Flashcards
Remote sensing and active tectonics
Flashcards do conjunto (23)
- 1Fault growth models1) Lateral propergation - faults length grows
2) Rotation - greater uplift in the middle compared to the sides - 2Normal faultσ1 = vertical, σ3 = horizontal
dip = 60⁰, rotation until 30⁰
entends horizontally, thins vertically
footwall = ranges, hanging wall = basin - 3Reverse faultingVertical dimensions increase, horizontal decrease
- 4Mechanisms of thickening1) Crustal Shortening (folding, faulting etc)
2) Magmatism
3) Pure shear - 5NDVINormalised Difference vegetation index
NDVI =(IB4 - IB3)/(IB3+IB4)
if NDVI = 1 then vegetation
if NDVI<<1 then rock
range -1 to 1 - 6Temporal ResolutionLength of revisit time to image the same region
- 7Radiometric ResolutionRange of intensities in radiation that can be recorded
- 8Spectral ResolutionThe frequency width of each band
- 9Spacial ResolutionPixel sizes
- 10What equation must a sun synchronous orbit satisfy?NoP = Nr (2pi/Omega e - omega)
Where No is the number of orbits
P is the period
Nr is the number of rotations
omega e is the rate of rotation for Earth - 11What are the two types of day?Siderial day - star reappears in same place (23h 56' 4'')
Mean Solar day - sun appears directly overhead again (24h) - 12Langrangian PointPlaces around the sun (in earths orbit) in which the gravity of both cancel.
- 13Velocity of a sataliteV = √(GM/R)
- 14Geostationary orbit36500km altitude
Stays above one point on Earths surface
24.11hr period - 15Low earth orbit200 km altitude
88 mins period - 16Near Polar orbit700 km altitude
99 mins period - 17Vibration of waterFrequency = Infrared
Ei (energy of each vibration) = (n+1/2)h fi - 18Stephan Boltzmann LawM = σT^4
where σ = 5.7x10^8 W/m^2/K^4
M = total energy emmited by a blackbody - 19Weins Lawλ(max) = 2.898x10^-3 / T
- 20RadianceRadiance, L is the power of EM radiation incident on a unit area per solid angle in a given direction
- 21BlackbodyMatter which can absorb and re-emit all radiation
- 22Airlightlight scattered in atmosphere DOESN'T hit ground before the sensor
- 23—
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- FlashCards sobre Remote sensing and active tectonics, criado por emma.watts em 12-05-2016.
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