Earthquake with magnitude of Md 2.4 on date 09-02-1997 and time 21:03:06 (Italy) in region 3 km SW Acquasanta Terme (AP)

A magnitude Md 2.4 earthquake occured in region: 3 km SW Acquasanta Terme (AP), on

  • 09-02-1997 20:03:06 (UTC)
  • 09-02-1997 21:03:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7570, 13.3820 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
Acquasanta Terme AP 3 2916 2916
Arquata del Tronto AP 7 1178 4094
Valle Castellana TE 10 977 5071
Montegallo AP 10 523 5594
Accumoli RI 13 667 6261
Roccafluvione AP 14 2010 8271
Rocca Santa Maria TE 14 537 8808
Amatrice RI 16 2657 11465
Montemonaco AP 17 604 12069
Venarotta AP 17 2066 14135
Palmiano AP 17 196 14331
Cortino TE 18 656 14987
Ascoli Piceno AP 19 49407 64394

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km W of Teramo (54892 inhabitants)
45 Km N of L'Aquila (69753 inhabitants)
60 Km E of Foligno (57155 inhabitants)
64 Km E of Terni (111501 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
75 Km W of Pescara (121014 inhabitants)
79 Km NW of Chieti (51815 inhabitants)
90 Km E of Perugia (166134 inhabitants)
96 Km S of Ancona (100861 inhabitants)
100 Km NE of Guidonia Montecelio (88673 inhabitants)
100 Km NE of Tivoli (56533 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 1997-02-09
20:03:06
42.757 13.382 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 260889
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-02-09 20:03:06 ± 0.358
Latitude 42.7570 ± 0.0146
Longitude 13.3820 ± 0.0390
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 260889

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) 3573.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 188
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.00356
Epicentral distance of station farthest from the epicenter (degree) 0.00979
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 260889
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:06:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FB9.Z. 1997-02-09T20:03:41.43 10.0 undecidable manual SN 334 1.0212 -0.28 0.6
--.SDI.Z. 1997-02-09T20:03:29.12 10.0 undecidable manual PN 163 1.0878 1.37 0.5
--.MNS.Z. 1997-02-09T20:03:29.41 10.0 undecidable manual SG 234 0.6327 0.38 0.6
--.FB9.Z. 1997-02-09T20:03:26.99 10.0 undecidable manual PN 334 1.0212 0.09 1.8
--.AQU.Z. 1997-02-09T20:03:21.47 10.0 undecidable manual SG 177 0.3996 -0.07 0.8
--.MNS.Z. 1997-02-09T20:03:19.48 10.0 undecidable manual PG 234 0.6327 -0.1 2.1
--.AQU.Z. 1997-02-09T20:03:14.43 10.0 undecidable manual PG 177 0.3996 -0.83 0.7
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