Geomorphometry: Concepts - Software - Applications

59 Pages·2007·134.236 MB·English

by  Hengl, Reuter (eds.)

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708 ColourPlateSection
FIGURE9(CHAPTER1) Geomorphometrythenandnow:(a)outputfromlate-1980sDOS
programmewrittentodisplayland-surfaceproperties:(left)mapoflocaldrainagedirection,
(right)cumulativeupstreamdrainageelementsdrapedoveraDEMrenderedin3-Dbyparallel
profiles.CourtesyofP.A.Burrough;(b)watershedboundariesfortheBaranjaHillstudyarea
overlaidinGoogleEarth,anonlinegeographicalbrowseraccessibletoeveryone.(Seepage23of
thisvolume.)
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FIGURE10(CHAPTER1) The“BaranjaHill”datasets.CourtesyoftheCroatianStateGeodetic
Department(http://www.dgu.hr).(Seepage27ofthisvolume.)
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FIGURE5(CHAPTER3) ComparisonofDEMsfrommainsourcesforBaranjaHill:(a)90m
resolutionSRTMDEM,(b)30mresolutionSRTMDEM,(c)DEMfrom1:50,000topo-map,and
(d)DEMfrom1:5000topo-map.(Seepage72ofthisvolume.)
FIGURE6(CHAPTER3) Exampleofa15(cid:2)×15(cid:2)blockof1arcsecSRTMDEMorderedforBaranja
Hill.CourtesyofGermanSpaceAgency(DLR).(Seepage77ofthisvolume.)
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FIGURE7(CHAPTER3) Availabilityofthe1arcsecSRTMDEMs(C-BandRadar)overthe
Europeancontinent.Missingareasarewerenotacquiredduetoanenergyshortageattheend
ofthemission(Rabusetal.,2003).ToloadtheGoogleEarthmap,visitgeomorphometry.org.
(Seepage78ofthisvolume.)
FIGURE8(CHAPTER3) Availabilityofthe30mASTERDEMsovertheEuropeancontinent
(beforeJanuary2006).(Seepage78ofthisvolume.)
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FIGURE3(CHAPTER4) AnexampleoflocalartefactsinpartoftheGTOPODEM(1km
resolution).Suchartefactsareonlyvisibleaftercarefulinspection.(Seepage91ofthisvolume.)
FIGURE13(CHAPTER4) Threeapproachestoremovingspurioussinks:(a)sinkfilling,
(b)carving,and(c)theoptimalcombinationoffillingandcarving.Thedetectedsinksare
indicatedblack.(Seepage107ofthisvolume.)
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FIGURE7(CHAPTER7) TotalcatchmentareacalculatedfortheBaranjaHillareausingthree
differentmethods.(Seepage183ofthisvolume.)
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FIGURE8(CHAPTER7) TotalcatchmentareacalculatedfortheBaranjaHillareausingMFDand
threedifferentdispersionexponents.(Seepage184ofthisvolume.)
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FIGURE9(CHAPTER7) Parts(A)–(C)showthespecificcontributingarea(SCA)calculatedfor
theDEMofaconesingD8,D-InfinityandMFM.ThestronggridbiasinherentinD8isreadily
visiblefromthestarpattern(A).Part(D)ofthisfigureshowsthetotalcontributingarea(TCA)
calculatedusingMFM.Thiscounter-intuitiveresultiscorrectbecauseofthedifferentflow
widthsofpixels(seeFigure6).Whendividedbytheflowwidth,theSCA(C)showstheright
circularpattern.(Seepage185ofthisvolume.)© 2005RivixLLC,usedwithpermission.
FIGURE11(CHAPTER7) Edge-contaminatedareas(white)havebeenremovedfromthe
calculatedtotalcontributingarea.Both,theflowaccumulationaswellasthe
edge-contaminationwerecomputedusingMFD.Other,lessdispersivemethodsresultin
asmallerareaofedgecontamination.(Seepage186ofthisvolume.)
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FIGURE12(CHAPTER7) Wetnessindex FIGURE13(CHAPTER7) Streampowerindex
calculatedfortheBaranjaHill.Valuesrange calculatedfortheBaranjaHill.Valuesrange
from3(dark)to20(yellow);thedataislinearly from1(dark)to12,000(yellow);thedatais
stretched.(Seepage187ofthisvolume.) stretchedusinglogarithmicdisplay.(See
page187ofthisvolume.)
FIGURE14(CHAPTER7) Completedrainage FIGURE15(CHAPTER7) Drainagelines
linesforonecatchment.Inthebackground, prunedbyHorton–Strahlerorder.(See
elevationisrepresentedbycolour.(See page189ofthisvolume.)© 2004RivixLLC,
page188ofthisvolume.)© 2004RivixLLC, usedwithpermission.
usedwithpermission.