INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of mb 4.3 on date 30-06-2018 and time 02:36:18 (Italy) in region Costa Occidentale Peloponneso (GRECIA)

A magnitude mb 4.3 earthquake occured in region: Costa Occidentale Peloponneso (GRECIA), on

  • 30-06-2018 00:36:18 (UTC)
  • 30-06-2018 02:36:18 (UTC +02:00) Italian time
  • 30-06-2018 03:36:18 (UTC +03:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 36.78, 21.38 at 13 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
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 mb 4.3 2018-06-30
00:36:18
36.78 21.38 13 2018-06-30
05:30:11
Sala Sismica INGV-Roma 58264121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-06-30 00:36:18
Latitude 36.78
Longitude 21.38
Depth (km) 13 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 58264121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3000
Semi-minor axis of confidence ellipse (meter) 2448
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 178
Circular confidence region, given by single value of horizontal uncertainty (meter) 3103.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 183.532
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.879201
Epicentral distance of station closest to the epicenter (degree) 0.58792
Epicentral distance of station farthest from the epicenter (degree) 23.47007
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

mb:4.3

Field Value
Value 4.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude mb
Reference to an origin 58264121
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-06-30 05:30:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
LX.MESJ.BHZ. 2018-06-30T00:41:27.17 10.0 positive automatic P 282 23.4701 -0.0813788 0.930233
MN.TUE.BHZ. 2018-06-30T00:39:26.22 10.0 positive automatic P 321 13.194 1.07879 0.963855
IV.PTCC.BHZ. 2018-06-30T00:38:59.15 10.0 positive automatic P 331 11.3322 -0.336227 0.952381
MN.BZS.BHZ. 2018-06-30T00:38:24.02 10.0 positive automatic P 1 8.84 -1.24239 0.952381
MN.BLY.BHZ. 2018-06-30T00:38:20.72 10.0 positive automatic P 340 8.5762 -0.927552 0.97561
MN.CLTB.BHZ. 2018-06-30T00:37:54.10 10.0 positive automatic P 279 6.5539 0.0851921 0.952381
MN.PDG.BHZ. 2018-06-30T00:37:44.02 10.0 positive automatic P 345 5.8804 -0.585017 0.930233
HL.ARG.HHZ. 2018-06-30T00:37:39.55 10.0 positive automatic P 94 5.4443 0.920539 0.97561
MN.CUC.BHZ. 2018-06-30T00:37:39.02 10.0 positive automatic P 308 5.4178 0.669269 0.97561
HL.RDO.HHZ. 2018-06-30T00:37:38.24 10.0 positive automatic P 35 5.4269 -0.14531 0.990099
GE.MATE.BHZ. 2018-06-30T00:37:36.55 10.0 positive automatic P 318 5.3176 -0.407851 0.952381
MN.CEL.BHZ. 2018-06-30T00:37:26.82 10.0 positive automatic P 290 4.5977 -0.275985 0.952381
MN.TIP.BHZ. 2018-06-30T00:37:23.72 10.0 positive automatic P 305 4.3632 -0.165318 0.97561
HT.FNA.HHZ. 2018-06-30T00:37:19.70 10.0 positive automatic P 360 4.0012 0.797146 0.980392
GE.APE.BHZ. 2018-06-30T00:37:08.55 10.0 negative automatic P 84 3.3272 -1.06476 0.952381
GE.SANT.BHZ. 2018-06-30T00:37:08.96 10.0 negative automatic P 96 3.2978 -0.236408 0.97561
HT.AGG.HHZ. 2018-06-30T00:36:58.25 10.0 positive automatic P 18 2.3631 1.89685 0.980392
HL.ITM.HHZ. 2018-06-30T00:36:29.26 10.0 negative automatic P 47 0.5879 -0.0854109 0.980392
TDMT - Time Domain Moment Tensor

TDMT details

Field Value
Magnitude4.1
Scalar Moment1.70512E+22 dyne-cm
Computed depth19 km
QualityBa
Variance Reduction43.05%
Double Couple79%
CLVD21%
ISO0%
Model usedCIA
Modeautomatic
Statuspreliminary

Moment Tensor Components

Component Value
Mrr-7.11E+20
Mtt-8.9756E+21
Mpp9.6866E+21
Mrt-1.183E+20
Mrp6.538E+21
Mtp1.27731E+22

Nodal Planes

Name Strike Dip Rake
PN134286159
PN273694

Focal Mechanism

Focal Mechanism

psmeca (GMT documentation)

21.3838 36.7805 19 342 86 159 73 69 4 1.70512 22 21.8838 37.2805

TDMT references

More info and references

Station Distribution

Station Distribution

TDMT station details

Sta Dist Azi V R zcor
CHAN 277.2 119.5 25.46% 125
ITM 65.4 47.3 78.98% 99
VLI 139.8 92.4 57.57% 105
VLS 170.2 335.8 73.64% 114
LTHK 114 335 23.91% 105
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download