Earthquake with magnitude of Md 1.9 on date 12-12-1988 and time 14:37:42 (Italy) in region 5 km N Posta (RI)

A magnitude Md 1.9 earthquake occured in region: 5 km N Posta (RI), on

  • 12-12-1988 13:37:42 (UTC)
  • 12-12-1988 14:37:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.57, 13.09 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
Posta RI 5 694 694
Borbona RI 7 617 1311
Cittareale RI 8 482 1793
Leonessa RI 10 2435 4228
Micigliano RI 13 127 4355
Montereale AQ 14 2581 6936
Monteleone di Spoleto PG 15 599 7535
Cagnano Amiterno AQ 16 1369 8904
Antrodoco RI 17 2588 11492
Amatrice RI 18 2657 14149
Capitignano AQ 18 665 14814
Cascia PG 18 3217 18031
Borgo Velino RI 18 972 19003
Poggio Bustone RI 18 2055 21058
Cantalice RI 19 2755 23813
Accumoli RI 19 667 24480
Castel Sant'Angelo RI 20 1308 25788

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of L'Aquila (69753 inhabitants)
36 Km E of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
54 Km SE of Foligno (57155 inhabitants)
70 Km NE of Guidonia Montecelio (88673 inhabitants)
71 Km NE of Tivoli (56533 inhabitants)
83 Km E of Viterbo (67173 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
90 Km NE of Roma (2864731 inhabitants)
92 Km W of Chieti (51815 inhabitants)
93 Km W of Pescara (121014 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 1.9 1988-12-12
13:37:42
42.57 13.09 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 83109
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-12-12 13:37:42 ± 0.489
Latitude 42.57 ± 0.02
Longitude 13.09 ± 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 83109

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) 3797.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 193
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) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00275
Epicentral distance of station farthest from the epicenter (degree) 0.00559
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:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 83109
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:18:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CIO.Z. 1988-12-12T13:38:03.50 10.0 undecidable manual SG 3 0.0056 -1.11 0.5
--.ASS.Z. 1988-12-12T13:38:03.40 10.0 undecidable manual SG 327 0.0053 -0.01 0.8
--.ALP.Z. 1988-12-12T13:37:58.10 10.0 undecidable manual SG 58 0.0036 0.53 1.1
--.SS8.Z. 1988-12-12T13:37:57.50 10.0 undecidable manual SG 13 0.004 -1.42 0.2
--.AQU.Z. 1988-12-12T13:37:55.00 10.0 undecidable manual SG 133 0.0028 0.49 0.7
--.CIO.Z. 1988-12-12T13:37:55.30 10.0 undecidable manual PG 3 0.0056 0.01 1.8
--.ASS.Z. 1988-12-12T13:37:55.40 10.0 undecidable manual PG 327 0.0053 0.8 1.2
--.ALP.Z. 1988-12-12T13:37:52.40 10.0 undecidable manual PG 58 0.0036 1.17 0.8
--.SS8.Z. 1988-12-12T13:37:51.90 10.0 undecidable manual PG 13 0.004 -0.1 2.1
--.AQU.Z. 1988-12-12T13:37:48.20 10.0 undecidable manual PG 133 0.0028 -1.25 0.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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