Earthquake with magnitude of Md 2.1 on date 06-10-1988 and time 17:12:51 (Italy) in region 4 km E Cittareale (RI)

A magnitude Md 2.1 earthquake occured in region: 4 km E Cittareale (RI), on

  • 06-10-1988 16:12:51 (UTC)
  • 06-10-1988 17:12:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.62, 13.21 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
Cittareale RI 4 482 482
Amatrice RI 7 2657 3139
Accumoli RI 9 667 3806
Montereale AQ 11 2581 6387
Capitignano AQ 13 665 7052
Borbona RI 13 617 7669
Posta RI 14 694 8363
Campotosto AQ 15 542 8905
Cagnano Amiterno AQ 18 1369 10274
Arquata del Tronto AP 19 1178 11452
Barete AQ 19 737 12189
Cascia PG 20 3217 15406

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of L'Aquila (69753 inhabitants)
41 Km W of Teramo (54892 inhabitants)
46 Km E of Terni (111501 inhabitants)
56 Km SE of Foligno (57155 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
79 Km NE of Guidonia Montecelio (88673 inhabitants)
80 Km NE of Tivoli (56533 inhabitants)
84 Km W of Chieti (51815 inhabitants)
84 Km W of Pescara (121014 inhabitants)
86 Km SE of Perugia (166134 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
100 Km NE of Roma (2864731 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 2.1 1988-10-06
16:12:51
42.62 13.21 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 78329
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-10-06 16:12:51 ± 0.345
Latitude 42.62 ± 0.02
Longitude 13.21 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 78329

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) 3435.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00275
Epicentral distance of station farthest from the epicenter (degree) 0.00809
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:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 78329
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:13:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1988-10-06T16:13:24.00 10.0 undecidable manual SG 347 0.0081 1.39 0.1
--.CM8.Z. 1988-10-06T16:13:11.59 10.0 undecidable manual SG 355 0.0052 -0.65 0.7
--.ASS.Z. 1988-10-06T16:13:11.78 10.0 undecidable manual SG 317 0.0054 -1.26 0.2
--.ARV.Z. 1988-10-06T16:13:11.14 10.0 undecidable manual PG 347 0.0081 1.58 0.2
--.MNS.Z. 1988-10-06T16:13:08.82 10.0 undecidable manual SG 239 0.004 0.61 0.5
--.ALP.Z. 1988-10-06T16:13:03.53 10.0 undecidable manual SG 58 0.0028 -0.02 1
--.ASS.Z. 1988-10-06T16:13:03.73 10.0 undecidable manual PG 317 0.0054 -0.3 1.5
--.CM8.Z. 1988-10-06T16:13:02.84 10.0 undecidable manual PG 355 0.0052 -0.73 1.1
--.MNS.Z. 1988-10-06T16:13:01.11 10.0 positive manual PG 239 0.004 -0.13 3.3
--.ALP.Z. 1988-10-06T16:12:58.31 10.0 undecidable manual PG 58 0.0028 -0.25 1.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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