Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.0 on date 04-08-2021 and time 12:02:52 (Italy) in region 1 km NW Albiano (TN)

A magnitude ML 1.0 (quarry blast) earthquake occured in region: 1 km NW Albiano (TN), on

  • 04-08-2021 10:02:52 (UTC)
  • 04-08-2021 12:02:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.1530, 11.1830 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: quarry blast.

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
Albiano TN 1 1514 1514
Giovo TN 2 2513 4027
Lona-Lases TN 3 890 4917
Cembra Lisignago TN 4 2364 7281
Fornace TN 4 1355 8636
Faedo TN 5 616 9252
Baselga di Pinè TN 5 5031 14283
Altavalle TN 5 1648 15931
Lavis TN 6 8915 24846
San Michele all'Adige TN 6 3042 27888
Nave San Rocco TN 6 1398 29286
Zambana TN 7 1733 31019
Civezzano TN 7 4002 35021
Segonzano TN 7 1505 36526
Mezzocorona TN 9 5446 41972
Fai della Paganella TN 9 894 42866
Bedollo TN 9 1483 44349
Mezzolombardo TN 10 7067 51416
Salorno BZ 10 3758 55174
Trento TN 10 117317 172491
Sant'Orsola Terme TN 11 1098 173589
Roverè della Luna TN 11 1636 175225
Pergine Valsugana TN 11 21280 196505
Frassilongo TN 11 338 196843
Fierozzo TN 11 469 197312
Cavedago TN 12 517 197829
Spormaggiore TN 13 1289 199118
Sover TN 13 838 199956
Palù del Fersina TN 13 173 200129
Cortina sulla strada del vino BZ 13 642 200771
Andalo TN 14 1076 201847
Vignola-Falesina TN 14 162 202009
Ton TN 15 1338 203347
Sporminore TN 15 700 204047
Magrè sulla strada del vino BZ 15 1279 205326
Altopiano della Vigolana TN 16 4942 210268
Vallelaghi TN 16 5044 215312
Valfloriana TN 16 504 215816
Campodenno TN 16 1500 217316
Tenna TN 17 993 218309
Molveno TN 17 1134 219443
Denno TN 17 1297 220740
Calceranica al Lago TN 17 1387 222127
Capriana TN 17 588 222715
Garniga Terme TN 18 388 223103
Cortaccia sulla strada del vino BZ 18 2225 225328
Levico Terme TN 18 7915 233243
Contà TN 19 1454 234697
Caldonazzo TN 19 3631 238328
Egna BZ 19 5232 243560
Anterivo BZ 20 395 243955

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km NE of Trento (117317 inhabitants)
41 Km SW of Bolzano (106441 inhabitants)
73 Km NW of Vicenza (112953 inhabitants)
81 Km N of Verona (258765 inhabitants)
98 Km NW of Treviso (83731 inhabitants)
99 Km NW of Padova (210401 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
Bulletin
Rev1000 		ML 1.0 2021-08-04
10:02:52		 46.1527 11.183 1 2021-12-29
11:12:41		 Bollettino Sismico Italiano INGV 97117311
Reviewed
Rev100 		ML 1.0 2021-08-04
10:02:52		 46.1505 11.1938 5 2021-08-04
10:09:07		 Sala Sismica INGV-Roma 93662781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-04 10:02:52 ± 0.13
Latitude 46.1527 ± 0.0081
Longitude 11.1830 ± 0.0169
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 97117311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1350
Semi-minor axis of confidence ellipse (meter) 790
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 288
Circular confidence region, given by single value of horizontal uncertainty (meter) 1350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.14659
Epicentral distance of station farthest from the epicenter (degree) 0.66460
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 97117311
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-31 20:40:09

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 93662781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-04 10:09:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRES.EHZ. 2021-08-04T10:03:05.86 0.1 undecidable manual P 35 73.7706 50 -0.44 84
SI.ABSI.HHZ. 2021-08-04T10:03:04.44 0.1 undecidable manual P 9 64.7907 50 -0.46 85
IV.MAGA.HHZ. 2021-08-04T10:03:03.60 0.3 undecidable manual P 226 59.7957 90 -0.54 63
IV.APPI.EHZ. 2021-08-04T10:02:59.64 0.1 undecidable manual P 5 36.3414 91 0.21 95
SI.KOSI.HHZ. 2021-08-04T10:02:59.81 0.3 undecidable manual P 23 37.5291 91 0.14 72
ST.OZOL.EHZ. 2021-08-04T10:02:58.47 0.3 undecidable manual P 340 29.6481 91 0.38 69
ST.DOSS.HHZ. 2021-08-04T10:02:58.01 0.1 undecidable manual P 179 30.1476 91 -0.18 96
SI.LUSI.HHZ. 2021-08-04T10:02:57.80 0.1 undecidable manual P 221 28.2495 91 -0.01 100
ST.GAGG.HHZ. 2021-08-04T10:02:56.28 0.1 undecidable manual P 246 18.87 92 0.35 95
ST.PANI.EHZ. 2021-08-04T10:02:55.85 0.1 undecidable manual P 134 16.2726 92 0.44 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
ST.DOSS.HHN. ML:1.0 0.000051500000000000005 0.94 AML other m 2021-08-04T10:02:59.67
ST.PANI.EHN. ML:1.0 0.00010975 0.22 AML other m 2021-08-04T10:02:59.31
ST.PANI.EHE. ML:0.8 0.00006405 0.28 AML other m 2021-08-04T10:02:59.37
SI.LUSI.HHN. ML:1.5 0.000163 0.18 AML other m 2021-08-04T10:02:59.37
ST.GAGG.HHN. ML:0.9 0.00006845000000000001 1.78 AML other m 2021-08-04T10:03:00.96
ST.GAGG.HNN. ML:1.0 0.00009285218000000001 0.9216 AML other m 2021-08-04T10:03:02.57
ST.GAGG.HHE. ML:0.9 0.0000738 0.94 AML other m 2021-08-04T10:03:02.11
SI.LUSI.HHE. ML:1.0 0.000055849999999999996 0.24 AML other m 2021-08-04T10:03:03.59
ST.DOSS.HHE. ML:0.8 0.0000369 0.86 AML other m 2021-08-04T10:03:04.29
ST.OZOL.EHE. ML:1.3 0.00010265047 1.4368 AML other m 2021-08-04T10:03:04.16
ST.OZOL.EHN. ML:0.9 0.000044901184999999995 0.5376 AML other m 2021-08-04T10:03:06.15
SI.KOSI.HHN. ML:0.9 0.000030423164999999998 0.4416 AML other m 2021-08-04T10:03:06.60
IV.MAGA.HHE. ML:1.4 0.00004969540999999999 1.4176 AML other m 2021-08-04T10:03:16.09
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download