Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of M 2.1 on date 10-09-1993 and time 05:06:51 (Italy) in region 1 km SE Ponzone (AL)

A magnitude M 2.1 earthquake occured in region: 1 km SE Ponzone (AL), on

  • 10-09-1993 03:06:51 (UTC)
  • 10-09-1993 05:06:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.5780, 8.4700 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ponzone AL 1 1051 1051
Cartosio AL 4 747 1798
Morbello AL 4 402 2200
Malvicino AL 5 85 2285
Cavatore AL 6 291 2576
Grognardo AL 6 259 2835
Montechiaro d'Acqui AL 7 560 3395
Cassinelle AL 8 914 4309
Castelletto d'Erro AL 8 148 4457
Melazzo AL 8 1325 5782
Pareto AL 10 554 6336
Visone AL 10 1194 7530
Prasco AL 10 521 8051
Ponti AL 10 606 8657
Mioglia SV 11 526 9183
Sassello SV 11 1777 10960
Denice AL 11 176 11136
Terzo AL 11 923 12059
Acqui Terme AL 11 19896 31955
Mombaldone AT 11 209 32164
Spigno Monferrato AL 11 1050 33214
Cremolino AL 11 1086 34300
Molare AL 12 2181 36481
Morsasco AL 12 679 37160
Bistagno AL 12 1887 39047
Trisobbio AL 13 655 39702
Tiglieto GE 13 546 40248
Monastero Bormida AT 14 931 41179
Urbe SV 14 700 41879
Strevi AL 14 2019 43898
Orsara Bormida AL 15 424 44322
Sessame AT 15 271 44593
Pontinvrea SV 15 847 45440
Montabone AT 15 333 45773
Merana AL 15 189 45962
Montaldo Bormida AL 15 664 46626
Giusvalla SV 15 441 47067
Carpeneto AL 16 977 48044
Ovada AL 16 11477 59521
Roccaverano AT 16 399 59920
Rossiglione GE 16 2779 62699
Belforte Monferrato AL 16 515 63214
Rivalta Bormida AL 16 1446 64660
Castel Rocchero AT 16 395 65055
Piana Crixia SV 16 788 65843
Alice Bel Colle AL 17 766 66609
Serole AT 17 123 66732
Bubbio AT 17 893 67625
Tagliolo Monferrato AL 17 1581 69206
Ricaldone AL 17 684 69890
Castel Boglione AT 17 609 70499
Rocchetta Palafea AT 17 338 70837
Olmo Gentile AT 18 80 70917
Rocca Grimalda AL 18 1512 72429
Cassinasco AT 18 611 73040
San Giorgio Scarampi AT 18 122 73162
Campo Ligure GE 19 2955 76117
Dego SV 19 1985 78102
Quaranti AT 19 183 78285
Castelletto Molina AT 20 180 78465
Cessole AT 20 403 78868
Castelnuovo Bormida AL 20 694 79562
Loazzolo AT 20 359 79921
Cassine AL 20 2961 82882
Fontanile AT 20 567 83449

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km N of Savona (61345 inhabitants)
39 Km SW of Alessandria (93943 inhabitants)
41 Km W of Genova (586655 inhabitants)
42 Km SE of Asti (76202 inhabitants)
76 Km E of Cuneo (56081 inhabitants)
78 Km SE of Moncalieri (57294 inhabitants)
83 Km SE of Torino (890529 inhabitants)
87 Km SW of Pavia (72576 inhabitants)
88 Km SW of Vigevano (63310 inhabitants)
97 Km S of Novara (104380 inhabitants)
100 Km NE of Sanremo (54807 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 		M 2.1 1993-09-10
03:06:51		 44.578 8.47 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 196219
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-09-10 03:06:51 ± 0.294
Latitude 44.5780 ± 0.0319
Longitude 8.4700 ± 0.0110
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 196219

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) 3655.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 218
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00057
Epicentral distance of station farthest from the epicenter (degree) 0.00874
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

M:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 196219
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:48:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.PZZ.Z. 1993-09-10T03:07:24.70 10.0 undecidable manual SG 266 0.9657 -0.55 0.1
--.ENR.Z. 1993-09-10T03:07:20.10 10.0 undecidable manual SG 245 0.8214 -0.34 0.4
--.PZZ.Z. 1993-09-10T03:07:11.46 10.0 undecidable manual PG 266 0.9657 0.28 1.1
--.ROB.Z. 1993-09-10T03:07:10.60 10.0 undecidable manual SG 237 0.4995 0.44 0.3
--.ENR.Z. 1993-09-10T03:07:08.19 10.0 undecidable manual PG 245 0.8214 -0.21 1.5
--.ROB.Z. 1993-09-10T03:07:02.64 10.0 undecidable manual PG 237 0.4995 0.17 1.9
--.PCP.Z. 1993-09-10T03:06:55.90 10.0 undecidable manual SG 124 0.0666 -0.34 0.5
--.PCP.Z. 1993-09-10T03:06:54.50 10.0 undecidable manual PG 124 0.0666 0.07 2.3
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