Earthquake with magnitude of ML 3.2 on date 28-04-2011 and time 03:14:03 (UTC) in region Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria)

A magnitude ML 3.2 earthquake occured in region: Costa Calabra sud occidentale (Catanzaro, Vibo Valentia, Reggio di Calabria), on

  • 28-04-2011 03:14:03 (UTC)
  • 28-04-2011 05:14:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.9250, 16.0450 at 49 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
Falerna CZ 14 4028 4028
Gizzeria CZ 15 4982 9010
Nocera Terinese CZ 16 4731 13741
San Mango d'Aquino CZ 20 1564 15305
Serra d'Aiello CS 20 458 15763

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km W of Lamezia Terme (70714 inhabitants)
45 Km SW of Cosenza (67546 inhabitants)
48 Km W of Catanzaro (90612 inhabitants)
92 Km NE of Messina (238439 inhabitants)
95 Km W of Crotone (62178 inhabitants)
97 Km NE of Reggio di Calabria (183035 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 2011-04-28
03:14:03
38.925 16.045 49 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1203129
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-04-28 03:14:03 ± 0.08
Latitude 38.9250 ± 0.0045
Longitude 16.0450 ± 0.0081
Depth (km) 49 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1203129

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 693
Semi-minor axis of confidence ellipse (meter) 323
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 292
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 97
Number of defining phases 55
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 2.24201
Number of stations at which the event was observed 72
Number of stations from which data was used for origin computation 37
Magnitude information

