Earthquake with magnitude of Md 3.1 on date 29-11-1987 and time 02:22:23 (UTC) in region Costa Marchigiana Anconetana (Ancona)

A magnitude Md 3.1 earthquake occured in region: Costa Marchigiana Anconetana (Ancona), on

  • 29-11-1987 02:22:23 (UTC)
  • 29-11-1987 03:22:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.5, 13.65 at 24 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
Numana AN 3 3775 3775
Sirolo AN 4 4051 7826
Loreto AN 8 12814 20640
Porto Recanati MC 8 12531 33171
Camerano AN 9 7322 40493
Castelfidardo AN 10 18733 59226
Recanati MC 14 21349 80575
Osimo AN 14 34977 115552
Potenza Picena MC 15 15936 131488
Ancona AN 17 100861 232349
Offagna AN 17 1935 234284
Montelupone MC 19 3596 237880
Montefano MC 20 3541 241421

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SE of Ancona (100861 inhabitants)
64 Km SE of Fano (60888 inhabitants)
75 Km SE of Pesaro (94582 inhabitants)
94 Km N of Teramo (54892 inhabitants)
98 Km NE of Foligno (57155 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 3.1
ML-VAX 2.7
1987-11-29
02:22:23
43.5 13.65 24 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 58979
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-11-29 02:22:23 ± 0.214
Latitude 43.50 ± 0.01
Longitude 13.65 ± 0.03
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 58979

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) 2439.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
Number of associated phases, regardless of their use for origin computation 61
Number of defining phases 61
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) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.05432
Number of stations at which the event was observed 50
Number of stations from which data was used for origin computation 50
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 16
Type of magnitude Md
Reference to an origin 58979
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:56:23

