Hydrographical and chemical observations during an achor station in the eastern North Atlantic, supplement to: Gieskes, Joris M; Meincke, Jens; Wenck, Alfred (1970): Hydrographische und chemische Beobachtungen auf einer Ankerstation im östlichen Nordatlantischen Ozean. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe A Allgemeines, Physik und Chemie des Meeres, Gebrüder Bornträger, Berlin, Stuttgart, A8, 1-11

• Main Authors: Gieskes, M J, Meincke, Jens, Wenck, Alfred
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 1970
• Subjects: Water sample; M8; Meteor 1964; Institute for Geosciences, Christian Albrechts University, Kiel GIK/IfG; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.603998; https://doi.pangaea.de/10.1594/PANGAEA.603998

Serial observations of temperature, salinity, oxygen, alkalinity and pH are presented. They were carried out during an anchor station of R.V. „Meteor“ west of Cape Sao Vincente (Portugal) in the area of the maximum Mediterranean water outflow, which follows the continental slope off Portugal. Two observational results are pointed out: The Mediterranean water masses spread out into the Atlantic Ocean, consisting of two distinct layers at depth of 700 m (T=12.0 °C, S=36.15 ‰) and 1250 m (T=11.3 °C, S=36.40 ‰). The salinity proved to be the most significant indicator of the observed stratification.The values of dissolved oxygen content, alkalinity and pH in the very near bottom layer (1 m above the bottom at depth of 3250 m) are different from the values at depth of 15 m to 100 m above the bottom. As this phenomenon is not observed for the salinity, the changes may be interpreted in terms of chemical and biological processes at the sediment-water interface.