INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of mb 5.1 on date 27-09-2018 and time 12:21:51 (Italy) in region Costa Occidentale Peloponneso (GRECIA)

A magnitude mb 5.1 earthquake occured in region: Costa Occidentale Peloponneso (GRECIA), on

  • 27-09-2018 10:21:51 (UTC)
  • 27-09-2018 12:21:51 (UTC +02:00) Italian time
  • 27-09-2018 13:21:51 (UTC +03:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 36.8, 21.4 at 20 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
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 5.1
Mwp 5.3
Mwpd 5.6
2018-09-27
10:21:51
36.8 21.4 20 2018-09-27
10:33:48
Sala Sismica INGV-Roma 61364901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-27 10:21:51
Latitude 36.80
Longitude 21.40
Depth (km) 20 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 61364901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3102
Semi-minor axis of confidence ellipse (meter) 2933
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 185
Circular confidence region, given by single value of horizontal uncertainty (meter) 3327.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106.603
Number of associated phases, regardless of their use for origin computation 66
Number of defining phases 66
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.44226
Epicentral distance of station closest to the epicenter (degree) 3.17105
Epicentral distance of station farthest from the epicenter (degree) 45.73668
Number of stations at which the event was observed 63
Number of stations from which data was used for origin computation 63
Magnitudes information

Mwp:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 15
Type of magnitude Mwp
Reference to an origin 61364901
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-09-27 10:33:48

Mwpd:5.6

Field Value
Value 5.6
Uncertainty 0
Num. used stations 1
Type of magnitude Mwpd
Reference to an origin 61364901
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-09-27 10:33:48

