Earthquake with magnitude of Md 3.5 on date 20-03-1993 and time 20:48:27 (UTC) in region 6 km E Pomarance (PI)

A magnitude Md 3.5 earthquake occured in region: 6 km E Pomarance (PI), on

  • 20-03-1993 20:48:27 (UTC)
  • 20-03-1993 21:48:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3, 10.94 at 5 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
Pomarance PI 6 5897 5897
Radicondoli SI 9 914 6811
Casole d'Elsa SI 9 3897 10708
Castelnuovo di Val di Cecina PI 11 2231 12939
Volterra PI 13 10519 23458
Montecatini Val di Cecina PI 19 1749 25207
Monterotondo Marittimo GR 19 1371 26578
Colle di Val d'Elsa SI 19 21620 48198
Montieri GR 20 1204 49402
Chiusdino SI 20 1903 51305

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km W of Siena (53903 inhabitants)
54 Km SW of Scandicci (50609 inhabitants)
58 Km SW of Firenze (382808 inhabitants)
58 Km E of Livorno (159219 inhabitants)
62 Km N of Grosseto (82087 inhabitants)
64 Km SE of Pisa (89158 inhabitants)
66 Km S of Prato (191150 inhabitants)
70 Km SE of Lucca (89046 inhabitants)
70 Km S of Pistoia (90315 inhabitants)
78 Km W of Arezzo (99543 inhabitants)
84 Km SE of Viareggio (62467 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 3.5
M 3.4
1993-03-20
20:48:27
43.3 10.94 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 181999
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-03-20 20:48:27 ± 0.143
Latitude 43.30 ± 0.01
Longitude 10.94 ± 0.01
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 181999

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) 1672.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 101
Number of defining phases 101
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00461
Epicentral distance of station farthest from the epicenter (degree) 0.06953
Number of stations at which the event was observed 82
Number of stations from which data was used for origin computation 82
Magnitudes information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 9
Type of magnitude Md
Reference to an origin 181999
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:50:48

M:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 181999
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:35:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.LBF.Z. 1993-03-20T20:51:09.40 10.0 undecidable manual SN! 309 0.0552 3.87 0
--.SMF.Z. 1993-03-20T20:51:05.90 10.0 undecidable manual SN! 305 0.0542 2.87 0
--.HAU.Z. 1993-03-20T20:50:55.29 10.0 undecidable manual SN 327 0.0512 0.3 0.5
--.CDF.Z. 1993-03-20T20:50:54.20 10.0 undecidable manual SN 334 0.0513 -1.2 0.2
