Coastal geography is the study of the dynamic interface between the ocean and the land, incorporating both the physical geography (i.e. coastal geomorphology, geology and oceanography) and the human geography (sociology and history) of the coast. It involves an understanding of coastal weathering processes, particularly wave action, sediment movement and weather, and also the ways in which humans interact with the coast. Coastal geography is that branch of geography, incorporating physical and human geography,which deals with the study of the dynamic interface between ocean and land.
Physical oceanography is the study of physical conditions and physical processes within the ocean, especially the motions and physical properties of ocean waters.
Physical oceanography is one of several sub-domains into which oceanography is divided. Others include biological, chemical and geological oceanographies.
Physical geography (also known as geosystems or physiography) is one of the two major sub-fields of geography. Physical geography is that branch of natural science which deals with the study of processes and patterns in the natural environment like the atmosphere, hydrosphere, biosphere, and geosphere, as opposed to the cultural or built environment, the domain of human geography.
Within the body of physical geography, the Earth is often split either into several spheres or environments, the main spheres being the atmosphere, biosphere, cryosphere, geosphere, hydrosphere, lithosphere and pedosphere. Research in physical geography is often interdisciplinary and uses the systems approach.
The Isthmus of Perekop (Ukrainian: Перекопський перешийок; translit. Perekops'kyy pereshyyok; Russian: Перекопский перешеек; translit. Perekopskiy peresheek Crimean Tatar: Or boynu, Turkish: Orkapı) is the narrow, 5-7 km wide strip of land that connects the peninsula of Crimea to the mainland of Ukraine. The isthmus is located between the Black Sea to the west and the Sivash to the east. The isthmus takes its name from the Tatar fortress of Perekop.
The border between the Crimea republic and the Kherson Oblast runs though the northern part of the isthmus. The cities of Perekop, Armiansk, Suvorovo and Krasnoperekopsk are situated on the isthmus. The North Crimean Canal runs through the isthmus, supplying Crimea with fresh water from the Dnieper River.
The Kra Isthmus is the narrowest part of the Malay Peninsula, located in southern Thailand.