When the summer heat is unbearable, the best place for people to cool off and relax is the beach. Beidaihe, Nandaihe, Changli Gold Coast, Qingdao Huiquan Bathing Beach, Beihai Silver Beach Bathing Beach, Hainan Sanya Dadonghai and Yalang Bay are all overcrowded. Thousands of people are swimming and playing in the sea, people are lying leisurely under umbrellas on the beach, people are creating sand sculptures on the beach with focused expressions, and a fierce battle of beach volleyball is in full swing. These beaches are made of golden and silver sand, and the golden and silver sand pave the endless sandy coast. The soft sandy beaches and gorgeous colors make people fall in love with it. Sandy coasts are mainly distributed in bays along mountains and hills. Rivers originating from the hinterland of mountains and hills carry a large amount of coarse and fine sand into the sea. In addition to depositing at river mouths to form barrier sand, drifting sand spreads with ocean currents and is deposited in bays to form sandy coasts.
Schematic diagram of sandy coast profile
golden beach
Hawaii to the sandy coast
On the west coast of Taiwan Island, from Cape Baisha to Fangshan, there are rivers such as Dajia River, Dadu River, Zengwen River, and Xiatsui that originate from the mountains in central Taiwan, carrying large amounts of sand into the sea, forming a sandy coast. The sand exported by these rivers moves southward with the water under the influence of strong northerly winds in the Taiwan Strait. The sediment flow is blocked by the raised coast, forming many huge sand banks. A lagoon forms on the inside of the sand bank. The beaches along the coast are also very open.
The sandy coast of Weitou, Fujian
From the mouth of Liugu River in western Liaoning to the mouth of Luanhe River in northern Hebei, sandy coasts are very developed. This area is backed by the Yanshan Mountains, and the rivers originating from the Yanshan Mountains provide abundant sand sources for the development of sandy coasts. The Liugu River brings abundant coarse-grained river sand. After the river sand enters the sea, it drifts southwestward with the sea current under the influence of strong northeasterly winds, and accumulates along the coast to form sand banks. The orderly arrangement of sand embankments is very spectacular.
People play on the flat, soft beach
The fine white sand beach of Dadonghai, Sanya
In the shallow sea from the mouth of Luanhe River to Caofeidian, a series of sand bars parallel to the coast are intermittently distributed. These sand bars that exist offshore are called offshore dams or offshore dams. Except for extremely high tides, the sand bar is always exposed to the sea. The length of sand dams is mostly 2-4 kilometers, the height is often 1.2-2.2 meters, and the width is mostly 50-100 meters.
On the sand bar outside the coast, there are also small aeolian sand dunes developed. There are three wind-made sand dunes on the crescent-shaped Binwai sand bar called Yuetuo. In the depressions between the sand dunes, because there are sand dunes that block the northeast wind and accumulate a lot of groundwater, the microclimate is warm and humid. Therefore, in spring, the grass is green and the red flowers bloom on the branches. It really feels like a paradise.
Walking on the beach
The wind-formed sand dunes along the coast of Changli are generally 25-35 meters high, with the highest reaching 40 meters, becoming "high mountains" protruding from the plain. The sand dune belt is about 2 kilometers wide and 40 kilometers long, covering an area of about 76 square kilometers. The slope of the windward slope on the seaward side of the dune is 6-8 degrees, and the slope of the leeward slope on the landward side reaches 30-32 degrees.
Pitch on the beach
The sand grains in Changli Coastal Sand Dunes are relatively coarse, mostly medium fine sand and medium sand. How were such tall coastal sand dunes formed? Scientists have uncovered this mystery after repeated investigations and research. The sand from the coastal dunes comes from the area's sandy beaches. When the beach sand is exposed at low tide, it is dried by the sun. The strong northeast wind blows the sand up. Due to the obstruction of trees, the dust falls after being transported for a short distance, and the sand gathers into mounds. Rivers continue to carry mud and sand into the ocean, and the sand on the beaches is constantly replenished and blown away by the wind. Coastal sand dunes are constantly supplied with sand and gradually become taller, majestic and spectacular.
The sandy coast in Changli is beautiful. The coastal sand dunes made of golden and silver sand are dazzling and spectacular under the summer sun. People call Changli's sandy coast the Gold Coast. This is not only because it has a gold-like appearance, but more importantly, through coastal development and tourism development, you will get huge returns. It can be said that every inch of land is valuable.
Qingdao is a well-known seaside tourist city at home and abroad. It built Asia's first-class bathing beach on the sandy coast. Qingdao's first bathing beach is built on the sandy beach of Huiquan Bay. The sand there is fine, pure and extremely soft. It is very comfortable and pleasant to walk on the beach with bare feet. In summer, thousands of people gather on Huiquan Bay Beach every day to swim, play, bask in the sun, and enjoy the joy of summer beaches. The newly built Shilaoren Tourist Resort in recent years has built bathing beaches and various recreational facilities on more than 400,000 square meters of beach. The sand here is finer and cleaner. The resort implements closed management, including a leisure swimming area, children's playground area, beach sports area and sand sculpture area. Walking on the beach, facing the refreshing sea breeze, and looking at the returning fishing boats, you will sigh from the bottom of your heart: the beach, the sea, the cool breeze, the sunshine, and the returning sails will always belong to me. The sandy coast is the most popular marine resource, the most valuable for development and utilization, and the most closely related to people's lives.
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