--.BSF.Z. 1993-03-20T20:50:49.20 10.0 undecidable manual SN 328 0.0484 1.66 0.1
--.OHR.Z. 1993-03-20T20:50:21.50 10.0 undecidable manual PN! 103 0.0685 2.33 0
--.EPF.Z. 1993-03-20T20:50:19.00 10.0 undecidable manual PN 271 0.0695 -1.76 0.2
--.LFF.Z. 1993-03-20T20:50:17.00 10.0 undecidable manual PN 285 0.0674 -0.6 0.9
--.LPO.Z. 1993-03-20T20:50:13.10 10.0 undecidable manual PN 284 0.0643 0.35 1.1
--.BGF.Z. 1993-03-20T20:50:06.30 10.0 undecidable manual PN 302 0.0593 1.23 0.6
--.GRF.Z. 1993-03-20T20:50:04.60 10.0 undecidable manual PN! 1 0.0575 2.23 0
--.CAF.Z. 1993-03-20T20:50:04.30 10.0 undecidable manual PN 287 0.0591 -0.57 1
--.SSF.Z. 1993-03-20T20:50:04.60 10.0 undecidable manual PN 308 0.058 1.47 0.4
--.AVF.Z. 1993-03-20T20:50:03.60 10.0 undecidable manual PN 305 0.0575 1.2 0.6
--.LOR.Z. 1993-03-20T20:50:03.00 10.0 undecidable manual PN 310 0.0572 0.98 0.8
--.LBF.Z. 1993-03-20T20:49:58.80 10.0 undecidable manual PN 309 0.0552 -0.08 1.2
--.KHC.Z. 1993-03-20T20:49:58.00 10.0 undecidable manual PN 16 0.0549 -0.45 1.1
--.SMF.Z. 1993-03-20T20:49:56.70 10.0 undecidable manual PN 305 0.0542 -0.73 0.9
--.HAU.Z. 1993-03-20T20:49:54.20 10.0 undecidable manual PN 327 0.0512 1.41 0.5
--.CDF.Z. 1993-03-20T20:49:53.20 10.0 undecidable manual PN 334 0.0513 0.17 1.3
--.BSF.Z. 1993-03-20T20:49:49.70 10.0 undecidable manual PN 328 0.0484 1.22 0.6
--.ORI.Z. 1993-03-20T20:49:47.00 10.0 undecidable manual PN 126 0.0471 0.46 1.2
--.FEL.Z. 1993-03-20T20:49:44.12 10.0 undecidable manual PN 336 0.045 0.72 1.1
--.SLE.Z. 1993-03-20T20:49:40.70 10.0 undecidable manual PN 339 0.043 0.43 1.3
--.MGR.Z. 1993-03-20T20:49:39.20 10.0 negative manual PN 130 0.042 0.22 2.9
--.PTJ.Z. 1993-03-20T20:49:37.60 10.0 undecidable manual PN! 51 0.0398 2.18 0
--.SGO.Z. 1993-03-20T20:49:35.10 10.0 undecidable manual PN 128 0.0382 2.04 0.2
--.SAL.Z. 1993-03-20T20:49:34.79 10.0 undecidable manual SN 352 0.0209 -0.12 0.7
--.EMS.Z. 1993-03-20T20:49:32.50 10.0 undecidable manual PN! 315 0.0357 3.31 0
--.KBA.Z. 1993-03-20T20:49:32.20 10.0 negative manual PN 22 0.0372 0.77 2.4
--.AQU.Z. 1993-03-20T20:49:29.00 10.0 undecidable manual SN 116 0.0183 0.94 0.5
--.DIX.Z. 1993-03-20T20:49:29.30 10.0 undecidable manual PN! 318 0.0337 3.26 0
--.LLS.Z. 1993-03-20T20:49:28.90 10.0 undecidable manual PN 339 0.0342 2.09 0.2
--.LPL.Z. 1993-03-20T20:49:28.00 10.0 undecidable manual PN! 307 0.0336 2.09 0
--.LPG.Z. 1993-03-20T20:49:27.90 10.0 undecidable manual PN! 307 0.0334 2.29 0
--.VBY.Z. 1993-03-20T20:49:27.40 10.0 undecidable manual PN 52 0.034 0.78 1.2
--.CDR.Z. 1993-03-20T20:49:26.00 10.0 undecidable manual PN 277 0.0339 -0.44 1.5
