Earthquake with magnitude of M 2.7 on date 07-10-1985 and time 22:15:29 (Italy) in region Canale di Otranto (Lecce)

A magnitude M 2.7 earthquake occured in region: Canale di Otranto (Lecce), on

  • 07-10-1985 21:15:29 (UTC)
  • 07-10-1985 22:15:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.9480, 18.4350 at 10 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
Andrano LE 6 4871 4871
Castro LE 7 2426 7297
Tricase LE 7 17581 24878
Tiggiano LE 8 2863 27741
Diso LE 8 2980 30721
Corsano LE 8 5558 36279
Spongano LE 10 3733 40012
Montesano Salentino LE 10 2671 42683
Ortelle LE 10 2304 44987
Santa Cesarea Terme LE 10 3015 48002
Alessano LE 11 6434 54436
Miggiano LE 11 3564 58000
Specchia LE 12 4801 62801
Surano LE 12 1655 64456
Gagliano del Capo LE 13 5183 69639
Poggiardo LE 13 6112 75751
Nociglia LE 13 2327 78078
Patù LE 15 1690 79768
San Cassiano LE 15 2032 81800
Castrignano del Capo LE 15 5298 87098
Morciano di Leuca LE 15 3352 90450
Salve LE 15 4634 95084
Presicce LE 15 5435 100519
Botrugno LE 16 2805 103324
Minervino di Lecce LE 16 3654 106978
Acquarica del Capo LE 16 4766 111744
Ruffano LE 17 9812 121556
Uggiano la Chiesa LE 17 4400 125956
Sanarica LE 17 1484 127440
Giuggianello LE 17 1214 128654
Supersano LE 19 4471 133125
Taurisano LE 19 11928 145053
Muro Leccese LE 19 4976 150029
Giurdignano LE 20 1970 151999
Scorrano LE 20 7000 158999

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km SE of Lecce (94773 inhabitants)
87 Km SE of Brindisi (88302 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
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
M 2.7 1985-10-07
21:15:29
39.948 18.435 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 14289
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-10-07 21:15:29 ± 0.797
Latitude 39.9480 ± 0.0743
Longitude 18.4350 ± 0.0427
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 14289

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) 9033.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 209
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00405
Epicentral distance of station farthest from the epicenter (degree) 0.03076
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

M:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 14289
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:44:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.VAY.Z. 1985-10-07T21:16:22.60 10.0 undecidable manual PN 64 3.4188 -0.4 1
--.SKO.Z. 1985-10-07T21:16:18.50 10.0 undecidable manual PN 47 3.0303 0.77 0.8
--.SGO.Z. 1985-10-07T21:16:11.70 10.0 undecidable manual PN 285 2.4531 1.9 0.2
--.SDA.Z. 1985-10-07T21:16:06.20 10.0 undecidable manual PN 20 2.2089 -0.24 1.4
--.ORI.Z. 1985-10-07T21:15:56.00 10.0 undecidable manual PN 274 1.5207 -0.98 0.8
--.BRT.Z. 1985-10-07T21:15:54.00 10.0 undecidable manual PN 313 1.3431 -0.5 1.3
--.PE1.Z. 1985-10-07T21:15:51.00 10.0 undecidable manual PN 318 1.1544 -0.82 1
--.LCI.Z. 1985-10-07T21:15:40.00 10.0 undecidable manual PG 327 0.444 0.45 1.4
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