Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 3.2 on date 19-12-2009 and time 18:24:36 (Italy) in region 10 km SE Maletto (CT)

A magnitude ML 3.2 earthquake occured in region: 10 km SE Maletto (CT), on

  • 19-12-2009 17:24:36 (UTC)
  • 19-12-2009 18:24:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7870, 14.9620 at 26 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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Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Maletto CT 10 3920 3920
Randazzo CT 10 10900 14820
Bronte CT 11 19172 33992
Santa Domenica Vittoria ME 14 980 34972
Moio Alcantara ME 15 717 35689
Milo CT 15 1087 36776
Maniace CT 16 3765 40541
Zafferana Etnea CT 16 9517 50058
Sant'Alfio CT 17 1582 51640
Malvagna ME 17 733 52373
Roccella Valdemone ME 17 666 53039
Linguaglossa CT 17 5403 58442
Ragalna CT 17 3924 62366
Adrano CT 18 36122 98488
Castiglione di Sicilia CT 18 3215 101703
Biancavilla CT 18 24007 125710
Santa Venerina CT 19 8592 134302
Piedimonte Etneo CT 19 3963 138265
Nicolosi CT 20 7463 145728
Francavilla di Sicilia ME 20 3945 149673
Santa Maria di Licodia CT 20 7641 157314

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Acireale (52622 inhabitants)
33 Km NW of Catania (314555 inhabitants)
69 Km SW of Messina (238439 inhabitants)
70 Km SW of Reggio di Calabria (183035 inhabitants)
86 Km E of Caltanissetta (63360 inhabitants)
86 Km NW of Siracusa (122291 inhabitants)
98 Km N of Ragusa (73313 inhabitants)
100 Km NE of Vittoria (63339 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is 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 updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent 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
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 3.2 2009-12-19
17:24:36		 37.787 14.962 26 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1000679
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-12-19 17:24:36 ± 0.13
Latitude 37.7870 ± 0.0072
Longitude 14.9620 ± 0.0102
Depth (km) 26 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1000679

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 896
Semi-minor axis of confidence ellipse (meter) 318
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 301
Circular confidence region, given by single value of horizontal uncertainty (meter) 1204.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.57
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.31301
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 23
Magnitude information