--.LJU.Z. 1993-03-20T20:49:25.50 10.0 undecidable manual PN 41 0.0336 -0.52 1.4
--.MMK.Z. 1993-03-20T20:49:24.20 10.0 undecidable manual PN 323 0.0312 1.93 0.3
--.BNI.Z. 1993-03-20T20:49:24.40 10.0 undecidable manual PN 300 0.0317 1.04 1
--.FVI.Z. 1993-03-20T20:49:23.26 10.0 positive manual PN 20 0.0318 0.04 3.4
--.RBL.Z. 1993-03-20T20:49:23.95 10.0 positive manual PN 29 0.0328 -0.76 2.5
--.OSS.Z. 1993-03-20T20:49:23.70 10.0 undecidable manual PN 350 0.0308 1.96 0.3
--.VDL.Z. 1993-03-20T20:49:22.00 10.0 negative manual PN 342 0.0301 1.38 1.4
--.BOB.Z. 1993-03-20T20:49:22.92 10.0 undecidable manual SN 323 0.0163 0.07 0.7
--.CEY.Z. 1993-03-20T20:49:21.50 10.0 undecidable manual PN 43 0.0312 -0.89 1.1
--.LSD.Z. 1993-03-20T20:49:21.48 10.0 undecidable manual PN 309 0.0311 -0.66 1.4
--.RRL.Z. 1993-03-20T20:49:21.82 10.0 undecidable manual PN 299 0.0305 0.56 1.5
--.GE9.Z. 1993-03-20T20:49:20.50 10.0 undecidable manual PN 26 0.0302 -0.27 1.7
--.VOY.Z. 1993-03-20T20:49:20.80 10.0 undecidable manual PN 36 0.0309 -1.09 0.9
--.ORX.Z. 1993-03-20T20:49:19.20 10.0 undecidable manual PN 318 0.0283 1.38 0.7
--.RSP.Z. 1993-03-20T20:49:19.66 10.0 undecidable manual PN 305 0.029 0.76 1.3
--.DUI.Z. 1993-03-20T20:49:18.49 10.0 undecidable manual PN 120 0.0276 1.73 0.4
--.TMA.Z. 1993-03-20T20:49:18.80 10.0 undecidable manual PN 332 0.0284 0.7 1.4
--.LRG.Z. 1993-03-20T20:49:18.50 10.0 undecidable manual PN 273 0.03 -1.91 0.3
--.MNS.Z. 1993-03-20T20:49:17.67 10.0 undecidable manual SN 124 0.0141 0.71 0.5
--.RIY.Z. 1993-03-20T20:49:17.80 10.0 undecidable manual PN 48 0.0287 -0.73 1.3
--.LMR.Z. 1993-03-20T20:49:16.20 10.0 undecidable manual PN! 271 0.029 -2.72 0
--.TRI.Z. 1993-03-20T20:49:16.23 10.0 undecidable manual PN 38 0.0282 -1.47 0.6
--.BHB.Z. 1993-03-20T20:49:16.22 10.0 undecidable manual PN 301 0.0274 -0.37 1.6
--.ORO.Z. 1993-03-20T20:49:16.65 10.0 undecidable manual PN 318 0.0283 -1.13 0.9
--.VAI.Z. 1993-03-20T20:49:15.22 10.0 undecidable manual PN 329 0.0269 -0.53 1.5
--.FRF.Z. 1993-03-20T20:49:15.10 10.0 undecidable manual PN! 275 0.0281 -2.52 0
--.PZZ.Z. 1993-03-20T20:49:14.62 10.0 undecidable manual PN 294 0.0271 -1.45 0.6
--.ARV.Z. 1993-03-20T20:49:14.50 10.0 undecidable manual SN 81 0.0131 -0.01 0.7
--.DOI.Z. 1993-03-20T20:49:14.50 10.0 undecidable manual PN 295 0.0262 -0.26 1.7
--.CTI.Z. 1993-03-20T20:49:12.51 10.0 undecidable manual PN 9 0.0251 -0.45 1.6
--.MDI.Z. 1993-03-20T20:49:11.90 10.0 positive manual PN 340 0.0236 0.4 3.3
--.SDI.Z. 1993-03-20T20:49:11.67 10.0 undecidable manual PN 125 0.0238 0.71 1.4
