A magnitude ML 1.0 earthquake occured in region: 4 km NE Norcia (PG), on
and geographic coordinates (lat, lon) 42.8250, 13.1260 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 |
Castelsantangelo sul Nera | MC | 8 | 281 | 5238 |
Preci | PG | 9 | 724 | 5962 |
Visso | MC | 12 | 1107 | 7069 |
Ussita | MC | 13 | 444 | 7513 |
Cascia | PG | 15 | 3217 | 10730 |
Arquata del Tronto | AP | 15 | 1178 | 11908 |
Montegallo | AP | 17 | 523 | 12431 |
Cerreto di Spoleto | PG | 17 | 1075 | 13506 |
Accumoli | RI | 18 | 667 | 14173 |
Sellano | PG | 18 | 1079 | 15252 |
Montemonaco | AP | 18 | 604 | 15856 |
Poggiodomo | PG | 20 | 117 | 15973 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-10-13 07:31:46 |
42.8253 | 13.1263 | 10 | 2021-10-13 07:35:50 |
Sala Sismica INGV-Roma | 96491171 |
Field | Value |
---|---|
Time (UTC) | 2021-10-13 07:31:46 ± 0.18 |
Latitude | 42.8253 ± 0.0108 |
Longitude | 13.1263 ± 0.0086 |
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 | 96491171 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 1230 |
Semi-minor axis of confidence ellipse (meter) | 580 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 161 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 1230.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 250 |
Number of associated phases, regardless of their use for origin computation | 11 |
Number of defining phases | 10 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.18 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.27249 |
Number of stations at which the event was observed | 7 |
Number of stations from which data was used for origin computation | 6 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.4 |
Num. used stations | 6 |
Type of magnitude | ML |
Reference to an origin | 96491171 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-10-13 07:35:50 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CSP1.EHZ. | 2021-10-13T07:31:57.35 | 0.3 | undecidable | manual | S | 12 | 30.2475 | 50 | -0.17 | 71 |
IV.MF5.EHZ. | 2021-10-13T07:31:53.73 | 3.0 | undecidable | manual | P | 0.01 | 0 | |||
IV.MMO1.EHZ. | 2021-10-13T07:31:53.82 | 0.1 | undecidable | manual | S | 63 | 18.2706 | 118 | -0.09 | 99 |
IV.CESI.HHE. | 2021-10-13T07:31:52.46 | 0.3 | undecidable | manual | P | 318 | 26.8509 | 50 | 0.03 | 74 |
IV.CSP1.EHZ. | 2021-10-13T07:31:52.90 | 1.0 | undecidable | manual | P | 12 | 30.2475 | 50 | -0.05 | 24 |
IV.FDMO.HHZ. | 2021-10-13T07:31:51.88 | 1.0 | negative | manual | P | 352 | 23.6541 | 113 | 0.04 | 25 |
IV.MC2.EHZ. | 2021-10-13T07:31:51.94 | 0.3 | undecidable | manual | S | 28 | 10.7781 | 132 | 0.15 | 74 |
IV.MMO1.EHZ. | 2021-10-13T07:31:50.90 | 0.1 | undecidable | manual | P | 63 | 18.2706 | 118 | 0.03 | 100 |
IV.MC2.EHZ. | 2021-10-13T07:31:49.95 | 0.6 | positive | manual | P | 28 | 10.7781 | 132 | 0.3 | 48 |
IV.NRCA.HHZ. | 2021-10-13T07:31:49.88 | 0.1 | undecidable | manual | S | 313 | 1.2987 | 172 | -0.28 | 98 |
IV.NRCA.HHZ. | 2021-10-13T07:31:48.88 | 0.1 | undecidable | manual | P | 313 | 1.2987 | 172 | 0.18 | 100 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HNN. | ML:0.0 | 0.00025551895000000004 | 0.0832 | AML | other | m | 2021-10-13T07:31:50.40 |
IV.FDMO.HHE. | ML:0.4 | 0.000016760765 | 0.2752 | AML | other | m | 2021-10-13T07:31:56.18 |
IV.FDMO.HHN. | ML:0.4 | 0.0000152468745 | 0.1216 | AML | other | m | 2021-10-13T07:31:56.30 |
IV.CSP1.EHE. | ML:1.0 | 0.000048710014999999994 | 0.9216 | AML | other | m | 2021-10-13T07:32:08.04 |
IV.CSP1.EHN. | ML:1.1 | 0.000057076245000000004 | 0.7232 | AML | other | m | 2021-10-13T07:32:04.20 |
IV.MF5.EHE. | ML:1.4 | 0.000103737785 | 1.6384 | AML | other | m | 2021-10-13T07:31:59.14 |
IV.MF5.EHN. | ML:1.2 | 0.00007333581 | 1.696 | AML | other | m | 2021-10-13T07:32:00.11 |