abyssal plain


Also found in: Thesaurus, Encyclopedia, Wikipedia.
Related to abyssal plain: Continental Rise

abyssal plain

A level tract of the deep ocean floor.
References in periodicals archive ?
According to Smith of the University of Hawai'i, the sluggish biology and low rates of sedimentation virtually ensure that abyssal plain ecosystems won't recover from mining for hundreds of years.
Now that the deep sea mining of polymetallic nodules on the abyssal plain (4000 to 6000 m depth) of the central Eastern Pacific is to begin in the next few years, serious consideration must be given to the possible effects on the abyssal environment.
Subsequently, they are most abundant on the continental slopes and organic poor sediment cover on abyssal plain restricts their formation, it says.
Plate and the western margin of the Indian Plate and continued further south-westward in the Gulf of Oman abyssal plain.
It rises approximately 2,000m from the surrounding abyssal plain, reaching a water depth of 690m at the top of the feature.
Plunging into the ocean off the west coast of Vancouver Island, the more than 800 kilometers of fiber optic cables that connect the research stations stretch across the continental shelf, plummet down the slope and across an abyssal plain, and skirt hydrothermal vents near a mid-ocean ridge where the Earth gives birth to new ocean crust.
This feral existence is compounded by the fact our office sits in a part of Belfast that would rival the ocean's abyssal plain for signs of life and home comforts.
The margin includes a steep narrow slope that extends from 200 to 4000 m water depth onto the Sohm Abyssal Plain (Fig.
And they also had high activity, meaning that more carbon is turned over by bacteria in the trenches than is turned over at 6,000m of depth in the abyssal plain.
The device successfully operated at depths of 5,600m in the Iberian Abyssal Plain in the North Atlantic.
The recent paper covers two time-series studies- one at "Station M," about 220 kilometers off the Central California coast, and a second on the Porcupine Abyssal Plain, several hundred kilometers southwest of Ireland.