ML:3.2

Field Value
Value 3.2
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1203129
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:32:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FAGN.HHZ. 2011-04-28T03:15:04.34 10.0 undecidable manual Pn 0 0 0
IV.HVZN.HHE. 2011-04-28T03:15:03.26 10.0 undecidable manual Pn 0 0 0
IV.CAGR.HHE. 2011-04-28T03:15:03.10 10.0 undecidable manual Pn 0 0 0
IV.STAL.HHN. 2011-04-28T03:15:02.75 10.0 undecidable manual Pn 0 0 0
IV.NOCI.HHN. 2011-04-28T03:15:01.73 10.0 undecidable manual Sn 0 0 0
IV.AMUR.HHN. 2011-04-28T03:15:00.52 10.0 undecidable manual Pn 0 0 0
IV.HCRL.HHE. 2011-04-28T03:14:59.00 10.0 undecidable manual Pn 0 0 0
IV.ECNV.HHZ. 2011-04-28T03:14:59.70 10.0 undecidable manual Pn 0 0 0
IV.HAGA.HHE. 2011-04-28T03:14:59.18 10.0 undecidable manual Pn 0 0 0
IV.MESG.HHE. 2011-04-28T03:14:59.91 10.0 undecidable manual Pn 0 0 0
IV.NOCI.HHN. 2011-04-28T03:14:58.29 10.0 undecidable manual Pn 0 0 0
IV.HLNI.HHE. 2011-04-28T03:14:58.65 10.0 undecidable manual Pn 0 0 0
IV.MIGL.HHE. 2011-04-28T03:14:58.29 10.0 undecidable manual Pn 0 0 0
GE.MATE.HHE. 2011-04-28T03:14:58.88 10.0 undecidable manual Sn 0 0 0
IV.PLLN.SHE. 2011-04-28T03:14:57.20 10.0 undecidable manual Sn 0 0 0
IV.AGST.EHZ. 2011-04-28T03:14:57.40 10.0 undecidable manual Sn 0 0 0
IV.VVLD.HHZ. 2011-04-28T03:14:57.93 10.0 undecidable manual Pn 0 0 0
IV.GIB.HHN. 2011-04-28T03:14:56.29 10.0 undecidable manual Pn 0 0 0
GE.MATE.HHE. 2011-04-28T03:14:55.63 10.0 undecidable manual Pn 0 0 0
IV.LTRZ.EHE. 2011-04-28T03:14:55.16 10.0 undecidable manual Sg 0 0 0
IV.ATPC.HHN. 2011-04-28T03:14:54.95 10.0 undecidable manual Pn 0 0 0
IV.PLLN.SHE. 2011-04-28T03:14:53.90 10.0 undecidable manual Pn 0 0 0
MN.CLTB.HHE. 2011-04-28T03:14:48.09 10.0 undecidable manual Pn 0 0 0
IV.MNO.SHN. 2011-04-28T03:14:48.68 10.0 undecidable manual Sg 0 0 0
IV.SGG.HHZ. 2011-04-28T03:14:48.34 10.0 undecidable manual Pn 0 0 0
IV.MMGO.SHZ. 2011-04-28T03:14:48.11 10.0 undecidable manual Pn 0 0 0
IV.CRJA.SHZ. 2011-04-28T03:14:47.06 10.0 undecidable manual Pn 0 0 0
IV.MRB1.HHZ. 2011-04-28T03:14:42.93 10.0 undecidable manual Pn 0 0 0
IV.NL9.EHZ. 2011-04-28T03:14:41.02 10.0 undecidable manual Pn 0 0 0
IV.ALJA.HHN. 2011-04-28T03:14:40.20 10.0 undecidable manual Pn 0 0 0
IV.IFIL.EHZ. 2011-04-28T03:14:40.40 0.6 undecidable manual Sg 253 133.3665 0.495 37
IV.USI.HHZ. 2011-04-28T03:14:39.05 0.3 undecidable manual Pg 265 248.862 0.076 33
IV.NOV.HHZ. 2011-04-28T03:14:39.35 0.6 undecidable manual Sg 219 127.0728 0.789 33
IV.MMME.HHZ. 2011-04-28T03:14:39.67 0.6 undecidable manual Sg 212 129.5703 0.564 37
IV.ACER.HHZ. 2011-04-28T03:14:37.31 10.0 undecidable manual Sg 0 0 0
IV.MCRV.HHZ. 2011-04-28T03:14:36.01 0.3 undecidable manual Pg 340 219.114 0.731 34
IV.MPAZ.HHZ. 2011-04-28T03:14:35.92 0.6 undecidable manual Sg 182 107.9142 1.438 26
IV.AGST.EHZ. 2011-04-28T03:14:35.86 10.0 undecidable manual Pn 0 0 0
IV.MRLC.HHZ. 2011-04-28T03:14:35.36 0.3 undecidable manual Pg 347 208.5357 1.394 26
IV.MMN.HHZ. 2011-04-28T03:14:35.29 0.6 undecidable manual Sg 358 107.2149 0.957 33
BA.PZUN.HHZ. 2011-04-28T03:14:34.99 10.0 undecidable manual Pg 0 0 0
IV.IVPL.HHZ. 2011-04-28T03:14:34.63 0.6 undecidable manual Sg 237 110.6004 -0.415 41
IV.GALF.HHZ. 2011-04-28T03:14:34.58 10.0 undecidable manual Pg 0 0 0
IV.MPNC.HHZ. 2011-04-28T03:14:33.48 0.6 undecidable manual Sg 215 105.2169 -0.433 41
IV.PTRP.EHZ. 2011-04-28T03:14:33.13 10.0 undecidable manual Pg 0 0 0
IV.SOI.EHZ. 2011-04-28T03:14:32.43 0.6 undecidable manual Sg 180 94.5387 0.782 36
IV.ACER.HHZ. 2011-04-28T03:14:32.02 10.0 undecidable manual Pg 0 0 0
IV.LTRZ.EHE. 2011-04-28T03:14:32.50 10.0 undecidable manual Pg 0 0 0
IV.MILZ.HHZ. 2011-04-28T03:14:32.75 0.6 undecidable manual Sg 224 101.2209 -0.309 42
IV.CDRU.HHZ. 2011-04-28T03:14:31.02 0.3 undecidable manual Pg 340 184.6707 0.019 51
