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  • Ocean currents  (9)
  • Cell & Developmental Biology
  • Fisheries
  • Woods Hole Oceanographic Institution  (9)
  • 2010-2014  (9)
  • 2005-2009
  • 1950-1954
  • 2014  (9)
  • 1
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    Midwater fish data report : cold core rings time series cruises, Knorr 62, 65, and 71 and Endeavor 11 (2014)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: This data report is for midwater fishes taken on the time-series cruises in and around cold-core Gulf Stream rings in 1976 and 1977 - KNORR cruises 62, 65, and 71 and ENDEAVOR cruise 11. The MOCNESS-10 system was used for sampling on the three KNORR cruises. Most often, five nets were fished at each station; one (Net 0) generally sampled down to near 1000 m where the second net (Net 1) was opened and retrieval of the gear begun; successive closure-openings were done at 250-m intervals on the way up. On ENDEAVOR cruise 11, for want of a suitable winch, a single net was fished down to and up from 1000 m.
    Description: This work was done under Contract N00014-79-C-0071 NR083-004 and its predecessors with the Office of Naval Research.
    Keywords: Knorr (Ship : 1970-) Cruise KN62 ; Knorr (Ship : 1970-) Cruise KN65 ; Knorr (Ship : 1970-) Cruise KN71 ; Endeavor (Ship: 1976-) Cruise EN11 ; Fishes ; Ocean currents
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 2
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    Oceanographic study of warm core Gulf Stream rings and the Northwest Atlantic Slope Water region : a prospectus for multidisciplinary research, report and proceedings / Interdisciplinary Workshop on Gulf Stream Anticyclonic Eddies (Warm Core Rings) held at the Woods Hole Oceanographic Institution, May 16-20, 1977 (2014)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: It is well recognized in the oceanography of the Western North Atlantic that a distinct hydrographic regime exists between the continental shelf and the Gulf Stream, once the latter has effectively separated from the coast at Cape Hatteras. Denoted as the Slope Water, this hydrographic regime has been considered as one of confusing complexity, presumably arising from irregular mixing processes between it and the neighboring shelf and Gulf Stream regimes. Although previously noted in the literature, it has recently become very strongly evident as a result of the satellite image coverage of this region that a dominant role in this variability can be ascribed to well organized and persistent circulation features. These have been given the name warm core Gulf Stream rings, in order to emphasize their complementary dynamic origin relative to the more generally known cold core rings in the Sargasso Sea. A scientific workshop was held in Woods Hole under the auspices of the NSF/ IDOE to review in detail the status of our knowledge about the biology, chemistry and physics of the shelf-Slope Water regime and the associated rings, and the general biological, chemical and physical processes likely to be taking place in rings. Also considered were the prospect for advancing this knowledge through a multidisciplinary study of the warm core rings and the region impacted by them. Out of extensive background review in papers presented in plenary sessions, and program discussions in working groups, there arose a consensus that such a multidisciplinary effort would be both feasible and timely.
    Description: Funded by the National Science Foundation, Office for International Decade of Oceanographic Exploration, Grant OCE77-00924
    Keywords: Eddies ; Ocean currents ; Warm Core Rings
    Repository Name: Woods Hole Open Access Server
    Type: Working Paper
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  • 3
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    Limits of Nematoscelis megalops in the northwestern Atlantic in relation to Gulf Stream cold core rings. I, Horizontal and vertical distributions (2014)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally published in the Journal of marine research, v. 36, 1, 1978, pp. 119-142
    Description: The hydrographic limit of the distribution of Nematoscelis megalops in the Northwestern Atlantic Ocean is usually marked by the abrupt changes in water properties across the Gulf Stream. There are, however, isolated but repeated occurrences of this species in the Sargasso Sea. In our study, individuals in the Sargasso Sea were expatriates from the Slope Water which had been transported to the collection site by Gulf Stream cold core rings with but two exceptions. The exceptional cases can be indirectly linked to the presence of rings. Expatriated populations do not persist. Extinction in a ring appears to take place in one or two generations, and for N. megalops it is related to changes in hydrographic properties, and in particular, the vertical temperature structure. Both in the Slope Water and in the ring 50% or more of the population is found in a restricted temperature regime centered about 10°C. As a ring ages, the preferred temperature regime and N. megalops along with it move deeper into the water column. The physiological and biochemical data given by Boyd, Wiebe and Cox (1978) combined with data given here indicate that withdrawal from the surface results in progressive deterioration of the nutritional condition of the population, a cessation of growth, a drastic reduction in the number of males relative to females, reproductive incapacitation, and ultimate extinction. It is conceivable that a process similar to that occurring in rings is responsible for the maintenance of the Gulf Stream as a hydrographic limit in the distribution of N. megalops.
