Earthquake with magnitude of Md 3.5 on date 25-10-1997 and time 21:48:53 (Italy) in region 3 km NW Cagnano Amiterno (AQ)

A magnitude Md 3.5 earthquake occured in region: 3 km NW Cagnano Amiterno (AQ), on

  • 25-10-1997 19:48:53 (UTC)
  • 25-10-1997 21:48:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.48, 13.21 at 3 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 3 1369 1369
Montereale AQ 6 2581 3950
Borbona RI 7 617 4567
Barete AQ 7 737 5304
Capitignano AQ 9 665 5969
Pizzoli AQ 9 4326 10295
Posta RI 10 694 10989
Antrodoco RI 13 2588 13577
Micigliano RI 13 127 13704
Scoppito AQ 13 3727 17431
Borgo Velino RI 15 972 18403
Cittareale RI 15 482 18885
Campotosto AQ 16 542 19427
Castel Sant'Angelo RI 18 1308 20735
Amatrice RI 18 2657 23392

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NW of L'Aquila (69753 inhabitants)
45 Km W of Teramo (54892 inhabitants)
47 Km E of Terni (111501 inhabitants)
67 Km NE of Guidonia Montecelio (88673 inhabitants)
67 Km SE of Foligno (57155 inhabitants)
67 Km NE of Tivoli (56533 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
80 Km W of Chieti (51815 inhabitants)
83 Km W of Pescara (121014 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
95 Km NE of Velletri (53303 inhabitants)
96 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 3.5
ML-VAX 2.5
1997-10-25
19:48:53
42.48 13.21 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 305969
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-25 19:48:53 ± 0.226
Latitude 42.48 ± 0.01
Longitude 13.21 ± 0.02
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 305969

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) 2091
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.0017
Epicentral distance of station farthest from the epicenter (degree) 0.01554
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 305969
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:47:14

ML:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 305969
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FB9.Z. 1997-10-25T19:49:35.36 10.0 undecidable manual SN 345 0.0112 -0.73 0.3
--.ARV.Z. 1997-10-25T19:49:29.63 10.0 undecidable manual SG 349 0.0092 -0.77 0.4
--.SFI.Z. 1997-10-25T19:49:25.55 10.0 undecidable manual PN 325 0.0155 0.63 0.8
--.SDI.Z. 1997-10-25T19:49:25.67 10.0 undecidable manual SG 149 0.008 -0.3 0.6
--.VTB1.Z. 1997-10-25T19:49:25.34 10.0 undecidable manual PN 140 0.0151 1.16 0.3
--.CSNT.Z. 1997-10-25T19:49:25.97 10.0 undecidable manual PN 305 0.0154 1.27 0.3
--.FG2.Z. 1997-10-25T19:49:24.38 10.0 undecidable manual PN 114 0.0143 1.28 0.3
--.MAB1.Z. 1997-10-25T19:49:22.54 10.0 undecidable manual PN 141 0.0139 0.03 1.2
--.BAI2.Z. 1997-10-25T19:49:21.18 10.0 undecidable manual PN 133 0.0125 0.86 0.7
--.SNTG.Z. 1997-10-25T19:49:21.35 10.0 undecidable manual SG 345 0.0071 -1.43 0.1
--.CRE.Z. 1997-10-25T19:49:21.34 10.0 undecidable manual PN 321 0.0131 0.15 1.2
--.FB9.Z. 1997-10-25T19:49:17.98 10.0 undecidable manual PN 345 0.0112 -0.31 1.2
--.PLI2.Z. 1997-10-25T19:49:16.38 10.0 undecidable manual PN 146 0.0103 -0.46 1.2
--.ARV.Z. 1997-10-25T19:49:13.93 10.0 undecidable manual PG 349 0.0092 -1.08 0.5
--.SDI.Z. 1997-10-25T19:49:12.15 10.0 undecidable manual PG 149 0.008 -0.3 1.4
--.RDP.Z. 1997-10-25T19:49:10.46 10.0 undecidable manual PG 206 0.0073 -0.45 1.3
--.RMP.Z. 1997-10-25T19:49:09.51 10.0 undecidable manual PG 209 0.0069 -0.63 1.1
--.ASS.Z. 1997-10-25T19:49:09.17 10.0 undecidable manual PG 325 0.0063 0.2 1.5
--.SNTG.Z. 1997-10-25T19:49:09.80 10.0 negative manual PG 345 0.0071 -0.8 1.7
--.MNS.Z. 1997-10-25T19:49:08.50 10.0 undecidable manual SG 255 0.0036 -0.94 0.3
--.NRCA.Z. 1997-10-25T19:49:08.50 10.0 undecidable manual SG 348 0.0032 0.78 0.4
--.MNS.Z. 1997-10-25T19:49:03.70 10.0 positive manual PG 255 0.0036 0.8 1.7
--.PQ9.Z. 1997-10-25T19:49:03.69 10.0 positive manual PG 162 0.0043 -1.05 1.2
--.NRCA.Z. 1997-10-25T19:49:02.30 10.0 positive manual PG 348 0.0032 0.39 2.7
--.AQU.Z. 1997-10-25T19:48:58.50 10.0 negative manual PG 132 0.0017 0.19 2.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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