A magnitude Md 2.1 earthquake occured in region: 7 km NE Norcia (PG), on
and geographic coordinates (lat, lon) 42.8290, 13.1570 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 |
---|---|---|---|---|
Norcia | PG | 7 | 4957 | 4957 |
Castelsantangelo sul Nera | MC | 7 | 281 | 5238 |
Preci | PG | 11 | 724 | 5962 |
Visso | MC | 13 | 1107 | 7069 |
Ussita | MC | 13 | 444 | 7513 |
Arquata del Tronto | AP | 13 | 1178 | 8691 |
Montegallo | AP | 15 | 523 | 9214 |
Montemonaco | AP | 16 | 604 | 9818 |
Accumoli | RI | 17 | 667 | 10485 |
Cascia | PG | 17 | 3217 | 13702 |
Bolognola | MC | 19 | 142 | 13844 |
Cerreto di Spoleto | PG | 20 | 1075 | 14919 |
Montefortino | FM | 20 | 1178 | 16097 |
Sellano | PG | 20 | 1079 | 17176 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.1 | 1987-01-22 04:05:40 |
42.829 | 13.157 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 39629 |
Field | Value |
---|---|
Time (UTC) | 1987-01-22 04:05:40 ± 0.769 |
Latitude | 42.8290 ± 0.0442 |
Longitude | 13.1570 ± 0.0226 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 39629 |
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) | 5243.1 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 278 |
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) | 0.00389 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00704 |
Number of stations at which the event was observed | 3 |
Number of stations from which data was used for origin computation | 3 |
Field | Value |
---|---|
Value | 2.1 |
Uncertainty | |
Num. used stations | 2 |
Type of magnitude | Md |
Reference to an origin | 39629 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 17:39:40 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.AM8.Z. | 1987-01-22T04:06:07.30 | 10.0 | undecidable | manual | SG | 23 | 0.777 | -0.79 | 0.1 | |
--.ARV.Z. | 1987-01-22T04:06:05.50 | 10.0 | undecidable | manual | SG | 346 | 0.6882 | 0.67 | 0.2 | |
--.AM8.Z. | 1987-01-22T04:05:56.81 | 10.0 | undecidable | manual | PG | 23 | 0.777 | 0.23 | 2.2 | |
--.ASS.Z. | 1987-01-22T04:05:56.50 | 10.0 | undecidable | manual | SG | 302 | 0.4329 | -0.28 | 0.7 | |
--.ARV.Z. | 1987-01-22T04:05:54.50 | 10.0 | undecidable | manual | PG | 346 | 0.6882 | -0.19 | 1.3 | |
--.ASS.Z. | 1987-01-22T04:05:50.00 | 10.0 | undecidable | manual | PG | 302 | 0.4329 | -0.05 | 1.5 |