A magnitude ML 1.0 earthquake occured in region: 4 km N Norcia (PG), on
and geographic coordinates (lat, lon) 42.8290, 13.1080 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 | 4 | 4957 | 4957 |
Preci | PG | 8 | 724 | 5681 |
Castelsantangelo sul Nera | MC | 8 | 281 | 5962 |
Visso | MC | 12 | 1107 | 7069 |
Ussita | MC | 13 | 444 | 7513 |
Cascia | PG | 14 | 3217 | 10730 |
Cerreto di Spoleto | PG | 16 | 1075 | 11805 |
Sellano | PG | 16 | 1079 | 12884 |
Arquata del Tronto | AP | 17 | 1178 | 14062 |
Montegallo | AP | 19 | 523 | 14585 |
Accumoli | RI | 19 | 667 | 15252 |
Poggiodomo | PG | 19 | 117 | 15369 |
Montemonaco | AP | 20 | 604 | 15973 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-07-28 13:31:21 |
42.8288 | 13.1083 | 10 | 2021-07-28 13:39:25 |
Sala Sismica INGV-Roma | 93303171 |
Field | Value |
---|---|
Time (UTC) | 2021-07-28 13:31:21 ± 0.06 |
Latitude | 42.8288 ± 0.0036 |
Longitude | 13.1083 ± 0.0049 |
Depth (km) | 10 ± 0 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 93303171 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 470 |
Semi-minor axis of confidence ellipse (meter) | 217 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 235 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 470.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 127 |
Number of associated phases, regardless of their use for origin computation | 17 |
Number of defining phases | 17 |
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) | 0.00630 |
Epicentral distance of station farthest from the epicenter (degree) | 0.41818 |
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 | 1.0 |
Uncertainty | 0.3 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 93303171 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-07-28 13:39:25 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.MML1.EHZ. | 2021-07-28T13:31:33.15 | 0.6 | undecidable | manual | S | 341 | 33.4443 | 50 | -0.17 | 46 |
IV.CSP1.EHZ. | 2021-07-28T13:31:32.23 | 0.6 | undecidable | manual | S | 15 | 30.2475 | 50 | -0.21 | 46 |
IV.CESI.HHZ. | 2021-07-28T13:31:31.00 | 0.3 | undecidable | manual | S | 320 | 25.5522 | 111 | -0.16 | 70 |
IV.LNSS.HNE. | 2021-07-28T13:31:31.27 | 0.6 | undecidable | manual | S | 193 | 25.6521 | 111 | 0.08 | 48 |
IV.MTRA.EHZ. | 2021-07-28T13:31:30.69 | 0.3 | undecidable | manual | S | 109 | 24.753 | 112 | -0.2 | 70 |
IV.TERO.HHZ. | 2021-07-28T13:31:30.42 | 0.3 | undecidable | manual | P | 119 | 46.4202 | 50 | 0.05 | 69 |
IV.MML1.EHZ. | 2021-07-28T13:31:28.82 | 0.3 | undecidable | manual | P | 341 | 33.4443 | 50 | 0.44 | 65 |
IV.CSP1.EHZ. | 2021-07-28T13:31:27.83 | 0.3 | undecidable | manual | P | 15 | 30.2475 | 50 | -0.05 | 71 |
IV.MC2.EHZ. | 2021-07-28T13:31:27.00 | 0.6 | undecidable | manual | S | 36 | 11.2776 | 131 | 0.17 | 48 |
IV.CESI.HHZ. | 2021-07-28T13:31:27.17 | 0.1 | undecidable | manual | P | 320 | 25.5522 | 111 | 0.03 | 96 |
IV.LNSS.HNE. | 2021-07-28T13:31:27.09 | 0.3 | undecidable | manual | P | 193 | 25.6521 | 111 | -0.06 | 72 |
IV.FDMO.HHZ. | 2021-07-28T13:31:26.67 | 0.6 | undecidable | manual | P | 356 | 23.0547 | 113 | 0 | 49 |
IV.MTRA.EHZ. | 2021-07-28T13:31:26.94 | 0.1 | undecidable | manual | P | 109 | 24.753 | 112 | -0.04 | 96 |
IV.NRCA.HNZ. | 2021-07-28T13:31:25.00 | 0.1 | undecidable | manual | S | 43 | 0.6993 | 176 | -0.06 | 100 |
IT.MTCL.HGE. | 2021-07-28T13:31:25.84 | 0.6 | undecidable | manual | P | 334 | 20.3685 | 116 | -0.33 | 46 |
IV.MC2.EHZ. | 2021-07-28T13:31:24.97 | 0.3 | negative | manual | P | 36 | 11.2776 | 131 | 0.33 | 70 |
IV.NRCA.HNZ. | 2021-07-28T13:31:23.89 | 1.0 | undecidable | manual | P | 43 | 0.6993 | 176 | 0.28 | 24 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHE. | ML:1.9 | 0.00163 | 0.1 | AML | other | m | 2021-07-28T13:31:25.09 |
IV.NRCA.HHN. | ML:1.6 | 0.000804 | 0.12 | AML | other | m | 2021-07-28T13:31:25.54 |
IV.MTRA.EHN. | ML:1.3 | 0.00011999999999999999 | 0.28 | AML | other | m | 2021-07-28T13:31:31.24 |
IV.CESI.HHN. | ML:1.0 | 0.00005925 | 0.24 | AML | other | m | 2021-07-28T13:31:31.23 |
IV.CESI.HHE. | ML:0.8 | 0.000040050000000000004 | 0.66 | AML | other | m | 2021-07-28T13:31:31.17 |
IV.MTRA.EHE. | ML:1.3 | 0.000121 | 0.26 | AML | other | m | 2021-07-28T13:31:31.23 |
IV.CSP1.EHE. | ML:1.0 | 0.000046192885 | 0.2368 | AML | other | m | 2021-07-28T13:31:34.37 |
IV.CSP1.EHN. | ML:1.1 | 0.0000561304205 | 0.2752 | AML | other | m | 2021-07-28T13:31:34.19 |
IV.MML1.EHE. | ML:0.6 | 0.00001287577 | 0.1792 | AML | other | m | 2021-07-28T13:31:33.82 |
IV.MML1.EHN. | ML:0.6 | 0.000015004458 | 0.1408 | AML | other | m | 2021-07-28T13:31:34.45 |