This type of breakwater. has up to now been mainly used in Canada, Iceland, Norway and Denmark (Faero Islands). The main advan-. tage of the berm breakwater is that smaller stones can be. used on this dynamic stable berm breakwater than on a sta-. tic stable conventional rubble mound breakwater.
Click on image for larger version. The photosphere is the visible surface of the Sun that we are most familiar with. Since the Sun is a ball of gas, this is not a solid surface but is actually a layer about 100 km thick (very, very, thin compared to the 700,000 km radius of the Sun).ince the Sun is a ball of gas, this is not a solid surface but is actually a layer about 100 km thick (very, very, thin compared to the 700,000 km radius of the Sun).
The mesosphere (/ËmÉsoÊsfÉªÉr/ ; from Greek mesos middle and sphaira ball) is the layer of the Earth's atmosphere that is directly above the stratopause and directly below the mesopause. In the mesosphere temperature decreases as the altitude increases.octilucent clouds are located in the mesosphere. The upper mesosphere is also the region of the ionosphere known as the D layer. The D layer is only present during the day, when some ionization occurs with nitric oxide being ionized by Lyman series-alpha hydrogen radiation.