A magnitude ML 0.9 earthquake occured in region: 4 km NW Arquata del Tronto (AP), on
and geographic coordinates (lat, lon) 42.7940, 13.2560 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 |
---|---|---|---|---|
Arquata del Tronto | AP | 4 | 1178 | 1178 |
Montegallo | AP | 8 | 523 | 1701 |
Accumoli | RI | 11 | 667 | 2368 |
Acquasanta Terme | AP | 13 | 2916 | 5284 |
Norcia | PG | 13 | 4957 | 10241 |
Montemonaco | AP | 13 | 604 | 10845 |
Castelsantangelo sul Nera | MC | 14 | 281 | 11126 |
Montefortino | FM | 18 | 1178 | 12304 |
Amatrice | RI | 18 | 2657 | 14961 |
Ussita | MC | 19 | 444 | 15405 |
Roccafluvione | AP | 20 | 2010 | 17415 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2021-08-13 03:40:56 |
42.7942 | 13.2557 | 10 | 2021-08-13 03:49:05 |
Sala Sismica INGV-Roma | 94053901 |
Field | Value |
---|---|
Time (UTC) | 2021-08-13 03:40:56 ± 0.05 |
Latitude | 42.7942 ± 0.0027 |
Longitude | 13.2557 ± 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 | 94053901 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 379 |
Semi-minor axis of confidence ellipse (meter) | 185 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 77 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 380.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 72 |
Number of associated phases, regardless of their use for origin computation | 27 |
Number of defining phases | 20 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.18 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.30757 |
Number of stations at which the event was observed | 17 |
Number of stations from which data was used for origin computation | 10 |
Field | Value |
---|---|
Value | 0.9 |
Uncertainty | 0.2 |
Num. used stations | 17 |
Type of magnitude | ML |
Reference to an origin | 94053901 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-08-13 03:49:05 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.COR1.EHZ. | 2021-08-13T03:41:23.74 | 3.0 | undecidable | manual | S | -0.14 | 0 | |||
IV.ARVD.HHZ. | 2021-08-13T03:41:20.41 | 3.0 | undecidable | manual | S | -0.67 | 0 | |||
IV.TERO.HHZ. | 2021-08-13T03:41:08.33 | 0.6 | undecidable | manual | S | 124 | 34.1436 | 50 | -0.35 | 45 |
IV.RM33.EHZ. | 2021-08-13T03:41:08.20 | 0.6 | undecidable | manual | S | 186 | 31.8459 | 50 | 0.15 | 47 |
IV.MF5.EHZ. | 2021-08-13T03:41:07.24 | 0.3 | undecidable | manual | S | 38 | 27.1506 | 50 | 0.44 | 67 |
IV.LNSS.HNZ. | 2021-08-13T03:41:06.76 | 0.3 | undecidable | manual | S | 220 | 27.5502 | 50 | -0.15 | 71 |
IV.SMA1.EHZ. | 2021-08-13T03:41:04.36 | 0.3 | undecidable | manual | S | 160 | 19.2696 | 118 | -0.06 | 74 |
IV.T1299.HNZ. | 2021-08-13T03:41:04.34 | 0.3 | undecidable | manual | S | 173 | 17.871 | 119 | 0.35 | 70 |
IV.MML1.EHZ. | 2021-08-13T03:41:04.63 | 3.0 | negative | manual | P | 0.4 | 0 | |||
IV.RM33.EHZ. | 2021-08-13T03:41:03.43 | 0.6 | undecidable | manual | P | 186 | 31.8459 | 50 | 0.1 | 48 |
IV.CESI.HHZ. | 2021-08-13T03:41:03.79 | 3.0 | positive | manual | P | 0.27 | 0 | |||
IV.CSP1.EHZ. | 2021-08-13T03:41:03.10 | 3.0 | negative | manual | P | 0.37 | 0 | |||
