Earthquake with magnitude of M 5.1 on date 21-04-1991 and time 10:51:55 (Italy) in region Mar Ionio Meridionale (MARE)

A magnitude M 5.1 earthquake occured in region: Mar Ionio Meridionale (MARE), on

  • 21-04-1991 08:51:55 (UTC)
  • 21-04-1991 10:51:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.95, 19.95 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

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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 M 5.1 1991-04-21
08:51:55
37.95 19.95 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 139749
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-04-21 08:51:55 ± 0.193
Latitude 37.95 ± 0.02
Longitude 19.95 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 139749

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) 2199.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
Number of associated phases, regardless of their use for origin computation 117
Number of defining phases 117
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.02024
Epicentral distance of station farthest from the epicenter (degree) 0.15445
Number of stations at which the event was observed 100
Number of stations from which data was used for origin computation 100
Magnitude information

M:5.1

Field Value
Value 5.1
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 139749
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:16:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.PZI.Z. 1991-04-21T08:56:55.00 10.0 undecidable manual U
--.MFF.Z. 1991-04-21T08:55:55.50 10.0 undecidable manual P 307 0.1544 -1.75 0.1
--.VOY.Z. 1991-04-21T08:55:46.30 10.0 undecidable manual SN 333 0.0831 0.46 0.4
--.LFF.Z. 1991-04-21T08:55:40.50 10.0 undecidable manual P 302 0.1438 -0.4 0.7
--.MAF.Z. 1991-04-21T08:55:30.90 10.0 undecidable manual P 309 0.1377 -0.73 0.6
--.SSF.Z. 1991-04-21T08:55:30.40 10.0 undecidable manual P 313 0.1362 0.93 0.4
--.LOR.Z. 1991-04-21T08:55:29.10 10.0 undecidable manual P 314 0.1354 0.93 0.4
--.HAU.Z. 1991-04-21T08:55:14.90 10.0 undecidable manual PN 320 0.1272 -0.69 0.6
--.MOX.Z. 1991-04-21T08:55:13.20 10.0 undecidable manual PN 338 0.1261 -0.81 0.5
--.CDF.Z. 1991-04-21T08:55:12.20 10.0 undecidable manual PN 323 0.1255 -0.84 0.5
--.BSF.Z. 1991-04-21T08:55:09.90 10.0 undecidable manual PN 320 0.1241 -1.01 0.4
--.FEL.Z. 1991-04-21T08:55:02.19 10.0 undecidable manual PN 323 0.1189 -0.79 0.6
--.GRF.Z. 1991-04-21T08:55:02.80 10.0 undecidable manual PN 335 0.1198 -1.56 0.2
--.SLE.Z. 1991-04-21T08:54:59.80 10.0 undecidable manual PN 323 0.1162 1.02 0.4
--.PRU.Z. 1991-04-21T08:54:54.00 10.0 undecidable manual PN 344 0.1137 -1.16 0.4
--.DIX.Z. 1991-04-21T08:54:54.10 10.0 undecidable manual PN! 315 0.1111 2.92 0
