Earthquake with magnitude of Md 3.2 on date 29-12-1987 and time 14:12:53 (Italy) in region 5 km W Spoleto (PG)

A magnitude Md 3.2 earthquake occured in region: 5 km W Spoleto (PG), on

  • 29-12-1987 13:12:53 (UTC)
  • 29-12-1987 14:12:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.75, 12.69 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
Spoleto PG 5 38218 38218
Castel Ritaldi PG 8 3278 41496
Campello sul Clitunno PG 11 2442 43938
Sant'Anatolia di Narco PG 13 564 44502
Giano dell'Umbria PG 13 3846 48348
Scheggino PG 13 461 48809
Acquasparta TR 13 4778 53587
Massa Martana PG 14 3770 57357
Vallo di Nera PG 15 364 57721
Trevi PG 15 8469 66190
Montefalco PG 16 5679 71869
Ferentillo TR 17 1913 73782
Montefranco TR 19 1276 75058
San Gemini TR 19 5018 80076
Montecastrilli TR 20 5022 85098
Arrone TR 20 2763 87861

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km N of Terni (111501 inhabitants)
23 Km S of Foligno (57155 inhabitants)
46 Km SE of Perugia (166134 inhabitants)
60 Km NE of Viterbo (67173 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
84 Km N of Guidonia Montecelio (88673 inhabitants)
84 Km W of Teramo (54892 inhabitants)
88 Km N of Tivoli (56533 inhabitants)
97 Km N of Roma (2864731 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
Bulletin
Rev1000
Md 3.2
ML-VAX 3.1
1987-12-29
13:12:53
42.75 12.69 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 60109
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-12-29 13:12:53 ± 0.179
Latitude 42.75 ± 0.01
Longitude 12.69 ± 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 60109

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) 2122.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 48
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) 0.00275
Epicentral distance of station farthest from the epicenter (degree) 0.06192
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 36
Magnitudes information

Md:3.2

Field Value
Value 3.2
Uncertainty
Num. used stations 16
Type of magnitude Md
Reference to an origin 60109
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:57:23

