Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 3.2 on date 22-02-2001 and time 05:49:29 (UTC) in region 2 km N Asti (AT)

A magnitude Md 3.2 earthquake occured in region: 2 km N Asti (AT), on

  • 22-02-2001 05:49:29 (UTC)
  • 22-02-2001 06:49:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.9180, 8.2110 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.

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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
Asti AT 2 76202 76202
Portacomaro AT 6 2006 78208
Azzano d'Asti AT 7 391 78599
Castell'Alfero AT 7 2763 81362
Scurzolengo AT 8 555 81917
Mongardino AT 8 921 82838
Rocca d'Arazzo AT 8 936 83774
Revigliasco d'Asti AT 8 767 84541
Castagnole Monferrato AT 9 1245 85786
Castello di Annone AT 9 1860 87646
Vigliano d'Asti AT 9 835 88481
Settime AT 9 530 89011
Baldichieri d'Asti AT 9 1110 90121
Celle Enomondo AT 10 484 90605
Antignano AT 10 974 91579
Isola d'Asti AT 10 2071 93650
Frinco AT 10 768 94418
Cossombrato AT 10 528 94946
Chiusano d'Asti AT 11 220 95166
Montaldo Scarampi AT 11 755 95921
Calliano AT 11 1317 97238
Corsione AT 11 218 97456
Refrancore AT 11 1591 99047
Castellero AT 11 302 99349
Montegrosso d'Asti AT 11 2344 101693
Cinaglio AT 11 446 102139
Monale AT 11 984 103123
Tigliole AT 11 1699 104822
Grana AT 11 600 105422
Villa San Secondo AT 11 395 105817
Montemagno AT 12 1153 106970
Tonco AT 12 866 107836
Camerano Casasco AT 12 471 108307
Rocchetta Tanaro AT 12 1450 109757
Montechiaro d'Asti AT 13 1276 111033
Cerro Tanaro AT 13 626 111659
Cortandone AT 13 329 111988
Mombercelli AT 13 2259 114247
Penango AT 13 488 114735
San Martino Alfieri AT 14 666 115401
Belveglio AT 14 350 115751
Cortazzone AT 14 654 116405
Soglio AT 14 145 116550
Viarigi AT 14 929 117479
Villafranca d'Asti AT 14 3094 120573
Maretto AT 14 375 120948
Cantarana AT 14 982 121930
Agliano Terme AT 14 1642 123572
Cortanze AT 15 277 123849
Costigliole d'Asti AT 15 5914 129763
Alfiano Natta AL 15 744 130507
San Damiano d'Asti AT 15 8315 138822
Vinchio AT 15 601 139423
Roatto AT 15 400 139823
Govone CN 15 2203 142026
Casorzo AT 15 633 142659
Viale AT 15 257 142916
Altavilla Monferrato AL 16 468 143384
Castelnuovo Calcea AT 16 759 144143
Moncalvo AT 16 3033 147176
Quattordio AL 16 1637 148813
Cortiglione AT 16 571 149384
Grazzano Badoglio AT 16 615 149999
Piea AT 16 583 150582
Cunico AT 16 496 151078
Masio AL 17 1420 152498
Montafia AT 17 937 153435
Vaglio Serra AT 17 275 153710
Odalengo Piccolo AL 17 262 153972
Villadeati AL 18 479 154451
Ferrere AT 18 1608 156059
Castelletto Merli AL 18 476 156535
Fubine AL 18 1653 158188
Felizzano AL 18 2344 160532
Moasca AT 18 494 161026
Vignale Monferrato AL 18 1006 162032
Incisa Scapaccino AT 18 2288 164320
Ottiglio AL 18 629 164949
Olivola AL 18 122 165071
Priocca CN 18 2017 167088
Capriglio AT 19 290 167378
Castagnole delle Lanze AT 19 3798 171176
Dusino San Michele AT 19 1022 172198
Frassinello Monferrato AL 19 502 172700
Montiglio Monferrato AT 19 1643 174343
Cisterna d'Asti AT 19 1245 175588
Ponzano Monferrato AL 19 356 175944
San Paolo Solbrito AT 19 1208 177152
Valfenera AT 19 2462 179614
Murisengo AL 19 1436 181050
San Marzano Oliveto AT 19 1047 182097
Nizza Monferrato AT 20 10429 192526
Piovà Massaia AT 20 637 193163
Calosso AT 20 1279 194442

Municipalities with at least 50000 inhabitants

An earthquake occurred to
2 Km N of Asti (76202 inhabitants)
32 Km W of Alessandria (93943 inhabitants)
42 Km E of Moncalieri (57294 inhabitants)
45 Km E of Torino (890529 inhabitants)
67 Km SW of Novara (104380 inhabitants)
68 Km SW of Vigevano (63310 inhabitants)
71 Km NW of Savona (61345 inhabitants)
78 Km NE of Cuneo (56081 inhabitants)
80 Km NW of Genova (586655 inhabitants)
80 Km W of Pavia (72576 inhabitants)
93 Km SW of Busto Arsizio (83106 inhabitants)
94 Km SW of Legnano (60262 inhabitants)
94 Km SW of Rho (50434 inhabitants)
94 Km SW of Gallarate (53343 inhabitants)
98 Km SW of Milano (1345851 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 3.2
ML-VAX 2.2 		2001-02-22
05:49:29		 44.918 8.211 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 411669
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2001-02-22 05:49:29 ± 0.198
Latitude 44.9180 ± 0.0128
Longitude 8.2110 ± 0.0211
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 411669

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) 2186.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.00648
Epicentral distance of station farthest from the epicenter (degree) 0.02388
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:3.2

Field Value
Value 3.2
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 411669
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:27:46

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 411669
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
--.CTI.Z. 2001-02-22T05:50:10.50 10.0 undecidable manual PN! 63 2.6529 -2.52 0
--.MCGN.Z. 2001-02-22T05:50:06.28 10.0 undecidable manual SG 351 1.0434 0.05 0.8
--.VAI.Z. 2001-02-22T05:50:06.10 10.0 undecidable manual SG 22 1.0212 0.65 0.5
--.BR9.Z. 2001-02-22T05:50:05.50 10.0 undecidable manual PN 43 2.1645 -0.75 0.8
--.GU9.Z. 2001-02-22T05:50:01.00 10.0 undecidable manual PN 107 1.776 0.04 1.8
--.EB9.Z. 2001-02-22T05:49:59.73 10.0 undecidable manual PN 106 1.6317 0.7 1
--.ORO.Z. 2001-02-22T05:49:58.50 10.0 undecidable manual SG! 347 0.7215 2.65 0
--.DOI.Z. 2001-02-22T05:49:58.20 10.0 undecidable manual SG 239 0.7992 -0.22 0.8
--.MCGN.Z. 2001-02-22T05:49:50.43 10.0 undecidable manual PG 351 1.0434 -0.34 1.8
--.VAI.Z. 2001-02-22T05:49:49.46 10.0 undecidable manual PG 22 1.0212 -0.86 0.9
--.DOI.Z. 2001-02-22T05:49:46.50 10.0 undecidable manual PG 239 0.7992 -0.11 2.1
--.ORO.Z. 2001-02-22T05:49:45.91 10.0 undecidable manual PG 347 0.7215 1.13 0.4
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