--.LLS.Z. 1991-04-21T08:54:47.90 10.0 undecidable manual PN 322 0.1081 1.44 0.2
--.FUR.Z. 1991-04-21T08:54:46.90 10.0 undecidable manual PN 331 0.1081 0.39 0.8
--.KRA.Z. 1991-04-21T08:54:46.90 10.0 undecidable manual PN 0 0.1089 -0.76 0.6
--.KHC.Z. 1991-04-21T08:54:46.00 10.0 undecidable manual PN 340 0.1088 -1.56 0.4
--.VDL.Z. 1991-04-21T08:54:40.80 10.0 undecidable manual PN 321 0.1037 0.95 0.5
--.OSS.Z. 1991-04-21T08:54:39.10 10.0 undecidable manual PN 324 0.1021 1.76 0.1
--.SPC.Z. 1991-04-21T08:54:36.10 10.0 undecidable manual PN 1 0.101 0.31 0.9
--.BHG.Z. 1991-04-21T08:54:35.30 10.0 positive manual PN! 335 0.0995 1.95 0
--.KMR.Z. 1991-04-21T08:54:32.20 10.0 undecidable manual PN 339 0.0986 0.17 1.9
--.BOB.Z. 1991-04-21T08:54:25.25 10.0 undecidable manual PN 314 0.0937 0.7 0.7
--.ZST.Z. 1991-04-21T08:54:25.20 10.0 undecidable manual PN 349 0.0933 1.18 0.4
--.SAL.Z. 1991-04-21T08:54:24.00 10.0 undecidable manual PN 321 0.0934 -0.17 1
--.KBA.Z. 1991-04-21T08:54:23.00 10.0 undecidable manual PN 334 0.093 -0.53 0.8
--.CTI.Z. 1991-04-21T08:54:20.49 10.0 undecidable manual PN 326 0.0916 -0.75 0.7
--.FVI.Z. 1991-04-21T08:54:19.94 10.0 undecidable manual PN 331 0.0911 -0.79 0.7
--.PLE.Z. 1991-04-21T08:54:17.30 10.0 undecidable manual SN! 356 0.0485 2.82 0
--.SRO.Z. 1991-04-21T08:54:16.60 10.0 undecidable manual PN 354 0.0894 -1.3 0.3
--.BUD.Z. 1991-04-21T08:54:13.00 10.0 undecidable manual PN 356 0.0859 0.29 2
--.VRI.Z. 1991-04-21T08:54:13.50 10.0 undecidable manual PN! 30 0.0843 3.15 0
--.MME.Z. 1991-04-21T08:54:09.00 10.0 undecidable manual PN 315 0.0841 -0.99 0.6
--.VOY.Z. 1991-04-21T08:54:07.90 10.0 undecidable manual PN 333 0.0831 -0.61 0.8
--.BRY.Z. 1991-04-21T08:54:06.35 10.0 undecidable manual SN 348 0.0455 0 0.8
--.IVA.Z. 1991-04-21T08:54:06.95 10.0 undecidable manual SN! 359 0.0442 4.01 0
--.TRI.Z. 1991-04-21T08:54:05.52 10.0 undecidable manual PN 331 0.0811 0.11 1.1
--.NKY.Z. 1991-04-21T08:54:04.38 10.0 undecidable manual SN! 352 0.0442 1.57 0
--.MLR.Z. 1991-04-21T08:54:02.00 10.0 positive manual PN 29 0.0788 0.15 2.2
--.SFI.Z. 1991-04-21T08:54:00.58 10.0 undecidable manual PN 317 0.0767 1.84 0.1
--.PGD.Z. 1991-04-21T08:54:00.50 10.0 undecidable manual PN 316 0.0772 0.63 0.9
--.PVY.Z. 1991-04-21T08:53:59.40 10.0 undecidable manual SN! 0 0.0417 3.04 0
--.RIY.Z. 1991-04-21T08:53:57.80 10.0 undecidable manual PN 332 0.0763 -0.15 1.1
--.CRE.Z. 1991-04-21T08:53:57.56 10.0 undecidable manual PN! 316 0.0746 2.16 0
--.HCY.Z. 1991-04-21T08:53:56.18 10.0 undecidable manual SN 347 0.0416 0.12 0.8
--.PTJ.Z. 1991-04-21T08:53:56.70 10.0 positive manual PN 341 0.0763 -1.38 0.6
--.TTG.Z. 1991-04-21T08:53:55.38 10.0 undecidable manual SN! 353 0.0406 2.22 0
