remote sensing water Flashcards

1
Q

what are the 10 types of waves in order

A

gamma rays
x-rays
UV
Visible Light
infared
radio waves
radar
tv
FM
AM

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2
Q

name two things better obtained via remote sensing

A

water vapour
cloud cover

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3
Q

two things used for in situ measurements

A

salinity
velocity

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4
Q

why does water appear blue

A

violet and blue light penetrates the water

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5
Q

both in-situ and RS

A

precipitation
water depth

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6
Q

what does Lp stand for

A

atmospheric noise

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7
Q

what does Ls stand for

A

reflected light

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8
Q

,

A

,

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9
Q

what does Lb stand for

A

bottom radiance

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10
Q

why is turbid water more challenging then pure water

A

because turbid water has a higher suspended solids which causes longer wave lengths.

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11
Q

urban wetlands vs forested wetlands in remote sensng

A

forest wetlands produce a brownish yellow colour

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12
Q

when would you want to use lidar

A

shallow /hazardous waters

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13
Q

when should sonar be used

A

deep waters

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14
Q

what is el nino

A

trade winds relax in the pacific ocean
warm water eastward

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15
Q

what is la nina

A

cold water returns to the pacific

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