Early-est:     Unimak Island Region, Alaska    2017.03.11-09:28:03.50    q:B      mb:4.5    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1489224482746.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1489224482746.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1489224482746.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1489224482746.mech.fmamp_amp_mwp.thumb.jpg

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details:
Magnitude: mb: 4.5 [13]    Mwp: - [0]    Mwpd: - [0]
Region: Unimak Island Region, Alaska
Origin Time: 2017.03.11-09:28:03.50 UTC
Hypocenter: lat: 53.49°  lon: -163.62°  [+/-18km]    depth: 20km  [+/-14km]
Location Quality: qualityCode:  B     stdErr: 1.5s   assocPhases: 48   usedPhases: 23
minDist: 1.4°   maxDist: 158.6°   AzGap: 171°   2ndAzGap: 205°   atten: -0.64 [+/-0.22]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 18km   azMaxHorUnc: 177°
68%ConfEllipsoid:   semiMajorAxisLength: 22km   majorAxisAzimuth: 357°   majorAxisPlunge: 3°   semiIntermediateAxisLength: 15km   intermediateAxisAzimuth: 263°   intermediateAxisPlunge: 55°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [11]    Td: -s [0]    Td*T50Ex: - [0]    To: 19.0s [7]
Closest plate boundaries:
   North America / Pacific [subduction zone]: distance: ~40km
Subduction geometry:    Zone: Alaska-Aleutians    Slab depth at epicenter: 22km
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (40km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       20km
       20km
       20km
Slab depth at epicenter:
       22km
       -
       -
./hypo.1489224482746.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 312°   dip: 41°   rake: 120°
Nodal Plane 2: strike: 94°   dip: 55°   rake: 66°
Quality: azimuthalGap: -1°   stationPolarityCount: 18   misfitWeightCount: 4.5   misfit: 0.10   stationDistributionRatio: 0.24   meanDistP: 48.1   meanDistT: 42.3   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1489224482746.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (No solution available)
Nodal Plane 1: strike: 999°   dip: 99°   rake: 999°
Nodal Plane 2: strike: 324°   dip: 13°   rake: 135°
Quality: azimuthalGap: 204°   stationPolarityCount: 18   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1489224482746.mech.hash.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (No solution available)
Nodal Plane 1: strike: 14°   dip: 0°   rake: 0°
Nodal Plane 2: strike: 284°   dip: 90°   rake: 90°
Quality: azimuthalGap: -1°   stationPolarityCount: 0   misfitWeightCount: -1.0   misfit: -1.00   stationDistributionRatio: -1.00   meanDistP: -1.0   meanDistT: -1.0   qualityCode: X
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_amp_aref
./hypo.1489224482746.mech.fmamp_amp_aref.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (No solution available)
Nodal Plane 1: strike: 14°   dip: 0°   rake: 0°
Nodal Plane 2: strike: 284°   dip: 90°   rake: 90°
Quality: azimuthalGap: -1°   stationPolarityCount: 0   misfitWeightCount: -1.0   misfit: -1.00   stationDistributionRatio: -1.00   meanDistP: -1.0   meanDistT: -1.0   qualityCode: X
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_amp_mwp
./hypo.1489224482746.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:localhost/ee/event/1489224482746
Event info last updated: 2017.03.11-10:29:06 UTC
Event first association/location: 2017.03.11-09:40:42 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: localhost