Sentences with phrase «continental margins»

Areas of extremely high marine productivity are confined to small sections of modern continental margins.

20 April 2018 Oscar Fransner has studied the role of different glacial / non-glacial sedimentary processes in shaping the glaciated continental margin of the northern Barents Sea.

Shipp, S. and Anderson, J.B., 1997, Lineations on the Ross Sea Continental Shelf, Antarctica: in Davies, T.A., Bell, T., Cooper, A.K., et al., editors, Glaciated Continental Margins: An Atlas of Acoustic Images, Chapman andHall, London, 54 - 55.

The area of the park was astride a passive continental margin during the Precambrian and early Paleozoic.

Pockmarks are seafloor craters usually formed during methane release on continental margins.

Although this is one of the best - mapped continental margins in the world, significant gaps still remain along the upper slope and shelf where potentially dangerous submarine landslides might occur.

Ocean loading at continental margins induces a «levering» of continents and a subsidence of offshore regions that has also long been recognized within the GIA literature (Walcott, 1972).

Using nearly 200 published studies and their own fieldwork and data, researchers created a global database to reconstruct the volcanic history of continental margins over the past 720 million years.

Müller, C. Reconstruction of the paleontological conditions at the Laptev Sea continental margin during the last two glacial / interglacial cycles based on sedimentological and mineralogical investigations.

Then if a warming trend continues, overtime the oceans get warm enough and release continental margin located hydrates from shallow regions.

A 2009 study of the West Spitsbergen continental margin north of Norway in the Arctic Ocean, led by University of Birmingham geophysicist Graham Westbrook, put into perspective the challenges the scientific community faces.

These proxy climate data extend Pollen analysis of a deep - sea core off the Ivory Coast continental margin (at about 4 ° N, 4 ° W) shows thirteen pollen zones, correlated with isotopic δ 18

In short: methane release from the ocean floor may have caused a weakness in the sediments that contributed to development of these huge dents in the Norwegian continental margin.

Mapping mission Investigators set out to map key areas of the Atlantic continental margin in high resolution, work that could uncover more about these hazards.

For eons, the mineral iron, which once saturated oceans, likely bonded with phosphorus, and sank it down to dark ocean depths, far away from those shallows — also called continental margins — where cyanobacteria would have needed it to thrive and make oxygen.

But something did change about 800 million years ago, and cyanobacteria and other minute organisms in continental margin ecosystems got more phosphorus, the backbone of DNA and RNA, and a main actor in cell metabolism.

He attributes the Alaska Range's alternating topographic signatures to a myriad of factors: contrasting lithospheric strength between large terranes (i.e., distinctly different rock units); the location of the curved Denali fault; the transfer of strain inland from southern Alaska's active plate margin; and the shape of the controlling former continental margin against weaker suture - zone rocks.

Rock movement along the Denali fault drives the uplift of the mountains, which form at bends in the fault, where previously fractured suture - zone rocks are pinned against the stronger former North American continental margin.

The coast instead slowly and relentlessly sinks as the rock beneath it cools and sand and mud washed off the land fill the space created by the sinking continental margin.

But there are other important locations of large reserves: river deltas and continental margins offshore.

Continental margins cover over 11 percent of the world's oceans.

On 22 May 1960, an earthquake shook the southern Chilean continental margin on a length of about 1,000 kilometers.

Although roughly 15 percent of the world's oceans overlie continental margins, these bands suffer from the logistical drawbacks of land and deep sea: inconveniently deep water and uncomfortably complex terrain.

The methane hydrates with the highest climate susceptibility are in upper continental margin slopes, like those that ring the Arctic Ocean, representing about 3.5 percent of the global methane hydrate inventory, says Carolyn Ruppel, a scientist who leads the Gas Hydrates Project at the USGS.

, Glacier - Influenced Sedimentation on High Latitude Continental Margins: Geological Society of London, Spec.

Continental volcanic arc systems such as the Andes Mountains are created at active continental margins where two tectonic plates meet and the oceanic plate descends under the continental plate, forming a subduction zone.

Off California, the combined effects of sluggish circulation in semi-isolated basins, continental margin depths within the oxygen minimum zone, and high surface water productivity all contribute to accumulation of laminated, organic - rich sediments in the Santa Barbara basin.

Methane release from warming - induced hydrate dissociation in the West Svalbard continental margin: Timing, rates, and geological controls

Its populations form more than 60 % of the megafaunal biomass at the deep continental margins of the western and central Mediterranean basins.

A simulation of the Siberian continental margin after glacial sea level drop and exposure to the cold atmosphere, snapshot as sea level rises during the deglaciation.

A passive (nonsubducting) continental margin simulation based on the Atlantic coast of the United States.

In 2014 based on their research on the northern United States Atlantic marine continental margins from Cape Hatteras to Georges Bank, a group of scientists from the US Geological Survey, the Department of Geosciences, Mississippi State University, Department of Geological Sciences, Brown University and Earth Resources Technology, claimed there was widespread leakage of methane.