I02-05

Question

Saildrone research vehicles are relatively slow, moving at about three knots. Both vehicle speed and noise increase with wind speed, resulting in lower data quality. Saildrones have difficulty making progress in low wind conditions, requiring several days to complete a transect that requires a few hours on a survey vessel. The quality of data collected by Saildrones is especially poor in turbulent ocean conditions (storms, high wind events) because the vehicles are relatively small and lightweight, which makes them prone to substantial pitch and roll that in turn produces frequent acoustic ping dropouts (no data) relative to the survey vessel data.
 
In the table, select variables pertaining to Saildrones research missions that based on the information provided would be inversely proportional – one increasing and one decreasing. Make only two selections, one in each column.

bb · Answer

Official Solution:   
 
The information in the paragraph indicates that wind speed increases both vehicle speed and noise, but lowers data quality.

Correct answer:

Increases  "Wind speed"

Decreases  "Data quality"

I02-05

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Increases	Decreases
		Data quality
		Dropouts
		Noise
		Pitch and roll
		Turbulence
		Wind speed