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Lesson Navigation IconTerrain Analysis (Intermediate)

Unit Navigation IconApplications in hydrology

LO Navigation IconGrids vs. TIN’s

LO Navigation IconDrainage networks

LO Navigation IconIssues and alternative approaches

LO Navigation IconInformation derived from a drainage network

LO Navigation IconMultiple Choice Quiz

LO Navigation IconQuestions

LO Navigation IconSummary

Unit Navigation IconVisibility analysis and related topics

Unit Navigation IconBibliography

Unit Navigation IconMetadata

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Questions

  1. What is an ldd net? Explain using your own words and post your answer on the discussion board.
  2. What steps (i.e. intermediary information products) are needed to compute a sediment transport index from a DTM?
  3. Why do TIN’s have a better potential for hydrologic modelling than grids? Why are grids more favoured nevertheless?
  4. You want to compute downstream proximity to a flow channel but your GIS does not support that procedure. You have the idea to invert your DTM and use an upstream function. Which one would you choose?
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