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) 37.7, 14.74 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
CesarĂ² 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
PaternĂ² 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
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 Md 4.1 1987-02-02
16:08:43
37.7 14.74 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 37.70 ± 0.02
Longitude 14.74 ± 0.02
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) 0.0021
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 0.081 -0.2 0.9
--.RBL.Z. 1987-02-02T16:10:52.50 10.0 undecidable manual PN 354 0.079 1.92 0.1
--.MDI.Z. 1987-02-02T16:10:52.50 10.0 undecidable manual PN 336 0.0801 0.25 0.9
--.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
--.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
--.FRF.Z. 1987-02-02T16:10:44.40 10.0 undecidable manual PN 316 0.0763 -2.13 0.1
--.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 0.061 0.78 0.7
--.BRT.Z. 1987-02-02T16:10:22.50 10.0 undecidable manual SN 29 0.0331 0.36 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
--.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
--.BCR.Z. 1987-02-02T16:10:14.80 10.0 undecidable manual PN 39 0.0557 -0.29 1.1
--.KZN.Z. 1987-02-02T16:10:14.00 10.0 undecidable manual PN 62 0.0544 0.92 0.7
--.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
--.BRY.Z. 1987-02-02T16:10:10.50 10.0 undecidable manual PN 27 0.0536 -1.27 0.4
--.AM8.Z. 1987-02-02T16:10:10.51 10.0 undecidable manual PN 351 0.0532 -0.67 0.9
--.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 0.052 -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
--.MAO.Z. 1987-02-02T16:10:04.00 10.0 undecidable manual PN 330 0.0491 -0.94 0.7
--.ULC.Z. 1987-02-02T16:10:04.00 10.0 undecidable manual PN 37 0.0494 -1.41 0.4
--.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
--.DUI.Z. 1987-02-02T16:09:45.00 10.0 negative manual PN 356 0.0356 0.54 2.1
--.SD1.Z. 1987-02-02T16:09:45.00 10.0 positive manual PN 350 0.0366 -0.94 1.5
--.SGG.Z. 1987-02-02T16:09:39.80 10.0 undecidable manual PN 355 0.0333 -0.99 0.7
--.BRT.Z. 1987-02-02T16:09:39.50 10.0 undecidable manual PN 29 0.0331 -1.05 0.6
--.MSC.Z. 1987-02-02T16:09:38.60 10.0 undecidable manual PN 350 0.0318 -0.05 1.3
--.ERC.Z. 1987-02-02T16:09:37.50 10.0 undecidable manual SN 281 0.0155 1.68 0.1
--.TR9.Z. 1987-02-02T16:09:37.00 10.0 positive manual PN 6 0.0303 0.73 1.8
--.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 0.026 -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
Focal Mechanism in the area
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