AML other m 2011-03-16T17:34:13.59
IV.MNO.SHZ. ML:0 0.002635 0.52 AML other m 2011-03-16T17:34:13.59
IV.HAGA.HHN. ML:3.3 0.00445 0.36 AML other m 2011-03-16T17:34:13.98
IV.HAGA.HHE. ML:3.3 0.005095 0.34 AML other m 2011-03-16T17:34:13.98
IV.CAGR.HHN. ML:3.1 0.004055 0.54 AML other m 2011-03-16T17:34:14.70
IV.CAGR.HHE. ML:3.1 0.00476 0.68 AML other m 2011-03-16T17:34:14.70
IV.AGST.EHN. ML:3.4 0.006755 0.36 AML other m 2011-03-16T17:34:14.85
IV.AGST.EHE. ML:3.4 0.00414 0.36 AML other m 2011-03-16T17:34:14.85
IV.HVZN.HHN. ML:3.4 0.004735 0.4 AML other m 2011-03-16T17:34:15.82
IV.HVZN.HHE. ML:3.4 0.005755 0.52 AML other m 2011-03-16T17:34:15.82
IV.SSY.HHN. ML:3.5 0.00811 0.24 AML other m 2011-03-16T17:34:15.94
IV.SSY.HHE. ML:3.5 0.004255 0.74 AML other m 2011-03-16T17:34:15.94
IV.MPNC.HHN. ML:3.1 0.00264 0.54 AML other m 2011-03-16T17:34:16.69
IV.MPNC.HHE. ML:3.1 0.00224 0.58 AML other m 2011-03-16T17:34:16.69
IV.MILZ.HHN. ML:2.9 0.001355 0.44 AML other m 2011-03-16T17:34:17.82
IV.MILZ.HHE. ML:2.9 0.00133 0.32 AML other m 2011-03-16T17:34:17.82
IV.RAFF.HHN. ML:3 0.001385 0.32 AML other m 2011-03-16T17:34:18.04
IV.RAFF.HHE. ML:3 0.001435 0.3 AML other m 2011-03-16T17:34:18.04
IV.HMDC.HHN. ML:3.3 0.00353 0.34 AML other m 2011-03-16T17:34:19.12
IV.HMDC.HHE. ML:3.3 0.002275 0.28 AML other m 2011-03-16T17:34:19.12
IV.HAVL.HHN. ML:3.8 0.008775 0.26 AML other m 2011-03-16T17:34:19.16
IV.HAVL.HHE. ML:3.8 0.006815 0.24 AML other m 2011-03-16T17:34:19.16
IV.MSRU.HHN. ML:2.9 0.001045 0.22 AML other m 2011-03-16T17:34:19.84
IV.MSRU.HHE. ML:2.9 0.001245 0.4 AML other m 2011-03-16T17:34:19.84
IV.MPAZ.HHN. ML:2.7 0.00079 0.4 AML other m 2011-03-16T17:34:22.12
IV.MPAZ.HHE. ML:2.7 0.000345 0.4 AML other m 2011-03-16T17:34:22.12
IV.MSCL.HHN. ML:3 0.00106 0.5 AML other m 2011-03-16T17:34:22.14
IV.MSCL.HHE. ML:3 0.001075 0.34 AML other m 2011-03-16T17:34:22.14
IV.IFIL.EHN. ML:0 0.001585 0.34 AML other m 2011-03-16T17:34:23.82
IV.IFIL.EHE. ML:0 0.001495 0.38 AML other m 2011-03-16T17:34:23.82
IV.MMGO.SHZ. ML:0 0.000175 0.8 AML other m 2011-03-16T17:34:34.45
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
Waveforms Seismic signals in full SEED format Download