Earthquake with magnitude of Md 3.4 on date 30-05-1991 and time 00:12:32 (UTC) in region 4 km N Chiusdino (SI)

A magnitude Md 3.4 earthquake occured in region: 4 km N Chiusdino (SI), on

  • 30-05-1991 00:12:32 (UTC)
  • 30-05-1991 02:12:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2, 11.08 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
Chiusdino SI 4 1903 1903
Radicondoli SI 8 914 2817
Montieri GR 9 1204 4021
Monticiano SI 10 1571 5592
Castelnuovo di Val di Cecina PI 14 2231 7823
Sovicille SI 15 10116 17939
Casole d'Elsa SI 17 3897 21836
Monterotondo Marittimo GR 19 1371 23207

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SW of Siena (53903 inhabitants)
48 Km N of Grosseto (82087 inhabitants)
63 Km S of Scandicci (50609 inhabitants)
66 Km S of Firenze (382808 inhabitants)
71 Km W of Arezzo (99543 inhabitants)
74 Km SE of Livorno (159219 inhabitants)
76 Km S of Prato (191150 inhabitants)
80 Km SE of Pisa (89158 inhabitants)
83 Km S of Pistoia (90315 inhabitants)
86 Km SE of Lucca (89046 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 3.4
M 2.5
1991-05-30
00:12:32
43.2 11.08 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 142179
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-05-30 00:12:32 ± 0.999
Latitude 43.20 ± 0.02
Longitude 11.08 ± 0.02
Depth (km) 10 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 142179

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) 2713.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 70
Number of defining phases 70
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.9
Epicentral distance of station closest to the epicenter (degree) 0.00526
Epicentral distance of station farthest from the epicenter (degree) 0.06055
Number of stations at which the event was observed 55
Number of stations from which data was used for origin computation 55
Magnitudes information

Md:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 142179
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:12:44

M:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 142179
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:48:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BGF.Z. 1991-05-30T00:14:12.50 10.0 undecidable manual PN 302 0.0605 1.37 0.7
--.CAF.Z. 1991-05-30T00:14:10.60 10.0 undecidable manual PN 287 0.0603 -0.13 0.9
--.LOR.Z. 1991-05-30T00:14:08.70 10.0 undecidable manual PN 310 0.0586 0.57 1
--.LBF.Z. 1991-05-30T00:14:06.00 10.0 undecidable manual PN 309 0.0565 1.03 0.9
--.SMF.Z. 1991-05-30T00:14:05.20 10.0 undecidable manual PN 306 0.0555 1.69 0.6
--.LMR.Z. 1991-05-30T00:14:01.50 10.0 undecidable manual SN 273 0.03 -0.9 0.4
--.HAU.Z. 1991-05-30T00:14:00.10 10.0 undecidable manual PN 326 0.0525 1.24 0.9
--.CDF.Z. 1991-05-30T00:13:59.10 10.0 undecidable manual PN 334 0.0526 0.06 1.1
--.FRF.Z. 1991-05-30T00:13:59.00 10.0 undecidable manual SN 277 0.0291 -1.3 0.3
--.BSF.Z. 1991-05-30T00:13:56.30 10.0 undecidable manual PN 328 0.0497 1.75 0.7
--.SLE.Z. 1991-05-30T00:13:47.10 10.0 undecidable manual PN 338 0.0442 0.88 1.1
--.SBF.Z. 1991-05-30T00:13:45.40 10.0 undecidable manual SN 285 0.0245 -2.61 0.1
--.ZLA.Z. 1991-05-30T00:13:45.50 10.0 undecidable manual PN 336 0.0422 2.41 0.4
--.EMS.Z. 1991-05-30T00:13:38.40 10.0 undecidable manual PN 315 0.0371 3.1 0.2
--.KBA.Z. 1991-05-30T00:13:37.50 10.0 positive manual PN 21 0.0377 1.16 2.1
--.LLS.Z. 1991-05-30T00:13:36.00 10.0 undecidable manual PN 338 0.0354 3.24 0.1
--.DIX.Z. 1991-05-30T00:13:35.70 10.0 undecidable manual PN 318 0.035 3.55 0.1
--.LPL.Z. 1991-05-30T00:13:34.10 10.0 undecidable manual PN 307 0.0349 2.11 0.6
--.LPG.Z. 1991-05-30T00:13:34.00 10.0 undecidable manual PN 307 0.0346 2.3 0.5
--.RRL.Z. 1991-05-30T00:13:31.31 10.0 undecidable manual PN 300 0.0318 4.02 0
--.OSS.Z. 1991-05-30T00:13:29.80 10.0 undecidable manual PN 349 0.0319 2.29 0.5
--.BNI.Z. 1991-05-30T00:13:28.50 10.0 undecidable manual PN 301 0.0329 -0.55 1.2
--.FVI.Z. 1991-05-30T00:13:28.67 10.0 undecidable manual PN 18 0.0324 0.46 1.5
--.VDL.Z. 1991-05-30T00:13:27.90 10.0 undecidable manual PN 341 0.0313 1.36 1.1
--.LSD.Z. 1991-05-30T00:13:27.41 10.0 undecidable manual PN 309 0.0324 -0.82 1.1
--.LRG.Z. 1991-05-30T00:13:25.70 10.0 undecidable manual PN 275 0.0309 -0.32 1.4
--.ORX.Z. 1991-05-30T00:13:24.95 10.0 undecidable manual PN 318 0.0296 1.02 1.4
--.LMR.Z. 1991-05-30T00:13:23.60 10.0 undecidable manual PN 273 0.03 -0.88 1.1
--.FRF.Z. 1991-05-30T00:13:22.50 10.0 undecidable manual PN 277 0.0291 -0.77 1.1
--.BHB.Z. 1991-05-30T00:13:21.77 10.0 undecidable manual PN 301 0.0287 -0.86 1.1
--.PZZ.Z. 1991-05-30T00:13:21.67 10.0 undecidable manual PN 295 0.0283 -0.38 1.4
--.PGF.Z. 1991-05-30T00:13:20.90 10.0 undecidable manual SN 247 0.0149 -1.71 0.2
--.STV.Z. 1991-05-30T00:13:18.59 10.0 undecidable manual PN 292 0.0261 -0.09 1.6
--.CTI.Z. 1991-05-30T00:13:17.89 10.0 undecidable manual PN 7 0.0259 -0.38 1.5
--.MDI.Z. 1991-05-30T00:13:16.00 10.0 undecidable manual PN 339 0.0248 -0.63 1.4
--.SBF.Z. 1991-05-30T00:13:15.30 10.0 undecidable manual PN 285 0.0245 -0.87 1.2
--.SDI.Z. 1991-05-30T00:13:14.10 10.0 undecidable manual PN 125 0.0224 0.95 1.5
--.ROB.Z. 1991-05-30T00:13:13.57 10.0 undecidable manual PN 296 0.0231 -0.43 1.5
--.FIN.Z. 1991-05-30T00:13:13.26 10.0 undecidable manual PN 296 0.0207 2.8 0.4
--.IMI.Z. 1991-05-30T00:13:12.23 10.0 undecidable manual PN 287 0.0217 0.28 1.7
--.CKI.Z. 1991-05-30T00:13:10.97 10.0 undecidable manual PN 301 0.0212 -0.23 1.6
--.SAL.Z. 1991-05-30T00:13:10.00 10.0 undecidable manual PN 350 0.0219 -2.29 0.3
--.BOB.Z. 1991-05-30T00:13:06.61 10.0 undecidable manual PN 323 0.0176 0.92 1.6
--.MME.Z. 1991-05-30T00:13:05.50 10.0 undecidable manual SN 344 0.0093 -2.31 0.1
--.SEI.Z. 1991-05-30T00:13:03.00 10.0 undecidable manual SG 12 0.0079 0.1 0.7
--.BDI.Z. 1991-05-30T00:13:03.00 10.0 undecidable manual SG 337 0.0084 -1.64 0.3
--.SFI.Z. 1991-05-30T00:13:02.76 10.0 undecidable manual SG 37 0.008 -0.71 0.6
--.VMG.Z. 1991-05-30T00:13:02.00 10.0 undecidable manual SG 22 0.0074 0.58 0.7
--.PGF.Z. 1991-05-30T00:13:01.00 10.0 undecidable manual PN 247 0.0149 -0.51 1.4
--.PGD.Z. 1991-05-30T00:12:59.88 10.0 undecidable manual SG 33 0.0074 -1.11 0.5
--.CRE.Z. 1991-05-30T00:12:58.49 10.0 undecidable manual SG 55 0.0068 -0.49 0.7
--.MAO.Z. 1991-05-30T00:12:58.68 10.0 undecidable manual SG 175 0.007 -0.95 0.5
--.MNS.Z. 1991-05-30T00:12:58.00 10.0 undecidable manual PN 123 0.0128 -0.3 1.6
--.PTF.Z. 1991-05-30T00:12:58.10 10.0 undecidable manual SG 358 0.0068 -1.03 0.5
--.ARV.Z. 1991-05-30T00:12:57.89 10.0 undecidable manual PN 76 0.0125 0.12 1.7
--.RSM.Z. 1991-05-30T00:12:56.00 10.0 undecidable manual PN 52 0.0111 0.34 1.7
--.PII.Z. 1991-05-30T00:12:54.23 10.0 undecidable manual SG 322 0.0059 -1.7 0.2
--.ASS.Z. 1991-05-30T00:12:54.80 10.0 undecidable manual PN 95 0.0104 -0.48 1.6
--.FIR.Z. 1991-05-30T00:12:54.00 10.0 undecidable manual SG 11 0.0053 0.4 1
--.MME.Z. 1991-05-30T00:12:52.00 10.0 undecidable manual PN 344 0.0093 -0.96 1.2
--.SFI.Z. 1991-05-30T00:12:49.76 10.0 undecidable manual PG 37 0.008 -0.7 1.5
--.VMG.Z. 1991-05-30T00:12:49.00 10.0 undecidable manual PG 22 0.0074 -0.28 1.7
--.SEI.Z. 1991-05-30T00:12:49.60 10.0 undecidable manual PG 12 0.0079 -0.53 1.5
--.BDI.Z. 1991-05-30T00:12:49.70 10.0 undecidable manual PG 337 0.0084 -1.43 0.8
--.PGD.Z. 1991-05-30T00:12:48.55 10.0 undecidable manual PG 33 0.0074 -0.48 1.6
--.CRE.Z. 1991-05-30T00:12:47.47 10.0 undecidable manual PG 55 0.0068 -0.4 1.6
--.MAO.Z. 1991-05-30T00:12:47.75 10.0 undecidable manual PG 175 0.007 -0.49 1.5
--.PTF.Z. 1991-05-30T00:12:46.80 10.0 undecidable manual PG 358 0.0068 -1.15 1.1
--.FIR.Z. 1991-05-30T00:12:45.00 10.0 undecidable manual PG 11 0.0053 0.24 1.7
--.PII.Z. 1991-05-30T00:12:44.71 10.0 positive manual PG 322 0.0059 -1.4 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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