Description: The present volume gives the observed physical and chemical data obtained by R. V. "Meteor" in the Indian Ocean during her cruise 1964/65. The tables are based on the computations made by the National Oceanographic Data Center (NODC) in Washington. In addition to the normally communicated data, the tables contain four chemical parameters: alkalinity, ammonia, fluoride, and calcium.

Description: In this paper the sections for temperature and salinity are presented, which were obtained during the cruise of R. V. "Meteor" in the Indian Ocean (1964/65). The hydrographic observations in the Arabian Sea, had the aim to provide information on the influence of the NE-monsoon on the distribution of salinity and temperature off the east coast of Africa and off the west coast of India. Special attention was given to the spreading of highly saline water from the Red Sea and the Persian Gulf. The track of the expedition was layed out according to these plans and is presented in figure 1. The data were collected by means of hydrographic casts with newly developed water bottles, and by means of "in-situ" measurements with the "bathysonde", an instrument for the continuous recording of electrical conductivity, temperature and pressure. This paper only deals with the data of the casts which are presented in a special publication together with the chemical data. The hydrographic conditions off the east coast of Africa are characterised by a rather complicated distribution of salinity within the first 1000 m of depth with several intermediate maxima and minima (hydrographic sections III-IX). This is due to the spreading of highly saline water mainly from the Red Sea, which can be traced southwards at least as far as 4° N (figure 9). Similar complicated conditions were found off the west coast of India (sections XI-XVI). Here the cause can be traced back to watermasses from the Persian Gulf. In depths below 2 000 m the TS-relation is virtually the same at both sides of the Arabian Sea.

Description: The following tables show physical and chemical data observed by the "Meteor" in the Persian Gulf and the Strait of Hormus. This study was performed in accordance with the general programme of the International Indian Ocean Expedition (IIOE) during the period from March 25 th until April 16th, 1965. The water temperature was measured by reversing thermometers; in most cases two instruments were used simultaneously. The absolute mean temperature difference of this double measurement is 0.0153 °C. The salinity was determined both by salinometer and by titration. In this case the absolute mean difference amounts to 0.0174‰. The computations of the density, the specific volume anomaly, the dynamic depth anomaly, the sound velocity and the interpolation for standard depths were carried out by the National Oceanographic Data Center (NODC), Washington.

Description: Im Elbeaestuar erfolgten in der Zone des Schwebstoffmaximums hydrographische, mineralogische und bakteriologische Untersuchungen, um Einblick in die Sedimentationsvorgänge und die Zusammensetzung der Schwebstoffe zu gewinnen. Bei zwei Dauerstationen querab Brokdorf und einer Profilfahrt von Altenbruch nach Stadersand wurden kontinuierliche Messungen von Trübung, Strömung, Salzgehalt und Temperatur ausgeführt. Ferner erfolgten Bestimmungen des Gehaltes an Seston und partikulärem Kohlenstoff. Die mineralogischen Untersuchungen ergaben, daß die qualitative Zusammensetzung der Schwebstoffe in der Elbe sich kaum von der in der Ost-und Nordsee unterscheidet. Quantitative Unterschiede bei den Elbeproben können auf Transportsondernngsvorgänge im Gezeitenbereich zurückgeführt werden. Es wird die Frage der Entstehung der Trübungszone diskutiert. Die bakteriologischen Untersuchungen ergaben, daß der Mikrobengehalt des Wassers stark von Sedimentationsvorgängen beeinflußt wird. Mit den Salzgehaltsschwankungen ändert sich im Verlauf der Tide auch die Zusammensetzung der Bakterienflora. The hydrographic conditions in the zone of maximal suspended matter of the Elbe Estuary are described by continous records of transparency, currents, salinity, temperature, and by measurements of the content of particulate carbon and seston. Investigations on mineralogical composition of suspended matter show no qualitative differences. But there are quantitative differences, obviously influenced by tidal transport sorting effects. With tidal variations of sedimentation and salinity the distribution and composition of the bacterial flora is changing.

Description: Es wird untersucht, in welcher Weise Potentialmessungen an Galvanischen Zellen geeignet sind zur Ermittlung von Ionenkonzentrationen in Meerwasser. An Hand verschiedener für die Bestimmung von Chloridkonzentrationen geeigneter Zellanordnungen wird betrachtet, wie Änderungen der Konzentration, der Temperatur und des Druckes die Elektromotorische Kraft einer Galvanischen Kette beeinflussen. The application of potential mcasurements in the determination of ionic concentrations in seawater is investigated. Different types of galvanie eells suitable for the determination of chlorid ions are discussed together with changes of concentration, temperature and pressure ancl their effects on the electromotive force of the electrode systems.

Description: Es werden Versuche mit zwei verschiedenartig aufgebauten Konzentrationszellen beschrieben, deren EMK auf Grund der Verwendung von Silber/Silberchlorid-Elektroden von der Chloridkonzentration im Elektrolyten abhängt. Die Arbeitsweise von Zellen mit Polyäthylen- und mit Ionenaustauschmembranen wird durch Meßreihen mit reinen NaCI-Lösungen und mit Seewasser verglichen. Es wird eine potentiometrische in-situ Anordnung beschrieben und ein Beispiel für eine schnelle Oberflächenaufnahme der Salzgehalts- und Temperaturverteilung gegeben. Experiments are discussed with two concentration cells of different construction. The emf of these cells depends on the concentration of chloride ions in solution because of the silver/silverchloride-electrodes used. The behaviour of cells with polyethylen membrans and with ion exchange membrans is compared by measurements with pure NaCl-solutions and with sea water. A potentiometric in-situ device is described and an example is given for a fast way of recording the surface distribution of salinity and temperature.

Description: Die hydrographischen Verhältnisse des Nord-Ostsee-Kanals werden beschrieben auf Grund von Untersuchungen während zweier Durchfahrten am 5. 10. und 9. 10. 1964. Neben kontinuierlichen Registrierungen des Salzgehaltes, der Temperatur und der Durchsichtigkeit durch Schleppsonden wurden Wasserproben untersucht auf ihren Gehalt an partikulärem Kohlenstoff und Seston. The hydrographic conditions in the Kiel-Canal are described by measurements during two passages on Oct. 5 and Oct 9 1964. Besides continous records of salinity, temperature and transparency by towed in-situ-instruments water samples were analysed for their content of particulate carbon and seston.

Description: 1964 wurden in der Eckernförder Bucht hydrographische und produktionsbiologische Untersuchungen durchgeführt, wobei der Schwerpunkt auf der Bestimmung des partikulären Kohlenstoffs und des partikulären Phosphors lag. Die erhaltenen Resultate werden in Diagrammen gezeigt. In 1964 combined hydrographic and productivity measurements were started in the Bay of Eckernförde with recently developed instruments. Especially the recording instruments for determination of total and particulate organic carbon and particulate phosphorus were examined. Some results are given in diagrams, which offer an idea of the hydrographical situation and the start of the spring bloom of phytoplankton.