?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F18792%2F&rft.title=Statistical+Characterization+of+Morphodynamic+Signals+Using+Wavelet+Analysis&rft.creator=Gutierrez%2C+Ronald+R.&rft.description=Morphodynamic+and+hydrodynamic+properties+are+concomitantly+part+of+the+entire+dynamic+of+river+systems+and+commonly+present+both+temporal+and+spatial+persistent+variability.+Therefore%2C+the+study+of+both+river+morphodynamic+signals+(e.g.+bed+forms+and+meandering+and+anabranching+river+morphometrics)+and+hydrodynamic+signals+(e.g.+velocity+fields%2C+sediment+concentrations)+requires+both+temporal+and+spatial+multi-scale+signal+representations.+The+present+research+is+focused+on+the+former+type+of+signals+and+it+is+a+first+attempt+to+discriminate+such+signals+and%2C+subsequently%2C+develop+the+theoretical+background+to+link+these+processes+at+different+spatial+and+temporal+scales+and+determine+the+scales+that+have+more+influence+on+river+evolution.%0D%0AThe+main+contribution+of+this+study+are%3A+%5B1%5D+to+design+a+methodology+to+discriminate+bed+form+features+(e.g.+bars%2C+dunes+and+ripples)+via+the+combined+application+of+robust+spline+filters+and+one-dimensional+continuous+wavelet+transforms%2C+allowing+the+quantitative+recognition+of+bed+form+hierarchies.+The+methodology+was+tested+by+using+synthetic+bed+form+signals+and+subsequently+applied+to+the+analysis+of+bed+form+features+from+the+Parana+River%2C+Argentina.+%5B2%5D+To+develop+a+methodology+for+the+statistical+analysis+of+the+spatial+distribution+of+meandering+rivers+morphometrics+by+coupling+the+capabilities+of+one-dimensional+wavelet+transforms%2C+principal+component+analysis+and+Frechet+distance.+A+universal+river+classification+method+is+also+proposed.+%5B3%5D+To+perform+a+novel+study+of+the+planimetric+configuration+of+confluences+in+tropical+free+meandering+rivers+located+in+the+upper+Amazon+catchment.+River+confluences+in+tropical+environments+represent+areas+where+biota+is+concentrated%3B+therefore%2C+a+better+understanding+and+characterization+of+these+features+has+a+particular+importance+for+the+Amazonian+ecosystem.+%5B4%5D+To+evaluate+the+potential+of+two-dimensional+wavelet+transforms+in+the+analysis+of+bed+form+features.%0D%0AThe+broader+impact+will+be+an+improved+understanding+of+river+morphodynamics+of+the+upper+Amazon+River+for+practical+applications+such+as+navigability.+Furthermore%2C+the+project+will+provide+an+updated+statistical+analysis+of+the+meandering+rivers+dynamics+for+practical+applications%2C+including+erosion+control%2C+river+ecology%2C+and+habitat+restoration.+The+developed+statistical+tool+will+be+included+as+an+application+of+the+RVR+Meander+platform+(www.rvrmeander.org)%2C+which+is+a+broadly+used+software+for+river+restoration.&rft.date=2013-09-25&rft.type=University+of+Pittsburgh+ETD&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F18792%2F1%2FPhD-ETD-RRGutierrez-SubmittedJuly2013.pdf&rft.identifier=++Gutierrez%2C+Ronald+R.++(2013)+Statistical+Characterization+of+Morphodynamic+Signals+Using+Wavelet+Analysis.++Doctoral+Dissertation%2C+University+of+Pittsburgh.++++(Unpublished)++