Earthquake with magnitude of Md 4.1 on date 02-02-1987 and time 16:08:43 (UTC) in region 9 km N Centuripe (EN)

A magnitude Md 4.1 earthquake occured in region: 9 km N Centuripe (EN), on

  • 02-02-1987 16:08:43 (UTC)
  • 02-02-1987 17:08:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6980, 14.7410 at 8 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
Centuripe EN 9 5470 5470
Adrano CT 9 36122 41592
Regalbuto EN 10 7277 48869
Biancavilla CT 13 24007 72876
Bronte CT 13 19172 92048
Catenanuova EN 15 4866 96914
Troina EN 16 9373 106287
Santa Maria di Licodia CT 16 7641 113928
Cesarò ME 17 2439 116367
San Teodoro ME 17 1403 117770
Gagliano Castelferrato EN 18 3593 121363
Maletto CT 18 3920 125283
Ragalna CT 19 3924 129207
Maniace CT 19 3765 132972
Paternò CT 20 48228 181200
Agira EN 20 8345 189545

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NW of Catania (314555 inhabitants)
39 Km W of Acireale (52622 inhabitants)
64 Km E of Caltanissetta (63360 inhabitants)
83 Km NE of Gela (75827 inhabitants)
85 Km N of Vittoria (63339 inhabitants)
86 Km N of Ragusa (73313 inhabitants)
86 Km NW of Siracusa (122291 inhabitants)
90 Km SW of Messina (238439 inhabitants)
92 Km SW of Reggio di Calabria (183035 inhabitants)
93 Km N of Modica (54633 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
Md 4.1 1987-02-02
16:08:43
37.698 14.741 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 40269
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-02-02 16:08:43 ± 0.446
Latitude 37.6980 ± 0.0169
Longitude 14.7410 ± 0.0151
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 40269

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) 2297.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 73
Number of defining phases 73
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) 0.00210
Epicentral distance of station farthest from the epicenter (degree) 0.08653
Number of stations at which the event was observed 65
Number of stations from which data was used for origin computation 65
Magnitude information