ML:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 8
Type of magnitude ML
Reference to an origin 58979
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.LRG.Z. 1987-11-29T02:24:38.60 10.0 undecidable manual SN 271 0.0475 1.7 0.1
--.LMR.Z. 1987-11-29T02:24:35.39 10.0 undecidable manual SN 270 0.0466 0.87 0.3
--.FRF.Z. 1987-11-29T02:24:32.50 10.0 undecidable manual SN 273 0.0457 0.64 0.4
--.SBF.Z. 1987-11-29T02:24:17.50 10.0 undecidable manual SN 276 0.0406 -0.85 0.3
--.STG.Z. 1987-11-29T02:23:50.60 10.0 undecidable manual PN 302 0.0543 -0.2 1.1
--.KHC.Z. 1987-11-29T02:23:44.40 10.0 undecidable manual PN 359 0.0506 -0.66 0.8
--.SLE.Z. 1987-11-29T02:23:43.80 10.0 undecidable manual PN 321 0.0502 -0.66 0.8
--.EMS.Z. 1987-11-29T02:23:43.20 10.0 undecidable manual PN 300 0.0486 1.03 0.5
--.LRG.Z. 1987-11-29T02:23:40.40 10.0 undecidable manual PN 271 0.0475 -0.05 1.2
--.LPG.Z. 1987-11-29T02:23:39.70 10.0 undecidable manual PN 294 0.0478 -1.01 0.6
--.LPL.Z. 1987-11-29T02:23:39.80 10.0 undecidable manual PN 294 0.0479 -1.17 0.4
--.FRF.Z. 1987-11-29T02:23:38.60 10.0 undecidable manual PN 273 0.0457 1.06 0.5
--.DIX.Z. 1987-11-29T02:23:38.60 10.0 undecidable manual PN 302 0.0461 0.44 1.1
--.LMR.Z. 1987-11-29T02:23:38.90 10.0 undecidable manual PN 270 0.0466 -0.17 1.2
--.SAX.Z. 1987-11-29T02:23:35.20 10.0 undecidable manual PN 322 0.0433 1.27 0.4
--.LLS.Z. 1987-11-29T02:23:33.40 10.0 undecidable manual PN 317 0.0421 1.33 0.4
--.MMK.Z. 1987-11-29T02:23:31.80 10.0 undecidable manual PN 304 0.0429 -1.55 0.2
--.ORO.Z. 1987-11-29T02:23:29.57 10.0 undecidable manual PN 299 0.041 -0.91 0.7
--.SBF.Z. 1987-11-29T02:23:29.70 10.0 undecidable manual PN 276 0.0406 -0.04 1.3
--.BHG.Z. 1987-11-29T02:23:27.00 10.0 positive manual PN 352 0.0382 0.81 1.7
--.VDL.Z. 1987-11-29T02:23:26.00 10.0 undecidable manual PN 316 0.0377 0.51 1.1
--.TMA.Z. 1987-11-29T02:23:25.80 10.0 undecidable manual PN 309 0.0384 -0.7 1
--.OSS.Z. 1987-11-29T02:23:24.50 10.0 undecidable manual PN 323 0.0363 1.31 0.4
--.VAI.Z. 1987-11-29T02:23:24.60 10.0 undecidable manual PN 305 0.0377 -0.86 0.8
--.CVF.Z. 1987-11-29T02:23:17.50 10.0 undecidable manual PN 256 0.0325 -0.02 1.5
--.KBA.Z. 1987-11-29T02:23:17.20 10.0 negative manual PN 356 0.0321 0.21 2.9
--.MDI.Z. 1987-11-29T02:23:16.67 10.0 undecidable manual PN 310 0.0325 -0.72 1
--.BOB.Z. 1987-11-29T02:23:14.41 10.0 undecidable manual PN 294 0.0294 1.66 0.2
--.FVI.Z. 1987-11-29T02:23:10.66 10.0 undecidable manual PN 348 0.0283 -0.42 1.4
--.SAL.Z. 1987-11-29T02:23:09.39 10.0 undecidable manual PN 314 0.0275 -0.51 1.3
--.PTJ.Z. 1987-11-29T02:23:09.30 10.0 undecidable manual PN 33 0.0261 1.44 0.4
--.RBL.Z. 1987-11-29T02:23:07.71 10.0 undecidable manual PN 358 0.0264 -0.45 1.4
--.CTI.Z. 1987-11-29T02:23:06.58 10.0 undecidable manual PN 331 0.0261 -1.26 0.5
--.RCL.Z. 1987-11-29T02:23:05.00 10.0 undecidable manual PN 345 0.0247 -0.57 1.3
--.BUA.Z. 1987-11-29T02:23:05.20 10.0 undecidable manual PN 352 0.0246 -0.25 1.6
--.LJU.Z. 1987-11-29T02:23:04.00 10.0 undecidable manual PN 13 0.0235 0.28 1.5
--.DRE.Z. 1987-11-29T02:23:03.80 10.0 undecidable manual PN 359 0.024 -0.68 1.2
--.CRE.Z. 1987-11-29T02:23:02.40 10.0 undecidable manual SN 275 0.0111 1.77 0.1
--.MNS.Z. 1987-11-29T02:23:02.44 10.0 undecidable manual SN 212 0.0119 -0.27 0.6
--.UDI.Z. 1987-11-29T02:23:02.50 10.0 undecidable manual PN 353 0.0232 -0.73 1.1
--.MME.Z. 1987-11-29T02:22:59.15 10.0 undecidable manual PN 288 0.0201 0.57 1.3
--.PII.Z. 1987-11-29T02:22:57.17 10.0 undecidable manual PN! 276 0.0204 -1.92 0
--.TRI.Z. 1987-11-29T02:22:56.38 10.0 undecidable manual PN 1 0.0198 -1.75 0.2
--.FIR.Z. 1987-11-29T02:22:53.00 10.0 undecidable manual PN 279 0.0158 1.04 0.7
--.RMP.Z. 1987-11-29T02:22:52.80 10.0 undecidable manual PN 202 0.0164 -0.2 1.6
--.ASS.Z. 1987-11-29T02:22:51.32 10.0 undecidable manual SN 239 0.0076 -0.12 0.6
--.CP9.Z. 1987-11-29T02:22:51.71 10.0 undecidable manual PN 197 0.0155 0.23 1.6
--.ALP.Z. 1987-11-29T02:22:49.40 10.0 undecidable manual SN 184 0.0065 0.59 0.8
--.PGD.Z. 1987-11-29T02:22:48.77 10.0 undecidable manual PN 285 0.013 1.08 0.7
--.MNS.Z. 1987-11-29T02:22:46.90 10.0 undecidable manual PN 212 0.0119 0.02 1.6
--.CRE.Z. 1987-11-29T02:22:45.25 10.0 undecidable manual PN 275 0.0111 0.39 1.5
--.AQU.Z. 1987-11-29T02:22:44.27 10.0 undecidable manual PN 189 0.0104 0.42 1.4
--.ARV.Z. 1987-11-29T02:22:41.11 10.0 undecidable manual SG 269 0.0046 -1.24 0.2
--.ASS.Z. 1987-11-29T02:22:38.87 10.0 undecidable manual PN 239 0.0076 -0.69 1.2
--.ALP.Z. 1987-11-29T02:22:37.23 10.0 positive manual PN 184 0.0065 -0.6 2.5
--.MC8.Z. 1987-11-29T02:22:35.60 10.0 undecidable manual SG 218 0.0024 -0.16 1
--.ARV.Z. 1987-11-29T02:22:33.40 10.0 undecidable manual PG 269 0.0046 -1.27 0.5
--.CM8.Z. 1987-11-29T02:22:33.12 10.0 positive manual PG 230 0.0043 -0.63 2.4
--.AM8.Z. 1987-11-29T02:22:31.45 10.0 undecidable manual SG 319 0.0005 0.47 0.8
--.MC8.Z. 1987-11-29T02:22:30.49 10.0 negative manual PG 218 0.0024 0.29 3.1
--.AM8.Z. 1987-11-29T02:22:28.59 10.0 undecidable manual PG 319 0.0005 0.85 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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