Earthquake with magnitude of Md 3.7 on date 08-09-1997 and time 01:28:06 (Italy) in region 4 km SE Valtopina (PG)

A magnitude Md 3.7 earthquake occured in region: 4 km SE Valtopina (PG), on

  • 07-09-1997 23:28:06 (UTC)
  • 08-09-1997 01:28:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.03, 12.79 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
Valtopina PG 4 1398 1398
Nocera Umbra PG 9 5839 7237
Spello PG 11 8645 15882
Foligno PG 11 57155 73037
Serravalle di Chienti MC 14 1070 74107
Assisi PG 15 28299 102406
Cannara PG 17 4305 106711
Trevi PG 18 8469 115180
Monte Cavallo MC 18 145 115325
Sefro MC 18 422 115747
Bevagna PG 18 5081 120828
Montefalco PG 19 5679 126507
Sellano PG 20 1079 127586
Bastia Umbra PG 20 21874 149460

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km NE of Foligno (57155 inhabitants)
34 Km E of Perugia (166134 inhabitants)
54 Km N of Terni (111501 inhabitants)
86 Km W of Teramo (54892 inhabitants)
88 Km SE of Arezzo (99543 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
91 Km NW of L'Aquila (69753 inhabitants)
92 Km S of Fano (60888 inhabitants)
98 Km S of Pesaro (94582 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 3.7
ML-MEDNET 3.8
1997-09-07
23:28:06
43.03 12.79 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 277239
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-07 23:28:06 ± 0.127
Latitude 43.03 ± 0.02
Longitude 12.79 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 277239

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) 2735.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 55
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00089
Epicentral distance of station farthest from the epicenter (degree) 0.04047
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:3.7

Field Value
Value 3.7
Uncertainty
Num. used stations 39
Type of magnitude Md
Reference to an origin 277239
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:21:55

