A magnitude ML 1.0 earthquake occured in region: 5 km NE Norcia (PG), on
and geographic coordinates (lat, lon) 42.8250, 13.1360 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 | 8 | 281 | 5238 |
Preci | PG | 10 | 724 | 5962 |
Visso | MC | 12 | 1107 | 7069 |
Ussita | MC | 13 | 444 | 7513 |
Arquata del Tronto | AP | 14 | 1178 | 8691 |
Cascia | PG | 15 | 3217 | 11908 |
Montegallo | AP | 16 | 523 | 12431 |
Accumoli | RI | 17 | 667 | 13098 |
Montemonaco | AP | 18 | 604 | 13702 |
Cerreto di Spoleto | PG | 18 | 1075 | 14777 |
Sellano | PG | 18 | 1079 | 15856 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-02-23 05:35:33 |
42.8253 | 13.1358 | 11 | 2021-02-23 05:39:59 |
Sala Sismica INGV-Roma | 87400071 |
Field | Value |
---|---|
Time (UTC) | 2021-02-23 05:35:33 ± 0.05 |
Latitude | 42.8253 ± 0.0027 |
Longitude | 13.1358 ± 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 | 87400071 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 405 |
Semi-minor axis of confidence ellipse (meter) | 213 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 64 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 400.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 99 |
Number of associated phases, regardless of their use for origin computation | 22 |
Number of defining phases | 22 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.15 |
Epicentral distance of station closest to the epicenter (degree) | 0.01799 |
Epicentral distance of station farthest from the epicenter (degree) | 0.32106 |
Number of stations at which the event was observed | 13 |
Number of stations from which data was used for origin computation | 13 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.3 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 87400071 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-02-23 05:39:59 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CSP1.EHZ. | 2021-02-23T05:35:44.00 | 0.3 | undecidable | manual | S | 11 | 30.0477 | 50 | 0.13 | 72 |
IV.T1299.EHN. | 2021-02-23T05:35:42.62 | 0.1 | undecidable | manual | S | 151 | 24.3534 | 50 | 0.29 | 94 |
IV.SMA1.EHZ. | 2021-02-23T05:35:42.82 | 0.3 | undecidable | manual | S | 143 | 27.0507 | 50 | -0.23 | 71 |
IV.CESI.HHZ. | 2021-02-23T05:35:42.99 | 0.3 | undecidable | manual | S | 317 | 27.3504 | 50 | -0.16 | 72 |
IV.FDMO.HHZ. | 2021-02-23T05:35:42.43 | 0.3 | undecidable | manual | S | 350 | 23.754 | 50 | 0.25 | 71 |
IV.FEMA.HNE. | 2021-02-23T05:35:40.09 | 0.3 | undecidable | manual | S | 335 | 16.6722 | 123 | -0.09 | 74 |
IV.RM33.EHZ. | 2021-02-23T05:35:40.22 | 1.0 | negative | manual | P | 170 | 35.6421 | 50 | -0.04 | 24 |
IV.MMO1.EHZ. | 2021-02-23T05:35:40.18 | 0.1 | undecidable | manual | S | 62 | 17.5713 | 121 | -0.25 | 96 |
IV.CSP1.EHZ. | 2021-02-23T05:35:39.32 | 0.3 | negative | manual | P | 11 | 30.0477 | 50 | -0.08 | 73 |
IV.FDMO.HHZ. | 2021-02-23T05:35:38.30 | 0.3 | negative | manual | P | 350 | 23.754 | 50 | -0.12 | 73 |
IV.T1299.EHN. | 2021-02-23T05:35:38.58 | 0.1 | undecidable | manual | P | 151 | 24.3534 | 50 | 0.07 | 98 |
IV.MC2.EHZ. | 2021-02-23T05:35:38.73 | 0.3 | undecidable | manual | S | 24 | 10.4784 | 136 | 0.23 | 73 |
IV.SMA1.EHZ. | 2021-02-23T05:35:38.92 | 0.6 | positive | manual | P | 143 | 27.0507 | 50 | -0.01 | 50 |
IV.MTRA.EHE. | 2021-02-23T05:35:38.16 | 0.1 | undecidable | manual | P | 110 | 22.5552 | 50 | -0.08 | 98 |
IV.LNSS.HHE. | 2021-02-23T05:35:38.67 | 0.1 | undecidable | manual | P | 198 | 25.8519 | 50 | -0.08 | 98 |
IV.CESI.HHZ. | 2021-02-23T05:35:38.96 | 1.0 | negative | manual | P | 317 | 27.3504 | 50 | -0.02 | 25 |
IV.MMO1.EHZ. | 2021-02-23T05:35:37.40 | 0.6 | positive | manual | P | 62 | 17.5713 | 121 | -0.02 | 50 |
IV.FEMA.HNE. | 2021-02-23T05:35:37.30 | 0.3 | undecidable | manual | P | 335 | 16.6722 | 123 | 0.03 | 75 |
IT.MTCL.HGE. | 2021-02-23T05:35:37.96 | 0.3 | undecidable | manual | P | 329 | 21.7671 | 50 | -0.15 | 73 |
IV.NRCA.HHZ. | 2021-02-23T05:35:36.96 | 0.3 | undecidable | manual | S | 297 | 1.998 | 170 | -0.11 | 76 |
IV.MC2.EHZ. | 2021-02-23T05:35:36.59 | 0.6 | negative | manual | P | 24 | 10.4784 | 136 | 0.29 | 48 |
IV.NRCA.HHZ. | 2021-02-23T05:35:35.65 | 0.1 | undecidable | manual | P | 297 | 1.998 | 170 | 0.17 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHN. | ML:1.3 | 0.000375 | 0.16 | AML | other | m | 2021-02-23T05:35:37.03 |
IV.NRCA.HHE. | ML:1.2 | 0.0002875 | 0.08 | AML | other | m | 2021-02-23T05:35:37.08 |
IV.SMA1.EHN. | ML:0.7 | 0.000027049999999999997 | 1.02 | AML | other | m | 2021-02-23T05:35:46.69 |
IV.SMA1.EHE. | ML:0.8 | 0.000029829999999999997 | 0.5 | AML | other | m | 2021-02-23T05:35:47.30 |