mb:5.1

Field Value
Value 5.1
Uncertainty 0.2
Num. used stations 45
Type of magnitude mb
Reference to an origin 61364901
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-09-27 10:33:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
DK.ICESG.BHZ.00 2018-09-27T10:30:13.10 10.0 positive automatic P 334 45.7367 1.19604 0
GE.DAG.BHZ. 2018-09-27T10:29:55.10 10.0 positive automatic P 348 43.6609 0.255402 0.678225
II.KURK.BHZ.00 2018-09-27T10:29:43.47 10.0 positive automatic P 52 42.42 -1.35476 0.701213
II.AAK.BHZ.00 2018-09-27T10:29:31.47 10.0 positive automatic P 65 40.5754 1.5222 0.657786
GT.DBIC.BHZ.00 2018-09-27T10:29:10.10 10.0 positive automatic P 225 38.4821 -2.13829 0.795646
RD.LOR.BHZ. 2018-09-27T10:28:42.34 10.0 positive automatic S 314 16.6455 -5.41142 0
II.UOSS.BHZ.00 2018-09-27T10:28:14.02 10.0 positive automatic P 102 31.9162 -1.72665 0.869732
G.ECH.BHZ.00 2018-09-27T10:28:12.70 10.0 positive automatic S 322 15.458 -6.2222 0
II.ARTI.BHZ.00 2018-09-27T10:28:09.77 10.0 negative automatic P 40 31.4611 -1.97835 0.840788
KZ.ABKAR.BHZ. 2018-09-27T10:28:00.58 10.0 negative automatic P 54 30.3842 -1.68256 0.861968
OE.DAVA.BHZ. 2018-09-27T10:27:29.97 10.0 positive automatic S 325 13.5018 -1.5799 0
II.ESK.BHZ.00 2018-09-27T10:27:16.47 10.0 positive automatic P 326 24.923 3.1559 0.952381
II.RAYN.BHZ.00 2018-09-27T10:27:10.05 10.0 positive automatic P 116 24.5951 -0.351674 0.952381
WM.AVE.BHZ. 2018-09-27T10:27:04.05 10.0 negative automatic P 270 23.7573 1.36808 0.930233
LX.MESJ.BHZ. 2018-09-27T10:26:59.32 10.0 positive automatic P 282 23.481 -0.823729 0.97561
GB.MCH1.BHZ. 2018-09-27T10:26:57.00 10.0 negative automatic P 319 22.9255 3.69579 0.925926
PM.PVAQ.BHZ. 2018-09-27T10:26:56.20 10.0 positive automatic P 280 23.1394 -0.354317 0.930233
PM.PESTR.BHZ. 2018-09-27T10:26:52.95 10.0 negative automatic P 284 22.894 -1.0538 0.930233
GE.MTE.BHZ. 2018-09-27T10:26:52.40 10.0 negative automatic P 288 22.8013 -0.690513 0.909091
GE.VSU.BHZ. 2018-09-27T10:26:42.46 10.0 negative automatic P 7 21.9372 -1.31504 0.909091
RD.ROSF.BHZ. 2018-09-27T10:26:38.06 10.0 positive automatic P 310 21.3765 0.269517 0.952381
GB.JSA.BHZ. 2018-09-27T10:26:35.69 10.0 positive automatic P 313 21.0835 1.08696 0.961538
II.OBN.BHZ.00 2018-09-27T10:26:32.62 10.0 positive automatic P 25 21.0249 -1.36722 0.952381
IU.PAB.BHZ.00 2018-09-27T10:26:26.87 10.0 negative automatic P 286 20.3589 -0.0397419 0.930233
RD.MFF.BHZ. 2018-09-27T10:26:09.82 10.0 negative automatic P 308 18.7442 0.668568 0.909091
GE.WLF.BHZ. 2018-09-27T10:25:52.55 10.0 negative automatic pP 324 16.9295 -2.12914 0
PL.SUW.BHZ. 2018-09-27T10:25:50.28 10.0 negative automatic P 4 17.2522 -0.998278 0.952381
RD.LOR.BHZ. 2018-09-27T10:25:44.54 10.0 negative automatic P 314 16.6455 0.81098 0.917431
RD.MTLF.BHZ. 2018-09-27T10:25:36.46 10.0 negative automatic P 300 16.022 0.709293 0.925926
PL.BEL.BHZ. 2018-09-27T10:25:29.44 10.0 positive automatic pP 359 15.0392 -4.24964 0
G.ECH.BHZ.00 2018-09-27T10:25:28.45 10.0 positive automatic P 322 15.458 -0.0195112 0.97561
G.SSB.BHZ.00 2018-09-27T10:25:25.70 10.0 positive automatic P 309 15.2342 0.135505 0.930233
II.BFO.BHZ.00 2018-09-27T10:25:22.87 10.0 positive automatic P 324 14.9756 0.739599 0.888889
PL.KSP.BHZ. 2018-09-27T10:25:22.99 10.0 positive automatic pP 347 14.506 -4.79683 0
MN.BNI.BHZ. 2018-09-27T10:25:08.05 10.0 negative automatic P 311 13.8136 1.60435 0.909091
OE.DAVA.BHZ. 2018-09-27T10:25:05.12 10.0 positive automatic P 325 13.5018 2.89509 0.909091
CZ.KHC.BHZ. 2018-09-27T10:25:01.67 10.0 positive automatic P 338 13.5743 -1.39203 0.952381
GE.EIL.BHZ. 2018-09-27T10:24:59.70 10.0 positive automatic P 118 13.3683 -0.464632 0.930233
OE.KBA.BHZ. 2018-09-27T10:24:39.12 10.0 negative automatic P 332 11.8803 -0.969779 0.869565
IV.PTCC.BHZ. 2018-09-27T10:24:34.35 10.0 positive automatic P 331 11.3201 2.0895 0.454545
MN.VLC.BHZ. 2018-09-27T10:24:31.27 10.0 positive automatic P 315 11.1321 1.6124 0.952381
OE.ARSA.BHZ. 2018-09-27T10:24:30.67 10.0 positive automatic P 339 11.3147 -1.49192 0.930233
RD.PGF.BHZ. 2018-09-27T10:24:29.96 10.0 positive automatic P 305 11.1248 0.303686 0.746269
GE.PSZ.BHZ. 2018-09-27T10:24:28.70 10.0 negative automatic P 355 11.1698 -1.54455 0.930233
GE.CSS.BHZ. 2018-09-27T10:24:13.80 10.0 positive automatic P 97 9.8305 1.99277 0.97561
MN.VSL.BHZ. 2018-09-27T10:24:10.17 10.0 positive automatic P 290 9.8236 -1.53793 0.952381
IV.MGAB.BHZ. 2018-09-27T10:24:07.25 10.0 negative automatic P 313 9.3804 1.5783 0.909091
HU.KOVH.BHZ. 2018-09-27T10:24:06.35 10.0 positive automatic P 346 9.6067 -2.37454 0.909091
MN.BZS.BHZ. 2018-09-27T10:23:56.72 10.0 positive automatic P 1 8.8169 -1.16663 0.909091
MN.BLY.BHZ. 2018-09-27T10:23:53.07 10.0 positive automatic P 339 8.5604 -1.30169 0.869565
KO.ELL.BHZ. 2018-09-27T10:23:33.82 10.0 positive automatic P 88 6.81 3.30205 0.970874
MN.CLTB.BHZ. 2018-09-27T10:23:26.95 10.0 negative automatic P 279 6.5659 -0.169569 0.952381
MN.PDG.BHZ. 2018-09-27T10:23:16.57 10.0 negative automatic P 344 5.8627 -0.734187 0.930233
IV.MRVN.BHZ. 2018-09-27T10:23:16.82 10.0 positive automatic P 318 5.8744 -0.747472 0.930233
HT.ALN.HHZ. 2018-09-27T10:23:12.23 10.0 positive automatic P 40 5.4606 0.442275 0.985222
MN.WDD.BHZ. 2018-09-27T10:23:12.82 10.0 positive automatic P 262 5.6248 -1.21621 0.952381
MN.CUC.BHZ. 2018-09-27T10:23:11.72 10.0 positive automatic P 308 5.4162 0.449055 0.930233
GE.MATE.BHZ. 2018-09-27T10:23:09.30 10.0 positive automatic P 318 5.3112 -0.512131 0.97561
GE.KARP.BHZ. 2018-09-27T10:23:03.60 10.0 positive automatic P 103 4.8132 0.634384 0.888889
MN.TIR.BHZ. 2018-09-27T10:23:01.78 10.0 negative automatic P 346 4.6982 0.439841 0.909091
MN.CEL.BHZ. 2018-09-27T10:22:59.27 10.0 positive automatic P 290 4.6047 -0.863014 0.952381
MN.TIP.BHZ. 2018-09-27T10:22:56.07 10.0 positive automatic P 304 4.3633 -0.757617 0.952381
HT.FNA.HHZ. 2018-09-27T10:22:52.34 10.0 positive automatic P 360 3.9783 0.810054 0.970874
HT.LIT.HHZ. 2018-09-27T10:22:44.52 10.0 negative automatic P 14 3.4052 0.917996 0.980392
GE.APE.BHZ. 2018-09-27T10:22:41.35 10.0 positive automatic P 84 3.309 -0.962117 0.97561
HL.KEK.HHZ. 2018-09-27T10:22:40.54 10.0 positive automatic P 337 3.1711 0.200837 0.966184
TDMT - Time Domain Moment Tensor

