No Abstract available for this article.doi:10.1038/227018b0Our Geomagnetism CorrespondentNature Publishing Group UKNature
In addition to water, the term includes other substances such as ethane, methane, or ammonia that are in a liquid state under the conditions of the planetary surface. An analogue could be the hypothetical ocean of Titan. The liquid body could be at the planetary surface in thermodynamic ...
One plate is pulled, or subducted, under an advancing plate. This can create a variety of submarine activity. The farther down the plate becomes subducted, the greater the pressure. The area of the Earth's crust between the two plates becomes liquefied and escapes upward towards the surface,...
Beneath the oceans, the oceanic crust varies very little in thickness, generally extending only about 5 kilometers (3.1 miles), and is composed ofbasalt. The crust beneath the continents, however, is much more variable in thickness, averaging about 30 kilometers (18.6 miles); under large mount...
90% of the ocean is in the midnight zone.It is (47)entirely(entire) dark.The water pressure is extreme and the temperature is near freezing.The living things found here live close (48)to cracks in the Earth's crust (地壳) and rely on the bacteria that live near the crusts for food...
, in sea surface height caused by the features below. David Sandwell, a geophysicist at Scripps Institution of Oceanography, and his colleagues used a year’s worth of SWOT data to focus on seamounts, abyssal hills, and underwater continental margins, where continental crust meets oceanic crust....
The mean thickness of oceanic crust is 5 km whereas that of the continental is around 30 km. The continental crust is thicker in the areas of major mountain systems. It is as much as 70 km thick in the Himalayan region.
There are said to be more historic artefacts under the sea than in every museum in the world. 94% of the Earth’s living species exist in the oceans – that means the majority of life on this planet is aquatic. It’s possible to find rivers and lakes beneath the ocean. This is becau...
Firstly, there are several ways the PETM mass extinction could have happened. The possibilities are; release of methane from reservoirs like permafrost or under the ocean, wildfires in peatlands, desiccation of the ocean (which is the air warming up enough that the ocean starts evaporating), or...
and the existence of underwater features of considerablemagnitude.T oday, enough soundings are available to enable a relief map of the Atlantic to be drawnand we know something of the great variety of the sea bed's topography.Since the sea covers the greater part of the earth's surface, it...