ML:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 11
Type of magnitude ML
Reference to an origin 60109
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
--.CDF.Z. 1987-12-29T13:15:46.40 10.0 undecidable manual SN 328 0.0612 0.45 0.3
--.BSF.Z. 1987-12-29T13:15:41.00 10.0 undecidable manual SN 322 0.0589 1.05 0.2
--.VAI.Z. 1987-12-29T13:14:44.87 10.0 undecidable manual SN 319 0.0376 1.17 0.2
--.HAU.Z. 1987-12-29T13:14:34.41 10.0 undecidable manual PN 321 0.0619 0.22 0.9
--.MDI.Z. 1987-12-29T13:14:32.18 10.0 undecidable manual SN 325 0.0333 0.1 0.6
--.CDF.Z. 1987-12-29T13:14:32.80 10.0 undecidable manual PN 328 0.0612 -0.35 0.9
--.CKI.Z. 1987-12-29T13:14:31.70 10.0 undecidable manual SN 299 0.0324 1.32 0.2
--.BSF.Z. 1987-12-29T13:14:30.00 10.0 undecidable manual PN 322 0.0589 0.32 0.9
--.KHC.Z. 1987-12-29T13:14:27.91 10.0 undecidable manual PN 5 0.0576 0.25 1
--.CTI.Z. 1987-12-29T13:14:24.96 10.0 undecidable manual SN 347 0.0304 0.54 0.5
--.LPL.Z. 1987-12-29T13:14:09.50 10.0 undecidable manual PN 304 0.0457 -0.05 1.2
--.LPG.Z. 1987-12-29T13:14:09.20 10.0 undecidable manual PN 304 0.0456 -0.06 1.2
--.LRG.Z. 1987-12-29T13:14:02.80 10.0 undecidable manual PN 280 0.042 -1.02 0.6
--.KBA.Z. 1987-12-29T13:14:00.20 10.0 negative manual PN 5 0.0391 0.77 1.7
--.VDL.Z. 1987-12-29T13:14:00.59 10.0 undecidable manual PN 329 0.0393 0.77 0.9
--.LMR.Z. 1987-12-29T13:14:00.59 10.0 undecidable manual PN 279 0.0409 -1.58 0.2
--.VAI.Z. 1987-12-29T13:13:59.12 10.0 undecidable manual PN 319 0.0376 1.91 0.1
--.TMA.Z. 1987-12-29T13:13:59.20 10.0 undecidable manual PN 322 0.0389 0.2 1.3
--.FVI.Z. 1987-12-29T13:13:53.13 10.0 undecidable manual PN 0 0.0345 0.68 1
--.SBF.Z. 1987-12-29T13:13:52.70 10.0 undecidable manual PN 287 0.0358 -1.63 0.2
--.RBL.Z. 1987-12-29T13:13:51.00 10.0 undecidable manual PN 9 0.0336 -0.07 1.4
--.CKI.Z. 1987-12-29T13:13:50.64 10.0 undecidable manual PN 299 0.0324 1.49 0.3
--.MDI.Z. 1987-12-29T13:13:50.41 10.0 undecidable manual PN 325 0.0333 -0.09 1.4
--.CTI.Z. 1987-12-29T13:13:45.61 10.0 undecidable manual PN 347 0.0304 -0.46 1.3
--.SAL.Z. 1987-12-29T13:13:44.50 10.0 undecidable manual PN 332 0.0291 0.2 1.5
--.BOB.Z. 1987-12-29T13:13:42.76 10.0 undecidable manual PN 311 0.0278 0.67 1.1
--.TRI.Z. 1987-12-29T13:13:41.19 10.0 positive manual PN 14 0.0274 -0.47 2.7
--.CVF.Z. 1987-12-29T13:13:36.59 10.0 undecidable manual PN 267 0.0253 -1.74 0.2
--.PGD.Z. 1987-12-29T13:13:35.00 10.0 undecidable manual SN 328 0.0119 -0.64 0.5
--.BDI.Z. 1987-12-29T13:13:28.00 10.0 undecidable manual PN 311 0.018 0.75 1.1
--.RMP.Z. 1987-12-29T13:13:27.93 10.0 undecidable manual SG 179 0.0084 2.12 0
--.MME.Z. 1987-12-29T13:13:27.55 10.0 undecidable manual PN 315 0.0183 -0.15 1.5
--.FIR.Z. 1987-12-29T13:13:21.00 10.0 undecidable manual PN 314 0.0131 1.24 0.6
--.MC8.Z. 1987-12-29T13:13:21.63 10.0 undecidable manual SG 44 0.0068 1.59 0.2
--.ARV.Z. 1987-12-29T13:13:20.40 10.0 undecidable manual SG 14 0.0069 -0.25 0.6
--.SDI.Z. 1987-12-29T13:13:19.50 10.0 undecidable manual PN 141 0.012 1.45 0.4
--.PGD.Z. 1987-12-29T13:13:17.26 10.0 undecidable manual PN 328 0.0119 -0.64 1.2
--.AM8.Z. 1987-12-29T13:13:13.31 10.0 negative manual PN 39 0.0093 -0.69 2.3
--.RMP.Z. 1987-12-29T13:13:12.00 10.0 undecidable manual PG 179 0.0084 -0.23 1.5
--.ARV.Z. 1987-12-29T13:13:09.50 10.0 undecidable manual PG 14 0.0069 0.45 1.4
--.MC8.Z. 1987-12-29T13:13:08.90 10.0 negative manual PG 44 0.0068 0 3.1
--.AQU.Z. 1987-12-29T13:13:07.32 10.0 undecidable manual PG 126 0.0059 0.29 1.5
--.MNS.Z. 1987-12-29T13:13:07.50 10.0 undecidable manual SG 180 0.0032 0.09 0.6
--.ALP.Z. 1987-12-29T13:13:06.61 10.0 negative manual PG 87 0.0057 -0.17 3.1
--.CM8.Z. 1987-12-29T13:13:04.38 10.0 negative manual PG 36 0.0049 -0.69 2.3
--.ASS.Z. 1987-12-29T13:13:04.00 10.0 undecidable manual SG 355 0.0028 -1.57 0.1
--.MNS.Z. 1987-12-29T13:13:00.50 10.0 undecidable manual PG 180 0.0032 -1.11 0.7
--.ASS.Z. 1987-12-29T13:12:59.50 10.0 negative manual PG 355 0.0028 -1.05 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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