Why can the bay be sheltered from the wind

The shelter of the bay is mainly determined by its shape. Generally, there are ten U-shaped bays, which are windproof on three sides. Generally, the wind in the bay is relatively small and quiet ~!

That part of the coastal area that sinks into the land. Usually, the connecting line between two corresponding headlands near the mouth of the bay is the outermost dividing line of the bay. The reasons for the formation of the bay include: (1) due to the different hardness of the coastal rocks extending to the sea, the weak rock strata are constantly eroded and depressed to the land, gradually forming the bay; The hard part protrudes into the sea to form a headland. (2) When the sediment moving longitudinally along the coast forms a sand mouth, one side of the coastal zone is blocked and becomes a sunken sea area. (3) As the sea level rises, seawater enters the land, the coastline becomes tortuous, and the sunken part becomes a bay. Due to the shelter of the coastline on both sides of the bay, wave shadow zones are formed in the bay, which reduces the energy of waves and tides. Sediments are deposited on the top of the bay to form a beach. When the energy of sediment transport is insufficient, bay dams can be formed at the mouth of the bay and in the bay, which are called bay mouth dam and bay middle dam respectively.

The sea or ocean extends to the land to form an obvious bend. Usually three sides are land, one side is ocean, and there are U-shaped and circular arcs, which can freely exchange water with the main part. Due to crustal fracture and sea level rise, seawater flooded mountain depressions, valleys or tectonic fault zones. Paragraph 2 of Article 10 of the United Nations Convention on the Law of the Sea (1982) stipulates: "A bay is an obvious water bend, and the ratio of its concavity to the width of its bend makes it have water surrounded by land, not just a bend along the coast. However, the water bend should not be regarded as a bay except that its area is equal to or greater than the area of a semicircle whose diameter is a straight line that has been bent. " Paragraph 4 of article 10 stipulates: "If the distance between the low tide marks at both ends of the natural entrance of the bay is less than 24 nautical miles, a sealing line can be drawn between the two low tide marks, and the water surrounded by this line should be regarded as internal water." Paragraph 5 of Article 10 stipulates: "If the distance between the low tide marks at both ends of the natural entrance of the bay exceeds 24 nautical miles, a straight baseline of 24 nautical miles shall be drawn in the bay, so as to delimit the largest water area that the line of this length may delimit." Due to the divergence of wave energy in the bay, the disturbance of wind and waves is small, and the water body is calm, which is easy to deposit sediment. Generally, the tidal range is large, and the Bay of Fundy in North America is the largest tidal range in the world (up to 2 1 m). The Gulf is an important base for human beings to engage in marine economic activities and develop tourism. There are many large and small bays in the world, which are mainly distributed along the coasts of North America, Europe and Asia, among which there are more than 240 larger bays. Some bays, such as the Gulf of Mexico in the North Atlantic, the Bay of Bengal in the Indian Ocean and the Persian Gulf, are essentially oceans.