A magnitude ML 0.9 earthquake occured in region: 6 km N Acquasanta Terme (AP), on
and geographic coordinates (lat, lon) 42.8250, 13.4100 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 |
---|---|---|---|---|
Acquasanta Terme | AP | 6 | 2916 | 2916 |
Montegallo | AP | 7 | 523 | 3439 |
Roccafluvione | AP | 7 | 2010 | 5449 |
Palmiano | AP | 9 | 196 | 5645 |
Venarotta | AP | 9 | 2066 | 7711 |
Montemonaco | AP | 11 | 604 | 8315 |
Arquata del Tronto | AP | 11 | 1178 | 9493 |
Valle Castellana | TE | 12 | 977 | 10470 |
Ascoli Piceno | AP | 14 | 49407 | 59877 |
Montefortino | FM | 14 | 1178 | 61055 |
Comunanza | AP | 15 | 3166 | 64221 |
Force | AP | 17 | 1354 | 65575 |
Amandola | FM | 18 | 3629 | 69204 |
Rocca Santa Maria | TE | 18 | 537 | 69741 |
Folignano | AP | 18 | 9241 | 78982 |
Montefalcone Appennino | FM | 19 | 424 | 79406 |
Rotella | AP | 19 | 906 | 80312 |
Accumoli | RI | 20 | 667 | 80979 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2021-04-19 20:20:19 |
42.825 | 13.41 | 16 | 2021-04-19 20:30:12 |
Sala Sismica INGV-Roma | 89268351 |
Field | Value |
---|---|
Time (UTC) | 2021-04-19 20:20:19 ± 0.08 |
Latitude | 42.8250 ± 0.0027 |
Longitude | 13.4100 ± 0.0049 |
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 | 89268351 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 340 |
Semi-minor axis of confidence ellipse (meter) | 179 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 68 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 340.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 132 |
Number of associated phases, regardless of their use for origin computation | 18 |
Number of defining phases | 18 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.13 |
Epicentral distance of station closest to the epicenter (degree) | 0.06925 |
Epicentral distance of station farthest from the epicenter (degree) | 0.31656 |
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 | 0.9 |
Uncertainty | 0.4 |
Num. used stations | 4 |
Type of magnitude | ML |
Reference to an origin | 89268351 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-04-19 20:30:12 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CSP1.EHZ. | 2021-04-19T20:20:30.81 | 0.3 | undecidable | manual | S | 331 | 33.9438 | 102 | -0.02 | 72 |
IV.FDMO.HHZ. | 2021-04-19T20:20:30.97 | 0.6 | undecidable | manual | S | 312 | 35.1426 | 101 | -0.18 | 46 |
IV.TERO.HHZ. | 2021-04-19T20:20:29.05 | 0.3 | undecidable | manual | S | 145 | 27.4503 | 106 | -0.09 | 73 |
IV.SMA1.EHZ. | 2021-04-19T20:20:28.06 | 0.6 | undecidable | manual | S | 196 | 22.4553 | 112 | 0.19 | 48 |
IV.NRCA.HHZ. | 2021-04-19T20:20:28.35 | 0.3 | undecidable | manual | S | 272 | 24.0537 | 110 | 0.06 | 74 |
IV.MF5.EHZ. | 2021-04-19T20:20:27.29 | 0.6 | undecidable | manual | S | 13 | 18.4704 | 118 | 0.36 | 47 |
IV.MC2.EHN. | 2021-04-19T20:20:27.55 | 0.3 | undecidable | manual | S | 298 | 20.3685 | 115 | 0.17 | 73 |
IV.CSP1.EHZ. | 2021-04-19T20:20:25.77 | 1.0 | undecidable | manual | P | 331 | 33.9438 | 102 | -0.13 | 23 |
IV.FDMO.HHZ. | 2021-04-19T20:20:25.99 | 0.6 | undecidable | manual | P | 312 | 35.1426 | 101 | -0.1 | 47 |
IV.MMO1.EHZ. | 2021-04-19T20:20:25.08 | 0.6 | undecidable | manual | S | 321 | 10.6782 | 138 | -0.2 | 49 |
IV.NRCA.HHZ. | 2021-04-19T20:20:24.43 | 0.1 | undecidable | manual | P | 272 | 24.0537 | 110 | -0.01 | 99 |
IV.TERO.HHZ. | 2021-04-19T20:20:24.75 | 1.0 | undecidable | manual | P | 145 | 27.4503 | 106 | -0.18 | 24 |
IV.SMA1.EHZ. | 2021-04-19T20:20:24.29 | 0.6 | positive | manual | P | 196 | 22.4553 | 112 | 0.09 | 49 |
IV.MTRA.EHN. | 2021-04-19T20:20:24.60 | 0.6 | undecidable | manual | S | 188 | 7.6812 | 148 | -0.2 | 50 |
IV.MC2.EHN. | 2021-04-19T20:20:23.96 | 0.1 | undecidable | manual | P | 298 | 20.3685 | 115 | 0.05 | 100 |
IV.MF5.EHZ. | 2021-04-19T20:20:23.82 | 0.6 | negative | manual | P | 13 | 18.4704 | 118 | 0.17 | 49 |
IV.MTRA.EHN. | 2021-04-19T20:20:22.53 | 0.1 | undecidable | manual | P | 188 | 7.6812 | 148 | 0.11 | 100 |
IV.MMO1.EHZ. | 2021-04-19T20:20:22.56 | 0.1 | undecidable | manual | P | 321 | 10.6782 | 138 | -0.14 | 98 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHN. | ML:1.2 | 0.00008044999999999999 | 0.1 | AML | other | m | 2021-04-19T20:20:29.18 |
IV.NRCA.HHE. | ML:1.3 | 0.00009984999999999999 | 0.42 | AML | other | m | 2021-04-19T20:20:29.50 |
IV.TERO.HHN. | ML:0.5 | 0.0000135 | 0.82 | AML | other | m | 2021-04-19T20:20:29.50 |
IV.TERO.HHE. | ML:0.5 | 0.000013599999999999999 | 0.62 | AML | other | m | 2021-04-19T20:20:30.24 |