    Description: Prepared for the Office of Naval Research under Contracts N00014-66-C-0241; NR 083-004 and N00014-74-C-0262; NR 083-004 and for the National Science Foundation under Grant DES 74-02783 A01
    Keywords: Ocean currents ; Zooplankton ; Atlantis II (Ship : 1963-) Cruise AII71 ; Atlantis II (Ship : 1963-) Cruise AII85 ; Chain (Ship : 1958-) Cruise CH111 ; Chain (Ship : 1958-) Cruise CH125 ; Knorr (Ship : 1970-) Cruise KN35 ; Knorr (Ship : 1970-) Cruise KN38 ; Knorr (Ship : 1970-) Cruise KN53 ; Oceanus (Ship : 1975-) Cruise OC7 ; Cold Core RIngs
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 4
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    Warm core rings workshop report : 18-22 Jan. 1982, Wellington, New Zealand (2014)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: A workshop on the physics, chemistry and biology of warm core rings was held at the New Zealand Oceanographic Institute in Wellington during 18-22 January 1982, under the auspices of the U.S./Australia and U.S./New Zealand Cooperative Science Programs. The purpose of the workshop was to elicit joint discussions and exchange of ideas between groups of scientists actively working on warm core rings or eddies. The workshop consisted of 34 scientific papers summarizing accomplishments resulting from work in warm core rings; working group discussions on particular disciplinary and multi-disciplinary problems associated with ring structure and dynamics; and a final session summarizing the current state of knowledge about rings, and indicating directions for future research.
    Description: U.S.-Australia Cooperative Science Program; U.S.-New Zealand Cooperative Science Program; DSIR (New Zealand); CSIRO (Australia)
    Keywords: Ocean currents ; Ocean circulation ; Warm Core Rings
    Repository Name: Woods Hole Open Access Server
    Type: Working Paper
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  • 5
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    Surface velocity in the equatorial oceans (20N-20S) calculated from historical ship drifts (2014)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Ship drift velocity observations were used to calculate and plot monthly mean and yearly mean velocities in 2° latitude by 5° longitude boxes for the Atlantic, Pacific, and Indian Oceans. The vector maps shown here provide a visualization of the mean and seasonally varying currents.
    Description: Funding was provided by the National Science Foundation through grant Number OCE 87-16509.
    Keywords: Ocean currents
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 6
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    Gulf Stream recirculation experiment - Part II (2014)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: This report presents trajectories and time series of velocity, pressure, and temperature for twelve neutrally-buoyant floats launched during the Gulf Stream Recirculation EXperiment (GUSREX) and two from earlier experiments, that continued to operate after May 1982. These float data were obtained from Autonomous Listening Stations (ALSs) deployed from May 1982 to August 1985.
    Description: Funding was provided by the national Science Foundation under Grant Numbers OCE 81-09145 and OCE 81-17467
    Keywords: Ocean circulation ; Ocean currents ; Gulf Stream Recirculation Experiment
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 7
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    Limits of Nematoscelis megalops in the northwestern Atlantic in relation to Gulf Stream cold core rings. II, Physiological and biochemical effects of expatriation (2014)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally published in the Journal of Marine Research, v. 36, 1, 1978, pp. 143-159
    Description: Nematoscelis megalops, a cold water euphausiid commonly found in Northwestern Atlantic Slope Water, is frequently transported in the cores of Gulf Stream cyclonic rings into the Sargasso Sea. The inner core made of cold Slope Water gradually assumes physical and biological characteristics of the surrounding Sargasso Sea. These changes gradually lead to a localized extinction of this species in the core of the ring. Samples of N. megalops taken from the same ring at 6 and 9 months after its formation show a weakened physiological and biochemical condition. Deterioration of ring individuals is evidenced by an increase in body water content and a reduction in total body lipid, carbon, respiration rates, and nitrogen relative to Slope Water individuals. By 6 months it appears that ring N. megalops must supplement food intake by metabolizing some of their body protein and by 9 months they appear to use lipids as well. A shipboard starvation experiment involving 40 Slope Water individuals showed that physiological and biochemical states similar to those found in individuals from the 9 months old ring could be duplicated in 4 days of complete starvation.
