Earthquake with magnitude of Md 4.4 on date 03-09-1997 and time 22:07:30 (UTC) in region 7 km E Valtopina (PG)

A magnitude Md 4.4 earthquake occured in region: 7 km E Valtopina (PG), on

  • 03-09-1997 22:07:30 (UTC)
  • 04-09-1997 00:07:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0590, 12.8410 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 7 1398 1398
Nocera Umbra PG 7 5839 7237
Serravalle di Chienti MC 9 1070 8307
Sefro MC 13 422 8729
Monte Cavallo MC 15 145 8874
Spello PG 16 8645 17519
Foligno PG 16 57155 74674
Fiuminata MC 16 1402 76076
Muccia MC 17 915 76991
Pieve Torina MC 17 1458 78449
Pioraco MC 18 1134 79583
Assisi PG 18 28299 107882
Gualdo Tadino PG 20 15208 123090
Pievebovigliana MC 20 866 123956

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NE of Foligno (57155 inhabitants)
37 Km E of Perugia (166134 inhabitants)
58 Km N of Terni (111501 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
83 Km NW of Teramo (54892 inhabitants)
89 Km S of Fano (60888 inhabitants)
90 Km SE of Arezzo (99543 inhabitants)
91 Km NW of L'Aquila (69753 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
95 Km S of Pesaro (94582 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 4.4
MLNET 4.8
1997-09-03
22:07:30
43.059 12.841 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 276769
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-03 22:07:30 ± 0.108
Latitude 43.0590 ± 0.0129
Longitude 12.8410 ± 0.0184
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 276769

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) 2068.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 72
Number of defining phases 72
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) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.04986
Number of stations at which the event was observed 63
Number of stations from which data was used for origin computation 63
Magnitudes information

Md:4.4

Field Value
Value 4.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 276769
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:21:29