TDMT details

Field Value
Magnitude5.2
Scalar Moment7.82885E+23 dyne-cm
Computed depth18 km
QualityAa
Variance Reduction67.89%
Double Couple83%
CLVD17%
ISO0%
Model usedCIA
Modeautomatic
Statuspreliminary

Moment Tensor Components

Component Value
Mrr5.58808E+22
Mtt-6.323133E+23
Mpp5.764325E+23
Mrt9.44001E+22
Mrp4.95013E+22
Mtp-4.87274E+23

Nodal Planes

Name Strike Dip Rake
PN120586-6
PN229684-176

Focal Mechanism

Focal Mechanism

psmeca (GMT documentation)

21.4036 36.8033 18 205 86 -6 296 84 -176 7.82885 23 21.9036 37.3033

TDMT references

More info and references

Station Distribution

Station Distribution

TDMT station details

Sta Dist Azi V R zcor
MG05 185.2 14.8 63.67% 117
MG03 185.1 14.8 70.75% 117
MG00 185.1 14.8 78.4% 117
MG02 185.2 14.9 72.56% 117
MG04 185.1 14.9 61.92% 117
MG07 185.3 14.9 73.54% 117
PSAM 183.2 21.9 67.43% 114
KLV 152.7 25.4 73.48% 112
IMMV 275.7 121.9 60.11% 122
GVD 326 131.2 68.65% 130
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