A magnitude ML 1.1 earthquake occured in region: 9 km NW Arquata del Tronto (AP), on
and geographic coordinates (lat, lon) 42.8320, 13.2280 at 16 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 |
---|---|---|---|---|
Arquata del Tronto | AP | 9 | 1178 | 1178 |
Montegallo | AP | 9 | 523 | 1701 |
Castelsantangelo sul Nera | MC | 9 | 281 | 1982 |
Montemonaco | AP | 11 | 604 | 2586 |
Norcia | PG | 12 | 4957 | 7543 |
Ussita | MC | 15 | 444 | 7987 |
Accumoli | RI | 15 | 667 | 8654 |
Montefortino | FM | 16 | 1178 | 9832 |
Visso | MC | 16 | 1107 | 10939 |
Preci | PG | 16 | 724 | 11663 |
Acquasanta Terme | AP | 16 | 2916 | 14579 |
Bolognola | MC | 18 | 142 | 14721 |
Amandola | FM | 20 | 3629 | 18350 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.1 | 2021-08-19 14:46:59 |
42.8317 | 13.228 | 16 | 2021-08-19 14:58:37 |
Sala Sismica INGV-Roma | 94378021 |
Field | Value |
---|---|
Time (UTC) | 2021-08-19 14:46:59 ± 0.09 |
Latitude | 42.8317 ± 0.0027 |
Longitude | 13.2280 ± 0.0074 |
Depth (km) | 16 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 94378021 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 539 |
Semi-minor axis of confidence ellipse (meter) | 221 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 75 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 540.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 89 |
Number of associated phases, regardless of their use for origin computation | 17 |
Number of defining phases | 16 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.14 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.34624 |
Number of stations at which the event was observed | 11 |
Number of stations from which data was used for origin computation | 10 |
Field | Value |
---|---|
Value | 1.1 |
Uncertainty | 0.4 |
Num. used stations | 14 |
Type of magnitude | ML |
Reference to an origin | 94378021 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-19 14:58:37 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.TRTR.HHZ. | 2021-08-19T14:47:16.72 | 3.0 | undecidable | manual | S | -1.05 | 0 | |||
IV.FDMO.HHZ. | 2021-08-19T14:47:08.36 | 0.6 | undecidable | manual | S | 333 | 25.4523 | 110 | -0.16 | 49 |
IT.MTCL.HGZ. | 2021-08-19T14:47:08.62 | 0.3 | undecidable | manual | S | 314 | 25.8519 | 109 | -0.01 | 76 |
IV.SMA1.EHZ. | 2021-08-19T14:47:08.16 | 0.6 | undecidable | manual | S | 159 | 23.9538 | 111 | 0 | 50 |
IV.RM33.EHZ. | 2021-08-19T14:47:06.19 | 0.6 | negative | manual | P | 182 | 35.8419 | 102 | 0.14 | 48 |
IV.TERO.HHZ. | 2021-08-19T14:47:06.21 | 1.0 | undecidable | manual | P | 127 | 38.4282 | 101 | -0.23 | 23 |
IV.MC2.EHZ. | 2021-08-19T14:47:05.19 | 0.3 | undecidable | manual | S | 340 | 9.3795 | 143 | 0.18 | 76 |
IV.MTRA.EHZ. | 2021-08-19T14:47:05.99 | 0.6 | undecidable | manual | S | 121 | 16.0728 | 125 | -0.3 | 48 |
IV.SMA1.EHZ. | 2021-08-19T14:47:04.41 | 0.1 | undecidable | manual | P | 159 | 23.9538 | 111 | 0.11 | 100 |
IV.CSP1.EHZ. | 2021-08-19T14:47:04.99 | 0.6 | undecidable | manual | P | 356 | 28.9488 | 106 | -0.03 | 50 |
IV.FDMO.HHZ. | 2021-08-19T14:47:04.24 | 0.6 | positive | manual | P | 333 | 25.4523 | 110 | -0.27 | 48 |
IV.NRCA.HHZ. | 2021-08-19T14:47:04.85 | 0.3 | undecidable | manual | S | 271 | 9.2796 | 144 | -0.13 | 76 |
IV.MF5.EHZ. | 2021-08-19T14:47:04.80 | 0.6 | undecidable | manual | P | 47 | 25.5522 | 110 | 0.27 | 48 |
IT.MTCL.HGZ. | 2021-08-19T14:47:04.27 | 1.0 | undecidable | manual | P | 314 | 25.8519 | 109 | -0.3 | 24 |
IV.MTRA.EHZ. | 2021-08-19T14:47:03.15 | 1.0 | negative | manual | P | 121 | 16.0728 | 125 | -0.07 | 25 |
IV.NRCA.HHZ. | 2021-08-19T14:47:02.54 | 0.3 | undecidable | manual | P | 271 | 9.2796 | 144 | 0.07 | 77 |
IV.MC2.EHZ. | 2021-08-19T14:47:02.58 | 0.3 | undecidable | manual | P | 340 | 9.3795 | 143 | 0.1 | 77 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HNE. | ML:1.9 | 0.0007675906500000001 | 0.1024 | AML | other | m | 2021-08-19T14:47:04.96 |
IV.NRCA.HHE. | ML:1.9 | 0.0008075 | 1.9 | AML | other | m | 2021-08-19T14:47:05.96 |
IV.NRCA.HHN. | ML:1.9 | 0.0008149652499999999 | 0.1408 | AML | other | m | 2021-08-19T14:47:05.08 |
IV.NRCA.HNN. | ML:1.9 | 0.00071606385 | 0.1536 | AML | other | m | 2021-08-19T14:47:05.08 |
IV.MTRA.EHE. | ML:0.0 | 0.00007487718000000001 | 0.1408 | AML | other | m | 2021-08-19T14:47:06.26 |
IV.MTRA.EHN. | ML:0.0 | 0.00004284209 | 0.1024 | AML | other | m | 2021-08-19T14:47:07.22 |
IV.FDMO.HHE. | ML:0.5 | 0.00001687695 | 0.224 | AML | other | m | 2021-08-19T14:47:09.35 |
IV.FDMO.HHN. | ML:0.7 | 0.00002535 | 0.8 | AML | other | m | 2021-08-19T14:47:09.37 |
IV.MTRA.HNE. | ML:1.0 | 0.000071100385 | 0.0704 | AML | other | m | 2021-08-19T14:47:06.25 |
IV.MTRA.HNN. | ML:1.0 | 0.00007550120000000001 | 0.8896 | AML | other | m | 2021-08-19T14:47:06.62 |
IV.MF5.EHE. | ML:1.1 | 0.00006368647500000001 | 0.4416 | AML | other | m | 2021-08-19T14:47:09.49 |
IV.MF5.EHN. | ML:1.0 | 0.00004946591 | 0.5952 | AML | other | m | 2021-08-19T14:47:09.55 |
IV.CSP1.EHE. | ML:1.2 | 0.000067145955 | 0.1792 | AML | other | m | 2021-08-19T14:47:09.54 |
IV.CSP1.EHN. | ML:1.1 | 0.00006217333499999999 | 0.1216 | AML | other | m | 2021-08-19T14:47:10.37 |
IV.RM33.EHE. | ML:0.0 | 0.00002973644 | 0.2816 | AML | other | m | 2021-08-19T14:47:11.96 |
IV.RM33.EHN. | ML:0.0 | 0.000018387935 | 0.16 | AML | other | m | 2021-08-19T14:47:12.30 |