--.VBY.Z. 1991-04-21T08:53:55.60 10.0 undecidable manual PN 337 0.0749 -0.23 1.1
--.RSM.Z. 1991-04-21T08:53:55.38 10.0 undecidable manual PN 319 0.0741 0.8 0.8
--.BDV.Z. 1991-04-21T08:53:52.35 10.0 undecidable manual SN 349 0.0397 1.39 0.2
--.ARV.Z. 1991-04-21T08:53:47.70 10.0 positive manual PN 319 0.069 0.75 1.7
--.ULC.Z. 1991-04-21T08:53:44.13 10.0 undecidable manual SN! 353 0.0363 1.93 0
--.MEU.Z. 1991-04-21T08:53:43.62 10.0 undecidable manual SN! 260 0.0372 -0.91 0
--.PZI.Z. 1991-04-21T08:53:43.25 10.0 undecidable manual SN 259 0.0366 0.55 0.4
--.MNS.Z. 1991-04-21T08:53:39.72 10.0 undecidable manual PN 311 0.0639 0.63 1
--.BRT.Z. 1991-04-21T08:53:36.00 10.0 undecidable manual SN! 324 0.0327 3.57 0
--.AU9.Z. 1991-04-21T08:53:35.80 10.0 undecidable manual SN 261 0.0342 -0.76 0.3
--.PVL.Z. 1991-04-21T08:53:32.00 10.0 positive manual PN 36 0.0588 0.73 1.8
--.AZI.Z. 1991-04-21T08:53:29.20 10.0 undecidable manual PN 311 0.0577 -0.46 1.1
--.TDS.Z. 1991-04-21T08:53:27.00 10.0 undecidable manual SN! 302 0.0295 2.74 0
--.RFI.Z. 1991-04-21T08:53:21.60 10.0 undecidable manual PN 308 0.0511 1.47 0.3
--.IZM.Z. 1991-04-21T08:53:20.40 10.0 undecidable manual PN 83 0.0518 -0.29 1.2
--.DUI.Z. 1991-04-21T08:53:19.85 10.0 undecidable manual PN 313 0.0505 1.2 0.5
--.GRI.Z. 1991-04-21T08:53:17.50 10.0 undecidable manual SN! 288 0.0261 2.56 0
--.NPS.Z. 1991-04-21T08:53:15.00 10.0 undecidable manual PN 119 0.0474 0.94 0.7
--.PLE.Z. 1991-04-21T08:53:15.55 10.0 negative manual PN 356 0.0485 -0.06 2.5
--.USI.Z. 1991-04-21T08:53:14.18 10.0 undecidable manual PN 280 0.0482 -0.99 0.7
--.RDO.Z. 1991-04-21T08:53:14.50 10.0 undecidable manual PN 52 0.0482 -0.68 0.9
--.PRK.Z. 1991-04-21T08:53:12.50 10.0 undecidable manual PN 73 0.0459 0.84 0.8
--.FAI.Z. 1991-04-21T08:53:10.85 10.0 negative manual PN 264 0.0451 0.38 2.3
--.IVA.Z. 1991-04-21T08:53:09.68 10.0 positive manual PN 359 0.0442 0.58 2
--.BRY.Z. 1991-04-21T08:53:09.98 10.0 negative manual PN 348 0.0455 -1.08 1.2
--.MCT.Z. 1991-04-21T08:53:09.31 10.0 undecidable manual PN 268 0.0451 -1.17 0.5
--.NKY.Z. 1991-04-21T08:53:08.45 10.0 negative manual PN 352 0.0442 -0.58 2
--.FG4.Z. 1991-04-21T08:53:07.44 10.0 undecidable manual PN 314 0.0419 1.79 0.1
--.GIB.Z. 1991-04-21T08:53:06.29 10.0 undecidable manual PN 272 0.0419 0.65 1
--.PVY.Z. 1991-04-21T08:53:05.81 10.0 positive manual PN 0 0.0417 0.51 2.1
--.HCY.Z. 1991-04-21T08:53:03.91 10.0 negative manual PN 347 0.0416 -1.21 0.9
--.TTG.Z. 1991-04-21T08:53:02.85 10.0 negative manual PN 353 0.0406 -0.6 2
--.BCI.Z. 1991-04-21T08:53:02.30 10.0 negative manual PN 1 0.0397 0.13 2.5
--.BDV.Z. 1991-04-21T08:53:01.10 10.0 negative manual PN 349 0.0397 -1.17 1