Md:4.1

Field Value
Value 4.1
Uncertainty
Num. used stations 10
Type of magnitude Md
Reference to an origin 40269
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:40:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.PVL.Z. 1987-02-02T16:11:02.00 10.0 positive manual PN 51 0.0865 -0.13 1.7
--.VAI.Z. 1987-02-02T16:10:58.50 10.0 undecidable manual PN 333 0.0836 0.84 0.6
--.FO1.Z. 1987-02-02T16:10:53.50 10.0 undecidable manual PN 351 0.0810 -0.2 0.9
--.MDI.Z. 1987-02-02T16:10:52.50 10.0 undecidable manual PN 336 0.0801 0.25 0.9
--.RBL.Z. 1987-02-02T16:10:52.50 10.0 undecidable manual PN 354 0.0790 1.92 0.1
--.DA9.Z. 1987-02-02T16:10:51.00 10.0 undecidable manual PN 322 0.0795 -0.36 0.9
--.CTI.Z. 1987-02-02T16:10:49.00 10.0 negative manual PN 345 0.0779 0.14 1.9
--.SAL.Z. 1987-02-02T16:10:48.00 10.0 undecidable manual PN 339 0.0766 1.16 0.4
--.LRG.Z. 1987-02-02T16:10:46.00 10.0 undecidable manual PN 314 0.0771 -1.77 0.1
--.FRF.Z. 1987-02-02T16:10:44.40 10.0 undecidable manual PN 316 0.0763 -2.13 0.1
--.CKI.Z. 1987-02-02T16:10:44.00 10.0 undecidable manual PN 326 0.0746 0.07 1
--.ROB.Z. 1987-02-02T16:10:44.50 10.0 undecidable manual PN 324 0.0754 -0.71 0.7
--.SBF.Z. 1987-02-02T16:10:43.30 10.0 undecidable manual PN 320 0.0745 -0.37 0.9
--.CO9.Z. 1987-02-02T16:10:42.50 10.0 undecidable manual PN 332 0.0729 1.16 0.4
--.IMP.Z. 1987-02-02T16:10:41.00 10.0 undecidable manual PN 322 0.0728 -0.1 1
--.VBY.Z. 1987-02-02T16:10:38.10 10.0 undecidable manual PN 2 0.0703 0.83 0.7
--.BDI.Z. 1987-02-02T16:10:28.50 10.0 positive manual PN 335 0.0638 1.14 1
--.ATH.Z. 1987-02-02T16:10:27.50 10.0 undecidable manual PN 84 0.0638 0.18 1
--.VAY.Z. 1987-02-02T16:10:25.70 10.0 undecidable manual PN 56 0.0633 -0.96 0.6
--.SAR.Z. 1987-02-02T16:10:23.80 10.0 undecidable manual PN 23 0.0610 0.78 0.7
--.SKO.Z. 1987-02-02T16:10:22.00 10.0 undecidable manual PN 48 0.0601 0.21 1.1
--.PLE.Z. 1987-02-02T16:10:22.00 10.0 undecidable manual PN 30 0.0598 0.71 0.8
--.BRT.Z. 1987-02-02T16:10:22.50 10.0 undecidable manual SN 29 0.0331 0.36 0.7
--.CVF.Z. 1987-02-02T16:10:20.80 10.0 undecidable manual PN 319 0.0595 -0.1 1.1
--.IVA.Z. 1987-02-02T16:10:19.60 10.0 undecidable manual PN 35 0.0584 0.39 1
--.CRE.Z. 1987-02-02T16:10:18.00 10.0 undecidable manual PN 341 0.0565 1.68 0.2
--.KZN.Z. 1987-02-02T16:10:14.00 10.0 undecidable manual PN 62 0.0544 0.92 0.7
--.BCR.Z. 1987-02-02T16:10:14.80 10.0 undecidable manual PN 39 0.0557 -0.29 1.1
--.ARV.Z. 1987-02-02T16:10:13.50 10.0 negative manual PN 347 0.0536 1.7 0.4
--.NKY.Z. 1987-02-02T16:10:12.50 10.0 undecidable manual PN 30 0.0545 -0.68 0.9
--.PHP.Z. 1987-02-02T16:10:11.60 10.0 undecidable manual PN 45 0.0533 0.21 1.1
--.AM8.Z. 1987-02-02T16:10:10.51 10.0 undecidable manual PN 351 0.0532 -0.67 0.9
--.BRY.Z. 1987-02-02T16:10:10.50 10.0 undecidable manual PN 27 0.0536 -1.27 0.4
--.TTG.Z. 1987-02-02T16:10:09.50 10.0 undecidable manual PN 34 0.0527 -0.96 0.7
--.OHR.Z. 1987-02-02T16:10:08.70 10.0 undecidable manual PN 51 0.0520 -0.82 0.8
