Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 3.3 on date 10-01-1998 and time 22:22:09 (Italy) in region 1 km SE Garzigliana (TO)

A magnitude Md 3.3 earthquake occured in region: 1 km SE Garzigliana (TO), on

  • 10-01-1998 21:22:09 (UTC)
  • 10-01-1998 22:22:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.8310, 7.3920 at 11 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Garzigliana TO 2 572 572
Macello TO 3 1229 1801
Osasco TO 4 1141 2942
Buriasco TO 5 1410 4352
Cavour TO 5 5545 9897
Campiglione Fenile TO 6 1390 11287
Bricherasio TO 7 4616 15903
Pinerolo TO 8 35808 51711
San Secondo di Pinerolo TO 8 3575 55286
Vigone TO 8 5182 60468
Bibiana TO 9 3442 63910
Cercenasco TO 9 1803 65713
Bagnolo Piemonte CN 10 6024 71737
Piscina TO 10 3388 75125
Prarostino TO 10 1273 76398
San Pietro Val Lemina TO 11 1448 77846
Villafranca Piemonte TO 11 4729 82575
Scalenghe TO 11 3339 85914
Lusernetta TO 12 506 86420
Luserna San Giovanni TO 12 7395 93815
Porte TO 12 1083 94898
Roletto TO 12 2009 96907
Cardè CN 12 1122 98029
Frossasco TO 12 2864 100893
Airasca TO 12 3794 104687
Barge CN 13 7774 112461
Cantalupa TO 13 2553 115014
Torre Pellice TO 13 4551 119565
Angrogna TO 13 889 120454
Moretta CN 14 4136 124590
San Germano Chisone TO 14 1854 126444
Virle Piemonte TO 15 1206 127650
Villar Perosa TO 15 4092 131742
Faule CN 15 486 132228
Torre San Giorgio CN 15 730 132958
Pancalieri TO 16 2038 134996
Rorà TO 16 257 135253
Castagnole Piemonte TO 16 2245 137498
None TO 16 8005 145503
Pramollo TO 16 258 145761
Polonghera CN 17 1160 146921
Envie CN 17 2074 148995
Volvera TO 17 8840 157835
Cumiana TO 17 7826 165661
Osasio TO 18 936 166597
Pinasca TO 18 3051 169648
Villanova Solaro CN 18 772 170420
Paesana CN 18 2784 173204
Villar Pellice TO 19 1076 174280
Casalgrasso CN 19 1480 175760
Piossasco TO 19 18589 194349
Murello CN 19 966 195315
Inverso Pinasca TO 19 730 196045
Lombriasco TO 19 1050 197095
Revello CN 20 4262 201357

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km SW of Moncalieri (57294 inhabitants)
35 Km SW of Torino (890529 inhabitants)
50 Km N of Cuneo (56081 inhabitants)
65 Km W of Asti (76202 inhabitants)
97 Km W of Alessandria (93943 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 3.3
ML-VAX 2.3 		1998-01-10
21:22:09		 44.831 7.392 11 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 320039
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-01-10 21:22:09 ± 0.239
Latitude 44.8310 ± 0.0151
Longitude 7.3920 ± 0.0232
Depth (km) 11 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 320039

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) 2481.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00308
Epicentral distance of station farthest from the epicenter (degree) 0.04007
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

Md:3.3

Field Value
Value 3.3
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 320039
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:00:03

ML:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 320039
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(km) Takeoff_angle Residual Weight
--.PTCC.Z. 1998-01-10T21:23:17.86 10.0 undecidable manual PN 67 4.4511 1.47 0.1
--.FVI.Z. 1998-01-10T21:23:12.68 10.0 undecidable manual PN 62 4.1403 0.42 0.8
--.BR9.Z. 1998-01-10T21:22:53.30 10.0 undecidable manual PN 50 2.6529 1.35 0.3
--.BOB.Z. 1998-01-10T21:22:53.87 10.0 undecidable manual SN 91 1.4541 -0.46 0.6
--.VAI.Z. 1998-01-10T21:22:52.75 10.0 undecidable manual SN 42 1.4097 -0.58 0.5
--.SAL.Z. 1998-01-10T21:22:47.34 10.0 undecidable manual PN 69 2.331 -0.02 1.3
--.CKI.Z. 1998-01-10T21:22:35.55 10.0 undecidable manual SG 122 0.7437 0.2 0.6
--.BOB.Z. 1998-01-10T21:22:35.18 10.0 undecidable manual PN 91 1.4541 -0.11 1.6
--.VAI.Z. 1998-01-10T21:22:33.82 10.0 undecidable manual PN 42 1.4097 -0.89 0.8
--.MCGN.Z. 1998-01-10T21:22:30.85 10.0 undecidable manual PN 20 1.1988 -0.88 0.8
--.BNI.Z. 1998-01-10T21:22:28.18 10.0 undecidable manual SG 293 0.5439 -0.67 0.4
--.ORO.Z. 1998-01-10T21:22:27.21 10.0 undecidable manual PG 27 0.888 0.2 1.6
--.CKI.Z. 1998-01-10T21:22:23.31 10.0 negative manual PG 122 0.7437 -1.02 1.3
--.DOI.Z. 1998-01-10T21:22:21.94 10.0 undecidable manual SG 197 0.3441 -0.3 0.6
--.BNI.Z. 1998-01-10T21:22:20.46 10.0 undecidable manual PG 293 0.5439 -0.12 1.6
--.DOI.Z. 1998-01-10T21:22:17.17 10.0 positive manual PG 197 0.3441 0.41 2.9
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, /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