--.STV.Z. 1993-03-20T20:49:11.54 10.0 undecidable manual PN 290 0.0249 -1.21 0.8
--.RSM.Z. 1993-03-20T20:49:09.12 10.0 undecidable manual SN 59 0.0113 -0.45 0.6
--.ASS.Z. 1993-03-20T20:49:08.76 10.0 undecidable manual SN 100 0.0113 -1.05 0.4
--.SAL.Z. 1993-03-20T20:49:07.77 10.0 undecidable manual PN 352 0.0209 1.22 0.8
--.ROB.Z. 1993-03-20T20:49:06.56 10.0 undecidable manual PN 295 0.0219 -1.45 0.6
--.ZC9.Z. 1993-03-20T20:49:04.81 10.0 undecidable manual SG 1 0.0094 0.43 0.6
--.FIN.Z. 1993-03-20T20:49:03.26 10.0 undecidable manual PN 295 0.0195 -1.22 0.8
--.PCP.Z. 1993-03-20T20:49:03.40 10.0 undecidable manual PN 306 0.0191 -0.79 1.3
--.IMI.Z. 1993-03-20T20:49:03.88 10.0 undecidable manual PN! 286 0.0206 -2.21 0
--.AQU.Z. 1993-03-20T20:49:03.45 10.0 undecidable manual PN 116 0.0183 0.85 1.2
--.CKI.Z. 1993-03-20T20:49:03.68 10.0 undecidable manual PN 300 0.02 -1.48 0.6
--.RMP.Z. 1993-03-20T20:49:02.00 10.0 undecidable manual PN 138 0.0177 0.24 1.7
--.RDP.Z. 1993-03-20T20:49:02.68 10.0 undecidable manual PN 138 0.0181 0.27 1.7
--.BOB.Z. 1993-03-20T20:49:01.41 10.0 undecidable manual PN 323 0.0163 1.81 0.3
--.SFI.Z. 1993-03-20T20:48:58.92 10.0 undecidable manual SG 46 0.0079 -0.3 0.7
--.CRE.Z. 1993-03-20T20:48:56.50 10.0 undecidable manual SG 65 0.0071 0.24 0.7
--.PGD.Z. 1993-03-20T20:48:55.50 10.0 undecidable manual SG 43 0.0072 -0.97 0.4
--.BDI.Z. 1993-03-20T20:48:55.35 10.0 undecidable manual SG 341 0.0071 -1.02 0.4
--.MNS.Z. 1993-03-20T20:48:55.37 10.0 undecidable manual PN 124 0.0141 -0.82 1.2
--.PGF.Z. 1993-03-20T20:48:54.80 10.0 undecidable manual PN 242 0.0145 -1.97 0.2
--.ARV.Z. 1993-03-20T20:48:54.00 10.0 positive manual PN 81 0.0131 -0.77 1.3
--.RSM.Z. 1993-03-20T20:48:52.46 10.0 undecidable manual PN 59 0.0113 0.53 1.5
--.ASS.Z. 1993-03-20T20:48:51.24 10.0 positive manual PN 100 0.0113 -0.82 2.5
--.ZC9.Z. 1993-03-20T20:48:49.26 10.0 undecidable manual PG 1 0.0094 0.33 1.7
--.FIR.Z. 1993-03-20T20:48:47.00 10.0 undecidable manual SG 25 0.0047 -0.47 0.9
--.PII.Z. 1993-03-20T20:48:46.99 10.0 undecidable manual SG 323 0.0046 -0.32 0.7
--.SFI.Z. 1993-03-20T20:48:45.54 10.0 positive manual PG 46 0.0079 -0.41 1.6
--.PGD.Z. 1993-03-20T20:48:44.00 10.0 positive manual PG 43 0.0072 -0.36 3.3
--.BDI.Z. 1993-03-20T20:48:43.35 10.0 undecidable manual PG 341 0.0071 -0.96 1.1
--.CRE.Z. 1993-03-20T20:48:43.86 10.0 positive manual PG 65 0.0071 -0.38 3.2
--.PII.Z. 1993-03-20T20:48:38.80 10.0 positive manual PG 323 0.0046 -1 1
--.FIR.Z. 1993-03-20T20:48:38.50 10.0 positive manual PG 25 0.0047 -0.66 2.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download