A magnitude ML 1.0 earthquake occured in region: Acquasparta (TR), on
and geographic coordinates (lat, lon) 42.6940, 12.5450 at 8 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 |
---|---|---|---|---|
Acquasparta | TR | 0 | 4778 | 4778 |
Montecastrilli | TR | 7 | 5022 | 9800 |
San Gemini | TR | 9 | 5018 | 14818 |
Massa Martana | PG | 9 | 3770 | 18588 |
Avigliano Umbro | TR | 10 | 2558 | 21146 |
Todi | PG | 15 | 16851 | 37997 |
Giano dell'Umbria | PG | 16 | 3846 | 41843 |
Spoleto | PG | 17 | 38218 | 80061 |
Terni | TR | 17 | 111501 | 191562 |
Castel Ritaldi | PG | 18 | 3278 | 194840 |
Amelia | TR | 18 | 11897 | 206737 |
Narni | TR | 20 | 19785 | 226522 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.0 | 2021-08-31 22:04:27 |
42.694 | 12.5448 | 8 | 2021-08-31 22:09:54 |
Sala Sismica INGV-Roma | 94887981 |
Field | Value |
---|---|
Time (UTC) | 2021-08-31 22:04:27 ± 0.09 |
Latitude | 42.6940 ± 0.0036 |
Longitude | 12.5448 ± 0.0086 |
Depth (km) | 8 ± 1 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 94887981 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 719 |
Semi-minor axis of confidence ellipse (meter) | 169 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 66 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 720.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 145 |
Number of associated phases, regardless of their use for origin computation | 17 |
Number of defining phases | 15 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.24 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.38491 |
Number of stations at which the event was observed | 10 |
Number of stations from which data was used for origin computation | 8 |
Field | Value |
---|---|
Value | 1.0 |
Uncertainty | 0.2 |
Num. used stations | 8 |
Type of magnitude | ML |
Reference to an origin | 94887981 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-31 22:09:54 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.MPPT.EHZ. | 2021-08-31T22:05:21.95 | 3.0 | undecidable | manual | Sg | 2.57 | 0 | |||
IV.MNTT.EHZ. | 2021-08-31T22:04:57.05 | 3.0 | undecidable | manual | S | -0.2 | 0 | |||
IV.LNSS.HHE. | 2021-08-31T22:04:42.66 | 0.3 | undecidable | manual | S | 104 | 41.625 | 50 | 0.55 | 63 |
IV.MGAB.HHZ. | 2021-08-31T22:04:42.83 | 0.3 | undecidable | manual | S | 305 | 42.7239 | 50 | 0.44 | 65 |
IV.ASSB.HHZ. | 2021-08-31T22:04:41.24 | 0.3 | undecidable | manual | S | 13 | 39.7269 | 50 | -0.35 | 67 |
IV.MGAB.HHZ. | 2021-08-31T22:04:36.05 | 0.1 | undecidable | manual | P | 305 | 42.7239 | 50 | -0.21 | 91 |
IV.ARRO.EHZ. | 2021-08-31T22:04:36.02 | 0.3 | undecidable | manual | S | 125 | 22.0668 | 110 | -0.02 | 74 |
IV.ASSB.HHZ. | 2021-08-31T22:04:35.50 | 0.1 | undecidable | manual | P | 13 | 39.7269 | 50 | -0.29 | 90 |
IV.LNSS.HHE. | 2021-08-31T22:04:35.87 | 0.3 | undecidable | manual | P | 104 | 41.625 | 50 | -0.22 | 68 |
IT.GNU.HGZ. | 2021-08-31T22:04:33.01 | 0.1 | undecidable | manual | S | 10 | 12.3765 | 123 | 0 | 100 |
IV.MOMA.HHZ. | 2021-08-31T22:04:33.02 | 0.1 | undecidable | manual | S | 10 | 12.3765 | 123 | 0.01 | 100 |
IV.GAVE.HNZ. | 2021-08-31T22:04:33.77 | 0.1 | undecidable | manual | P | 90 | 28.4493 | 106 | -0.04 | 97 |
IV.ARRO.EHZ. | 2021-08-31T22:04:32.62 | 0.1 | undecidable | manual | P | 125 | 22.0668 | 110 | 0.03 | 98 |
IV.CESX.HHZ. | 2021-08-31T22:04:32.27 | 0.3 | undecidable | manual | S | 160 | 10.0788 | 129 | -0.11 | 74 |
IT.GNU.HGZ. | 2021-08-31T22:04:31.04 | 0.1 | undecidable | manual | P | 10 | 12.3765 | 123 | 0.2 | 96 |
IV.MOMA.HHZ. | 2021-08-31T22:04:31.00 | 0.1 | positive | manual | P | 10 | 12.3765 | 123 | 0.16 | 97 |
IV.CESX.HHZ. | 2021-08-31T22:04:30.40 | 0.1 | undecidable | manual | P | 160 | 10.0788 | 129 | -0.08 | 99 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.MOMA.HHN. | ML:1.2 | 0.000187 | 0.2 | AML | other | m | 2021-08-31T22:04:33.07 |
IV.CESX.HHN. | ML:1.1 | 0.000183 | 0.56 | AML | other | m | 2021-08-31T22:04:33.50 |
IV.MOMA.HHE. | ML:1.2 | 0.000203 | 0.46 | AML | other | m | 2021-08-31T22:04:34.69 |
IV.CESX.HHE. | ML:1.0 | 0.000143 | 0.72 | AML | other | m | 2021-08-31T22:04:34.52 |
IV.ARRO.EHN. | ML:0.8 | 0.000038650000000000004 | 0.32 | AML | other | m | 2021-08-31T22:04:38.24 |
IV.ARRO.EHE. | ML:0.8 | 0.00004035 | 0.78 | AML | other | m | 2021-08-31T22:04:39.04 |
IV.MGAB.HHN. | ML:0.7 | 0.000016800000000000002 | 0.14 | AML | other | m | 2021-08-31T22:04:43.90 |
IV.MGAB.HHE. | ML:0.9 | 0.0000234 | 0.72 | AML | other | m | 2021-08-31T22:04:44.12 |