A magnitude ML 0.5 earthquake occured in region: 2 km W Norcia (PG), on
and geographic coordinates (lat, lon) 42.7960, 13.0710 at 11 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 | 2 | 4957 | 4957 |
Cascia | PG | 10 | 3217 | 8174 |
Preci | PG | 10 | 724 | 8898 |
Cerreto di Spoleto | PG | 13 | 1075 | 9973 |
Castelsantangelo sul Nera | MC | 13 | 281 | 10254 |
Poggiodomo | PG | 14 | 117 | 10371 |
Visso | MC | 15 | 1107 | 11478 |
Sellano | PG | 16 | 1079 | 12557 |
Vallo di Nera | PG | 17 | 364 | 12921 |
Ussita | MC | 18 | 444 | 13365 |
Accumoli | RI | 18 | 667 | 14032 |
Arquata del Tronto | AP | 19 | 1178 | 15210 |
Monteleone di Spoleto | PG | 19 | 599 | 15809 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.5 | 2021-08-13 00:43:27 |
42.7958 | 13.0712 | 11 | 2021-08-13 00:50:54 |
Sala Sismica INGV-Roma | 94046171 |
Field | Value |
---|---|
Time (UTC) | 2021-08-13 00:43:27 ± 0.03 |
Latitude | 42.7958 ± 0.0018 |
Longitude | 13.0712 ± 0.0037 |
Depth (km) | 11 ± 0 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 94046171 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 330 |
Semi-minor axis of confidence ellipse (meter) | 166 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 302 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 330.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 98 |
Number of associated phases, regardless of their use for origin computation | 15 |
Number of defining phases | 15 |
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) | 0.04946 |
Epicentral distance of station farthest from the epicenter (degree) | 0.31206 |
Number of stations at which the event was observed | 8 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 0.5 |
Uncertainty | 0.2 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 94046171 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-13 00:50:54 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CSP1.EHZ. | 2021-08-13T00:43:38.99 | 0.3 | undecidable | manual | S | 18 | 34.6431 | 90 | 0.06 | 73 |
IV.CESI.HHZ. | 2021-08-13T00:43:36.73 | 0.3 | undecidable | manual | S | 330 | 26.8509 | 91 | -0.13 | 71 |
IV.MMO1.EHZ. | 2021-08-13T00:43:35.91 | 0.3 | undecidable | manual | S | 61 | 23.754 | 91 | -0.12 | 71 |
IV.LNSS.HHE. | 2021-08-13T00:43:35.36 | 0.3 | undecidable | manual | S | 187 | 21.5673 | 91 | -0.08 | 72 |
IV.GAVE.EHZ. | 2021-08-13T00:43:34.69 | 0.3 | undecidable | manual | S | 232 | 18.4704 | 92 | 0.08 | 75 |
IV.MC2.EHZ. | 2021-08-13T00:43:34.13 | 0.3 | undecidable | manual | S | 37 | 15.9729 | 93 | 0.16 | 73 |
IV.SMA1.EHZ. | 2021-08-13T00:43:33.16 | 1.0 | negative | manual | P | 130 | 28.2495 | 91 | 0.15 | 24 |
IV.CSP1.EHZ. | 2021-08-13T00:43:33.98 | 1.0 | undecidable | manual | P | 18 | 34.6431 | 90 | 0 | 24 |
IV.LNSS.HHE. | 2021-08-13T00:43:32.01 | 0.1 | undecidable | manual | P | 187 | 21.5673 | 91 | 0.04 | 99 |
IV.MMO1.EHZ. | 2021-08-13T00:43:32.22 | 0.1 | undecidable | manual | P | 61 | 23.754 | 91 | -0.09 | 96 |
IV.CESI.HHZ. | 2021-08-13T00:43:32.83 | 0.6 | undecidable | manual | P | 330 | 26.8509 | 91 | 0.04 | 49 |
IV.MC2.EHZ. | 2021-08-13T00:43:31.20 | 0.1 | undecidable | manual | P | 37 | 15.9729 | 93 | 0.08 | 99 |
IV.GAVE.EHZ. | 2021-08-13T00:43:31.61 | 0.3 | undecidable | manual | P | 232 | 18.4704 | 92 | 0.12 | 74 |
IV.NRCA.HNE. | 2021-08-13T00:43:31.37 | 0.3 | undecidable | manual | S | 40 | 5.4945 | 145 | -0.18 | 76 |
IV.NRCA.HNE. | 2021-08-13T00:43:29.79 | 0.1 | undecidable | manual | P | 40 | 5.4945 | 145 | 0.06 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.GAVE.EHE. | ML:0.7 | 0.0000353 | 1.54 | AML | other | m | 2021-08-13T00:43:35.86 |
IV.GAVE.EHN. | ML:0.7 | 0.0000351 | 0.5 | AML | other | m | 2021-08-13T00:43:35.20 |
IV.CESI.HHN. | ML:0.4 | 0.00001575 | 0.32 | AML | other | m | 2021-08-13T00:43:37.15 |
IV.CESI.HHE. | ML:0.3 | 0.000008540000000000001 | 0.86 | AML | other | m | 2021-08-13T00:43:37.30 |