Satellite Maps Arctic Ocean Floor

Terra Daily
Thursday, May 31, 2012

A European satellite launched in 2010 to measure sea-ice thickness in the Arctic is also yielding high-resolution mapping of the ocean floor

While the main objective of the polar-orbiting CryoSat is to measure the thickness of polar sea ice and ice sheets that blanket Greenland and Antarctica, its radar altimeter can also measure tiny changes in sea level, 'Terra Daily' is informed by a European Space Agency report.

Variation in sea level mimics the rises and dips of the ocean floor beneath due to the pull of gravity, as areas of greater mass such as underwater mountains have a stronger pull, attracting more water and producing a minor increase in ocean-surface height, researchers said.

The CryoSat data combined with ongoing ocean mapping will result in global seafloor topography -- bathymetry -- two to four times more accurate than measurements currently available, they said.

"We know more about the surfaces of Venus and Mars than we do about the bathymetry of deep oceans," David Sandwell from the Scripps Institution of Oceanography in California said. "This new mapping from CryoSat will revolutionize our understanding of ocean floor tectonics and reveal, perhaps, 10,000 previously uncharted undersea volcanoes."
 


 



 

Maritime Reporter June 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Science

Water Conservation Measures at Panama Canal

The water levels at Gatun and Madden Lakes are currently well below the expected levels for this time of year. Based on a comprehensive analysis of historic data,

Aberdeen Pupils Peek into Subsea Oil & Gas Technology

Pupils at an Aberdeen primary school were given a rare insight into the depths of the oil and gas industry’s subsea sector after getting to sit in the driving

New Binding Law of The Sea Agreement Advanced

WOC Sustainable Ocean Summit (Singapore, 9-11 November 2015) Will Enable Industry to Organize its Input to this Major New Ocean Treaty Development The U.N.

Arctic Operations

First Subsea Wet Gas Compressor Installed

After several years of technology development, construction and testing the first subsea wet gas compressor in the world is now installed at the Gullfaks C platform in the North Sea.

U.S. Draft Recovery Plan for Threatened Polar Bears

U.S. wildlife managers released on Thursday a draft plan for stemming the decline of polar bears threatened by melting Arctic sea ice linked to global warming,

UK Navy’s Ice Patrol Ship Gets a New Coating

U.K. Royal Navy Ice Patrol Ship HMS Protector is deployed on operations for 330 days a year, mostly in the Antarctic region, making it essential that her underwater

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Naval Architecture Navigation Offshore Oil Pipelines Port Authority Ship Repair Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0746 sec (13 req/sec)