ML:3.2

Field Value
Value 3.2
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1000679
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 19:10:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
NI.ACOM.HHN. 2009-12-19T17:25:54.88 10.0 undecidable manual Pg 0 0 0
IV.GATE.HHN. 2009-12-19T17:25:42.22 10.0 undecidable manual Pg 0 0 0
IV.CDCA.EHE. 2009-12-19T17:25:34.54 10.0 undecidable manual Pg 0 0 0
IV.GUMA.HHZ. 2009-12-19T17:25:29.84 10.0 undecidable manual Pg 0 0 0
IV.GRI.EHZ. 2009-12-19T17:25:24.78 10.0 undecidable manual Sg 0 0 0
IV.PLAC.HHN. 2009-12-19T17:25:22.95 10.0 undecidable manual Pg 0 0 0
IV.SBPO.HHN. 2009-12-19T17:25:21.89 10.0 undecidable manual Pg 0 0 0
IV.STR4.BHE. 2009-12-19T17:25:09.23 10.0 undecidable manual Pg 0 0 0
IV.MTCE.HHE. 2009-12-19T17:25:09.89 10.0 undecidable manual Pg 0 0 0
IV.CSSN.SHZ. 2009-12-19T17:25:06.73 10.0 undecidable manual Pg 0 0 0
IV.MTGR.SHZ. 2009-12-19T17:25:06.48 10.0 undecidable manual Pg 0 0 0
IV.GRI.EHZ. 2009-12-19T17:25:05.00 10.0 undecidable manual Pg 0 0 0
IV.HAVL.HHN. 2009-12-19T17:25:04.08 0.6 undecidable manual Sg 171 92.8404 0.369 42
IV.HMDC.HHZ. 2009-12-19T17:25:03.92 0.3 undecidable manual Sg 190 93.24 0.123 66
IV.FSSB.HHZ. 2009-12-19T17:25:03.45 10.0 undecidable manual Pg 0 0 0
IV.ILLI.HHZ. 2009-12-19T17:25:00.50 10.0 undecidable manual Sg 0 0 0
IV.CORL.HHE. 2009-12-19T17:25:00.03 0.6 undecidable manual Pg 275 145.743 0.446 36
IV.HVZN.HHZ. 2009-12-19T17:24:58.10 0.6 undecidable manual Sg 198 70.9734 0.12 46
IV.SSY.HHZ. 2009-12-19T17:24:58.33 0.6 undecidable manual Sg 172 70.4739 0.461 43
IV.FAVR.SHZ. 2009-12-19T17:24:58.33 0.6 undecidable manual Pg 244 127.7721 0.989 30
IV.ILLI.HHZ. 2009-12-19T17:24:55.59 10.0 undecidable manual Pg 0 0 0
IV.HCRL.HHZ. 2009-12-19T17:24:54.43 0.3 undecidable manual Sg 174 56.1993 0.224 69
IV.ALJA.HHZ. 2009-12-19T17:24:54.99 0.3 undecidable manual Pg 268 106.116 0.929 48
IV.SOI.EHZ. 2009-12-19T17:24:53.28 0.3 undecidable manual Pg 71 100.7214 0.042 65
MN.CEL.HHZ. 2009-12-19T17:24:52.88 0.3 undecidable manual Pg 57 96.8253 0.218 63
IV.MPAZ.HHZ. 2009-12-19T17:24:52.56 0.3 undecidable manual Pg 78 93.3399 0.442 61
IV.HMDC.HHZ. 2009-12-19T17:24:51.60 0.3 undecidable manual Pg 190 93.24 -0.502 60
IV.RESU.HHZ. 2009-12-19T17:24:51.18 0.3 undecidable manual Pg 259 80.9523 0.927 50
IV.IACL.HHE. 2009-12-19T17:24:51.68 0.3 undecidable manual Pg 328 98.2239 -1.191 46
IV.HAVL.HHN. 2009-12-19T17:24:51.52 0.3 undecidable manual Pg 171 92.8404 -0.532 59
IV.RAFF.HHZ. 2009-12-19T17:24:50.07 0.3 undecidable manual Pg 220 81.9513 -0.324 64
IV.CSLB.SHZ. 2009-12-19T17:24:49.43 0.3 undecidable manual Pg 282 80.9523 -0.82 56
IV.GALF.HHZ. 2009-12-19T17:24:49.77 0.3 undecidable manual Sg 256 35.742 0.602 63
IV.GIB.HHZ. 2009-12-19T17:24:49.99 0.6 undecidable manual Pg 286 85.0482 -0.875 36
IV.ECNV.HHN. 2009-12-19T17:24:48.32 0.6 undecidable manual Sg 226 30.5472 0.339 47
IV.MTTG.HHZ. 2009-12-19T17:24:48.42 0.3 undecidable manual Pg 69 68.8755 -0.014 70
IV.MMME.HHZ. 2009-12-19T17:24:48.79 0.3 undecidable manual Sg 57 30.3474 0.842 59
IV.HVZN.HHZ. 2009-12-19T17:24:48.28 0.3 undecidable manual Pg 198 70.9734 -0.463 63
IV.MSRU.HHZ. 2009-12-19T17:24:48.50 0.3 undecidable manual Pg 42 71.2731 -0.29 66
IV.SSY.HHZ. 2009-12-19T17:24:48.37 0.1 undecidable manual Pg 172 70.4739 -0.307 87
IV.IVPL.HHZ. 2009-12-19T17:24:47.73 0.3 undecidable manual Pg 1 65.3901 -0.186 69
IV.HCRL.HHZ. 2009-12-19T17:24:46.20 0.1 undecidable manual Pg 174 56.1993 -0.365 88
IV.ESLN.HHZ. 2009-12-19T17:24:44.35 0.6 undecidable manual Sg 174 10.4784 -0.055 51
IV.GALF.HHZ. 2009-12-19T17:24:43.37 0.1 undecidable manual Pg 256 35.742 -0.284 95
IV.ECNV.HHN. 2009-12-19T17:24:43.42 0.3 undecidable manual Pg 226 30.5472 0.451 68
IV.MMME.HHZ. 2009-12-19T17:24:42.98 0.1 undecidable manual Pg 57 30.3474 0.03 99
IV.ESLN.HHZ. 2009-12-19T17:24:40.73 0.1 negative manual Pg 174 10.4784 -0.176 100
IV.CESI.HHE. 2009-12-19T17:24:38.18 10.0 undecidable manual Pg 0 0 0
IV.SALB.HHE. 2009-12-19T17:24:22.71 10.0 undecidable manual Pg 0 0 0
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols 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 miniseed + resp format Download