Anomalous Conditions in the Slope Water Area in 1959

1964 ◽  
Vol 21 (2) ◽  
pp. 327-333 ◽  
Author(s):  
L. V. Worthington
Keyword(s):  
Coastal Water ◽  
North Atlantic ◽  
Cold Water ◽  
Large Data ◽  
Water Area ◽  
Research Vessel ◽  
Weather Pattern ◽  
High Incidence ◽  
Coastal Fog ◽  
Deep Current

An oceanographic section made with the research vessel Crawford in June 1959 showed that the proportion of Labrador-Coastal Water to Slope Water at the meridian 57°30′W was unusually large. Data from this section combined with bathythermograms taken elsewhere in the Slope Water area and direct deep current measurements suggest that there was an abnormal influx of cold water from the Labrador Basin in 1959. This suggestion is strengthened by the high incidence of coastal fog in the summer of 1959. It is suggested that the cause of this influx was an abnormal North Atlantic weather pattern in January 1959.

scholarly journals Notes on the Copepoda of the North Atlantic Sea and the Faröe Channel

1904 ◽  
Vol 7 (1) ◽  
pp. 110-146 ◽  
Author(s):  
R. Norris Wolfenden
Keyword(s):  
North Atlantic ◽  
Cold Water ◽  
Water Area ◽  
The North ◽  
The North Atlantic

In a previous notice in this Journal, voL vi, p. 344, January, 1902, a brief description of the plan of work undertaken by the writer was given. This comprised cruises across the cold-water area of the laroe Channel during 1900, 1901, and 1902, during the course of which tow-nettings were made at each station with Garstang's net, or Fowler's net, down to 500 to 600 fathoms, simultaneously with hydrographical observations (temperature, collection of water, etc.), which have already been partly reported upon by Mr. H. N. Dickson (GeograpMcal Journal, April, 1903).

scholarly journals Copepod carcasses in the subtropical convergence zone of the Sargasso Sea: implications for microbial community composition, system respiration and carbon flux

2019 ◽  
Vol 41 (4) ◽  
pp. 549-560 ◽  
Author(s):  
Kam W Tang ◽  
Liv Backhaus ◽  
Lasse Riemann ◽  
Marja Koski ◽  
Hans-Peter Grossart ◽  
...  
Keyword(s):  
North Atlantic ◽  
Carbon Flux ◽  
Cold Water ◽  
Microbial Community Composition ◽  
Convergence Zone ◽  
Sargasso Sea ◽  
The North ◽  
Water Column Stratification ◽  
Vast Area ◽  
Subtropical Convergence Zone

Abstract The oligotrophic subtropical gyre covers a vast area of the Atlantic Ocean. Decades of time-series monitoring have generated detailed temporal information about zooplankton species and abundances at fixed locations within the gyre, but their live/dead status is often omitted, especially in the dynamic subtropical convergence zone (STCZ) where the water column stratification pattern can change considerably across the front as warm and cold water masses converge. We conducted a detailed survey in the North Atlantic STCZ and showed that over 85% of the copepods were typically concentrated in the upper 200 m. Copepod carcasses were present in all samples and their proportional numerical abundances increased with depth, reaching up to 91% at 300–400 m. Overall, 14–19% of the copepods within the upper 200 m were carcasses. Shipboard experiments showed that during carcass decomposition, microbial respiration increased, and the bacterial community associated with the carcasses diverged from that in the ambient water. Combining field and experimental data, we estimated that decomposing copepod carcasses constitute a negligible oxygen sink in the STCZ, but sinking carcasses may represent an overlooked portion of the passive carbon sinking flux and should be incorporated in future studies of carbon flux in this area.

scholarly journals The Reduction Method of Bathymetric Datasets that Preserves True Geodata

2019 ◽  
Vol 11 (13) ◽  
pp. 1610 ◽  
Author(s):  
Marta Wlodarczyk-Sielicka ◽  
Andrzej Stateczny ◽  
Jacek Lubczonek
Keyword(s):  
Data Reduction ◽  
Reduction Method ◽  
Large Data ◽  
Water Area ◽  
Bathymetric Data ◽  
Remote Sensors ◽  
Depth Data ◽  
Coastal Modelling ◽  
Reduction Methods ◽  
Quality And Reliability

Water areas occupy over 70 percent of the Earth’s surface and are constantly subject to research and analysis. Often, hydrographic remote sensors are used for such research, which allow for the collection of information on the shape of the water area bottom and the objects located on it. Information about the quality and reliability of the depth data is important, especially during coastal modelling. In-shore areas are liable to continuous transformations and they must be monitored and analyzed. Presently, bathymetric geodata are usually collected via modern hydrographic systems and comprise very large data point sequences that must then be connected using long and laborious processing sequences including reduction. As existing bathymetric data reduction methods utilize interpolated values, there is a clear requirement to search for new solutions. Considering the accuracy of bathymetric maps, a new method is presented here that allows real geodata to be maintained, specifically position and depth. This study presents a description of a developed method for reducing geodata while maintaining true survey values.

Good neighbours shaped by vigorous currents: Cold-water coral mounds and contourites in the North Atlantic

2016 ◽  
Vol 378 ◽  
pp. 171-185 ◽  
Author(s):  
Dierk Hebbeln ◽  
David Van Rooij ◽  
Claudia Wienberg
Keyword(s):  
North Atlantic ◽  
Cold Water ◽  
The North ◽  
The North Atlantic ◽  
Water Coral
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