Earthquake with magnitude of Md 2.3 on date 23-04-1985 and time 08:38:28 (Italy) in region 1 km SW Chiuduno (BG)

A magnitude Md 2.3 earthquake occured in region: 1 km SW Chiuduno (BG), on

  • 23-04-1985 06:38:28 (UTC)
  • 23-04-1985 08:38:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.64, 9.84 at 9 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
Chiuduno BG 1 5990 5990
Bolgare BG 2 6151 12141
Telgate BG 2 5050 17191
Grumello del Monte BG 3 7366 24557
Carobbio degli Angeli BG 4 4697 29254
Calcinate BG 4 5958 35212
Gorlago BG 4 5159 40371
Montello BG 4 3260 43631
Costa di Mezzate BG 4 3333 46964
Gandosso BG 5 1491 48455
Castelli Calepio BG 5 10377 58832
Bagnatica BG 5 4292 63124
Zandobbio BG 5 2720 65844
Palazzolo sull'Oglio BS 6 20134 85978
Mornico al Serio BG 6 2965 88943
San Paolo d'Argon BG 6 5591 94534
Cavernago BG 6 2624 97158
Trescore Balneario BG 6 9951 107109
Palosco BG 6 5819 112928
Cenate Sotto BG 7 3745 116673
Brusaporto BG 7 5569 122242
Credaro BG 7 3542 125784
Capriolo BS 8 9397 135181
Albano Sant'Alessandro BG 8 8252 143433
Entratico BG 8 1947 145380
Pontoglio BS 8 6935 152315
Cenate Sopra BG 8 2545 154860
Villongo BG 8 8006 162866
Torre de' Roveri BG 8 2436 165302
Foresto Sparso BG 8 3100 168402
Ghisalba BG 9 6175 174577
Grassobbio BG 9 6406 180983
Luzzana BG 9 912 181895
Adro BS 9 7086 188981
Martinengo BG 9 10448 199429
Paratico BS 10 4714 204143
Cividate al Piano BG 10 5215 209358
Sarnico BG 10 6660 216018
Berzo San Fermo BG 10 1362 217380
Borgo di Terzo BG 10 1146 218526
Cologne BS 10 7667 226193
Pedrengo BG 10 6042 232235
Vigano San Martino BG 11 1348 233583
Seriate BG 11 25182 258765
Adrara San Martino BG 11 2225 260990
Viadanica BG 11 1120 262110
Grone BG 11 910 263020
Scanzorosciate BG 11 10076 273096
Erbusco BS 11 8633 281729
Gorle BG 12 6610 288339
Cortenuova BG 12 1978 290317
Villa di Serio BG 12 6668 296985
Orio al Serio BG 12 1770 298755
Adrara San Rocco BG 12 837 299592
Cologno al Serio BG 12 11133 310725
Zanica BG 12 8616 319341
Urgnano BG 13 9735 329076
Pradalunga BG 13 4673 333749
Azzano San Paolo BG 13 7602 341351
Corte Franca BS 13 7233 348584
Nembro BG 13 11622 360206
Alzano Lombardo BG 13 13636 373842
Torre Boldone BG 13 8690 382532
Casazza BG 14 4026 386558
Chiari BS 14 18887 405445
Comun Nuovo BG 14 4331 409776
Gaverina Terme BG 14 874 410650
Ranica BG 14 5981 416631
Coccaglio BS 14 8767 425398
Albino BG 14 18074 443472
Urago d'Oglio BS 14 3876 447348
Bergamo BG 15 119381 566729
Stezzano BG 15 13018 579747
Spirano BG 15 5700 585447
Rovato BS 15 19209 604656
Predore BG 15 1853 606509
Calcio BG 15 5352 611861
Romano di Lombardia BG 15 20217 632078
Spinone al Lago BG 15 1029 633107
Cene BG 16 4300 637407
Monasterolo del Castello BG 16 1150 638557
Provaglio d'Iseo BS 16 7318 645875
Cazzago San Martino BS 16 10996 656871
Bianzano BG 16 629 657500
Morengo BG 16 2554 660054
Covo BG 16 4041 664095
Pognano BG 17 1602 665697
Iseo BS 17 9179 674876
Levate BG 17 3809 678685
Lallio BG 17 4172 682857
Vigolo BG 17 592 683449
Verdello BG 17 8018 691467
Castelcovati BS 17 6583 698050
Selvino BG 17 2010 700060
Rudiano BS 17 5830 705890
Bariano BG 17 4342 710232
Pagazzano BG 18 2090 712322
Ponteranica BG 18 6849 719171
Gazzaniga BG 18 5092 724263
Fara Olivana con Sola BG 18 1293 725556
Lurano BG 18 2792 728348
Antegnate BG 18 3206 731554
Fiorano al Serio BG 18 3000 734554
Tavernola Bergamasca BG 18 2101 736655
Aviatico BG 18 543 737198
Verdellino BG 18 7663 744861
Pumenengo BG 18 1712 746573
Castrezzato BS 18 7116 753689
Sorisole BG 18 9073 762762
Treviolo BG 18 10682 773444
Passirano BS 18 7098 780542
Leffe BG 18 4531 785073
Ranzanico BG 18 1207 786280
Brignano Gera d'Adda BG 18 6031 792311
Peia BG 18 1839 794150
Dalmine BG 19 23281 817431
Curno BG 19 7651 825082
Vertova BG 19 4720 829802
Parzanica BG 19 362 830164
Fontanella BG 19 4511 834675
Arcene BG 19 4811 839486
Barbata BG 19 707 840193
Mozzo BG 19 7481 847674
Isso BG 19 650 848324
Osio Sopra BG 19 5235 853559
Fonteno BG 19 637 854196
Castel Rozzone BG 19 2916 857112
Cazzano Sant'Andrea BG 19 1675 858787
Osio Sotto BG 19 12443 871230
Paderno Franciacorta BS 19 3734 874964
Ciserano BG 20 5769 880733
Colzate BG 20 1668 882401
Gandino BG 20 5434 887835
Casnigo BG 20 3273 891108
Endine Gaiano BG 20 3496 894604
Valbrembo BG 20 4229 898833

