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Hemipelagic sediment, or hemipelagite, is a type of marine sediment that consists of clay and silt-sized grains that are terrigenous and some biogenic material derived from the landmass nearest the deposits or from organisms living in the water. [1][2] Hemipelagic sediments are deposited on continental shelves and continental rises, and differ ...
The mesopelagic zone (Greek μέσον, middle), also known as the middle pelagic or twilight zone, is the part of the pelagic zone that lies between the photic epipelagic and the aphotic bathypelagic zones. [1] It is defined by light, and begins at the depth where only 1% of incident light reaches and ends where there is no light; the depths ...
The hadal zone, also known as the hadopelagic zone, is the deepest region of the ocean, lying within oceanic trenches. The hadal zone ranges from around 6 to 11 km (3.7 to 6.8 mi; 20,000 to 36,000 ft) below sea level, and exists in long, narrow, topographic V-shaped depressions. [1][2] The cumulative area occupied by the 46 individual hadal ...
The Holdridge life zones system is a global bioclimatic scheme for the classification of land areas. It was first published by Leslie Holdridge in 1947, and updated in 1967. It is a relatively simple system based on few empirical data, giving objective criteria. [1] A basic assumption of the system is that both soil and the climax vegetation ...
The Köppen climate classification divides climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are A (tropical), B (arid), C (temperate), D (continental), and E (polar). Each group and subgroup is represented by a letter.
September 28, 2024 at 10:45 AM. Hurricane Helene is one of the most powerful storms ever to hit the United States with wind gust speeds of 140 mph (225 km/h) and heavy rain. The storm made ...
Marine sediment, or ocean sediment, or seafloor sediment, are deposits of insoluble particles that have accumulated on the seafloor.These particles either have their origins in soil and rocks and have been transported from the land to the sea, mainly by rivers but also by dust carried by wind and by the flow of glaciers into the sea, or they are biogenic deposits from marine organisms or from ...
Stephanie Williams, 40, developed a slight cough and thought it was allergies or undiagnosed COVID. Williams, who never smoked, asked her doctor for an X-ray — which is when a mass in her lung ...