--.CDT.Z. 1991-04-21T08:52:59.00 10.0 undecidable manual PN 319 0.038 -0.54 1
--.KKS.Z. 1991-04-21T08:52:59.40 10.0 undecidable manual PN 5 0.0372 1.02 0.6
--.MNO.Z. 1991-04-21T08:52:58.86 10.0 positive manual PN 271 0.0372 0.42 2.3
--.SA1.Z. 1991-04-21T08:52:57.14 10.0 undecidable manual PN 280 0.0365 -0.2 1.2
--.ULC.Z. 1991-04-21T08:52:56.35 10.0 negative manual PN 353 0.0363 -0.77 1.7
--.MEU.Z. 1991-04-21T08:52:56.39 10.0 negative manual PN 260 0.0372 -2.08 0.1
--.BAI.Z. 1991-04-21T08:52:56.00 10.0 undecidable manual PN 324 0.0355 0.28 1.2
--.PZI.Z. 1991-04-21T08:52:55.47 10.0 undecidable manual PN 259 0.0366 -1.94 0.1
--.PHP.Z. 1991-04-21T08:52:53.10 10.0 positive manual PN 6 0.0338 -0.02 2.5
--.AU9.Z. 1991-04-21T08:52:51.80 10.0 positive manual PN! 261 0.0342 -2.07 0
--.BRT.Z. 1991-04-21T08:52:51.45 10.0 undecidable manual PN 324 0.0327 -0.04 1.3
--.ATN.Z. 1991-04-21T08:52:50.16 10.0 undecidable manual PN 275 0.0318 0.02 1.3
--.PE1.Z. 1991-04-21T08:52:49.00 10.0 undecidable manual PN 326 0.0311 -0.03 1.3
--.CSI.Z. 1991-04-21T08:52:49.85 10.0 undecidable manual PN 304 0.0304 1.81 0.1
--.MSI.Z. 1991-04-21T08:52:48.60 10.0 undecidable manual PN 275 0.0312 -0.57 1
--.TIR.Z. 1991-04-21T08:52:48.60 10.0 positive manual PN 359 0.0305 0.41 2.3
--.MO9.Z. 1991-04-21T08:52:47.38 10.0 undecidable manual PN 272 0.0301 -0.24 1.2
--.SC9.Z. 1991-04-21T08:52:47.25 10.0 undecidable manual PN 276 0.03 -0.24 1.2
--.TDS.Z. 1991-04-21T08:52:47.00 10.0 undecidable manual PN 302 0.0295 0.23 1.2
--.ACI.Z. 1991-04-21T08:52:47.50 10.0 undecidable manual PN 297 0.0291 0.96 0.7
--.CZI.Z. 1991-04-21T08:52:46.96 10.0 undecidable manual PN 294 0.0291 0.91 1.5
--.GA2.Z. 1991-04-21T08:52:46.18 10.0 undecidable manual PN 275 0.0292 -0.02 2.5
--.DR2.Z. 1991-04-21T08:52:45.92 10.0 undecidable manual PN 284 0.029 0.04 2.5
--.ROI.Z. 1991-04-21T08:52:44.45 10.0 undecidable manual PN 303 0.0278 0.39 2.3
--.FE2.Z. 1991-04-21T08:52:43.83 10.0 undecidable manual PN 273 0.0274 0.46 2.2
--.ATH.Z. 1991-04-21T08:52:42.00 10.0 undecidable manual PN 88 0.0267 -0.35 1.2
--.GRI.Z. 1991-04-21T08:52:41.44 10.0 undecidable manual PN 288 0.0261 0.06 1.3
--.RI2.Z. 1991-04-21T08:52:40.40 10.0 undecidable manual PN 281 0.0249 0.89 1.5
--.KZN.Z. 1991-04-21T08:52:40.00 10.0 undecidable manual PN 30 0.0247 0.73 0.9
--.KBN.Z. 1991-04-21T08:52:39.40 10.0 positive manual PN 13 0.0247 0.1 2.5
--.SE2.Z. 1991-04-21T08:52:39.92 10.0 undecidable manual PN 294 0.0246 0.75 1.7
--.VLI.Z. 1991-04-21T08:52:38.20 10.0 undecidable manual PN 116 0.024 -0.16 1.2
--.LSK.Z. 1991-04-21T08:52:33.60 10.0 positive manual PN 13 0.0202 1.06 1.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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