A magnitude Md 2.2 earthquake occured in region: 3 km SW Todi (PG), on
and geographic coordinates (lat, lon) 42.7690, 12.3830 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.
Municipality | Region | Distance (km) | Inhabitants | Cumulative Inhabitants |
---|---|---|---|---|
Todi | PG | 3 | 16851 | 16851 |
Monte Castello di Vibio | PG | 8 | 1567 | 18418 |
Fratta Todina | PG | 10 | 1839 | 20257 |
Massa Martana | PG | 12 | 3770 | 24027 |
Avigliano Umbro | TR | 13 | 2558 | 26585 |
Montecchio | TR | 14 | 1676 | 28261 |
San Venanzo | TR | 15 | 2218 | 30479 |
Collazzone | PG | 15 | 3473 | 33952 |
Montecastrilli | TR | 16 | 5022 | 38974 |
Acquasparta | TR | 16 | 4778 | 43752 |
Marsciano | PG | 16 | 18902 | 62654 |
Baschi | TR | 17 | 2722 | 65376 |
Giano dell'Umbria | PG | 18 | 3846 | 69222 |
Guardea | TR | 18 | 1836 | 71058 |
Castiglione in Teverina | VT | 20 | 2329 | 73387 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.2 | 1987-02-01 22:31:23 |
42.769 | 12.383 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 40179 |
Field | Value |
---|---|
Time (UTC) | 1987-02-01 22:31:23 ± 0.513 |
Latitude | 42.7690 ± 0.0216 |
Longitude | 12.3830 ± 0.0663 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 40179 |
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) | 5918.2 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 173 |
Number of associated phases, regardless of their use for origin computation | 7 |
Number of defining phases | 7 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.8 |
Epicentral distance of station closest to the epicenter (degree) | 0.00316 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00882 |
Number of stations at which the event was observed | 5 |
Number of stations from which data was used for origin computation | 5 |
Field | Value |
---|---|
Value | 2.2 |
Uncertainty | |
Num. used stations | 1 |
Type of magnitude | Md |
Reference to an origin | 40179 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:40:10 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.RMP.Z. | 1987-02-01T22:31:57.00 | 10.0 | undecidable | manual | SG | 166 | 0.9768 | -0.11 | 0.7 | |
--.ARV.Z. | 1987-02-01T22:31:53.00 | 10.0 | undecidable | manual | SG | 29 | 0.8214 | 0.7 | 0.6 | |
--.RMP.Z. | 1987-02-01T22:31:43.50 | 10.0 | undecidable | manual | PG | 166 | 0.9768 | 0.58 | 1.5 | |
--.ARV.Z. | 1987-02-01T22:31:42.00 | 10.0 | undecidable | manual | PG | 29 | 0.8214 | 1.85 | 0.5 | |
--.CRE.Z. | 1987-02-01T22:31:41.00 | 10.0 | undecidable | manual | PG | 340 | 0.8991 | -0.45 | 1.6 | |
--.AQU.Z. | 1987-02-01T22:31:40.00 | 10.0 | undecidable | manual | PG | 118 | 0.8547 | -0.54 | 1.6 | |
--.ASS.Z. | 1987-02-01T22:31:29.50 | 10.0 | undecidable | manual | PG | 34 | 0.3552 | -1.7 | 0.6 |