13- Mr. HIEN B is a chief geologist, and he has been contacted by ESSAKAN mining company for
the following problem : In fact the company has realized that one part of its gold is carried
away by the surface waters. But the company does not know where this gold carried by
waters is deposited. You have been taught in class by Mr. HIEN B that, two friendly
phenomena are responsible for the destruction of rocks, and their transport to various
locations :
a) What are these phenomena ?
Mr. HIEN B, who has no doubt on your expertise in remote sensing, asked you for assistance.
He therefore provided you a Landsat image. The image is in black and white
b- How do we call this data, in remote sensing ?
c- What will you do next once you have this data, in order to identify very well the different
features on the image ?
Mr. HIEN B tells you that he wants to identify the different water bodies in the area, and
their flow directions, and relationships with one another.
d-Why is your teacher particularly interested in the surface water bodies ?
e- To which type of feature (rectangular, linear, polygonal) will you assimilate the rivers of
your area of study covered by the satellite ?