OBJECTIVE FORESTRY

FORESTRY

REMOTE SENSING

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why has there been an increasing need for remote sensing and direct sampling techniques?
A
Mineral ores are no longer close to the Earth’s surface due to the early mining phase
B
Plate tectonic activity has relocated mineral availability deeper within the surface
C
Climate change has been interacting with different spheres and dissolving minerals within ores
D
None of the above
Explanation: 

Detailed explanation-1: -Remote sensing techniques provide evidence such as observed lineament, global scale mountain distribution, seismicity and volcanic activities to support crustal scale tectonics and geodynamics studies. Additional spectral information also helps. For example, the grain size differentiates snow and ice.

Detailed explanation-2: -One of the main aims of remote sensing investigations is the delineation of hydrothermal alteration zones and the identification of the mineralogical signature [1, 3, 4]. Hydrothermal alteration zones (HAZs) and their grade must be characterized in order to identify possible mineral resource locations [1, 2, 5, 6].

Detailed explanation-3: -Generated images in remote sensing are extensively used to explore mineral deposits. The images facilitate mapping geological features and lineaments and identifying rocks by spectral signature. These images are usually gathered either through synthetic aperture sensors or optical sensors (Munawar et al., 2022).

There is 1 question to complete.