--.ASS.Z. 1987-02-02T16:10:07.50 10.0 undecidable manual PN 344 0.0503 0.7 0.9
--.HCY.Z. 1987-02-02T16:10:05.00 10.0 undecidable manual PN 29 0.0499 -1.21 0.5
--.KBN.Z. 1987-02-02T16:10:05.00 10.0 undecidable manual PN 56 0.0496 -0.79 0.8
--.ULC.Z. 1987-02-02T16:10:04.00 10.0 undecidable manual PN 37 0.0494 -1.41 0.4
--.MAO.Z. 1987-02-02T16:10:04.00 10.0 undecidable manual PN 330 0.0491 -0.94 0.7
--.TIR.Z. 1987-02-02T16:10:03.50 10.0 negative manual PN 45 0.0483 -0.33 2.3
--.ALP.Z. 1987-02-02T16:10:02.43 10.0 undecidable manual PN 350 0.0464 1.59 0.3
--.AQU.Z. 1987-02-02T16:09:56.00 10.0 negative manual PN 347 0.0428 0.55 2.1
--.SRN.Z. 1987-02-02T16:09:54.90 10.0 undecidable manual PN 60 0.0418 1.15 0.6
--.VLS.Z. 1987-02-02T16:09:52.00 10.0 undecidable manual PN 82 0.0417 -1.65 0.2
--.RMP.Z. 1987-02-02T16:09:50.00 10.0 undecidable manual PN 339 0.0396 -0.43 1.1
--.SD1.Z. 1987-02-02T16:09:45.00 10.0 positive manual PN 350 0.0366 -0.94 1.5
--.DUI.Z. 1987-02-02T16:09:45.00 10.0 negative manual PN 356 0.0356 0.54 2.1
--.BRT.Z. 1987-02-02T16:09:39.50 10.0 undecidable manual PN 29 0.0331 -1.05 0.6
--.SGG.Z. 1987-02-02T16:09:39.80 10.0 undecidable manual PN 355 0.0333 -0.99 0.7
--.MSC.Z. 1987-02-02T16:09:38.60 10.0 undecidable manual PN 350 0.0318 -0.05 1.3
--.TR9.Z. 1987-02-02T16:09:37.00 10.0 positive manual PN 6 0.0303 0.73 1.8
--.ERC.Z. 1987-02-02T16:09:37.50 10.0 undecidable manual SN 281 0.0155 1.68 0.1
--.OVO.Z. 1987-02-02T16:09:33.00 10.0 undecidable manual PN 355 0.0282 -0.12 1.3
--.SGO.Z. 1987-02-02T16:09:29.00 10.0 undecidable manual PN 8 0.0260 -0.76 0.9
--.ORI.Z. 1987-02-02T16:09:27.50 10.0 positive manual PN 28 0.0243 0.41 2.3
--.SO9.Z. 1987-02-02T16:09:23.00 10.0 undecidable manual SN 69 0.0099 2.16 0
--.TS9.Z. 1987-02-02T16:09:20.50 10.0 negative manual PN 31 0.0209 -1.42 0.7
--.FAI.Z. 1987-02-02T16:09:15.50 10.0 undecidable manual SG 243 0.0085 -0.94 0.4
--.ERC.Z. 1987-02-02T16:09:14.00 10.0 undecidable manual PN 281 0.0155 0.18 1.2
--.GR9.Z. 1987-02-02T16:09:13.50 10.0 negative manual PN 49 0.0155 -0.35 2.4
--.CV9.Z. 1987-02-02T16:09:11.00 10.0 positive manual PN 269 0.0138 -0.19 2.5
--.AT9.Z. 1987-02-02T16:09:10.50 10.0 undecidable manual SG 50 0.0066 1.05 0.3
--.SO9.Z. 1987-02-02T16:09:05.00 10.0 positive manual PN 69 0.0099 -0.16 2.5
--.GIB.Z. 1987-02-02T16:09:04.50 10.0 undecidable manual SG 297 0.0057 -1.82 0.1
--.FAI.Z. 1987-02-02T16:09:03.50 10.0 positive manual PG 243 0.0085 0.88 1.6
--.MSI.Z. 1987-02-02T16:09:00.50 10.0 negative manual PG 51 0.0073 0.34 2.4
--.AT9.Z. 1987-02-02T16:08:58.50 10.0 positive manual PG 50 0.0066 -0.09 2.5
--.ML9.Z. 1987-02-02T16:08:57.20 10.0 negative manual PG 165 0.0054 0.97 1.4
--.GIB.Z. 1987-02-02T16:08:55.50 10.0 positive manual PG 297 0.0057 -1.28 0.9
--.MS9.Z. 1987-02-02T16:08:54.00 10.0 undecidable manual SG 351 0.0021 0.68 0.6
--.MS9.Z. 1987-02-02T16:08:49.90 10.0 positive manual PG 351 0.0021 0.63 2
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, http://terremoti.ingv.it/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