Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 3.3 on date 22-02-1985 and time 14:55:33 (Italy) in region 1 km E Pizzoli (AQ)

A magnitude Md 3.3 earthquake occured in region: 1 km E Pizzoli (AQ), on

  • 22-02-1985 13:55:33 (UTC)
  • 22-02-1985 14:55:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.43, 13.31 at 7 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.

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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 1 4326 4326
Barete AQ 3 737 5063
Cagnano Amiterno AQ 8 1369 6432
Scoppito AQ 8 3727 10159
Capitignano AQ 10 665 10824
L'Aquila AQ 12 69753 80577
Montereale AQ 12 2581 83158
Campotosto AQ 15 542 83700
Tornimparte AQ 16 3187 86887
Lucoli AQ 16 1011 87898
Borbona RI 17 617 88515
Crognaleto TE 19 1297 89812
Antrodoco RI 19 2588 92400

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km NW of L'Aquila (69753 inhabitants)
41 Km SW of Teramo (54892 inhabitants)
56 Km E of Terni (111501 inhabitants)
67 Km NE of Tivoli (56533 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
71 Km W of Chieti (51815 inhabitants)
74 Km W of Pescara (121014 inhabitants)
77 Km SE of Foligno (57155 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
94 Km NE of Velletri (53303 inhabitants)
99 Km E of Viterbo (67173 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 3.3 1985-02-22
13:55:33		 42.43 13.31 7 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 2189
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-22 13:55:33 ± 0.395
Latitude 42.43 ± 0.02
Longitude 13.31 ± 0.03
Depth (km) 7 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2189

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) 2822.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00089
Epicentral distance of station farthest from the epicenter (degree) 0.03942
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitude information

Md:3.3

Field Value
Value 3.3
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 2189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:07:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1985-02-22T13:57:14.00 10.0 undecidable manual SN 342 0.0342 -1.2 0.3
--.TTG.Z. 1985-02-22T13:56:41.40 10.0 undecidable manual PN 88 0.0394 1.18 0.6
--.FO1.Z. 1985-02-22T13:56:37.30 10.0 undecidable manual PN 355 0.0376 0 1.1
--.RNI.Z. 1985-02-22T13:56:36.20 10.0 undecidable manual PN 332 0.0362 0.91 0.8
--.CAV.Z. 1985-02-22T13:56:36.20 10.0 undecidable manual PN 341 0.0367 0.24 1.1
--.PAG.Z. 1985-02-22T13:56:36.10 10.0 undecidable manual PN 337 0.0363 0.61 0.9
--.RBL.Z. 1985-02-22T13:56:34.50 10.0 undecidable manual PN 2 0.036 -0.53 1
--.BAL.Z. 1985-02-22T13:56:33.30 10.0 undecidable manual PN 333 0.034 1.44 0.5
--.PAN.Z. 1985-02-22T13:56:33.70 10.0 undecidable manual PN 339 0.035 0.34 1.1
--.CTI.Z. 1985-02-22T13:56:32.20 10.0 undecidable manual PN 342 0.0342 0 1.1
--.DDS.Z. 1985-02-22T13:56:32.80 10.0 undecidable manual PN 336 0.0338 1.12 0.7
--.VOY.Z. 1985-02-22T13:56:31.00 10.0 undecidable manual PN 6 0.0325 1.31 0.6
--.SAL.Z. 1985-02-22T13:56:30.00 10.0 undecidable manual PN? 328 0.0338 -1.48 0.2
--.BD1.Z. 1985-02-22T13:56:16.00 10.0 undecidable manual PN 310 0.023 0.87 1.1
--.SGO.Z. 1985-02-22T13:56:13.00 10.0 undecidable manual PN 140 0.0215 0.13 1.5
--.PRG.Z. 1985-02-22T13:56:10.00 10.0 undecidable manual SG? 315 0.0085 3.66 0
--.AR1.Z. 1985-02-22T13:56:09.50 10.0 undecidable manual SN 345 0.0099 -1.39 0.3
--.TR9.Z. 1985-02-22T13:56:07.20 10.0 undecidable manual PN 133 0.0179 -0.13 1.6
--.PRO.Z. 1985-02-22T13:56:02.80 10.0 undecidable manual PN 348 0.0136 1.98 0.4
--.CH1.Z. 1985-02-22T13:56:02.00 10.0 undecidable manual PN? 320 0.0139 0.67 0.5
--.MA1.Z. 1985-02-22T13:56:01.40 10.0 undecidable manual PN? 270 0.0142 -0.43 0.6
--.SD1.Z. 1985-02-22T13:56:01.50 10.0 undecidable manual SG 152 0.0073 -0.52 0.9
--.AS1.Z. 1985-02-22T13:56:00.50 10.0 undecidable manual SG 322 0.0071 -0.92 0.7
--.SGG.Z. 1985-02-22T13:55:59.10 10.0 undecidable manual PN 142 0.0117 1.1 1
--.CM8.Z. 1985-02-22T13:55:59.80 10.0 undecidable manual SG 350 0.0069 -0.91 0.7
--.PRG.Z. 1985-02-22T13:55:56.00 10.0 undecidable manual PG? 315 0.0085 3.56 0
--.DUI.Z. 1985-02-22T13:55:55.50 10.0 undecidable manual PN 131 0.0103 -0.27 1.6
--.AR1.Z. 1985-02-22T13:55:54.50 10.0 undecidable manual PN 345 0.0099 -0.57 1.4
--.MNS.Z. 1985-02-22T13:55:50.50 10.0 undecidable manual SG 264 0.0041 -0.45 0.9
--.SD1.Z. 1985-02-22T13:55:49.00 10.0 undecidable manual PG 152 0.0073 -0.95 1.1
--.AS1.Z. 1985-02-22T13:55:49.50 10.0 undecidable manual PG 322 0.0071 -0.1 1.6
--.RDP.Z. 1985-02-22T13:55:49.80 10.0 positive manual PG 213 0.0072 -0.02 3.2
--.PO9.Z. 1985-02-22T13:55:47.20 10.0 undecidable manual SG 297 0.0028 1.69 0.3
--.CM8.Z. 1985-02-22T13:55:46.40 10.0 positive manual PG 350 0.0069 -2.79 0.2
--.MNS.Z. 1985-02-22T13:55:42.50 10.0 positive manual PG 264 0.0041 -1.06 2.1
--.PO9.Z. 1985-02-22T13:55:40.50 10.0 positive manual PG 297 0.0028 0.09 3.2
--.AQU.Z. 1985-02-22T13:55:35.50 10.0 positive manual PG 139 0.0009 -0.64 1.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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