Magnitude 5.5 Earthquake off the coast of Oregon 2015-06-01

2015-06-01 10:46:27 (UTC) : Off the coast of Oregon

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Magnitude : 5.5

Event Time: Time and Date Starting of Earthquake Rupture 

• 2015-06-01 10:46:27 (UTC)

Earthquake data:

Location : Position of Epicenter 

44.553°N 129.544°W

Depth : Depth of starting Rupture 

10.0 km

Region : Off the coast of Oregon

Directions and Distances :Directions and Distances from Geographical Reference in Close Proximity Which can be effected by Location Uncertainty

a) 435km (270mi) W of Waldport, Oregon

b) 447km (278mi) WNW of Coos Bay, Oregon

c) 494km (307mi) W of Dallas, Oregon

d) 498km (309mi) W of Corvallis, Oregon

e) 517km (321mi) W of Salem, Oregon

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	5.5 mwp	± 0.0
Location	44.553°N 129.544°W	± 8.8 km
Depth	10.0 km	± 1.9
Number of Phase Applied1	136
Minimum Distance2	460.08 km (4.13°)
Travel Time Residual3	1.43 sec
Azimuthal Gap4	171°

¹Number of phase Applied: 

In determining location of hypocenter, applied number of observations on P waves and S waves. The greater the more accurate prediction of EQ.

²Minimum Distance:

 Horizontal distance of nearest Station measured in Km from epicenter. The smaller the more accuracy in prediction of depth of EQ.

³Travel Time Residual:

 A way of measurement of fit of arrival time observed to arrival time predicted for particular location. The smaller the better fit of data.

⁴Azimuthal Gap: 

Expressed in degree; the smaller the smaller the error in horizontal positioning of EQ. Large uncertainty is considered when exceeds 180° (both depth and location)