A magnitude ML 0.5 earthquake occured in region: 2 km NE Norcia (PG), on
and geographic coordinates (lat, lon) 42.8050, 13.1140 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 | 10 | 724 | 5681 |
Castelsantangelo sul Nera | MC | 11 | 281 | 5962 |
Cascia | PG | 13 | 3217 | 9179 |
Visso | MC | 14 | 1107 | 10286 |
Arquata del Tronto | AP | 15 | 1178 | 11464 |
Ussita | MC | 16 | 444 | 11908 |
Cerreto di Spoleto | PG | 16 | 1075 | 12983 |
Accumoli | RI | 16 | 667 | 13650 |
Poggiodomo | PG | 18 | 117 | 13767 |
Sellano | PG | 18 | 1079 | 14846 |
Montegallo | AP | 18 | 523 | 15369 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.5 | 2021-10-31 22:16:48 |
42.805 | 13.1138 | 10 | 2021-10-31 22:35:24 |
Sala Sismica INGV-Roma | 97122241 |
Field | Value |
---|---|
Time (UTC) | 2021-10-31 22:16:48 ± 0.08 |
Latitude | 42.8050 ± 0.0036 |
Longitude | 13.1138 ± 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 | 97122241 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 742 |
Semi-minor axis of confidence ellipse (meter) | 195 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 113 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 740.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 128 |
Number of associated phases, regardless of their use for origin computation | 12 |
Number of defining phases | 12 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.16 |
Epicentral distance of station closest to the epicenter (degree) | 0.11961 |
Epicentral distance of station farthest from the epicenter (degree) | 0.40290 |
Number of stations at which the event was observed | 9 |
Number of stations from which data was used for origin computation | 9 |
Field | Value |
---|---|
Value | 0.5 |
Uncertainty | 0.3 |
Num. used stations | 12 |
Type of magnitude | ML |
Reference to an origin | 97122241 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-10-31 22:35:24 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.TERO.HHZ. | 2021-10-31T22:16:57.55 | 0.6 | undecidable | manual | P | 117 | 44.7219 | 50 | 0.25 | 62 |
IV.LNSS.HHZ. | 2021-10-31T22:16:57.58 | 0.3 | undecidable | manual | S | 195 | 23.1546 | 114 | -0.1 | 100 |
IV.MMO1.EHZ. | 2021-10-31T22:16:56.44 | 0.3 | undecidable | manual | S | 59 | 20.2686 | 117 | -0.31 | 96 |
IV.CSP1.EHZ. | 2021-10-31T22:16:55.36 | 0.6 | positive | manual | P | 13 | 32.6451 | 50 | -0.07 | 66 |
IV.LNSS.HHZ. | 2021-10-31T22:16:54.01 | 0.6 | positive | manual | P | 195 | 23.1546 | 114 | 0.05 | 67 |
IV.MC2.EHZ. | 2021-10-31T22:16:54.99 | 0.3 | undecidable | manual | S | 27 | 13.2756 | 128 | 0.29 | 98 |
IV.CESI.HHZ. | 2021-10-31T22:16:54.66 | 0.6 | undecidable | manual | P | 323 | 27.9498 | 50 | -0.05 | 67 |
IV.FDMO.HHZ. | 2021-10-31T22:16:54.07 | 1.0 | undecidable | manual | P | 355 | 25.752 | 50 | -0.3 | 32 |
IV.SMA1.EHZ. | 2021-10-31T22:16:54.66 | 1.0 | undecidable | manual | P | 137 | 26.4513 | 50 | 0.18 | 33 |
IV.MTRA.EHZ. | 2021-10-31T22:16:54.18 | 1.0 | undecidable | manual | P | 103 | 23.6541 | 113 | 0.14 | 33 |
IV.MMO1.EHZ. | 2021-10-31T22:16:53.39 | 0.6 | undecidable | manual | P | 59 | 20.2686 | 117 | -0.03 | 68 |
IV.MC2.EHZ. | 2021-10-31T22:16:52.25 | 1.0 | positive | manual | P | 27 | 13.2756 | 128 | 0.01 | 35 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.LNSS.HHE. | ML:0.7 | 0.000034472950000000003 | 0.1536 | AML | other | m | 2021-10-31T22:16:58.43 |
IV.LNSS.HHN. | ML:0.6 | 0.000025824975 | 0.1536 | AML | other | m | 2021-10-31T22:16:58.56 |
IV.LNSS.HNE. | ML:1.2 | 0.00009754997 | 0.4736 | AML | other | m | 2021-10-31T22:16:59.64 |
IV.LNSS.HNN. | ML:1.3 | 0.00012983324 | 0.6656 | AML | other | m | 2021-10-31T22:16:59.26 |
IV.FDMO.HHE. | ML:0.2 | 0.0000091682 | 0.0896 | AML | other | m | 2021-10-31T22:16:59.53 |
IV.FDMO.HHN. | ML:0.2 | 0.000012039125 | 0.1024 | AML | other | m | 2021-10-31T22:16:58.41 |
IV.MTRA.EHE. | ML:0.4 | 0.000016586733 | 0.2944 | AML | other | m | 2021-10-31T22:17:02.19 |
IV.MTRA.EHN. | ML:0.6 | 0.000023333775000000002 | 0.32 | AML | other | m | 2021-10-31T22:17:00.05 |
IV.CESI.HHE. | ML:0.3 | 0.000009083278999999999 | 0.1792 | AML | other | m | 2021-10-31T22:17:00.04 |
IV.CESI.HHN. | ML:0.3 | 0.000010161854000000001 | 0.1792 | AML | other | m | 2021-10-31T22:17:00.28 |
IV.SMA1.EHN. | ML:0.3 | 0.00001138481 | 0.1152 | AML | other | m | 2021-10-31T22:16:59.96 |
IV.TERO.HHN. | ML:0.7 | 0.0000125219775 | 0.0768 | AML | other | m | 2021-10-31T22:17:04.12 |