- published: 08 Mar 2015
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In physical geography, a channel is the physical confine of a river, slough or ocean strait consisting of a bed and banks.
A channel is also the natural or human-made deeper course through a reef, sand bar, bay, or any shallow body of water. It is especially used as a Nautical term to mean the dredged and mar (See: Buoy) lane of safe travel which a cognizant governmental entity guarantees to have a minimum depth across its specified minimum width to all vessels transiting a body of water. The term not only includes the deep-dredged ship-navigable parts of an estuary or river leading to port facilities, but also to lesser channels accessing boat port-facilities such as marinas. When dredged channels traverse bay mud or sandy bottoms, repeated dredging is often necessary because of the unstable subsequent movement of benthic soils.
Channel, Channels, and similar terms may refer to:
Geography (from Greek γεωγραφία - geographia, lit. "earth describe-write") is the science that studies the lands, the features, the inhabitants, and the phenomena of the Earth. A literal translation would be "to describe or write about the Earth". The first person to use the word "geography" was Eratosthenes (276-194 BC). Four historical traditions in geographical research are the spatial analysis of the natural and the human phenomena (geography as the study of distribution), the area studies (places and regions), the study of the man-land relationship, and the research in the earth sciences. Nonetheless, the modern geography is an all-encompassing discipline that foremost seeks to understand the Earth and all of its human and natural complexities—not merely where objects are, but how they have changed and come to be. Geography has been called "the world discipline" and "the bridge between the human and the physical science". Geography is divided into two main branches: the human geography and the physical geography.