A magnitude ML 1.1 earthquake occured in region: 2 km N Norcia (PG), on
and geographic coordinates (lat, lon) 42.8140, 13.0980 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 | 2 | 4957 | 4957 |
Preci | PG | 9 | 724 | 5681 |
Castelsantangelo sul Nera | MC | 10 | 281 | 5962 |
Cascia | PG | 13 | 3217 | 9179 |
Visso | MC | 13 | 1107 | 10286 |
Cerreto di Spoleto | PG | 15 | 1075 | 11361 |
Ussita | MC | 15 | 444 | 11805 |
Sellano | PG | 16 | 1079 | 12884 |
Arquata del Tronto | AP | 17 | 1178 | 14062 |
Poggiodomo | PG | 17 | 117 | 14179 |
Accumoli | RI | 18 | 667 | 14846 |
Montegallo | AP | 20 | 523 | 15369 |
Vallo di Nera | PG | 20 | 364 | 15733 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.1 | 2021-09-23 21:24:44 |
42.814 | 13.0978 | 11 | 2021-09-23 21:35:51 |
Sala Sismica INGV-Roma | 95798831 |
Field | Value |
---|---|
Time (UTC) | 2021-09-23 21:24:44 ± 0.05 |
Latitude | 42.8140 ± 0.0027 |
Longitude | 13.0978 ± 0.0049 |
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 | 95798831 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 358 |
Semi-minor axis of confidence ellipse (meter) | 229 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 104 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 360.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 93 |
Number of associated phases, regardless of their use for origin computation | 20 |
Number of defining phases | 20 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.17 |
Epicentral distance of station closest to the epicenter (degree) | 0.02338 |
Epicentral distance of station farthest from the epicenter (degree) | 0.28868 |
Number of stations at which the event was observed | 10 |
Number of stations from which data was used for origin computation | 10 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.3 |
Num. used stations | 5 |
Type of magnitude | ML |
Reference to an origin | 95798831 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-09-23 21:35:51 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CSP1.EHZ. | 2021-09-23T21:24:55.89 | 0.1 | undecidable | manual | S | 16 | 32.0457 | 50 | 0.03 | 96 |
IV.T1299.EHE. | 2021-09-23T21:24:54.11 | 0.1 | undecidable | manual | S | 143 | 24.9528 | 50 | 0.13 | 96 |
IV.CESI.HHZ. | 2021-09-23T21:24:54.29 | 0.1 | undecidable | manual | S | 324 | 26.3514 | 50 | -0.06 | 97 |
IV.SMA1.EHZ. | 2021-09-23T21:24:54.55 | 0.6 | undecidable | manual | S | 136 | 28.0497 | 50 | -0.27 | 46 |
IV.FDMO.HHZ. | 2021-09-23T21:24:53.81 | 0.3 | undecidable | manual | S | 358 | 24.6531 | 50 | -0.1 | 72 |
IV.LNSS.HNN. | 2021-09-23T21:24:53.53 | 0.3 | undecidable | manual | S | 191 | 23.8539 | 50 | -0.16 | 71 |
IV.GAVE.HNE. | 2021-09-23T21:24:52.94 | 0.1 | undecidable | manual | S | 231 | 21.3675 | 116 | -0.04 | 98 |
IV.MMO1.HNZ. | 2021-09-23T21:24:52.48 | 0.1 | undecidable | manual | S | 63 | 20.868 | 117 | -0.35 | 92 |
IV.CSP1.EHZ. | 2021-09-23T21:24:51.30 | 1.0 | undecidable | manual | P | 16 | 32.0457 | 50 | 0.14 | 24 |
IV.CESI.HHZ. | 2021-09-23T21:24:50.32 | 0.3 | positive | manual | P | 324 | 26.3514 | 50 | 0.04 | 73 |
IV.SMA1.EHZ. | 2021-09-23T21:24:50.45 | 1.0 | undecidable | manual | P | 136 | 28.0497 | 50 | -0.09 | 24 |
IV.FDMO.HHZ. | 2021-09-23T21:24:50.03 | 1.0 | negative | manual | P | 358 | 24.6531 | 50 | 0.01 | 25 |
IV.T1299.EHE. | 2021-09-23T21:24:50.16 | 0.1 | undecidable | manual | P | 143 | 24.9528 | 50 | 0.09 | 96 |
IV.MC2.EHE. | 2021-09-23T21:24:50.38 | 0.1 | undecidable | manual | S | 34 | 13.0758 | 129 | -0.15 | 97 |
IV.LNSS.HNN. | 2021-09-23T21:24:49.93 | 0.1 | undecidable | manual | P | 191 | 23.8539 | 50 | 0.03 | 98 |
IV.GAVE.HNE. | 2021-09-23T21:24:49.31 | 0.6 | undecidable | manual | P | 231 | 21.3675 | 116 | -0.18 | 48 |
IV.MMO1.HNZ. | 2021-09-23T21:24:49.80 | 0.3 | undecidable | manual | P | 63 | 20.868 | 117 | 0.4 | 68 |
IV.NRCA.HHZ. | 2021-09-23T21:24:48.35 | 0.1 | undecidable | manual | S | 32 | 2.5974 | 166 | -0.1 | 100 |
IV.MC2.EHE. | 2021-09-23T21:24:48.38 | 0.1 | undecidable | manual | P | 34 | 13.0758 | 129 | 0.31 | 94 |
IV.NRCA.HHZ. | 2021-09-23T21:24:47.07 | 0.1 | undecidable | manual | P | 32 | 2.5974 | 166 | 0.2 | 98 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHE. | ML:1.0 | 0.00019116475 | 0.0768 | AML | other | m | 2021-09-23T21:24:48.40 |
IV.NRCA.HHN. | ML:1.3 | 0.00037772495 | 0.1408 | AML | other | m | 2021-09-23T21:24:48.45 |
IV.NRCA.HNE. | ML:1.0 | 0.00019172115 | 0.0896 | AML | other | m | 2021-09-23T21:24:48.40 |
IV.NRCA.HNN. | ML:1.3 | 0.00033273795 | 0.1408 | AML | other | m | 2021-09-23T21:24:48.47 |
IV.SMA1.EHN. | ML:0.5 | 0.000016530505 | 0.192 | AML | other | m | 2021-09-23T21:24:55.74 |