Earthquake with magnitude of mb 4.7 on date 16-10-2016 and time 03:32:05 (Italy) in region Greece [Land]

A magnitude mb 4.7 earthquake occured in region: Greece [Land], on

  • 16-10-2016 01:32:05 (UTC)
  • 16-10-2016 03:32:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.81, 20.64 at 12 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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 100 mb 4.7
Mwp 4.7
2016-10-16
01:32:05
39.81 20.64 12 2016-10-16
01:48:28
Sala Sismica INGV-Roma 30231181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-16 01:32:05
Latitude 39.81
Longitude 20.64
Depth (km) 12 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 30231181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1516
Semi-minor axis of confidence ellipse (meter) 586
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 20
Circular confidence region, given by single value of horizontal uncertainty (meter) 1279.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62.7722
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.22819
Epicentral distance of station closest to the epicenter (degree) 0.65683
Epicentral distance of station farthest from the epicenter (degree) 39.91324
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 37
Magnitudes information

Mwp:4.7

Field Value
Value 4.7
Uncertainty 0.2
Num. used stations 11
Type of magnitude Mwp
Reference to an origin 30231181
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2016-10-16 01:48:28

mb:4.7

Field Value
Value 4.7
Uncertainty 0.2
Num. used stations 23
Type of magnitude mb
Reference to an origin 30231181
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2016-10-16 01:48:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
II.AAK.BHZ.00 2016-10-16T01:39:39.87 10.0 positive automatic P 68 39.9132 -0.0801858 0.767088
KZ.KKAR.BHZ. 2016-10-16T01:39:14.10 10.0 positive automatic P 68 36.9671 -0.879005 0.816495
II.BRVK.BHZ.00 2016-10-16T01:39:05.67 10.0 positive automatic P 51 35.8384 0.361822 0.829548
II.ARU.BHZ.00 2016-10-16T01:38:10.77 10.0 positive automatic P 43 29.7117 -0.989173 0.952381
KZ.ABKAR.BHZ. 2016-10-16T01:38:06.23 10.0 positive automatic P 58 29.1865 -0.897406 0.963855
II.RAYN.BHZ.00 2016-10-16T01:37:43.22 10.0 negative automatic P 120 26.5401 -0.281253 0.909091
PM.PVAQ.BHZ. 2016-10-16T01:37:00.82 10.0 positive automatic P 273 22.1973 -1.13579 0.952381
II.ESK.BHZ.00 2016-10-16T01:37:00.52 10.0 negative automatic P 322 22.1401 -0.826098 0.869565
G.TAM.BHZ.00 2016-10-16T01:36:55.15 10.0 positive automatic P 221 21.2923 2.69445 0.8
IU.PAB.BHZ.00 2016-10-16T01:36:30.27 10.0 negative automatic P 277 19.1739 0.917912 0.952381
II.OBN.BHZ.00 2016-10-16T01:36:22.07 10.0 positive automatic P 29 18.6199 -1.06309 0.952381
G.ECH.BHZ.00 2016-10-16T01:35:06.40 10.0 positive automatic P 315 12.8026 -1.30244 0.97561
II.BFO.BHZ.00 2016-10-16T01:34:58.77 10.0 positive automatic P 318 12.2565 -1.47154 0.952381
