الأربعاء، 7 يناير 2015

References


References geography books and some official state websites

www.pme.gov.sa/
www.google.com-wikipedia
- cia factbook-red sea .                  

Photos from the Red Sea

Photos from the Red Sea











Reading the Change of Seawater Color




Reading the Change of Seawater Color





Light reflection, depth, quality and composition of seabed, and blockage of light by clouds affect the change of seawater color. The darkest blue to black indicates deep water; the more it is lighter and purer, the less the depth is. Light green is less deep with a brown seabed. Brown indicates shallow and muddy water full of marine grass. Black indicates very less deep water with rocky dangerous ground, and it is classified as bare.

Pieces and small rocks in the Red Sea




Pieces and small rocks in the Red Sea




They are tops just like islands. However, they do not rise above sea level, i.e. they are submerged in different heights. They are dangerous because heights are variable; some of them can be passed through if they are 2 – 4 meters high. The more we approach the tops, the lesser and more dangerous the height will be during sailing. Sometimes, they are uncovered when the sea recedes. In less-high places, we see water shatters. Some of their compositions are sandy, rocky, and smooth; others are sharp and dangerous and can be detected when water color changes. Light green means that they are of sandy seabed, black means they are rocky, and some range between green and black because rocks are distributed over them. Therefore, it is necessary to turn around them from an adequate distance. However,those, which are close to sea surface as a flat top, will be detected by wave hitting if you see them in front of you. So, change the course and go through deeper water which tends to be dark blue.

Marine Islands in the red sea




Marine Islands in the red sea





They are land areas consisting of sand tops mounted on rocky compositions arising from seabed. Areas differ according to their configuration. They may be the surface of a mountainous chain or a single top; these are usually of a lesser area.As well, their prominence and height from sea level differ. They have many bushes.Many organisms live there because they consider it a suitable environment to reproduce in such as turtles and immigrant birds. It is surrounded by a sand coast extending downward to the sea; it may be rocky and deep at the end where waves strike heavily to surround depths around it. It is difficult for boats to approach it due to strong  pushing and reversing currents.

How to Recognize the Nature and Terrains of the Sea Coral Barrier Reef

How to Recognize the Nature and Terrains of the Sea
Coral Barrier Reef













A reef is a belt consisting of coral rocks against the coast. The nature of coral reefs differ from each other; the more the reef is away from the cost, i.e. horizontally, the more currents reversed after hitting the waves will reduce. Thus, it will form the best environment for sea organisms to reproduce where we will find different depths. It is also characterized by its beautiful configuration and its water color which varies from one place to another because of light reflection, depth, and ground nature. The color varies from pure blue, green, and brown. There are many bottom areas of white sand like low and flat pits, and in the middle, there are coral rocks.


Nature of Coasts in the red sea



Nature of Coasts in the red sea





The Red Sea coasts are characterized by their long extension of coral reefs consisting of coral rocks. There are also some bays that constitute internal water areas which are both wide and narrow linearly. There are some islands of different areas; therefore, we find depths in this distribution varying between less, moderate, and very deep. The danger of entering and exiting is due to these terrains of the Red Sea either on coasts or when leaving them. This is dangerous when sailing to fish.