Below The Sea Floor
نویسندگان
چکیده
منابع مشابه
Surprises from the sea floor
Unknown planet: Around 72% of the Earth’s surface is covered by oceans, and much of that surface is still unchartered territory for science. (Graphic: SuperStock.) More than seventy percent of the surface of our planet is covered by oceans. 88 percent of their area is deeper than 1,000 metres and thus difficult to access for research. There are only a handful of research submersibles that can d...
متن کاملExtending the sub-sea-floor biosphere.
Sub-sea-floor sediments may contain two-thirds of Earth's total prokaryotic biomass. However, this has its basis in data extrapolation from ~500-meter to 4-kilometer depths, whereas the deepest documented prokaryotes are from only 842 meters. Here, we provide evidence for low concentrations of living prokaryotic cells in the deepest (1626 meters below the sea floor), oldest (111 million years o...
متن کاملLagrangian floats as sea floor imaging platforms
There is a persistent need for high resolution photographic images of the sea floor and associated biota for marine habitat classification and fisheries stock assessment. This paper presents a novel low cost Lagrangian imaging platform that offers high quality images with reduced operational demands in comparison to existing methodologies such as diver surveys, drop cameras, ship towed systems ...
متن کاملThermohaline stratification below the Southern Ocean sea ice
The end of winter stratification within the cold cyclonic trough of the Weddell gyre near 60øS between 5øE and the Greenwich meridian is resolved with the Mikhail Somov data set. The temperature maximum of the Weddell Deep Water (WDW) is, for the most part, less than 0.5øC, but warmer cells of WDW are found. These warm WDW cells have temperature, salinity, and oxygen properties similar to the W...
متن کاملMeasuring Rainfall from above and below the Sea Surface
Satellites play a major role in the determination of the rainfall at sea. Researchers at Southampton Oceanography Centre (SOC) have been involved in two projects addressing this task. First they have been instrumental in developing techniques to retrieve rain rate information from the 10+ years of dual-frequency altimeter data. The TOPEX radar measures rainfall via the attenuation it causes, pr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1970
ISSN: 0028-0836,1476-4687
DOI: 10.1038/227973a0