A magnitude ML 0.5 earthquake occured in region: 3 km N Norcia (PG), on
and geographic coordinates (lat, lon) 42.8160, 13.0860 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 | 11 | 281 | 5962 |
Cascia | PG | 12 | 3217 | 9179 |
Visso | MC | 13 | 1107 | 10286 |
Cerreto di Spoleto | PG | 14 | 1075 | 11361 |
Ussita | MC | 15 | 444 | 11805 |
Sellano | PG | 15 | 1079 | 12884 |
Poggiodomo | PG | 17 | 117 | 13001 |
Arquata del Tronto | AP | 18 | 1178 | 14179 |
Accumoli | RI | 19 | 667 | 14846 |
Vallo di Nera | PG | 19 | 364 | 15210 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.5 | 2021-04-28 23:13:56 |
42.8158 | 13.0857 | 10 | 2021-04-28 23:20:31 |
Sala Sismica INGV-Roma | 89567961 |
Field | Value |
---|---|
Time (UTC) | 2021-04-28 23:13:56 ± 0.08 |
Latitude | 42.8158 ± 0.0045 |
Longitude | 13.0857 ± 0.0074 |
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 | 89567961 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 542 |
Semi-minor axis of confidence ellipse (meter) | 460 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 309 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 540.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 96 |
Number of associated phases, regardless of their use for origin computation | 19 |
Number of defining phases | 16 |
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) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.42718 |
Number of stations at which the event was observed | 11 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 0.5 |
Uncertainty | 0.2 |
Num. used stations | 3 |
Type of magnitude | ML |
Reference to an origin | 89567961 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-28 23:20:31 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
TV.SF04.EHZ. | 2021-04-28T23:14:19.14 | 3.0 | undecidable | manual | P | 1.85 | 0 | |||
IV.TERO.HHZ. | 2021-04-28T23:14:12.04 | 0.6 | undecidable | manual | S | 117 | 47.4192 | 50 | -0.38 | 44 |
IV.MF5.EHZ. | 2021-04-28T23:14:10.04 | 0.6 | undecidable | manual | S | 58 | 35.8419 | 50 | 0.69 | 41 |
IV.SMA1.EHZ. | 2021-04-28T23:14:07.32 | 0.3 | undecidable | manual | S | 135 | 28.9488 | 50 | -0.18 | 72 |
IV.CESI.HHZ. | 2021-04-28T23:14:06.37 | 0.6 | undecidable | manual | S | 325 | 25.5522 | 110 | -0.08 | 49 |
IV.FDMO.HHZ. | 2021-04-28T23:14:05.62 | 0.6 | undecidable | manual | S | 0 | 24.4533 | 111 | -0.46 | 45 |
IV.ASSB.HHZ. | 2021-04-28T23:14:05.08 | 3.0 | undecidable | manual | P | -0.07 | 0 | |||
IV.MMO1.EHZ. | 2021-04-28T23:14:05.02 | 0.6 | undecidable | manual | S | 65 | 21.6672 | 114 | -0.17 | 49 |
IV.TERO.HHZ. | 2021-04-28T23:14:05.82 | 1.0 | undecidable | manual | P | 117 | 47.4192 | 50 | -0.07 | 24 |
IV.GAVE.EHZ. | 2021-04-28T23:14:04.92 | 0.6 | undecidable | manual | S | 229 | 20.7681 | 115 | 0.03 | 50 |
IV.MF5.EHZ. | 2021-04-28T23:14:04.70 | 1.0 | negative | manual | P | 58 | 35.8419 | 50 | 0.58 | 21 |
IV.SMA1.EHZ. | 2021-04-28T23:14:03.02 | 1.0 | undecidable | manual | P | 135 | 28.9488 | 50 | -0.02 | 25 |
IV.RM33.EHZ. | 2021-04-28T23:14:03.97 | 3.0 | undecidable | manual | P | -0.06 | 0 | |||
IV.FDMO.HHZ. | 2021-04-28T23:14:02.13 | 1.0 | undecidable | manual | P | 0 | 24.4533 | 111 | -0.1 | 25 |
IV.CESI.HHZ. | 2021-04-28T23:14:02.35 | 1.0 | undecidable | manual | P | 325 | 25.5522 | 110 | -0.09 | 25 |
IV.MMO1.EHZ. | 2021-04-28T23:14:01.68 | 0.6 | undecidable | manual | P | 65 | 21.6672 | 114 | -0.04 | 50 |
IV.GAVE.EHZ. | 2021-04-28T23:14:01.59 | 0.1 | undecidable | manual | P | 229 | 20.7681 | 115 | 0.05 | 100 |
IV.NRCA.HHZ. | 2021-04-28T23:14:00.53 | 0.6 | undecidable | manual | S | 50 | 3.0969 | 162 | 0.09 | 51 |
IV.NRCA.HHZ. | 2021-04-28T23:13:59.16 | 0.1 | undecidable | manual | P | 50 | 3.0969 | 162 | 0.19 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.FDMO.HHE. | ML:0.4 | 0.00001715 | 1.02 | AML | other | m | 2021-04-28T23:14:06.88 |
IV.FDMO.HHN. | ML:0.4 | 0.00001535 | 0.92 | AML | other | m | 2021-04-28T23:14:06.85 |
IV.NRCA.HNE. | ML:0.0 | 0.00041231835 | 0.0896 | AML | other | m | 2021-04-28T23:14:00.61 |
IV.NRCA.HNN. | ML:0.0 | 0.0002188654 | 9.088 | AML | other | m | 2021-04-28T23:14:00.61 |
IV.GAVE.EHE. | ML:0.8 | 0.000039869250000000005 | 2.2784 | AML | other | m | 2021-04-28T23:14:05.42 |