和许多盐城人一样,我对位于领海基线以内的东沙岛,仅知其名而未见其貌。去年夏天应朋友之邀,有幸去了一趟东沙,了却了我多年的宿愿。东沙岛,其实并非是岛,而是一块海涂。涂者,涨潮时淹没、退潮时显露之海中沙洲也。东沙岛位于北纬33°03’,东经121°09’,与盐城的大丰、东台两市海岸相对,距陆地海岸最近距离约20公里。东沙与毛竹沙、蒋家沙、条子泥等沙脊组成了形态特殊的沙脊群,有一系列水下沙脊与潮流深槽相间分布,以东台市琼港为辐射点,然后呈张开的手掌形状,向海中偏北方向辐射。这是我国乃至世界上为数不多的规模最大的岸外海底沙脊群之一,又叫辐射状沙洲。其中最大的就是东沙,占整个辐射状沙洲的三分之一,它南北长50公里,东西宽(平均)20公里,零米线以上总面积104万亩,相当于一个中等县的总耕地面积,其中3.3米 Like many Yancheng people, I knew nothing but the name of Dongsha Island within the baseline of the territorial sea. Last summer, at the invitation of a friend, I was fortunate to go to Dongsha, but it was my long-cherished wish. Dongsha Island, in fact, is not an island, but a sea. Tu who flooded at high tide, the ebb sand revealed when the ebb. Dongsha Island is located at 33 ° 03 ’north latitude and 121 ° 09 east longitude, opposite the coasts of Dafeng and Dongtai in Yancheng and the closest distance to the coast of land about 20 km. There are a series of sand ridges formed by the sand ridges such as Dongsha and Maozhusha, Jiangjiasha and Zongzi mud, and a series of underwater sand ridges are distributed along with the tidal current deep trough. Taking the Qionggang of Dongtai City as a radiation point, an open palm Shape, to the north of the sea radiation. This is one of the few offshore sand banks in China and even in the world, also known as a radial sandbank. One of the largest is Dongsha, accounting for one-third of the entire radial sandbank. It is 50 km long from north to south and 20 km wide (on average). The total area above the zero-meter line is 1.04 million mu, which is equivalent to the total cultivated area of ​​a middle- Of which 3.3 meters