IV.TERO.HHZ. | 2021-08-13T03:41:03.46 | 0.6 | undecidable | manual | P | 124 | 34.1436 | 50 | -0.23 | 46 |
IV.MC2.EHZ. | 2021-08-13T03:41:03.03 | 0.3 | undecidable | manual | S | 337 | 14.0748 | 126 | 0.15 | 73 |
IV.GAVE.EHZ. | 2021-08-13T03:41:03.06 | 3.0 | positive | manual | P | 0.3 | 0 | |||
IV.MTRA.EHZ. | 2021-08-13T03:41:02.20 | 0.3 | undecidable | manual | S | 110 | 12.1767 | 129 | -0.16 | 73 |
IV.FDMO.HHZ. | 2021-08-13T03:41:02.57 | 3.0 | negative | manual | P | 0.13 | 0 | |||
IV.NRCA.HHZ. | 2021-08-13T03:41:02.24 | 0.3 | undecidable | manual | S | 291 | 12.2766 | 129 | -0.15 | 73 |
IV.MMO1.EHZ. | 2021-08-13T03:41:02.30 | 0.3 | undecidable | manual | S | 26 | 12.9759 | 128 | -0.28 | 71 |
IV.LNSS.HNZ. | 2021-08-13T03:41:02.43 | 0.3 | undecidable | manual | P | 220 | 27.5502 | 50 | -0.24 | 70 |
IV.MF5.EHZ. | 2021-08-13T03:41:02.59 | 0.6 | undecidable | manual | P | 38 | 27.1506 | 50 | -0.02 | 49 |
IV.T1299.HNZ. | 2021-08-13T03:41:01.23 | 0.3 | undecidable | manual | P | 173 | 17.871 | 119 | 0.25 | 71 |
IV.SMA1.EHZ. | 2021-08-13T03:41:01.19 | 0.6 | undecidable | manual | P | 160 | 19.2696 | 118 | -0.04 | 49 |
IV.MC2.EHZ. | 2021-08-13T03:41:00.37 | 0.1 | negative | manual | P | 337 | 14.0748 | 126 | 0.03 | 100 |
IV.MTRA.EHZ. | 2021-08-13T03:41:00.14 | 0.3 | undecidable | manual | P | 110 | 12.1767 | 129 | 0.1 | 74 |
IV.NRCA.HHZ. | 2021-08-13T03:41:00.09 | 0.1 | negative | manual | P | 291 | 12.2766 | 129 | 0.03 | 100 |
IV.MMO1.EHZ. | 2021-08-13T03:41:00.10 | 0.6 | negative | manual | P | 26 | 12.9759 | 128 | -0.07 | 50 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.SMA1.EHN. | ML:0.7 | 0.0000391 | 0.2 | AML | other | m | 2021-08-13T03:41:04.53 |
IV.SMA1.EHE. | ML:0.6 | 0.00003075 | 0.08 | AML | other | m | 2021-08-13T03:41:04.63 |
IV.GAVE.EHE. | ML:0.9 | 0.000037099999999999994 | 0.88 | AML | other | m | 2021-08-13T03:41:08.14 |
IV.GAVE.EHN. | ML:0.9 | 0.00003452463 | 0.2 | AML | other | m | 2021-08-13T03:41:08.40 |
IV.CSP1.EHE. | ML:0.8 | 0.00002427387 | 0.12 | AML | other | m | 2021-08-13T03:41:08.34 |
IV.TERO.HHN. | ML:0.8 | 0.000025852090000000002 | 0.16 | AML | other | m | 2021-08-13T03:41:08.85 |
IV.CESI.HHE. | ML:1.1 | 0.000048899999999999996 | 0.16 | AML | other | m | 2021-08-13T03:41:09.26 |
IV.CESI.HHN. | ML:1.3 | 0.00006845 | 0.14 | AML | other | m | 2021-08-13T03:41:09.57 |
IV.CSP1.EHN. | ML:1.0 | 0.000040767015 | 0.3408 | AML | other | m | 2021-08-13T03:41:08.11 |
IV.MTRA.EHE. | ML:0.9 | 0.00009525132 | 0.12 | AML | other | m | 2021-08-13T03:41:02.65 |
IV.MTRA.EHN. | ML:1.0 | 0.000105331275 | 0.24 | AML | other | m | 2021-08-13T03:41:02.86 |
IV.MTRA.HNE. | ML:1.1 | 0.00013402701 | 0.3712 | AML | other | m | 2021-08-13T03:41:02.98 |
IV.MTRA.HNN. | ML:1.0 | 0.000097502255 | 0.2496 | AML | other | m | 2021-08-13T03:41:02.98 |
IV.MF5.EHE. | ML:0.8 | 0.00003231574 | 0.28 | AML | other | m | 2021-08-13T03:41:07.57 |
IV.MF5.EHN. | ML:0.8 | 0.000030559395 | 0.12 | AML | other | m | 2021-08-13T03:41:07.40 |
IV.RM33.EHE. | ML:0.5 | 0.00001559737 | 0.1808 | AML | other | m | 2021-08-13T03:41:08.62 |
IV.RM33.EHN. | ML:0.5 | 0.000016750615 | 0.2192 | AML | other | m | 2021-08-13T03:41:08.18 |