A magnitude ML 0.4 earthquake occured in region: 3 km N Norcia (PG), on
and geographic coordinates (lat, lon) 42.8220, 13.1010 at 10 km depth.
The earthquake was located by: Sala Sismica INGV-Roma.
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 | 3 | 4957 | 4957 |
Preci | PG | 8 | 724 | 5681 |
Castelsantangelo sul Nera | MC | 9 | 281 | 5962 |
Visso | MC | 12 | 1107 | 7069 |
Cascia | PG | 13 | 3217 | 10286 |
Ussita | MC | 14 | 444 | 10730 |
Cerreto di Spoleto | PG | 15 | 1075 | 11805 |
Sellano | PG | 16 | 1079 | 12884 |
Arquata del Tronto | AP | 17 | 1178 | 14062 |
Poggiodomo | PG | 18 | 117 | 14179 |
Accumoli | RI | 19 | 667 | 14846 |
Montegallo | AP | 19 | 523 | 15369 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.4 | 2021-08-11 02:05:51 |
42.8218 | 13.1008 | 10 | 2021-08-11 11:51:16 |
Sala Sismica INGV-Roma | 93964341 |
Field | Value |
---|---|
Time (UTC) | 2021-08-11 02:05:51 ± 0.1 |
Latitude | 42.8218 ± 0.0054 |
Longitude | 13.1008 ± 0.0086 |
Depth (km) | 10 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 93964341 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 763 |
Semi-minor axis of confidence ellipse (meter) | 463 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 299 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 760.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 127 |
Number of associated phases, regardless of their use for origin computation | 12 |
Number of defining phases | 12 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.19 |
Epicentral distance of station closest to the epicenter (degree) | 0.01529 |
Epicentral distance of station farthest from the epicenter (degree) | 0.41908 |
Number of stations at which the event was observed | 7 |
Number of stations from which data was used for origin computation | 7 |
Field | Value |
---|---|
Value | 0.4 |
Uncertainty | 0.2 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 93964341 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-11 11:51:16 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CSP1.EHZ. | 2021-08-11T02:06:02.41 | 0.6 | undecidable | manual | S | 16 | 31.1466 | 50 | -0.1 | 48 |
IV.TERO.HHZ. | 2021-08-11T02:06:00.21 | 0.1 | undecidable | manual | P | 118 | 46.5201 | 50 | 0.01 | 96 |
IV.FDMO.HHZ. | 2021-08-11T02:06:00.16 | 0.6 | undecidable | manual | S | 357 | 23.8539 | 112 | -0.14 | 49 |
IV.MMO1.EHZ. | 2021-08-11T02:05:58.99 | 0.6 | undecidable | manual | S | 65 | 20.2686 | 115 | -0.18 | 49 |
IV.CSP1.EHZ. | 2021-08-11T02:05:57.67 | 1.0 | negative | manual | P | 16 | 31.1466 | 50 | -0.15 | 24 |
IV.MC2.EHZ. | 2021-08-11T02:05:57.07 | 0.6 | undecidable | manual | S | 36 | 12.2766 | 128 | 0.29 | 48 |
IV.FDMO.HHZ. | 2021-08-11T02:05:56.58 | 0.6 | positive | manual | P | 357 | 23.8539 | 112 | 0.04 | 50 |
IV.GAVE.EHZ. | 2021-08-11T02:05:56.21 | 0.1 | undecidable | manual | P | 230 | 22.1556 | 113 | -0.02 | 100 |
IV.MMO1.EHZ. | 2021-08-11T02:05:55.58 | 1.0 | undecidable | manual | P | 65 | 20.2686 | 115 | -0.31 | 24 |
IV.NRCA.HHZ. | 2021-08-11T02:05:54.27 | 0.6 | undecidable | manual | S | 40 | 1.6983 | 170 | -0.47 | 47 |
IV.MC2.EHZ. | 2021-08-11T02:05:54.79 | 0.3 | positive | manual | P | 36 | 12.2766 | 128 | 0.29 | 72 |
IV.NRCA.HHZ. | 2021-08-11T02:05:53.56 | 0.3 | undecidable | manual | P | 40 | 1.6983 | 170 | 0.23 | 74 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.GAVE.EHN. | ML:0.6 | 0.000024449999999999998 | 0.22 | AML | other | m | 2021-08-11T02:06:00.61 |
IV.FDMO.HHN. | ML:0.2 | 0.000011599999999999999 | 1.1 | AML | other | m | 2021-08-11T02:06:00.89 |
IV.GAVE.EHE. | ML:0.5 | 0.00002195 | 0.82 | AML | other | m | 2021-08-11T02:06:01.03 |
IV.FDMO.HHE. | ML:0.2 | 0.000009784999999999999 | 0.42 | AML | other | m | 2021-08-11T02:06:01.68 |