IV.CRAC.EHN. 2011-04-28T03:14:31.54 10.0 undecidable manual Pg 0 0 0
IV.MSRU.HHZ. 2011-04-28T03:14:29.84 0.3 undecidable manual Sg 213 86.9463 -0.201 66
IV.MNO.SHN. 2011-04-28T03:14:29.65 10.0 undecidable manual Pg 0 0 0
IV.CMPR.HHZ. 2011-04-28T03:14:28.86 0.3 undecidable manual Pg 338 167.0106 0.051 55
IV.MSCL.HHZ. 2011-04-28T03:14:28.36 0.6 undecidable manual Sg 196 80.0643 -0.25 44
IV.SLCN.HHZ. 2011-04-28T03:14:28.34 0.3 undecidable manual Pg 348 166.2114 -0.375 52
IV.ORI.HHE. 2011-04-28T03:14:28.22 10.0 undecidable manual Pg 0 0 0
IV.IACL.HHZ. 2011-04-28T03:14:27.22 0.3 undecidable manual Pg 254 152.6361 0.196 57
MN.CEL.HHZ. 2011-04-28T03:14:27.28 0.3 undecidable manual Sg 190 74.9694 -0.275 67
IV.MCEL.HHZ. 2011-04-28T03:14:27.08 0.3 undecidable manual Pg 352 156.621 -0.444 53
IV.MTSN.HHE. 2011-04-28T03:14:26.33 0.1 undecidable manual Pg 351 150.8379 -0.478 73
MN.TIP.HHN. 2011-04-28T03:14:26.77 0.6 undecidable manual Sg 65 67.5768 0.713 40
IV.MGR.HHZ. 2011-04-28T03:14:25.28 0.1 undecidable manual Pg 343 140.8479 -0.295 77
IV.BULG.HHZ. 2011-04-28T03:14:25.74 0.1 undecidable manual Pg 336 140.0487 0.266 78
IV.SIRI.HHZ. 2011-04-28T03:14:25.15 0.1 undecidable manual Pg 354 140.2485 -0.343 77
IV.SCHR.EHZ. 2011-04-28T03:14:25.64 0.1 undecidable manual Pg 1 141.3474 0.01 82
IV.PLAC.HHZ. 2011-04-28T03:14:25.47 0.3 undecidable manual Sg 147 62.7927 0.367 67
IV.MMME.HHZ. 2011-04-28T03:14:24.40 0.3 undecidable manual Pg 212 129.5703 0.221 60
IV.IFIL.EHZ. 2011-04-28T03:14:24.72 0.3 undecidable manual Pg 253 133.3665 0.079 61
IV.SERS.HHZ. 2011-04-28T03:14:24.56 0.6 undecidable manual Sg 77 56.7987 0.631 43
IV.NOV.HHZ. 2011-04-28T03:14:23.79 0.1 undecidable manual Pg 219 127.0728 -0.074 84
MN.CUC.HHZ. 2011-04-28T03:14:22.28 0.1 undecidable manual Pg 351 120.0909 -0.733 71
IV.ILLI.HHZ. 2011-04-28T03:14:22.04 0.3 undecidable manual Pg 241 108.9132 0.414 60
IV.SALB.HHZ. 2011-04-28T03:14:22.02 0.3 undecidable manual Pg 14 108.7134 0.416 61
IV.MMN.HHZ. 2011-04-28T03:14:21.12 0.1 undecidable manual Pg 358 107.2149 -0.303 83
IV.MPAZ.HHZ. 2011-04-28T03:14:21.73 0.1 undecidable manual Pg 182 107.9142 0.221 84
IV.IVPL.HHZ. 2011-04-28T03:14:21.84 0.3 undecidable manual Pg 237 110.6004 0.006 65
IV.CAR1.HHE. 2011-04-28T03:14:21.25 0.6 undecidable manual Sg 21 39.1275 0.51 46
IV.SOI.EHZ. 2011-04-28T03:14:20.03 0.1 undecidable manual Pg 180 94.5387 0.157 88
IV.JOPP.HHZ. 2011-04-28T03:14:20.74 0.3 undecidable manual Sg 201 37.9287 0.188 73
IV.MPNC.HHZ. 2011-04-28T03:14:20.62 0.1 undecidable manual Pg 215 105.2169 -0.561 79
IV.MILZ.HHZ. 2011-04-28T03:14:20.68 0.1 undecidable manual Pg 224 101.2209 -0.008 89
IV.GRI.EHZ. 2011-04-28T03:14:19.68 0.3 undecidable manual Sg 109 34.3434 -0.312 70
IV.PIPA.HHZ. 2011-04-28T03:14:19.72 0.1 undecidable manual Pg 47 90.8424 0.302 86
IV.LADO.HHZ. 2011-04-28T03:14:18.64 0.3 undecidable manual Pg 63 89.7435 -0.649 58
IV.MSRU.HHZ. 2011-04-28T03:14:18.59 0.1 undecidable manual Pg 213 86.9463 -0.356 86
IV.STR3.BHZ. 2011-04-28T03:14:17.31 0.3 undecidable manual Pg 259 71.7726 0.174 68
IV.MSCL.HHZ. 2011-04-28T03:14:17.75 0.1 undecidable manual Pg 196 80.0643 -0.369 86
MN.CEL.HHZ. 2011-04-28T03:14:17.15 0.1 undecidable manual Pg 190 74.9694 -0.36 87
MN.TIP.HHN. 2011-04-28T03:14:16.65 0.1 undecidable manual Pg 65 67.5768 0.006 95
IV.SERS.HHZ. 2011-04-28T03:14:15.55 0.1 undecidable manual Pg 77 56.7987 0.134 95
IV.PLAC.HHZ. 2011-04-28T03:14:15.88 0.1 undecidable manual Pg 147 62.7927 -0.214 92
IV.CORL.HHZ. 2011-04-28T03:14:15.40 10.0 undecidable manual Pg 0 0 0
IV.CAR1.HHE. 2011-04-28T03:14:13.62 0.1 undecidable manual Pg 21 39.1275 0.045 100
IV.JOPP.HHZ. 2011-04-28T03:14:13.52 0.1 undecidable manual Pg 201 37.9287 0.053 100
IV.GRI.EHZ. 2011-04-28T03:14:12.85 0.1 undecidable manual Pg 109 34.3434 -0.293 94
IV.BLLA.EHE. 2011-04-28T03:14:02.24 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