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DTM Related Geo-HazardsEarthquake: Size, Location, distributionof Blind Faults.Land Slide: Slope, Aspect, Run-offDistanceFlood: Catchment, river ne<strong>tw</strong>orksTsunami: Elevation of coast lineDebris Flow: Slope, Run-off DistanceVolcano: Terrain Data
Basic Information from DTMAltitude Elevation Potential energyUpslope height Averaged Height of UpslopeUpslope slope runoff velocityDispersal slope rate of soil drainageCatchment slope time of concentrationUpslope area runoff volume, steady-state state runoff rateDispersal rate soil drainage rateCatchment area runoff volumeSpecific catchment runoff volume, steady-state state runoffrate, geomorphologyFlow path length erosion rate, sediment yield, time ofconcentrationUpslope length flow acceleration, erosion rate,Dispersal length: impedance of soil drainage.Catchment length: : overland flow attenuationProfile curvation: : flow acceleration, erosion/deposition ratePlan curvation: : converging/diverging flow.
Page 1: Geohazard Assessment withHigh Resol
Page 5 and 6: Discrete points Grids
Page 7 and 8: Comparison the Error of HeightUnit:
Page 10 and 11: 2574000Photogrammetry VS2572000LiDA
Page 12 and 13: 3D View of Regional Bias
Page 14 and 15: Aerial 5m DTMLiDAR 1m DTMTrenchRoad
Page 16 and 17: Aerial40maerial5mLiDAR5mLiDAR1m
Page 18 and 19: Slope
Page 20 and 21: Summary of published result for Lan
Page 22: Aerial Photos集集 084_921 地
Page 25 and 26: Determine the Weighting forLandslid
Page 27 and 28: Geology-Dist. To Structure與構
Page 29 and 30: Topography-Aspect坡向對山
Page 31 and 32: Environment-PGAPGA 對山崩面
Page 33 and 34: Unstable Index MethodRatio Index=(N
Page 35 and 36: Reclassify Results
Page 37 and 38: Validation Region
Page 39 and 40: Calculated Factors
Page 41 and 42: Discussion1.Dist to gully2.Slope3.r
Page 43 and 44: Slope vs height vs landslideratio w
Page 45 and 46: InterpretationsLidar have better ch
Page 47: Thanks……yutt@mail.ncku.edu.twTE

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