Earthquake with magnitude of Md 2.4 on date 31-12-1988 and time 08:06:19 (Italy) in region 3 km W Castignano (AP)

A magnitude Md 2.4 earthquake occured in region: 3 km W Castignano (AP), on

  • 31-12-1988 07:06:19 (UTC)
  • 31-12-1988 08:06:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9310, 13.5840 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Castignano AP 3 2796 2796
Rotella AP 3 906 3702
Montedinove AP 5 488 4190
Montalto delle Marche AP 7 2122 6312
Appignano del Tronto AP 8 1785 8097
Force AP 8 1354 9451
Ascoli Piceno AP 9 49407 58858
Offida AP 9 5058 63916
Venarotta AP 9 2066 65982
Cossignano AP 10 978 66960
Montelparo FM 11 778 67738
Palmiano AP 11 196 67934
Monte Rinaldo FM 11 379 68313
Ortezzano FM 12 774 69087
Roccafluvione AP 12 2010 71097
Montefalcone Appennino FM 12 424 71521
Santa Vittoria in Matenano FM 12 1330 72851
Castorano AP 12 2380 75231
Castel di Lama AP 13 8634 83865
Folignano AP 13 9241 93106
Maltignano AP 14 2401 95507
Monteleone di Fermo FM 14 395 95902
Smerillo FM 14 365 96267
Monte Vidon Combatte FM 14 433 96700
Carassai AP 14 1100 97800
Comunanza AP 14 3166 100966
Colli del Tronto AP 15 3668 104634
Montottone FM 15 979 105613
Monsampietro Morico FM 16 659 106272
Sant'Egidio alla Vibrata TE 16 9811 116083
Spinetoli AP 16 7215 123298
Monte San Martino MC 16 765 124063
Petritoli FM 16 2335 126398
Ancarano TE 17 1857 128255
Ripatransone AP 17 4309 132564
Monsampolo del Tronto AP 17 4611 137175
Servigliano FM 18 2336 139511
Monte Giberto FM 18 801 140312
Belmonte Piceno FM 18 646 140958
Civitella del Tronto TE 19 5116 146074
Acquaviva Picena AP 19 3831 149905
Penna San Giovanni MC 19 1108 151013
Montefiore dell'Aso AP 19 2123 153136
Amandola FM 19 3629 156765
Montefortino FM 20 1178 157943
Torano Nuovo TE 20 1611 159554
Ponzano di Fermo FM 20 1674 161228

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of Teramo (54892 inhabitants)
65 Km NW of Montesilvano (53738 inhabitants)
66 Km N of L'Aquila (69753 inhabitants)
72 Km E of Foligno (57155 inhabitants)
73 Km NW of Pescara (121014 inhabitants)
77 Km S of Ancona (100861 inhabitants)
80 Km NW of Chieti (51815 inhabitants)
87 Km E of Terni (111501 inhabitants)
99 Km E of Perugia (166134 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
Md 2.4 1988-12-31
07:06:19
42.931 13.584 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 84399
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-12-31 07:06:19 ± 0.362
Latitude 42.9310 ± 0.0170
Longitude 13.5840 ± 0.0342
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 84399

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) 3361.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 183
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) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.00623
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 84399
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:19:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ASS.Z. 1988-12-31T07:06:43.80 10.0 undecidable manual SG 281 0.6882 -0.16 0.4
--.AOI.Z. 1988-12-31T07:06:43.30 10.0 undecidable manual SG 1 0.6105 1.77 0
--.CIO.Z. 1988-12-31T07:06:35.90 10.0 undecidable manual SG 309 0.4107 0.86 0.4
--.ASS.Z. 1988-12-31T07:06:33.20 10.0 undecidable manual PG 281 0.6882 -0.54 0.8
--.AOI.Z. 1988-12-31T07:06:31.80 10.0 undecidable manual PG 1 0.6105 -0.54 1.8
--.SS8.Z. 1988-12-31T07:06:30.30 10.0 undecidable manual SG 286 0.2553 -0.05 0.9
--.CIO.Z. 1988-12-31T07:06:27.90 10.0 undecidable manual PG 309 0.4107 -0.69 1.8
--.ALP.Z. 1988-12-31T07:06:27.30 10.0 undecidable manual SG 184 0.1443 0.76 0.5
--.SS8.Z. 1988-12-31T07:06:26.80 10.0 undecidable manual PG 286 0.2553 0.91 0.6
--.ALP.Z. 1988-12-31T07:06:23.50 10.0 undecidable manual PG 184 0.1443 -0.18 2.8
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