Earthquake with magnitude of Md 2.4 on date 23-02-1985 and time 22:00:48 (Italy) in region 7 km E Pizzoli (AQ)

A magnitude Md 2.4 earthquake occured in region: 7 km E Pizzoli (AQ), on

  • 23-02-1985 21:00:48 (UTC)
  • 23-02-1985 22:00:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.45, 13.38 at 19 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
Pizzoli AQ 7 4326 4326
Barete AQ 8 737 5063
Capitignano AQ 10 665 5728
L'Aquila AQ 11 69753 75481
Campotosto AQ 12 542 76023
Cagnano Amiterno AQ 13 1369 77392
Scoppito AQ 13 3727 81119
Montereale AQ 14 2581 83700
Crognaleto TE 14 1297 84997
Pietracamela TE 17 271 85268
Lucoli AQ 18 1011 86279
Fano Adriano TE 18 296 86575
Tornimparte AQ 18 3187 89762
Fossa AQ 19 721 90483
Poggio Picenze AQ 19 1136 91619
Ocre AQ 20 1167 92786

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km N of L'Aquila (69753 inhabitants)
36 Km SW of Teramo (54892 inhabitants)
61 Km E of Terni (111501 inhabitants)
64 Km W of Montesilvano (53738 inhabitants)
66 Km W of Chieti (51815 inhabitants)
69 Km W of Pescara (121014 inhabitants)
72 Km NE of Tivoli (56533 inhabitants)
73 Km NE of Guidonia Montecelio (88673 inhabitants)
79 Km SE of Foligno (57155 inhabitants)
96 Km NE of Roma (2864731 inhabitants)
98 Km NE of Velletri (53303 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
Rev 1000 Md 2.4 1985-02-23
21:00:48
42.45 13.38 19 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 2319
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-23 21:00:48 ± 0.248
Latitude 42.45 ± 0.02
Longitude 13.38 ± 0.04
Depth (km) 19 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2319

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) 3912.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 169
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.00729
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 2319
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:07:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AS1.Z. 1985-02-23T21:01:17.20 10.0 undecidable manual SN 319 0.0073 0.74 0.3
--.CM8.Z. 1985-02-23T21:01:15.90 10.0 undecidable manual SG 347 0.0069 0.93 0.2
--.AS1.Z. 1985-02-23T21:01:05.00 10.0 undecidable manual PN 319 0.0073 0.45 1
--.SD1.Z. 1985-02-23T21:01:04.50 10.0 undecidable manual PG 156 0.0072 0.13 1.3
--.CM8.Z. 1985-02-23T21:01:03.00 10.0 undecidable manual PG 347 0.0069 -0.69 1.2
--.PO9.Z. 1985-02-23T21:01:01.50 10.0 undecidable manual SG 291 0.0031 -0.23 0.6
--.PO9.Z. 1985-02-23T21:00:55.50 10.0 undecidable manual PG 291 0.0031 -0.54 1
--.AQU.Z. 1985-02-23T21:00:54.50 10.0 undecidable manual SG 169 0.0008 -0.59 0.4
--.AQU.Z. 1985-02-23T21:00:52.50 10.0 undecidable manual PG 169 0.0008 0.29 2.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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