Earthquake with magnitude of Md 2.3 on date 26-10-1997 and time 02:21:56 (Italy) in region 3 km NE Cagnano Amiterno (AQ)

A magnitude Md 2.3 earthquake occured in region: 3 km NE Cagnano Amiterno (AQ), on

  • 26-10-1997 01:21:56 (UTC)
  • 26-10-1997 02:21:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4820, 13.2560 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
Cagnano Amiterno AQ 4 1369 1369
Barete AQ 4 737 2106
Montereale AQ 5 2581 4687
Capitignano AQ 6 665 5352
Pizzoli AQ 6 4326 9678
Borbona RI 11 617 10295
Scoppito AQ 12 3727 14022
Campotosto AQ 13 542 14564
Posta RI 14 694 15258
Antrodoco RI 16 2588 17846
Amatrice RI 17 2657 20503
Micigliano RI 17 127 20630
Cittareale RI 17 482 21112
Borgo Velino RI 18 972 22084
L'Aquila AQ 19 69753 91837
Crognaleto TE 20 1297 93134

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NW of L'Aquila (69753 inhabitants)
42 Km W of Teramo (54892 inhabitants)
51 Km E of Terni (111501 inhabitants)
69 Km NE of Tivoli (56533 inhabitants)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
69 Km SE of Foligno (57155 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
76 Km W of Chieti (51815 inhabitants)
79 Km W of Pescara (121014 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
97 Km NE of Velletri (53303 inhabitants)
99 Km SE 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 2.3 1997-10-26
01:21:56
42.482 13.256 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 306139
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-26 01:21:56 ± 0.164
Latitude 42.4820 ± 0.0096
Longitude 13.2560 ± 0.0159
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 306139

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) 1689.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 156
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00146
Epicentral distance of station farthest from the epicenter (degree) 0.00421
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 306139
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:47:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.PQ9.Z. 1997-10-26T01:22:12.98 10.0 undecidable manual SG 166 0.4662 -0.59 0.3
--.MNS.Z. 1997-10-26T01:22:12.54 10.0 undecidable manual SG 257 0.4329 0.17 0.7
--.NRCA.Z. 1997-10-26T01:22:09.77 10.0 undecidable manual SG 343 0.3552 -0.38 0.5
--.MNS.Z. 1997-10-26T01:22:05.91 10.0 undecidable manual PG 257 0.4329 0.25 1.6
--.PQ9.Z. 1997-10-26T01:22:05.81 10.0 undecidable manual PG 166 0.4662 -0.54 0.8
--.AQU.Z. 1997-10-26T01:22:04.50 10.0 undecidable manual SG 139 0.1665 0.71 0.2
--.NRCA.Z. 1997-10-26T01:22:04.40 10.0 undecidable manual PG 343 0.3552 0.02 2.2
--.AQU.Z. 1997-10-26T01:22:01.00 10.0 undecidable manual PG 139 0.1665 0.3 1.7
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