A magnitude Md 2.1 earthquake occured in region: 8 km SE Norcia (PG), on
and geographic coordinates (lat, lon) 42.7400, 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 | 8 | 4957 | 4957 |
Accumoli | RI | 9 | 667 | 5624 |
Cascia | PG | 12 | 3217 | 8841 |
Arquata del Tronto | AP | 12 | 1178 | 10019 |
Cittareale | RI | 14 | 482 | 10501 |
Amatrice | RI | 16 | 2657 | 13158 |
Castelsantangelo sul Nera | MC | 17 | 281 | 13439 |
Preci | PG | 18 | 724 | 14163 |
Poggiodomo | PG | 18 | 117 | 14280 |
Montegallo | AP | 18 | 523 | 14803 |
Monteleone di Spoleto | PG | 19 | 599 | 15402 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Bulletin Rev1000 |
Md 2.1 | 1988-12-20 02:53:45 |
42.74 | 13.157 | 10 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 83759 |
Field | Value |
---|---|
Time (UTC) | 1988-12-20 02:53:45 ± 0.033 |
Latitude | 42.7400 ± 0.0019 |
Longitude | 13.1570 ± 0.0033 |
Depth (km) | 10 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 1000 -> BULLETIN-VAX |
Event type | earthquake |
Origin ID | 83759 |
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) | 342.5 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 142 |
Number of associated phases, regardless of their use for origin computation | 8 |
Number of defining phases | 8 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.1 |
Epicentral distance of station closest to the epicenter (degree) | 0.00243 |
Epicentral distance of station farthest from the epicenter (degree) | 0.00445 |
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 | 2.1 |
Uncertainty | |
Num. used stations | 1 |
Type of magnitude | Md |
Reference to an origin | 83759 |
Agency | INGV |
Autore | Bollettino Sismico Italiano INGV |
Time of creation (UTC) | 2013-01-04 18:18:39 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
--.MNS.Z. | 1988-12-20T02:54:03.00 | 10.0 | undecidable | manual | SG | 224 | 0.4995 | 0 | 0.4 | |
--.CIO.Z. | 1988-12-20T02:54:01.70 | 10.0 | undecidable | manual | SG | 358 | 0.444 | 0.11 | 0.3 | |
--.ALP.Z. | 1988-12-20T02:53:56.60 | 10.0 | undecidable | manual | SG | 82 | 0.2997 | -0.15 | 0.2 | |
--.SS8.Z. | 1988-12-20T02:53:55.70 | 10.0 | undecidable | manual | SG | 11 | 0.2664 | -0.04 | 0.6 | |
--.MNS.Z. | 1988-12-20T02:53:55.40 | 10.0 | undecidable | manual | PG | 224 | 0.4995 | -0.02 | 0.9 | |
--.CIO.Z. | 1988-12-20T02:53:54.60 | 10.0 | undecidable | manual | PG | 358 | 0.444 | -0.01 | 2 | |
--.ALP.Z. | 1988-12-20T02:53:51.90 | 10.0 | undecidable | manual | PG | 82 | 0.2997 | 0.08 | 1.5 | |
--.SS8.Z. | 1988-12-20T02:53:51.20 | 10.0 | undecidable | manual | PG | 11 | 0.2664 | -0.03 | 2.1 |