Atlas of the Deep-Water Seabed: Ireland by Boris Dorschel, Andrew J. Wheeler, Xavier Monteys, Koen

By Boris Dorschel, Andrew J. Wheeler, Xavier Monteys, Koen Verbruggen

Presented in an available, common layout, this atlas units out all of the significant positive aspects printed in the course of one of many greatest ever deep-sea mapping campaigns. a special perception into the morphology of the seabed alongside the continental margin of the North-East Atlantic, it finds for the 1st time many good points that experience hitherto been hidden underneath the waves. it's organised either thematically and by way of sector, with the ocean flooring and its organic hotspots – parts of excessive biodiversity equivalent to seamounts – proven at a answer impossible earlier than. The atlas provides every little thing from submarine canyons to coral carbonate mounds, utilizing electronic terrain types generated from multibeam info and images taken from unmanned deep-water automobiles (ROVs).

The full-colour imagery contains electronic three-d seabed maps in addition to the pictures, with concise textual content descriptions and subject packing containers used to spotlight and clarify the geological, organic and hydrographical positive factors, as well as their significance and context within the deep-sea realm. along the wealth of historical past details and subject containers on distinct highlights, large online assets hyperlink the reader to complete info units and GIS destinations, whereas feedback for extra examining element to ongoing study highlights. it is a attention-grabbing source that may be of use to a person taken with off-shore and underwater actions, even if clinical or commercial.

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Extra resources for Atlas of the Deep-Water Seabed: Ireland

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Dorschel et al. 1 The geology of the Irish seabed. The geological map of the Irish seabed highlights the banks as crystalline basement (old continental crust) whilst the trough and basins were successively filled with sediments. The orientation of faults is perpendicular to the direction of expansion of the crust during the opening phase of the Atlantic. 2 Idealised cross-section across the seabed. The main troughs (Hatton and Rockall Trough and Porcupine Seabight) are rifts bounded by faults, downthrown as the area was pulled apart during the early opening of the north Atlantic basin.

The heads of the Porcupine Bank canyons are also located in deep water usually below 950 m bsl with no evidence for a connection to the top of the bank. The origin and development of the Porcupine Bank ­canyons has not yet B. V. 1 Canyon and Channels. Canyons occur on both sides of the Rockall Trough and further south in the SW Approaches. Except for three small canyons at the east Rockall Bank, the Rockall Trough canyons are carved into the eastern continental margin. In the south, the canyons start more or less at the shelf break while the canyons along the Porcupine Bank and northernmost Irish continental margin barely cross the 1,000 m water depth contour.

B. V. 2010 17 18 B. Dorschel et al. 1 From sound to maps. Electromagnetic waves such as light or radio waves do not travel far in water and therefore cannot be used to map the deep-water seabed. Sound waves, however, travel well in water and are used in various applications for mapping the seabed. Bathymetric data used for this atlas were recorded with a multibeam echosounder. This image shows the data processing progression (from left to right): collection at sea of individual soundings which are then cleaned, corrected and coded to produce an interpolated grid of bathymetric data.

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Categories: Oceanography