Earthquake (quarry blast) with magnitude of ML 1.2 on date 25-08-2015 and time 15:50:38 (UTC) in region 4 km NW Treia (MC)

A magnitude ML 1.2 (quarry blast) earthquake occured in region: 4 km NW Treia (MC), on

  • 25-08-2015 15:50:38 (UTC)
  • 25-08-2015 17:50:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.35, 13.3 at 6 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Event type: quarry blast.

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Treia MC 5 9403 9403
Appignano MC 5 4213 13616
Cingoli MC 7 10352 23968
Pollenza MC 10 6618 30586
Filottrano AN 11 9499 40085
Montecassiano MC 12 7125 47210
Staffolo AN 13 2253 49463
Montefano MC 14 3541 53004
Apiro MC 14 2280 55284
Macerata MC 14 42473 97757
San Paolo di Jesi AN 15 933 98690
Tolentino MC 16 20069 118759
San Severino Marche MC 16 12726 131485
Santa Maria Nuova AN 16 4179 135664
Poggio San Vicino MC 18 246 135910
Cupramontana AN 18 4756 140666
Urbisaglia MC 18 2628 143294
Monte Roberto AN 19 3061 146355
Castelbellino AN 20 4947 151302
Jesi AN 20 40399 191701
Petriolo MC 20 1998 193699

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SW of Ancona (100861 inhabitants)
59 Km SE of Fano (60888 inhabitants)
65 Km NE of Foligno (57155 inhabitants)
70 Km SE of Pesaro (94582 inhabitants)
78 Km E of Perugia (166134 inhabitants)
84 Km NW of Teramo (54892 inhabitants)
98 Km SE of Rimini (147750 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.2 2015-08-25
15:50:38
43.35 13.29 6 2015-08-25
15:59:11
Sala Sismica INGV-Roma 21067721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-08-25 15:50:38 ± 0.2
Latitude 43.35 ± 0.00
Longitude 13.29 ± 0.01
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type quarry blast
Origin ID 21067721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 990
Semi-minor axis of confidence ellipse (meter) 190
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 990
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 254
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.07644
Epicentral distance of station farthest from the epicenter (degree) 0.58186
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 21067721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-08-25 15:59:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2015-08-25T15:50:59.84 0.3 undecidable manual S 289 0.5819 50 0.29 66
IV.FDMO.HHZ. 2015-08-25T15:50:52.27 0.3 undecidable manual S 206 0.348 99 -0.11 72
IV.PIEI.HHZ. 2015-08-25T15:50:50.58 0.1 undecidable manual P 289 0.5819 50 -0.2 90
IV.ARVD.HHZ. 2015-08-25T15:50:50.40 0.1 undecidable manual S 300 0.2959 101 -0.01 99
IV.CSP1.EHZ. 2015-08-25T15:50:49.47 0.1 undecidable manual S 194 0.2662 102 0.18 96
IV.SNTG.HHZ. 2015-08-25T15:50:49.32 0.3 undecidable manual S 250 0.2743 102 -0.28 71
IV.FDMO.HHZ. 2015-08-25T15:50:46.23 0.6 negative manual P 206 0.348 99 -0.41 45
IV.EL6.EHZ. 2015-08-25T15:50:45.00 0.3 undecidable manual S 262 0.1421 112 0.31 72
IV.ARVD.HHZ. 2015-08-25T15:50:45.40 0.3 negative manual P 300 0.2959 101 -0.11 73
IV.SNTG.HHZ. 2015-08-25T15:50:44.75 0.6 negative manual P 250 0.2743 102 -0.29 47
IV.CSP1.EHZ. 2015-08-25T15:50:44.96 0.3 negative manual P 194 0.2662 102 0.11 73
IV.EL6.EHZ. 2015-08-25T15:50:42.31 0.1 positive manual P 262 0.1421 112 0.11 100
IV.CING.HHZ. 2015-08-25T15:50:42.32 0.3 undecidable manual S 289 0.0764 127 -0.16 75
IV.CING.HHZ. 2015-08-25T15:50:41.12 0.1 positive manual P 289 0.0764 127 0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHE. ML:1 3.845E-5 1.44 AML other m 2015-08-25T15:50:51.24
IV.ARVD.HHN. ML:1 4.86E-5 1.34 AML other m 2015-08-25T15:50:52.17
IV.CING.HHN. ML:1.9 0.001425 0.2 AML other m 2015-08-25T15:50:42.48
IV.CING.HHE. ML:1.9 0.00156 1.02 AML other m 2015-08-25T15:50:43.45
IV.FDMO.HHE. ML:1.2 6.145E-5 0.2 AML other m 2015-08-25T15:50:53.29
IV.FDMO.HHN. ML:1.1 4.63E-5 1.58 AML other m 2015-08-25T15:50:53.31
IV.SNTG.HHN. ML:1.2 8.5E-5 0.16 AML other m 2015-08-25T15:50:49.85
IV.SNTG.HHE. ML:1 4.41E-5 1.18 AML other m 2015-08-25T15:50:50.60
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download