A magnitude ML 0.5 earthquake occured in region: 5 km E Norcia (PG), on
and geographic coordinates (lat, lon) 42.7980, 13.1560 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 | 5 | 4957 | 4957 |
Castelsantangelo sul Nera | MC | 11 | 281 | 5238 |
Arquata del Tronto | AP | 12 | 1178 | 6416 |
Preci | PG | 13 | 724 | 7140 |
Accumoli | RI | 14 | 667 | 7807 |
Cascia | PG | 15 | 3217 | 11024 |
Montegallo | AP | 15 | 523 | 11547 |
Visso | MC | 16 | 1107 | 12654 |
Ussita | MC | 16 | 444 | 13098 |
Montemonaco | AP | 18 | 604 | 13702 |
Cerreto di Spoleto | PG | 20 | 1075 | 14777 |
Cittareale | RI | 20 | 482 | 15259 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.5 | 2020-10-31 21:57:18 |
42.7978 | 13.1565 | 11 | 2020-10-31 22:43:46 |
Sala Sismica INGV-Roma | 84337871 |
Field | Value |
---|---|
Time (UTC) | 2020-10-31 21:57:18 ± 0.04 |
Latitude | 42.7978 ± 0.0018 |
Longitude | 13.1565 ± 0.0037 |
Depth (km) | 11 (operator assigned) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 84337871 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 290 |
Semi-minor axis of confidence ellipse (meter) | 110 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 245 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 290.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 206 |
Number of associated phases, regardless of their use for origin computation | 9 |
Number of defining phases | 8 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.04 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.37232 |
Number of stations at which the event was observed | 5 |
Number of stations from which data was used for origin computation | 4 |
Field | Value |
---|---|
Value | 0.5 |
Uncertainty | 0.1 |
Num. used stations | 2 |
Type of magnitude | ML |
Reference to an origin | 84337871 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2020-10-31 22:43:46 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.TERO.HHZ. | 2020-10-31T21:57:32.19 | 0.6 | undecidable | manual | S | 118 | 41.3253 | 50 | -0.06 | 65 |
IV.FDMO.HHZ. | 2020-10-31T21:57:28.39 | 0.3 | undecidable | manual | S | 348 | 27.0507 | 50 | -0.05 | 100 |
IV.SMA1.EHZ. | 2020-10-31T21:57:27.49 | 0.6 | undecidable | manual | S | 142 | 23.5542 | 50 | -0.03 | 67 |
IV.TERO.HHZ. | 2020-10-31T21:57:26.57 | 0.6 | undecidable | manual | P | 118 | 41.3253 | 50 | 0.03 | 66 |
IV.MMO1.EHZ. | 2020-10-31T21:57:25.98 | 0.6 | undecidable | manual | S | 51 | 17.871 | 50 | 0 | 68 |
IV.FDMO.HHZ. | 2020-10-31T21:57:24.40 | 1.0 | positive | manual | P | 348 | 27.0507 | 50 | 0.06 | 33 |
IV.SMA1.EHZ. | 2020-10-31T21:57:23.82 | 0.6 | positive | manual | P | 142 | 23.5542 | 50 | 0.01 | 68 |
IV.MMO1.EHZ. | 2020-10-31T21:57:23.04 | 1.0 | positive | manual | P | 51 | 17.871 | 50 | 0.12 | 34 |
IV.NRCA.HHZ. | 2020-10-31T21:57:21.62 | 3.0 | undecidable | manual | P | -0.01 | 0 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.FDMO.HHN. | ML:0.6 | 0.00001944 | 1.46 | AML | other | m | 2020-10-31T21:57:29.86 |
IV.FDMO.HHE. | ML:0.4 | 0.0000147 | 0.56 | AML | other | m | 2020-10-31T21:57:29.69 |