MN.BNI.BHZ. 2016-10-16T01:34:53.27 10.0 positive automatic P 302 11.5433 2.63967 0.97561
OE.DAVA.BHZ. 2016-10-16T01:34:41.48 10.0 positive automatic P 317 10.7886 1.14702 0.952381
IV.MONC.BHZ. 2016-10-16T01:34:40.36 10.0 positive automatic P 304 10.743 0.838205 0.909091
CZ.KHC.BHZ. 2016-10-16T01:34:36.97 10.0 positive automatic P 334 10.589 -0.476521 0.952381
IV.SALO.BHZ. 2016-10-16T01:34:20.12 10.0 positive automatic P 311 9.424 -1.35372 0.930233
OE.KBA.BHZ. 2016-10-16T01:34:15.09 10.0 negative automatic P 326 8.989 -0.607181 0.909091
MN.VLC.BHZ. 2016-10-16T01:34:12.55 10.0 positive automatic P 303 8.7693 0.0666414 0.869565
IV.PTCC.BHZ. 2016-10-16T01:34:07.40 10.0 positive automatic P 324 8.471 -1.02426 0.952381
OE.ARSA.BHZ. 2016-10-16T01:34:05.21 10.0 positive automatic P 335 8.3137 -1.03196 0.888889
IV.MGAB.BHZ. 2016-10-16T01:33:50.59 10.0 positive automatic P 299 7.1115 0.848636 0.930233
MN.AQU.BHZ. 2016-10-16T01:33:35.80 10.0 positive automatic P 297 6.0181 1.05522 0.909091
MN.BLY.BHZ. 2016-10-16T01:33:28.64 10.0 positive automatic P 334 5.5645 0.197469 0.952381
MN.IDI.BHZ. 2016-10-16T01:33:27.41 10.0 positive automatic P 142 5.6331 -2.05564 0.97561
KO.DKL.BHZ. 2016-10-16T01:33:21.02 10.0 positive automatic P 97 4.8913 1.87112 0.980392
MN.DIVS.BHZ. 2016-10-16T01:33:12.09 10.0 positive automatic P 354 4.3194 0.634187 0.952381
HT.ALN.HHZ. 2016-10-16T01:33:10.43 10.0 negative automatic P 73 4.2618 -0.0789842 0.909091
MN.CEL.BHZ. 2016-10-16T01:33:06.20 10.0 positive automatic P 249 3.9981 -0.785752 0.97561
HL.RDO.HHZ. 2016-10-16T01:33:06.19 10.0 negative automatic P 69 3.9551 -0.103391 0.952381
MN.VTS.BHZ. 2016-10-16T01:33:00.34 10.0 negative automatic P 34 3.422 1.134 0.930233
MN.TIP.BHZ. 2016-10-16T01:32:53.35 10.0 negative automatic P 259 3.0615 -0.767636 0.833333
HL.ITM.HHZ. 2016-10-16T01:32:51.20 10.0 negative automatic P 159 2.8122 0.568406 0.943396
MN.PDG.BHZ. 2016-10-16T01:32:51.65 10.0 positive automatic P 339 2.8226 0.93876 0.888889
MN.TIR.BHZ. 2016-10-16T01:32:36.75 10.0 positive automatic P 339 1.6511 2.11124 0.930233
HL.KEK.HHZ. 2016-10-16T01:32:17.97 10.0 negative automatic P 262 0.6568 -0.528634 0.97561
TDMT - Time Domain Moment Tensor

TDMT details

Field Value
Magnitude4.4
Scalar Moment4.2041E+22 dyne-cm
Computed depth17 km
QualityBa
Variance Reduction49.55%
Double Couple94%
CLVD6%
ISO0%
Model usedCIA
Modeautomatic
Statuspreliminary

Moment Tensor Components

Component Value
Mrr2.61397E+22
Mtt-8.7051E+21
Mpp-1.74346E+22
Mrt1.38845E+22
Mrp1.65666E+22
Mtp2.77495E+22

Nodal Planes

Name Strike Dip Rake
PN135159135
PN21085340

Focal Mechanism

Focal Mechanism

psmeca (GMT documentation)

20.6421 39.8057 17 351 59 135 108 53 40 4.2041 22 21.1421 40.3057

TDMT references

More info and references

Station Distribution

Station Distribution

TDMT station details

Sta Dist Azi V R zcor
SCTE 188.2 279.7 67.03% 112
PDG 313.6 338.7 52.5% 131
TIP 341.2 259.5 19.91% 133
TIR 183.4 339.2 56.7% 117
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