ML:3.8

Field Value
Value 3.8
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 277239
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 10:37:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MCGN.Z. 1997-09-07T23:29:16.00 10.0 undecidable manual PN 312 0.0405 0.81 0.9
--.DOI.Z. 1997-09-07T23:29:12.25 10.0 undecidable manual PN 291 0.0383 0.33 1.2
--.ORO.Z. 1997-09-07T23:29:12.58 10.0 undecidable manual PN 308 0.0387 0.07 1.3
--.ORI.Z. 1997-09-07T23:29:10.36 10.0 undecidable manual PN 136 0.0363 1.4 0.4
--.VAI.Z. 1997-09-07T23:29:08.65 10.0 undecidable manual PN 315 0.0362 -0.08 1.3
--.BR9.Z. 1997-09-07T23:29:07.77 10.0 undecidable manual PN 334 0.0346 1.59 0.3
--.BRT.Z. 1997-09-07T23:29:06.36 10.0 undecidable manual PN 122 0.035 -0.51 1.2
--.MGR.Z. 1997-09-07T23:29:02.19 10.0 undecidable manual PN 143 0.032 -0.07 1.4
--.CKI.Z. 1997-09-07T23:29:01.15 10.0 undecidable manual PN 294 0.0318 -0.86 0.9
--.FVI.Z. 1997-09-07T23:29:01.85 10.0 undecidable manual PN 359 0.032 -0.41 1.3
--.MDI.Z. 1997-09-07T23:29:01.89 10.0 undecidable manual PN 322 0.0316 0.23 1.4
--.PTCC.Z. 1997-09-07T23:28:58.77 10.0 undecidable manual PN 6 0.0305 -1.23 0.7
--.GE9.Z. 1997-09-07T23:28:56.68 10.0 undecidable manual PN 4 0.0292 -1.41 0.5
--.CTI.Z. 1997-09-07T23:28:56.26 10.0 undecidable manual PN 345 0.028 0.02 1.6
--.SAL.Z. 1997-09-07T23:28:56.12 10.0 undecidable manual PN 328 0.0273 0.98 0.9
--.BOB.Z. 1997-09-07T23:28:55.70 10.0 undecidable manual PN 306 0.0266 1.59 0.4
--.MU9.Z. 1997-09-07T23:28:55.62 10.0 undecidable manual PN 137 0.0273 0.57 1.3
--.SGO.Z. 1997-09-07T23:28:55.21 10.0 undecidable manual PN 141 0.0279 -0.84 1
--.VVI.Z. 1997-09-07T23:28:53.57 10.0 undecidable manual PN 355 0.0266 -0.45 1.4
--.CI9.Z. 1997-09-07T23:28:50.10 10.0 undecidable manual PN 141 0.0246 -0.95 1
--.FG3.Z. 1997-09-07T23:28:50.64 10.0 undecidable manual PN 118 0.0241 0.38 1.6
--.TRI.Z. 1997-09-07T23:28:49.62 10.0 undecidable manual PN 14 0.0249 -1.73 0.3
--.FG5.Z. 1997-09-07T23:28:48.80 10.0 undecidable manual PN 132 0.0228 0.55 1.5
--.DSB1.Z. 1997-09-07T23:28:47.90 10.0 undecidable manual PN 136 0.0214 1.77 0.3
--.RDP.Z. 1997-09-07T23:28:47.51 10.0 undecidable manual SN 182 0.0114 -1.27 0.3
--.PSB1.Z. 1997-09-07T23:28:46.58 10.0 undecidable manual PN 139 0.0211 0.9 1.2
--.SFI.Z. 1997-09-07T23:28:45.20 10.0 undecidable manual SN 322 0.0099 0.3 0.7
--.VTB1.Z. 1997-09-07T23:28:44.85 10.0 undecidable manual PN 142 0.0206 -0.13 1.8
--.SMB1.Z. 1997-09-07T23:28:44.49 10.0 undecidable manual PN 138 0.0195 1.23 0.8
--.PQ9.Z. 1997-09-07T23:28:44.36 10.0 undecidable manual SN 155 0.01 -0.4 0.7
--.EB9.Z. 1997-09-07T23:28:44.83 10.0 undecidable manual PN 309 0.0198 1.14 0.9
--.MAB1.Z. 1997-09-07T23:28:43.60 10.0 undecidable manual PN 143 0.0196 0.27 1.8
--.FG2.Z. 1997-09-07T23:28:43.12 10.0 undecidable manual PN 124 0.0192 0.34 1.7
--.GU9.Z. 1997-09-07T23:28:41.49 10.0 undecidable manual PN 310 0.0185 -0.27 1.8
--.BAI2.Z. 1997-09-07T23:28:41.59 10.0 undecidable manual PN 138 0.0181 0.63 1.5
--.ZC9.Z. 1997-09-07T23:28:40.00 10.0 undecidable manual PN 315 0.0167 1.09 0.9
--.RSM.Z. 1997-09-07T23:28:39.93 10.0 undecidable manual SG 344 0.0083 0.71 0.5
--.RFI.Z. 1997-09-07T23:28:39.46 10.0 undecidable manual PN 152 0.0175 -0.67 1.4
--.PLI2.Z. 1997-09-07T23:28:38.20 10.0 undecidable manual PN 147 0.0159 0.29 1.8
--.CPI2.Z. 1997-09-07T23:28:38.61 10.0 undecidable manual PN 141 0.0165 -0.03 1.8
--.BDI.Z. 1997-09-07T23:28:38.40 10.0 undecidable manual PN 303 0.017 -1.35 0.6
--.PII.Z. 1997-09-07T23:28:37.00 10.0 undecidable manual PN 293 0.016 -0.9 1.1
--.BS9.Z. 1997-09-07T23:28:33.35 10.0 undecidable manual PN 337 0.0121 1.38 0.6
--.SDI.Z. 1997-09-07T23:28:33.88 10.0 undecidable manual PN 149 0.0137 -0.46 1.6
--.RDP.Z. 1997-09-07T23:28:29.88 10.0 undecidable manual PN 182 0.0114 -1.06 0.9
--.RMP.Z. 1997-09-07T23:28:28.86 10.0 undecidable manual PN 182 0.011 -1.37 0.6
--.CSNT.Z. 1997-09-07T23:28:28.63 10.0 undecidable manual PN 292 0.0105 -0.92 1.1
--.SFI.Z. 1997-09-07T23:28:27.17 10.0 undecidable manual PN 322 0.0099 -1.43 0.6
--.PQ9.Z. 1997-09-07T23:28:26.50 10.0 undecidable manual PN! 155 0.01 -2.13 0
--.RSM.Z. 1997-09-07T23:28:24.00 10.0 undecidable manual PG 344 0.0083 -1.43 0.6
--.AQU.Z. 1997-09-07T23:28:20.23 10.0 undecidable manual PG! 146 0.0073 -3.13 0
--.MNS.Z. 1997-09-07T23:28:17.90 10.0 positive manual PG! 186 0.0058 -2.46 0
--.ARV.Z. 1997-09-07T23:28:14.44 10.0 positive manual PG! 13 0.0043 -2.66 0
--.ASS.Z. 1997-09-07T23:28:12.16 10.0 undecidable manual SG 285 0.0009 1.21 0.3
--.ASS.Z. 1997-09-07T23:28:09.36 10.0 positive manual PG 285 0.0009 0.26 3.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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