    Description: Prepared for the Office of Naval Research under Contracts N00014-66-C-0241; NR 083-004 and N00014-?4-C-0262; NR 083-004 and for the National Science Foundation under Grant DES ?4-02?83 A01 .
    Keywords: Ocean currents ; Zooplankton ; Cold Core RIngs ; Chain (Ship : 1958-) Cruise CH125 ; Knorr (Ship : 1970-) Cruise KN53
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 8
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    A crossroads of the Atlantic Meridional Overturning Circulation : the Charlie-Gibbs Fracture Zone data report August 2010 – June 2012 (2014)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: This is the final data report of all mooring data collected by the Woods Hole Oceanographic Institution in 2010-2012 during the experiment A Crossroads of the Atlantic Meridional Overturning Circulation: The Charlie-Gibbs Fracture Zone. The objectives of this experiment were (1) to obtain an improved direct estimate of the mean and low-frequency variability of the deep westward transport of the Iceland-Scotland Overflow Water through the Charlie-Gibbs Fracture Zone (CGFZ), and (2) to gain a better understanding of the causes of the low-frequency variability in the transport of overflow waters through the CGFZ, especially of the role of the North Atlantic Current in generating this variability. The mooring deployment and recovery cruises were on German research vessels, courtesy of Drs. Monika Rhein and Dagmar Kieke: the R/V Meteor cruise M82/2 in August 2010 and R/V Maria S. Merian cruise MSM 21/2 in June 2012, respectively. The CGFZ moored array complemented other moored arrays being maintained by German scientists just west of the CGFZ (Pressure Inverted Echo Sounders, or PIES) and the Faraday Fracture Zone (current meter and microcat moorings). A set of eight moorings were set up across the CGFZ to measure the intermediate and deep water variability for a two-year period, from a depth of 500 m to the ocean floor. The moorings held a total of three McClane Moored Profilers (MMPs), 10 Nortek and 18 Aanderaa current meters, and 36 Seabird MicroCATs, deployed from 18-20 August 2010 through 28-30 June 2012. This yielded a nearly two-year record of velocity, temperature, salinity and pressure. The MMPs profiled every five days, and resulted in a high-resolution time series of temperature, salinity, pressure and velocity data across the interface between the generally eastward flowing Labrador Sea Water carried underneath the North Atlantic Current, and the westward flowing deep Iceland-Scotland Overflow Water.
    Description: Funding was provided by the National Science Foundation Grant OCE-0826656
    Keywords: Ocean circulation ; Ocean currents ; Maria S. Merian (Ship) Cruise MSM21-2 ; Meteor (Ship) Cruise M82-2
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 9
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    Drifter studies in warm core rings (2014)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: The results of multiple deployments of surface drifters in warm core rings of the Gulf Stream are presented. Four satellite drifters (tracked by the Argos system) were deployed on nine separate occasions and two LORAN-C drifters (operated by the University of Miami) were deployed three times. Drifter studies were conducted during four cruises aboard the R/V Endeavor in 1982 in conjunction with the Warm Core Rings Experiment and one cruise of the USNS Bartlett in January 1983 which was sponsored by the Office of Naval Research. Translational velocities and periods of rotation are provided for two rings: 82B and 82H.
    Description: National Science Foundation under grant OCE80-16983
    Keywords: Ocean currents ; Oceanographic buoys ; Warm Core Rings ; Endeavor (Ship: 1976-) Cruise EN83 ; Endeavor (Ship: 1976-) Cruise EN86 ; Endeavor (Ship: 1976-) Cruise EN88 ; Endeavor (Ship: 1976-) Cruise EN90 ; Bartlett (Ship) Cruise 40b
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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