Aircraft noise exposure expressed by Ldnranged from under 55 to over 70 in the surveyed area.
However, photodiode, photomultiplier tube, and linear CCDs have a limited surveyed area.
Although PMT has high sensitivity, it is with a limited surveyed area.
The surveyed area covered approximately 270 km2, along 80 km of the Southeast coast of Portugal.
Left map of the surveyed area (white painted area) and location of H/V measurements (yellow circles).
Continents like North America, Western Europe and Australia show large geographical space of surveyed area (Fig. 4, shaded areas).
Taxon abundance was estimated as the mean number of specimens per taxon divided by the surveyed area.
This assumption probably works well for the Tertiary units in the surveyed area, which are the focus of interpretation.
Anchovy biomass was estimated using NASC values, the fish target strength by size and the dimension of the surveyed area.
To their surprise, Croll's team found that not a single vocalist was female, although both males and females were present in the surveyed area.
Although the surveyed area was not under risk during the operation, they demonstrated the capability of the UAV for volcanic plume measurements under conditions of risk.
