A magnitude ML 0.9 earthquake occured in region: 7 km E Norcia (PG), on
and geographic coordinates (lat, lon) 42.7740, 13.1750 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 | 7 | 4957 | 4957 |
Arquata del Tronto | AP | 10 | 1178 | 6135 |
Accumoli | RI | 11 | 667 | 6802 |
Castelsantangelo sul Nera | MC | 14 | 281 | 7083 |
Cascia | PG | 15 | 3217 | 10300 |
Montegallo | AP | 15 | 523 | 10823 |
Preci | PG | 16 | 724 | 11547 |
Cittareale | RI | 17 | 482 | 12029 |
Amatrice | RI | 19 | 2657 | 14686 |
Montemonaco | AP | 19 | 604 | 15290 |
Visso | MC | 19 | 1107 | 16397 |
Acquasanta Terme | AP | 19 | 2916 | 19313 |
Ussita | MC | 19 | 444 | 19757 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2021-07-20 21:05:10 |
42.7738 | 13.1748 | 10 | 2021-07-20 21:11:18 |
Sala Sismica INGV-Roma | 92999101 |
Field | Value |
---|---|
Time (UTC) | 2021-07-20 21:05:10 ± 0.06 |
Latitude | 42.7738 ± 0.0027 |
Longitude | 13.1748 ± 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 | 92999101 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 317 |
Semi-minor axis of confidence ellipse (meter) | 169 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 278 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 320.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 74 |
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) | 0.2 |
Epicentral distance of station closest to the epicenter (degree) | 0.07464 |
Epicentral distance of station farthest from the epicenter (degree) | 0.46225 |
Number of stations at which the event was observed | 12 |
Number of stations from which data was used for origin computation | 12 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.4 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 92999101 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-07-20 21:11:18 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.RM33.EHZ. | 2021-07-20T21:05:20.24 | 0.3 | undecidable | manual | S | 174 | 29.5482 | 50 | -0.34 | 69 |
IV.FDMO.HHZ. | 2021-07-20T21:05:20.61 | 0.6 | undecidable | manual | S | 346 | 30.0477 | 50 | -0.1 | 48 |
IV.CESX.HHZ. | 2021-07-20T21:05:19.92 | 0.1 | undecidable | manual | P | 249 | 51.3153 | 50 | 0.44 | 87 |
IV.GAVE.HNZ. | 2021-07-20T21:05:19.30 | 0.3 | undecidable | manual | S | 249 | 24.5532 | 112 | 0.06 | 74 |
IV.LNSS.HNZ. | 2021-07-20T21:05:18.26 | 0.3 | undecidable | manual | S | 210 | 21.867 | 115 | -0.12 | 73 |
IV.SMA1.EHZ. | 2021-07-20T21:05:18.28 | 0.3 | undecidable | manual | S | 141 | 20.5683 | 116 | 0.32 | 71 |
IV.MMO1.EHZ. | 2021-07-20T21:05:17.10 | 0.6 | undecidable | manual | S | 42 | 18.6702 | 118 | -0.26 | 48 |
IV.T1299.HNZ. | 2021-07-20T21:05:17.21 | 0.6 | undecidable | manual | S | 151 | 17.7711 | 120 | 0.1 | 49 |
IV.FDMO.HHZ. | 2021-07-20T21:05:16.15 | 0.6 | undecidable | manual | P | 346 | 30.0477 | 50 | -0.04 | 49 |
IV.MTRA.HNZ. | 2021-07-20T21:05:16.87 | 0.6 | undecidable | manual | S | 96 | 18.1707 | 119 | -0.35 | 47 |
IV.MF5.EHZ. | 2021-07-20T21:05:16.77 | 0.1 | undecidable | manual | P | 44 | 33.1446 | 50 | 0.1 | 96 |
IV.MC2.EHZ. | 2021-07-20T21:05:16.81 | 0.6 | undecidable | manual | S | 4 | 15.2736 | 123 | 0.44 | 46 |
IV.RM33.EHZ. | 2021-07-20T21:05:15.84 | 0.6 | negative | manual | P | 174 | 29.5482 | 50 | -0.28 | 47 |
IV.GAVE.HNZ. | 2021-07-20T21:05:15.29 | 0.3 | undecidable | manual | P | 249 | 24.5532 | 112 | -0.05 | 74 |
IV.NRCA.HHZ. | 2021-07-20T21:05:14.19 | 0.6 | undecidable | manual | S | 323 | 8.2806 | 141 | -0.35 | 48 |
IV.T1299.HNZ. | 2021-07-20T21:05:14.16 | 0.1 | undecidable | manual | P | 151 | 17.7711 | 120 | 0.05 | 100 |
IV.MTRA.HNZ. | 2021-07-20T21:05:14.23 | 0.1 | undecidable | manual | P | 96 | 18.1707 | 119 | 0.05 | 100 |
IV.LNSS.HNZ. | 2021-07-20T21:05:14.69 | 0.1 | undecidable | manual | P | 210 | 21.867 | 115 | -0.16 | 97 |
IV.MMO1.EHZ. | 2021-07-20T21:05:14.03 | 0.6 | positive | manual | P | 42 | 18.6702 | 118 | -0.22 | 48 |
IV.SMA1.EHZ. | 2021-07-20T21:05:14.80 | 0.1 | undecidable | manual | P | 141 | 20.5683 | 116 | 0.19 | 97 |
IV.MC2.EHZ. | 2021-07-20T21:05:13.76 | 0.3 | positive | manual | P | 4 | 15.2736 | 123 | 0.07 | 75 |
IV.NRCA.HHZ. | 2021-07-20T21:05:12.55 | 0.6 | undecidable | manual | P | 323 | 8.2806 | 141 | -0.08 | 50 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHN. | ML:1.0 | 0.000155 | 0.16 | AML | other | m | 2021-07-20T21:05:14.39 |
IV.NRCA.HHE. | ML:1.4 | 0.0003305 | 0.08 | AML | other | m | 2021-07-20T21:05:14.40 |
IV.RM33.EHE. | ML:0.6 | 0.00001835 | 1.16 | AML | other | m | 2021-07-20T21:05:20.92 |
IV.RM33.EHN. | ML:0.7 | 0.000022800000000000002 | 0.96 | AML | other | m | 2021-07-20T21:05:21.14 |
IV.FDMO.HHN. | ML:0.5 | 0.00001415 | 0.92 | AML | other | m | 2021-07-20T21:05:21.83 |
IV.FDMO.HHE. | ML:0.3 | 0.000012479999999999997 | 0.88 | AML | other | m | 2021-07-20T21:05:21.96 |
IV.NRCA.HNE. | ML:1.3 | 0.0002804005 | 0.0768 | AML | other | m | 2021-07-20T21:05:14.37 |
IV.NRCA.HNN. | ML:1.0 | 0.00015581053 | 0.0768 | AML | other | m | 2021-07-20T21:05:14.36 |