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Hydrology & Fluvial Geomorphology

Hydrology & Fluvial Geomorphology



By: Cg. Dk. Malia (SMSO, tutong, Brunei)

By: Cg. Dk. Malia (SMSO, tutong, Brunei)



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    Hydrology & Fluvial Geomorphology Hydrology & Fluvial Geomorphology Presentation Transcript

    • Hydrology & fluvial geomorphology
      • Terms
      • Flow in drainage basin
      • Storm Hydrograph
      • Water balance
      • Human actions
      • Flood
      • Look at the diagram :
      • List down input & output
      • Which are the storage &
      • flow.
      • 3. How does water from
      • surface storage reaches
      • groundwater storage?
      • 4. Name the flow marked A
      • and B.
      • 5. Define terms shown in
      • diagrams.
    • Describe the differences between the discharges of rivers X and Y in response to the rainfall hydrographs over 24 hours of the two rivers. Catchments of rivers X & Y Using both diagram explain why the discharge of the two rivers are different Explain how each of these influence storm hydrograph: Drainage basin shape, geology, rainfall intensity, drainage density
    • Flow of water in a cross section of soil and bedrock
      • Name the flows shown
      • as A, B & C.
      • 2. Describe what is meant by
      • percolation.
      • 3.Describe and explain the
      • occurrence of the flows A,
      • B and C.
    • Water balance
      • Briefly define
      • the term water balance.
      • 2. Describe one reason
      • why water balance may
      • vary over time.
      • 3. Label A, B, C & D.
    • Rivers
      • River processes: erosion, transport & deposition
      • Describe flows: helicoidal, laminar & turbulence flow.
      • Landforms
      • Urbanisation & river flows.
    • River erosion
      • 1. Briefly describe the processes by which rivers can erode their channels. [8]
      • 2. Describe the general effects of erosion on the shape of the river channel. [3]
      • Name four methods by which rivers transport their load
      • and briefly describe these methods.
      2. Briefly describe laminar, turbulent flow and helicoidal flow and draw them.
    • Hjustrom curve.
      • 1. Name the type of sediment that requires the lowest velocity to be eroded . [1]
      • 2. Name the type of sediment that is likely to be transported at all velocities. [1]
      • 3. Describe and explain the relationship between
      • water velocity and the erosion of clay
      • and sand particles. [4]
      • 4. Explain the variation in water velocity that is
      • required to transport and to deposit
      • sediments of different particle diameter. [4]
    • River deposition
      • Describe what is river deposition and what
      • are the condition needed for it to occur.
    • landforms
      • 1. Draw a labelled diagram to show each of the following landforms & explain how they are formed:
      • Meandering
      • Flood plain and levees.
      • Delta
      • (d) ox-bow lake
      • (e) Water fall
      • (f) Braided channel.
    • Flood
      • Explain how river floods might be predicted. Giving examples, describe the methods which may be used to reduce the effects of flooding.
      • Describe the main features of river flood plains and explain why flood plains may present problems for human settlements.
    • Human activities on flow
      • Suggest how human activities might affect flows within a river channel.
      • How can changes in land use affect flows and stores in a drainage basin?
      • How can the abstraction (removal) and the storage of water by humans affect flows
      • and stores within a drainage basin.
      • Explain how urbanisation can affect river
      • channel flows.