Earthquake with magnitude of Mw 4.8 on date 16-08-2017 and time 17:53:29 (Italy) in region Southern Greece [Sea: Greece]

A magnitude Mw 4.8 earthquake occured in region: Southern Greece [Sea: Greece], on

  • 16-08-2017 15:53:29 (UTC)
  • 16-08-2017 17:53:29 (UTC +02:00) Italian time
  • 16-08-2017 18:53:29 (UTC +03:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 36.57, 24.62 at 102 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
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 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
Reviewed Evaluation Mw
Rev501
Mw 4.8 2017-08-16
15:53:29
36.57 24.62 100 2021-02-26
11:23:55
TDMT-INGV Revised 87502451
Reviewed
Rev200
ML 4.9 2017-08-16
15:53:29
36.57 24.62 102 2017-08-16
16:13:40
Sala Sismica INGV-Roma 49091411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-08-16 15:53:29 ± 0
Latitude 36.57
Longitude 24.62
Depth (km) 102 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 200 -> SURVEY-INGV
Event type earthquake
Origin ID 49091411

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 3150
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 1
Number of defining phases 1
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.335
Epicentral distance of station closest to the epicenter (degree)
Epicentral distance of station farthest from the epicenter (degree)
Number of stations at which the event was observed 0
Number of stations from which data was used for origin computation 0
Magnitudes information

Mw:4.8

Field Value
Value 4.8
Uncertainty
Num. used stations
Type of magnitude Mw
Reference to an origin 87502451
Agency INGV
Autore TDMT-INGV Revised
Time of creation (UTC) 2021-02-26 11:23:55

ML:4.9

Field Value
Value 4.9
Uncertainty 0
Num. used stations
Type of magnitude ML
Reference to an origin 49091411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-08-16 16:13:40
TDMT - Time Domain Moment Tensor

TDMT details

Field Value
Magnitude4.8
Scalar Moment2.03494E+23 dyne-cm
Computed depth100 km
QualityAa
Variance Reduction62.54%
Double Couple90%
CLVD10%
ISO0%
Model usedCIA
Modemanual
Statusreviewed

Moment Tensor Components

Component Value
Mrr1.912069E+23
Mtt-3.41513E+22
Mpp-1.570556E+23
Mrt-1.27201E+22
Mrp3.98469E+22
Mtp-9.24481E+22

Nodal Planes

Name Strike Dip Rake
PN1195078
PN221842104

Fault Plane solution

Focal Mechanism

psmeca (GMT documentation)

24.62 36.571 100 19 50 78 218 42 104 2.03494 23 25.12 37.071

TDMT references

More info and references

Station Distribution

Station Distribution

TDMT station details

Sta Dist Azi V R zcor
MG00 312.6 311.7 65.87% 133
APE 97.9 55.1 64.33% 104
XOR 334.6 338.4 55.43% 135
DAT 265 85.3 66.87% 125
IDI 144.4 170.2 64.2% 107
KLV 273.2 307.5 65.02% 128
SIGR 312.6 20 43.33% 131
IMMV 136 205.2 36.25% 109
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download