A magnitude ML 0.9 earthquake occured in region: 2 km W Arquata del Tronto (AP), on
and geographic coordinates (lat, lon) 42.7840, 13.2710 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 | 3 | 1178 | 1178 |
Montegallo | AP | 8 | 523 | 1701 |
Accumoli | RI | 10 | 667 | 2368 |
Acquasanta Terme | AP | 11 | 2916 | 5284 |
Montemonaco | AP | 14 | 604 | 5888 |
Norcia | PG | 15 | 4957 | 10845 |
Castelsantangelo sul Nera | MC | 16 | 281 | 11126 |
Amatrice | RI | 17 | 2657 | 13783 |
Montefortino | FM | 19 | 1178 | 14961 |
Roccafluvione | AP | 19 | 2010 | 16971 |
Valle Castellana | TE | 19 | 977 | 17948 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 0.9 | 2021-09-25 21:07:04 |
42.7842 | 13.2713 | 10 | 2021-09-25 21:24:30 |
Sala Sismica INGV-Roma | 95879351 |
Field | Value |
---|---|
Time (UTC) | 2021-09-25 21:07:04 ± 0.08 |
Latitude | 42.7842 ± 0.0036 |
Longitude | 13.2713 ± 0.0074 |
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 | 95879351 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 639 |
Semi-minor axis of confidence ellipse (meter) | 193 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 88 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 640.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 129 |
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) | 0.23 |
Epicentral distance of station closest to the epicenter (degree) | 0.12231 |
Epicentral distance of station farthest from the epicenter (degree) | 0.31117 |
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 | 0.3 |
Num. used stations | 12 |
Type of magnitude | ML |
Reference to an origin | 95879351 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-09-25 21:24:30 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.CSP1.EHZ. | 2021-09-25T21:07:16.74 | 0.6 | undecidable | manual | S | 351 | 34.5432 | 50 | 0.03 | 49 |
IV.FDMO.HHZ. | 2021-09-25T21:07:15.67 | 0.6 | undecidable | manual | S | 332 | 31.746 | 50 | -0.29 | 47 |
IV.MF5.EHZ. | 2021-09-25T21:07:15.44 | 0.6 | undecidable | manual | S | 34 | 27.2505 | 50 | 0.66 | 42 |
IV.LNSS.HHZ. | 2021-09-25T21:07:14.79 | 0.3 | undecidable | manual | S | 223 | 27.5502 | 50 | -0.06 | 74 |
IV.T1299.EHZ. | 2021-09-25T21:07:12.03 | 0.3 | undecidable | manual | S | 177 | 16.6722 | 122 | 0.38 | 71 |
IV.MC2.EHZ. | 2021-09-25T21:07:11.59 | 0.6 | undecidable | manual | S | 335 | 15.5733 | 123 | 0.24 | 48 |
IV.FDMO.HHZ. | 2021-09-25T21:07:11.05 | 0.3 | undecidable | manual | P | 332 | 31.746 | 50 | -0.22 | 71 |
IV.SMA1.EHZ. | 2021-09-25T21:07:11.48 | 0.3 | undecidable | manual | S | 163 | 17.871 | 120 | -0.53 | 68 |
IV.CSP1.EHZ. | 2021-09-25T21:07:11.44 | 0.3 | undecidable | manual | P | 351 | 34.5432 | 50 | -0.26 | 70 |
IV.MMO1.EHZ. | 2021-09-25T21:07:10.48 | 0.3 | undecidable | manual | S | 19 | 13.5753 | 127 | -0.29 | 72 |
IV.MF5.EHZ. | 2021-09-25T21:07:10.75 | 0.3 | undecidable | manual | P | 34 | 27.2505 | 50 | 0.17 | 72 |
IV.LNSS.HHZ. | 2021-09-25T21:07:10.64 | 0.6 | undecidable | manual | P | 223 | 27.5502 | 50 | 0.02 | 50 |
IV.NRCA.HHZ. | 2021-09-25T21:07:10.88 | 0.3 | undecidable | manual | S | 293 | 13.875 | 127 | 0.02 | 76 |
IV.T1299.EHZ. | 2021-09-25T21:07:09.01 | 0.3 | undecidable | manual | P | 177 | 16.6722 | 122 | 0.22 | 73 |
IV.MMO1.EHZ. | 2021-09-25T21:07:08.19 | 0.3 | undecidable | manual | P | 19 | 13.5753 | 127 | -0.08 | 75 |
IV.MC2.EHZ. | 2021-09-25T21:07:08.74 | 0.3 | undecidable | manual | P | 335 | 15.5733 | 123 | 0.14 | 74 |
IV.NRCA.HHZ. | 2021-09-25T21:07:08.43 | 0.1 | negative | manual | P | 293 | 13.875 | 127 | 0.1 | 100 |
IV.SMA1.EHZ. | 2021-09-25T21:07:08.92 | 0.6 | undecidable | manual | P | 163 | 17.871 | 120 | -0.06 | 50 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.NRCA.HHE. | ML:1.0 | 0.00008774999999999999 | 0.1 | AML | other | m | 2021-09-25T21:07:10.97 |
IV.NRCA.HHN. | ML:0.8 | 0.0000635823 | 0.0896 | AML | other | m | 2021-09-25T21:07:11.35 |
IV.FDMO.HHN. | ML:0.6 | 0.000020150000000000002 | 0.22 | AML | other | m | 2021-09-25T21:07:15.96 |
IV.FDMO.HHE. | ML:0.5 | 0.00001445 | 1.76 | AML | other | m | 2021-09-25T21:07:15.10 |
IV.NRCA.HNE. | ML:1.0 | 0.000101462995 | 1.3696 | AML | other | m | 2021-09-25T21:07:13.79 |
IV.NRCA.HNN. | ML:1.2 | 0.00017832382 | 0.832 | AML | other | m | 2021-09-25T21:07:17.20 |
IV.SMA1.EHE. | ML:0.3 | 0.000012896615 | 0.3712 | AML | other | m | 2021-09-25T21:07:11.99 |
IV.SMA1.EHN. | ML:0.5 | 0.000023653575 | 0.256 | AML | other | m | 2021-09-25T21:07:11.87 |
IV.MF5.EHE. | ML:1.1 | 0.0000717037845 | 9.4208 | AML | other | m | 2021-09-25T21:07:12.25 |
IV.MF5.EHN. | ML:1.0 | 0.000061171755 | 6.7072 | AML | other | m | 2021-09-25T21:07:13.11 |
IV.CSP1.EHE. | ML:1.1 | 0.000053304875000000004 | 4.6848 | AML | other | m | 2021-09-25T21:07:12.33 |
IV.CSP1.EHN. | ML:1.1 | 0.000054058415 | 4.1856 | AML | other | m | 2021-09-25T21:07:19.05 |