ML:4.8

Field Value
Value 4.8
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 276769
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
--.CTI.Z. 1997-09-03T22:08:57.31 10.0 undecidable manual SN 344 0.0279 1.33 0.2
--.MO9.Z. 1997-09-03T22:08:53.56 10.0 undecidable manual PN 155 0.0495 0.93 0.7
--.SOI.Z. 1997-09-03T22:08:52.77 10.0 undecidable manual PN 152 0.0499 -0.53 1
--.GMB.Z. 1997-09-03T22:08:51.31 10.0 undecidable manual PN 154 0.0485 0.2 1.1
--.CS9.Z. 1997-09-03T22:08:50.30 10.0 undecidable manual PN 169 0.0468 1.46 0.3
--.MNO.Z. 1997-09-03T22:08:50.10 10.0 undecidable manual PN 163 0.0478 -0.07 1.2
--.ATN.Z. 1997-09-03T22:08:50.30 10.0 undecidable manual PN 156 0.0475 0.59 1
--.SC9.Z. 1997-09-03T22:08:49.83 10.0 undecidable manual PN 154 0.0474 0.33 1.1
--.GIB.Z. 1997-09-03T22:08:48.81 10.0 undecidable manual PN 169 0.0463 1.03 0.6
--.GRI.Z. 1997-09-03T22:08:46.54 10.0 undecidable manual PN 146 0.0452 0.45 1.1
--.BNI.Z. 1997-09-03T22:08:44.97 10.0 undecidable manual PN 296 0.0436 1.21 0.5
--.SA1.Z. 1997-09-03T22:08:42.80 10.0 undecidable manual PN 160 0.0426 0.59 1
--.MCGN.Z. 1997-09-03T22:08:38.68 10.0 undecidable manual PN 311 0.0406 -0.4 1.2
--.ORO.Z. 1997-09-03T22:08:36.24 10.0 undecidable manual PN 308 0.0389 -0.19 1.3
--.DOI.Z. 1997-09-03T22:08:35.93 10.0 undecidable manual PN 291 0.0385 -0.07 1.4
--.ORI.Z. 1997-09-03T22:08:33.96 10.0 undecidable manual PN 136 0.0363 1.4 0.4
--.VAI.Z. 1997-09-03T22:08:32.76 10.0 undecidable manual PN 315 0.0363 0.19 1.4
--.BR9.Z. 1997-09-03T22:08:31.37 10.0 undecidable manual PN 333 0.0345 1.54 0.3
--.BRT.Z. 1997-09-03T22:08:29.94 10.0 undecidable manual PN 122 0.0348 -0.39 1.3
--.BDI.Z. 1997-09-03T22:08:28.12 10.0 undecidable manual SN 302 0.0172 0.55 0.6
--.FVI.Z. 1997-09-03T22:08:25.64 10.0 undecidable manual PN 359 0.0317 -0.01 1.5
--.MDI.Z. 1997-09-03T22:08:25.92 10.0 undecidable manual PN 321 0.0317 0.49 1.3
--.MGR.Z. 1997-09-03T22:08:25.67 10.0 undecidable manual PN 144 0.0320 -0.27 1.4
--.CKI.Z. 1997-09-03T22:08:25.79 10.0 undecidable manual PN 293 0.0321 -0.27 1.4
--.PII.Z. 1997-09-03T22:08:24.84 10.0 undecidable manual SN 292 0.0163 -0.3 0.7
--.PTCC.Z. 1997-09-03T22:08:22.65 10.0 undecidable manual PN 5 0.0303 -0.68 1.2
--.GE9.Z. 1997-09-03T22:08:20.92 10.0 undecidable manual PN 3 0.0290 -0.51 1.4
--.SAL.Z. 1997-09-03T22:08:19.93 10.0 undecidable manual PN 327 0.0273 1.09 0.8
--.BOB.Z. 1997-09-03T22:08:19.52 10.0 undecidable manual PN 305 0.0268 1.47 0.4
--.CTI.Z. 1997-09-03T22:08:19.90 10.0 undecidable manual PN 344 0.0279 0.13 1.6
--.SGO.Z. 1997-09-03T22:08:18.73 10.0 undecidable manual PN 142 0.0278 -0.98 0.9
--.MU9.Z. 1997-09-03T22:08:18.53 10.0 undecidable manual PN 138 0.0272 -0.13 1.6
--.CA9.Z. 1997-09-03T22:08:18.20 10.0 undecidable manual PN 137 0.0260 1.13 0.8
--.FG4.Z. 1997-09-03T22:08:14.73 10.0 undecidable manual PN 133 0.0249 -0.38 1.6
--.FG3.Z. 1997-09-03T22:08:13.56 10.0 undecidable manual PN 119 0.0240 -0.13 1.7
--.CI9.Z. 1997-09-03T22:08:13.71 10.0 undecidable manual PN 142 0.0245 -0.91 1
--.TRI.Z. 1997-09-03T22:08:13.63 10.0 positive manual PN 13 0.0245 -0.98 1.9
--.MRB1.Z. 1997-09-03T22:08:12.40 10.0 undecidable manual PN 139 0.0224 0.63 1.4
--.CSNT.Z. 1997-09-03T22:08:12.19 10.0 undecidable manual SN 290 0.0108 1.47 0.2
--.FG5.Z. 1997-09-03T22:08:12.39 10.0 undecidable manual PN 133 0.0227 0.57 1.4
--.DSB1.Z. 1997-09-03T22:08:11.50 10.0 undecidable manual PN 137 0.0213 1.31 0.6
--.RDP.Z. 1997-09-03T22:08:11.54 10.0 undecidable manual SN 183 0.0117 -1.59 0.1
--.RMP.Z. 1997-09-03T22:08:10.60 10.0 undecidable manual SN 184 0.0113 -1.83 0.1
--.MSB1.Z. 1997-09-03T22:08:10.20 10.0 undecidable manual PN 144 0.0215 0.13 1.7
--.PSB1.Z. 1997-09-03T22:08:09.48 10.0 undecidable manual PN 140 0.0210 0.16 1.7
--.EB9.Z. 1997-09-03T22:08:09.46 10.0 undecidable manual PN 308 0.0199 1.86 0.2
--.SFI.Z. 1997-09-03T22:08:08.59 10.0 undecidable manual SN 319 0.0100 0.04 0.7
--.VTB1.Z. 1997-09-03T22:08:07.75 10.0 undecidable manual PN 143 0.0206 -0.91 1
--.SMB1.Z. 1997-09-03T22:08:07.75 10.0 undecidable manual PN 139 0.0194 0.86 1.1
--.FG2.Z. 1997-09-03T22:08:06.26 10.0 undecidable manual PN 125 0.0190 0 1.7
--.MAB1.Z. 1997-09-03T22:08:06.25 10.0 undecidable manual PN 145 0.0196 -0.77 1.2
--.GU9.Z. 1997-09-03T22:08:05.57 10.0 undecidable manual PN 309 0.0187 -0.09 1.7
--.CL9.Z. 1997-09-03T22:08:05.16 10.0 undecidable manual PN 334 0.0181 0.45 1.5
--.BAI2.Z. 1997-09-03T22:08:04.49 10.0 undecidable manual PN 140 0.0180 -0.11 1.7
--.ZC9.Z. 1997-09-03T22:08:03.00 10.0 undecidable manual PN 314 0.0168 0.23 1.7
--.BDI.Z. 1997-09-03T22:08:02.31 10.0 undecidable manual PN 302 0.0172 -1.05 0.9
--.RFI.Z. 1997-09-03T22:08:02.99 10.0 undecidable manual PN 153 0.0175 -0.93 1
--.CPI2.Z. 1997-09-03T22:08:01.45 10.0 undecidable manual PN 142 0.0164 -0.85 1.1
--.PII.Z. 1997-09-03T22:08:01.36 10.0 undecidable manual PN 292 0.0163 -0.61 1.4
--.PLI2.Z. 1997-09-03T22:08:00.37 10.0 undecidable manual PN 148 0.0159 -1.1 0.8
--.AQU.Z. 1997-09-03T22:08:00.00 10.0 undecidable manual SG 149 0.0073 0.63 0.5
--.SDI.Z. 1997-09-03T22:07:56.20 10.0 undecidable manual PN! 151 0.0137 -2.08 0
--.RDP.Z. 1997-09-03T22:07:53.39 10.0 undecidable manual PN 183 0.0117 -1.63 0.3
--.RMP.Z. 1997-09-03T22:07:52.52 10.0 undecidable manual PN 184 0.0113 -1.79 0.2
--.CSNT.Z. 1997-09-03T22:07:52.44 10.0 undecidable manual PN 290 0.0108 -1.2 0.7
--.SFI.Z. 1997-09-03T22:07:51.15 10.0 undecidable manual PN 319 0.0100 -1.24 0.7
--.PQ9.Z. 1997-09-03T22:07:48.81 10.0 undecidable manual PN! 157 0.0100 -3.63 0
--.RSM.Z. 1997-09-03T22:07:47.94 10.0 undecidable manual PG 341 0.0082 -0.98 1
--.AQU.Z. 1997-09-03T22:07:43.63 10.0 negative manual PG! 149 0.0073 -3.45 0
--.ARV.Z. 1997-09-03T22:07:38.57 10.0 positive manual PG 9 0.0040 -1.66 0.6
--.ASS.Z. 1997-09-03T22:07:36.18 10.0 undecidable manual SG 271 0.0012 0.28 0.7
--.ASS.Z. 1997-09-03T22:07:33.16 10.0 positive manual PG 271 0.0012 -0.38 3.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download