Earthquake with magnitude of Md 2.7 on date 04-09-1988 and time 03:47:40 (Italy) in region 7 km W Montegallo (AP)

A magnitude Md 2.7 earthquake occured in region: 7 km W Montegallo (AP), on

  • 04-09-1988 01:47:40 (UTC)
  • 04-09-1988 03:47:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.85, 13.25 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Montegallo AP 7 523 523
Montemonaco AP 8 604 1127
Castelsantangelo sul Nera MC 9 281 1408
Arquata del Tronto AP 10 1178 2586
Montefortino FM 13 1178 3764
Ussita MC 13 444 4208
Norcia PG 14 4957 9165
Visso MC 16 1107 10272
Bolognola MC 16 142 10414
Acquasanta Terme AP 16 2916 13330
Amandola FM 17 3629 16959
Preci PG 17 724 17683
Accumoli RI 18 667 18350
Comunanza AP 18 3166 21516
Palmiano AP 18 196 21712
Roccafluvione AP 19 2010 23722

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km NW of Teramo (54892 inhabitants)
46 Km E of Foligno (57155 inhabitants)
57 Km N of L'Aquila (69753 inhabitants)
59 Km NE of Terni (111501 inhabitants)
75 Km E of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
88 Km S of Ancona (100861 inhabitants)
90 Km W of Pescara (121014 inhabitants)
94 Km NW of Chieti (51815 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 2.7
ML-VAX 2.2
1988-09-04
01:47:40
42.85 13.25 7 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 76749
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-09-04 01:47:40 ± 0.487
Latitude 42.85 ± 0.01
Longitude 13.25 ± 0.02
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 76749

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) 2292.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 144
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
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) 0.00429
Epicentral distance of station farthest from the epicenter (degree) 0.01578
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 10
Type of magnitude Md
Reference to an origin 76749
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:12:17

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 7
Type of magnitude ML
Reference to an origin 76749
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
--.CRE.Z. 1988-09-04T01:48:20.19 10.0 undecidable manual SN 309 0.0109 -0.07 0.6
--.RMP.Z. 1988-09-04T01:48:17.39 10.0 undecidable manual SN 201 0.01 -0.56 0.4
--.CP9.Z. 1988-09-04T01:48:15.94 10.0 undecidable manual SG 192 0.0091 0.75 0.3
--.FG2.Z. 1988-09-04T01:48:11.24 10.0 undecidable manual PN 126 0.0158 0.44 1
--.AZI.Z. 1988-09-04T01:48:10.38 10.0 undecidable manual SG 170 0.0079 -0.4 0.6
--.PGD.Z. 1988-09-04T01:48:08.00 10.0 undecidable manual PN 313 0.0135 0.67 0.7
--.RSM.Z. 1988-09-04T01:48:04.90 10.0 undecidable manual PN 332 0.0109 0.71 0.8
--.ARV.Z. 1988-09-04T01:48:03.33 10.0 undecidable manual SG 341 0.0061 -1.13 0.1
--.RDP.Z. 1988-09-04T01:48:03.43 10.0 undecidable manual PN 199 0.0104 0.82 0.6
--.CRE.Z. 1988-09-04T01:48:03.96 10.0 undecidable manual PN 309 0.0109 0.64 0.9
--.SDI.Z. 1988-09-04T01:48:02.40 10.0 undecidable manual PN 159 0.0109 -0.96 0.4
--.RMP.Z. 1988-09-04T01:48:01.85 10.0 undecidable manual PN 201 0.01 -0.13 1.7
--.MNS.Z. 1988-09-04T01:48:01.86 10.0 undecidable manual SG 221 0.0056 -0.88 0.2
--.CP9.Z. 1988-09-04T01:48:00.30 10.0 undecidable manual PG 192 0.0091 -0.09 1.8
--.AQU.Z. 1988-09-04T01:47:59.27 10.0 undecidable manual SG 167 0.0046 0.21 0.7
--.AZI.Z. 1988-09-04T01:47:58.20 10.0 undecidable manual PG 170 0.0079 0.36 1.5
--.ASS.Z. 1988-09-04T01:47:57.41 10.0 undecidable manual SG 295 0.0043 -0.67 0.4
--.MNS.Z. 1988-09-04T01:47:53.31 10.0 positive manual PG 221 0.0056 0.11 3.6
--.ARV.Z. 1988-09-04T01:47:53.59 10.0 positive manual PG 341 0.0061 -0.6 2.2
--.ASS.Z. 1988-09-04T01:47:50.78 10.0 undecidable manual PG 295 0.0043 0.27 1.7
--.AQU.Z. 1988-09-04T01:47:50.31 10.0 undecidable manual PG 167 0.0046 -0.77 0.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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