QUIZ 2

Select the WRONG statement

• Nearshore Wave Module is used to transform deepsea waves to the nearshore waves

  considering the various transformation processes such as refraction, shoaling and wave breaking.

• Hydrodynamic module is used to simulate the water level variations and current velocities

  induced by a variety of forcing functions such as tides, waves and wind.

• Advection / Dispersion Module simulates the spreading of suspended material, dispersion of

  thermal effluent and other pollutants for the study of its extent and intensity of the impacts.

• Mud/Sand Transport Module computes the shoreline budget and simulates the shoreline

  evolution to identify shoreline areas with potential erosion and simulate the potential shoreline

  evolution.

Select the WRONG statement regarding unrecognised model.

• Theoretical equations and mathematical techniques used in the model must be provided.

• Example of past application of the model in Malaysia must be provided.

• Comparison of the model results with other established model must be provided.

• Acceptance of the model will be decided by DID.

Select the WRONG statement.

• Coarse grid model is used for the open sea.

• Fine grid model is used for the project area.

• River inflow boundary must be sufficiently far from the river mouth to avoid inaccuracy.

• Open sea boundary must be sufficiently far from the project site to avoid error.

Select the WRONG statement.

• Consultant can use secondary data provided the reliability and quality of the data is verified.

• Deepwater wave characteristics can be obtained from established databases.

• Nearshore bathymetry survey is used to supplement Admiralty Chart data.

• Tidal data must be obtained from Royal Malaysian Navy.

Select the WRONG statement.

• Water level measurements shall be no less than 2 weeks to include the spring and neap tides.

• Current measurement must be at least 72 hours each during spring and neap tide.

• Current flow pattern shall be recorded onsite to be used as input to hydrodynamic module.

• The baseline conditions at selected locations need to be measured for proper assessment of the

  possible impacts.

Select the WRONG statement.

• Tide and current measurement must be 2 different locations.

• Proposed soil test location must allow the shoreline sediment characteristics to be determined.

• River flow and cross section is required for river mouth study.

• Pronounced differences in bathymetric data must be cheked prior to used.

Select the WRONG statement regarding model calibration and verification.

• Error in simulate water level cannot be more than 10%.

• Error allowance for simulated current velocity and direction is higher than water level.

• Calibration and verification must be for the same location.

• Simulation time interval shall be less than 60 minutes.

Select the WRONG statement.

• The simulations shall be carried out for the ‘before project’ and ‘after project’

  cases.

• Model shall be used to simulate each of the proposed alternatives.

• A combination of the dominant cases for each coastal forcing according to their percentage of

  occurrence shall be considered.

• The data used must be representative of NE and SW monsoon ONLY.

Select the WRONG statement.

• Pollutant modelling shall be carried out for the worst case, which is pure tides only with no

  waves and wind effects under all circumstances.

• Suspended sediment plume dispersion modelling aims to determine the spread and

  intensity of the suspended sediment plume by considering waves and wind in addition to the tides

  for the various seasons of the year.

• Sediment budget modelling along straight coastlines devoid of any features shall be carried

  out at regular intervals of about 5 km.

• The assessment of shoreline evolution shall be carried out for cases of 1 year, 2 years, 5 years

  and 10 years after the project implementation.

Select the WRONG statement.

• Flooding shall be assessed in terms of increased of water levels due to decrease

  in velocity at river mouth (immediate effect) and increased siltation (long term effect).

• Simulation for salinity concentrations shall be carried out for a complete spring-neap tidal

  cycle for the ‘before’ and ‘after’ project.

• If there is profound differences in flushing capacity before and after project, the project shall be

  aborted.

• River mouth navigability shall be investigated by assessment of the annual siltation rate.