A magnitude ML 0.8 earthquake occured in region: 6 km W Accumoli (RI), on
and geographic coordinates (lat, lon) 42.7220, 13.1780 at 9 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 |
---|---|---|---|---|
Accumoli | RI | 7 | 667 | 667 |
Norcia | PG | 11 | 4957 | 5624 |
Arquata del Tronto | AP | 11 | 1178 | 6802 |
Cittareale | RI | 12 | 482 | 7284 |
Cascia | PG | 13 | 3217 | 10501 |
Amatrice | RI | 14 | 2657 | 13158 |
Montegallo | AP | 19 | 523 | 13681 |
Castelsantangelo sul Nera | MC | 19 | 281 | 13962 |
Acquasanta Terme | AP | 20 | 2916 | 16878 |
Poggiodomo | PG | 20 | 117 | 16995 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.8 | 2021-08-21 03:12:04 |
42.7225 | 13.1782 | 9 | 2021-08-21 03:16:12 |
Sala Sismica INGV-Roma | 94450041 |
Field | Value |
---|---|
Time (UTC) | 2021-08-21 03:12:04 ± 0.2 |
Latitude | 42.7225 ± 0.0027 |
Longitude | 13.1782 ± 0.0037 |
Depth (km) | 9 ± 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 94450041 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 320 |
Semi-minor axis of confidence ellipse (meter) | 81 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 270 |
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) | 75 |
Number of associated phases, regardless of their use for origin computation | 19 |
Number of defining phases | 15 |
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) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.21494 |
Number of stations at which the event was observed | 12 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 0.8 |
Uncertainty | 0.1 |
Num. used stations | 10 |
Type of magnitude | ML |
Reference to an origin | 94450041 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-21 03:16:12 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.RNI2.HHZ. | 2021-08-21T03:12:44.62 | 3.0 | undecidable | manual | S | 0 | 0 | |||
IV.RMP.HHZ. | 2021-08-21T03:12:20.71 | 3.0 | negative | manual | P | -2.4 | 0 | |||
IV.RM33.EHZ. | 2021-08-21T03:12:13.03 | 0.1 | undecidable | manual | S | 173 | 23.8539 | 111 | -0.09 | 100 |
IV.MC2.EHZ. | 2021-08-21T03:12:12.50 | 0.1 | undecidable | manual | S | 2 | 20.9679 | 114 | 0.31 | 96 |
IV.CSP1.EHZ. | 2021-08-21T03:12:12.15 | 3.0 | undecidable | manual | P | 0.15 | 0 | |||
IV.MMO1.EHZ. | 2021-08-21T03:12:12.62 | 0.3 | undecidable | manual | S | 32 | 23.0547 | 112 | -0.24 | 73 |
IV.GAVE.EHZ. | 2021-08-21T03:12:12.81 | 0.3 | undecidable | manual | S | 262 | 23.3544 | 112 | -0.16 | 74 |
IV.TERO.HHZ. | 2021-08-21T03:12:11.13 | 3.0 | undecidable | manual | P | -0.12 | 0 | |||
IV.SMA1.EHZ. | 2021-08-21T03:12:11.01 | 0.3 | undecidable | manual | S | 128 | 16.3725 | 120 | 0.24 | 74 |
IV.MTRA.EHZ. | 2021-08-21T03:12:11.10 | 0.3 | undecidable | manual | S | 78 | 18.1707 | 117 | -0.22 | 74 |
IV.GAVE.EHZ. | 2021-08-21T03:12:09.21 | 0.6 | positive | manual | P | 262 | 23.3544 | 112 | -0.06 | 50 |
IV.RM33.EHZ. | 2021-08-21T03:12:09.25 | 1.0 | positive | manual | P | 173 | 23.8539 | 111 | -0.11 | 25 |
IV.NRCA.HHZ. | 2021-08-21T03:12:09.80 | 0.3 | undecidable | manual | S | 337 | 13.3755 | 125 | -0.09 | 76 |
IV.MC2.EHZ. | 2021-08-21T03:12:09.03 | 1.0 | undecidable | manual | P | 2 | 20.9679 | 114 | 0.2 | 25 |
IV.MMO1.EHZ. | 2021-08-21T03:12:09.09 | 0.6 | negative | manual | P | 32 | 23.0547 | 112 | -0.12 | 50 |
IV.SMA1.EHZ. | 2021-08-21T03:12:08.18 | 0.6 | undecidable | manual | P | 128 | 16.3725 | 120 | 0.17 | 50 |
IV.LNSS.HHE. | 2021-08-21T03:12:08.35 | 0.3 | undecidable | manual | P | 220 | 17.3715 | 118 | 0.17 | 75 |
IV.MTRA.EHZ. | 2021-08-21T03:12:08.29 | 0.3 | undecidable | manual | P | 78 | 18.1707 | 117 | -0.04 | 77 |
IV.NRCA.HHZ. | 2021-08-21T03:12:07.53 | 0.6 | undecidable | manual | P | 337 | 13.3755 | 125 | 0.04 | 51 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHN. | ML:1.0 | 0.0000986 | 1.28 | AML | other | m | 2021-08-21T03:12:09.89 |
IV.NRCA.HHE. | ML:1.0 | 0.0001079 | 0.16 | AML | other | m | 2021-08-21T03:12:10.08 |
IV.SMA1.EHN. | ML:0.6 | 0.0000402 | 1.12 | AML | other | m | 2021-08-21T03:12:11.95 |
IV.MTRA.EHN. | ML:0.7 | 0.00004195 | 0.7 | AML | other | m | 2021-08-21T03:12:11.57 |
IV.SMA1.EHE. | ML:0.9 | 0.00006575 | 0.8 | AML | other | m | 2021-08-21T03:12:11.99 |
IV.MTRA.EHE. | ML:0.9 | 0.00006254999999999999 | 1 | AML | other | m | 2021-08-21T03:12:11.23 |
IV.GAVE.EHN. | ML:0.8 | 0.00004 | 0.84 | AML | other | m | 2021-08-21T03:12:13.03 |
IV.GAVE.EHE. | ML:0.7 | 0.00003195 | 0.92 | AML | other | m | 2021-08-21T03:12:13.75 |
IV.RM33.EHE. | ML:0.8 | 0.00003795 | 0.9 | AML | other | m | 2021-08-21T03:12:13.35 |
IV.RM33.EHN. | ML:0.6 | 0.0000257 | 0.98 | AML | other | m | 2021-08-21T03:12:13.16 |