A magnitude Md 2.5 earthquake occured in region: Confine Italia Svizzera (SVIZZERA), on
and geographic coordinates (lat, lon) 46.1140, 7.9350 at 5 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 |
---|---|---|---|---|
Antrona Schieranco | VB | 15 | 428 | 428 |
Macugnaga | VB | 16 | 557 | 985 |
Ceppo Morelli | VB | 19 | 321 | 1306 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.5
ML-VAX 1.6 |
1987-09-21 19:09:09 |
46.114 | 7.935 | 5 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 55819 |
Field | Value |
---|---|
Time (UTC) | 1987-09-21 19:09:09 ± 0.148 |
Latitude | 46.1140 ± 0.0087 |
Longitude | 7.9350 ± 0.0180 |
Depth (km) | 5 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 55819 |
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) | 1691.2 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 136 |
Number of associated phases, regardless of their use for origin computation | 6 |
Number of defining phases | 6 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.2 |
Epicentral distance of station closest to the epicenter (degree) | 0.00437 |
Epicentral distance of station farthest from the epicenter (degree) | 0.01538 |
Number of stations at which the event was observed | 4 |
Number of stations from which data was used for origin computation | 4 |
Field | Value |
---|---|
Value | 2.5 |
Uncertainty | |
Num. used stations | 3 |
Type of magnitude | Md |
Reference to an origin | 55819 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:53:40 |
Field | Value |
---|---|
Value | 1.6 |
Uncertainty | |
Num. used stations | 3 |
Type of magnitude | ML |
Reference to an origin | 55819 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2015-04-28 13:07:13 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.ROF.Z. | 1987-09-21T19:09:40.00 | 10.0 | undecidable | manual | PN | 336 | 1.7094 | 0.17 | 1.2 | |
--.BNI.Z. | 1987-09-21T19:09:34.95 | 10.0 | undecidable | manual | PN | 220 | 1.3764 | -0.22 | 1.3 | |
--.VAI.Z. | 1987-09-21T19:09:33.00 | 10.0 | undecidable | manual | SG | 112 | 0.6327 | 0.46 | 0.2 | |
--.ORO.Z. | 1987-09-21T19:09:28.00 | 10.0 | undecidable | manual | SG | 176 | 0.4884 | 0.07 | 0.9 | |
--.VAI.Z. | 1987-09-21T19:09:22.37 | 10.0 | undecidable | manual | PG | 112 | 0.6327 | -0.4 | 0.8 | |
--.ORO.Z. | 1987-09-21T19:09:20.32 | 10.0 | undecidable | manual | PG | 176 | 0.4884 | 0.21 | 1.6 |