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Bergamo (119381 inhabitants)
32 Km W of Brescia (196480 inhabitants)
44 Km E of Monza (122671 inhabitants)
48 Km E of Sesto San Giovanni (81608 inhabitants)
50 Km E of Cinisello Balsamo (75078 inhabitants)
54 Km E of Milano (1345851 inhabitants)
58 Km N of Cremona (71901 inhabitants)
62 Km E of Como (84495 inhabitants)
63 Km E of Rho (50434 inhabitants)
66 Km N of Piacenza (102191 inhabitants)
72 Km E of Legnano (60262 inhabitants)
73 Km NE of Pavia (72576 inhabitants)
77 Km E of Busto Arsizio (83106 inhabitants)
81 Km E of Gallarate (53343 inhabitants)
81 Km E of Varese (80799 inhabitants)
84 Km E of Vigevano (63310 inhabitants)
93 Km W of Verona (258765 inhabitants)
97 Km E of Novara (104380 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 2.3 1985-04-23
06:38:28
45.64 9.84 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 5329
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-23 06:38:28 ± 1.21
Latitude 45.64 ± 0.09
Longitude 9.84 ± 0.03
Depth (km) 9 ± 7 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 5329

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) 10337.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 193
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00146
Epicentral distance of station farthest from the epicenter (degree) 0.02428
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 5329
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FO1.Z. 1985-04-23T06:39:35.00 10.0 undecidable manual SN? 63 0.0202 2.31 0
--.RBL.Z. 1985-04-23T06:39:12.00 10.0 undecidable manual PN 71 0.0243 0.22 0.9
--.CTI.Z. 1985-04-23T06:39:09.00 10.0 undecidable manual SN 71 0.0119 -1.71 0
--.FO1.Z. 1985-04-23T06:39:07.00 10.0 undecidable manual PN 63 0.0202 1.5 0.1
--.CTI.Z. 1985-04-23T06:38:53.00 10.0 undecidable manual PN 71 0.0119 0.19 1.4
--.SAL.Z. 1985-04-23T06:38:46.00 10.0 undecidable manual SG 93 0.0043 0.03 0.6
--.VAI.Z. 1985-04-23T06:38:44.00 10.0 undecidable manual PG 287 0.007 -0.06 3.1
--.SAL.Z. 1985-04-23T06:38:37.80 10.0 undecidable manual PG 93 0.0043 -0.73 0.9
--.BG1.Z. 1985-04-23T06:38:35.60 10.0 undecidable manual SG 326 0.0015 0.3 0.6
--.BG1.Z. 1985-04-23T06:38:32.00 10.0 undecidable manual PG 326 0.0015 -0.37 1.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download