Earthquake with magnitude of Md 2.1 on date 28-01-1988 and time 15:47:07 (UTC) in region 7 km SE Pieve Santo Stefano (AR)

A magnitude Md 2.1 earthquake occured in region: 7 km SE Pieve Santo Stefano (AR), on

  • 28-01-1988 15:47:07 (UTC)
  • 28-01-1988 16:47:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6280, 12.1010 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
Pieve Santo Stefano AR 7 3183 3183
Sansepolcro AR 7 15884 19067
Caprese Michelangelo AR 9 1426 20493
Anghiari AR 10 5638 26131
San Giustino PG 11 11297 37428
Badia Tedalda AR 11 1087 38515
Citerna PG 14 3531 42046
Chiusi della Verna AR 16 2023 44069
Monterchi AR 16 1757 45826
Borgo Pace PU 16 606 46432
Chitignano AR 18 899 47331
Sestino AR 18 1355 48686
Casteldelci RN 19 407 49093
Mercatello sul Metauro PU 19 1378 50471
Subbiano AR 19 6331 56802

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NE of Arezzo (99543 inhabitants)
58 Km S of Cesena (96758 inhabitants)
61 Km SW of Rimini (147750 inhabitants)
62 Km NW of Perugia (166134 inhabitants)
66 Km S of Forlì (117913 inhabitants)
70 Km E of Firenze (382808 inhabitants)
71 Km E of Siena (53903 inhabitants)
73 Km W of Pesaro (94582 inhabitants)
75 Km S of Faenza (58541 inhabitants)
75 Km E of Scandicci (50609 inhabitants)
78 Km W of Fano (60888 inhabitants)
85 Km E of Prato (191150 inhabitants)
86 Km SE of Imola (69797 inhabitants)
88 Km S of Ravenna (159116 inhabitants)
89 Km NW of Foligno (57155 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
Bulletin
Rev1000
Md 2.1
ML-VAX 1.5
1988-01-28
15:47:07
43.628 12.101 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 61809
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-01-28 15:47:07 ± 0.067
Latitude 43.6280 ± 0.0020
Longitude 12.1010 ± 0.0046
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 61809

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) 433.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 297
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0
Epicentral distance of station closest to the epicenter (degree) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.00332
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 61809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:58:49

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 61809
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(km) Takeoff_angle Residual Weight
--.SS9.Z. 1988-01-28T15:47:20.55 10.0 undecidable manual SG 328 0.3441 0.05 0.5
--.PGD.Z. 1988-01-28T15:47:15.45 10.0 undecidable manual PG 312 0.3663 -0.04 1.2
--.SS9.Z. 1988-01-28T15:47:15.20 10.0 undecidable manual PG 328 0.3441 0 1.3
--.CRE.Z. 1988-01-28T15:47:12.96 10.0 undecidable manual SG 265 0.111 -0.03 0.6
--.CRE.Z. 1988-01-28T15:47:10.72 10.0 undecidable manual PG 265 0.111 0.03 1.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download