COPY: MHSE02: Hydrology Fundamentals and Principles

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Questions and Answers

What are the two fundamental physical laws that govern the movement of water on the land surface and in soils/aquifers?

  • Conservation of mass and conservation of force
  • Conservation of energy and conservation of momentum
  • Conservation of energy and conservation of temperature
  • Conservation of mass and conservation of energy (correct)

Which of the following best describes solar energy and gravity in the context of the global hydrological cycle?

  • They only influence local processes, not the global cycle.
  • They are the driving forces behind the global hydrological cycle. (correct)
  • They are secondary forces that have minimal impact on the cycle.
  • They interact solely through precipitation events.

What is one of the primary research focuses within the field of hydrology?

  • Investigation of geological formations
  • Studying the impact of urbanization on wildlife
  • Analysis of hydrological data (correct)
  • Comparative studies of different soil types

How are the local and regional hydrological processes related to the global hydrological cycle?

<p>Local and regional processes influence larger scales, affecting the global cycle. (B)</p> Signup and view all the answers

Which aspect is NOT a consideration in improving measurement networks for hydrological processes?

<p>Easier access to geological surveys (D)</p> Signup and view all the answers

What is the primary focus of the energy budget approach for modelling snowmelt?

<p>Balancing the available energy with energy needed for melting (C)</p> Signup and view all the answers

Which phase of the energy budget approach involves estimating the energy required to raise the snowpack temperature to the melting point?

<p>Warming phase (A)</p> Signup and view all the answers

What factor is considered in the temperature index approach for calculating snowmelt?

<p>Air temperature (A)</p> Signup and view all the answers

In the context of snowmelt modelling, what does the term 'k' represent?

<p>The melt factor dependent on heat transfer (C)</p> Signup and view all the answers

What is a limitation of the temperature index approach compared to the energy budget method?

<p>It requires fewer data and measurements (B)</p> Signup and view all the answers

What is a primary purpose of hydrological models?

<p>To analyze and simulate relevant hydrological processes (C)</p> Signup and view all the answers

Which of the following is NOT a primary hydrological process?

<p>Saturation (D)</p> Signup and view all the answers

Which storage type contributes to the overall water balance in hydrological systems?

<p>Soil storage (A)</p> Signup and view all the answers

What does runoff concentration refer to in the context of hydrology?

<p>Discharge formation in the stream channel system (A)</p> Signup and view all the answers

What kind of scales do hydrological processes function at?

<p>Multiple spatial and temporal scales (A)</p> Signup and view all the answers

What is included in the surface water boundary of a catchment area?

<p>Artificial boundaries only (B)</p> Signup and view all the answers

Which process follows runoff formation in a catchment?

<p>Runoff concentration (D)</p> Signup and view all the answers

Which model scale would be relevant for predicting long-term sea-level rise?

<p>Global scale energy budget (A)</p> Signup and view all the answers

What type of error is primarily caused by changes in instruments or location during measurements?

<p>Systematic errors (D)</p> Signup and view all the answers

Which of the following is considered a systematic error in measurement?

<p>Wind affecting measurement (C)</p> Signup and view all the answers

What method is preferred for conducting homogeneity tests?

<p>Relative tests using multiple time series (A)</p> Signup and view all the answers

What is required for a significant change in the slope of a double mass curve?

<p>The trend must last at least 5 years (A)</p> Signup and view all the answers

Which correction method is used if a change in measurement conditions is clearly associated with the data?

<p>Multiply data by a factor K (A)</p> Signup and view all the answers

Which of the following is NOT a source of systematic changes in a time series?

<p>Variability in precipitation measurements (C)</p> Signup and view all the answers

What is the primary difficulty with consistency tests for precipitation data?

<p>Variations due to random errors (B)</p> Signup and view all the answers

Which element is crucial to establishing a homogeneous time series?

<p>Meteorological consistency (A)</p> Signup and view all the answers

What is the primary purpose of the Acoustic Doppler Current Profiler (ADCP) in hydrology?

<p>To determine flow velocity using reflected acoustic signals (A)</p> Signup and view all the answers

Which of the following is calculated as the time integral of the hydrograph?

<p>Mass curve (SQ) (A)</p> Signup and view all the answers

In hydrograph analysis, what does the continuous slope of the mass curve represent?

<p>Mean discharge (MQ) (C)</p> Signup and view all the answers

What does the flow duration curve illustrate?

<p>The percentage of time discharge was equalled or exceeded (C)</p> Signup and view all the answers

What is the significance of the inflection points in the mass curve?

<p>They represent local maximum or minimum discharge in the hydrograph (B)</p> Signup and view all the answers

How is the flood volume calculated in hydrology?

<p>By integrating the flood hydrograph from critical flow to peak discharge (B)</p> Signup and view all the answers

What does the mass curve of differences to average signify in hydrograph analysis?

<p>The time-dependent difference between inflow and outflow (B)</p> Signup and view all the answers

What is the relevance of statistical criteria in flow duration curves?

<p>To assess flood re-occurrence probability and waterway navigability (D)</p> Signup and view all the answers

What components make up streamflow?

<p>Base flow, interflow, and saturated overland flow (A)</p> Signup and view all the answers

Which factors do NOT affect runoff formation?

<p>Temperature of the atmosphere (C)</p> Signup and view all the answers

What does the SCS Method primarily analyze?

<p>Empirical relationship between retention and runoff (B)</p> Signup and view all the answers

What does the Continuity Equation represent in hydrology?

<p>The balance between precipitation, infiltration, and runoff (A)</p> Signup and view all the answers

In the formula $Q = (P - I_a) \times (P + 0.8S)$, what does $I_a$ represent?

<p>Initial abstraction (D)</p> Signup and view all the answers

How is potential maximum retention, S, determined?

<p>Through land use and soil retention curves (C)</p> Signup and view all the answers

What is the range of values for Curve Number (CN)?

<p>0 to 100 (B)</p> Signup and view all the answers

Which of the following statements about antecedent moisture condition (AMC) is incorrect?

<p>AMC is based solely on temperature (B)</p> Signup and view all the answers

What does $P - I_a$ in the runoff equation denote?

<p>Net precipitation (A)</p> Signup and view all the answers

What is one potential drawback of the SCS Method when applied to areas in middle Europe?

<p>Underestimation of Curve Numbers by 10 to 30% (C)</p> Signup and view all the answers

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