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  • 1
    Call number: ZS-090(537) ; ZSP-168-537
    In: Berichte zur Polar- und Meeresforschung
    Type of Medium: Series available for loan
    Pages: 133 S. , Ill., graph. Darst., Kt.
    ISSN: 1618-3193
    Series Statement: Berichte zur Polar- und Meeresforschung 537
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    D.3.
    Location: Lower compact magazine
    Location: Reading room
    Branch Library: GFZ Library
    Branch Library: AWI Library
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  • 2
    Call number: ZSP-168-603
    In: Berichte zur Polar- und Meeresforschung
    Description / Table of Contents: Auf dieser Reise wurde eine Reihe von automatisch messenden Plattformen erfolgreich getestet und eingesetzt. Diese Plattformen dienen zur Erfassung des Energie- und Materialaustausches zwischen Ozean und Atmosphäre und sind für den Einsatz auf Handels- und Forschungsschiffen (Voluntary Observing Ships VOS) geplant. Die meteorologischen Messungen dienten in erster Linie, der Aerosol-Untersuchung mit Fernerkundungsmethoden. Ziel der Untersuchungen ist die Erfassung der meridionalen Verteilung des Aerosols in der Troposphäre, des Gradienten und von Aerosol-Wolken. Ein Acoustic Doppler Current Profiler (ADCP) wurde eingesetzt, um die saisonalen Strömungsverhältnisse im Ozean zu erfassen und zu analysieren.Zusätzlich sollen diese Messungen als Referenz für die verankerten Systeme am Äquator auf 23°W dienen.
    Pages: Online-Ressource
    ISSN: 1866-3192
    Series Statement: Berichte zur Polar- und Meeresforschung 603
    Location: Reading room
    Branch Library: AWI Library
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  • 3
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    In:  (Doctoral thesis/PhD), Christian-Albrechts-Universität Kiel, Kiel, Germany, 83 pp
    Publication Date: 2018-03-02
    Type: Thesis , NonPeerReviewed
    Format: text
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  • 4
    Publication Date: 2016-11-17
    Description: Here we present results from a combined moored current meter/hydrography array deployed within the Iceland Scotland Overflow Water (ISOW) plume on the eastern flank of Reykjanes Ridge approximately 1000 km downstream of Faroe Bank Channel (FBC) between June 2000 and August 2002. Based on the array measurements during this period the ISOW plume exhibited a time mean volume transport of 3.8±0.6 Sv (standard error, 1 Sv=106 m3/s). The transport estimate favorably compares with other recent estimates obtained by different methods, confirming that the fate of the ISOW plume downstream of the array is far from being fully understood. Historical observations show that drainage of ISOW through Charlie–Gibbs Fracture Zone (CGFZ) only amounts to 60% of our upstream transport estimate. To date, no reliable transport estimates of the fractions of ISOW recirculating within the Iceland Basin or being drained through fracture zones other than CGFZ do exist. Our observed 2-years-long transport time series show pronounced subseasonal variability with a standard deviation of 1.3 Sv. Simultaneous hydrographic observations reveal, that temporal changes in the strength of the flow go along with changes in the water mass properties. Periods of stronger flow within the ISOW plume coincide with a reduction in salinity.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , NonPeerReviewed
    Format: application/pdf
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  • 5
    Publication Date: 2014-12-12
    Repository Name: EPIC Alfred Wegener Institut
    Type: Weekly Reports , NonPeerReviewed
    Format: application/pdf
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  • 6
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    Elsevier
    In:  Deep Sea Research Part I: Oceanographic Research Papers, 43 (9). pp. 1461-1473.
    Publication Date: 2016-10-20
    Description: As a contribution to the World Ocean Circulation Experiment's Deep Basin Experiment an array of current meters was deployed across the southern boundary of the Brazil Basin in early 1991 and subsequently recovered in late 1992. On the associated mooring cruises two hydrographic sections were also made. Both the current meter and shipboard temperature measurements show a significant warming of the Antarctic Bottom Water flowing into the Brazil Basin. This amounts to approximately 0.1 °C at 0.2°C, the coldest layer flowing over the Lower Santos Plateau, and 0.03°C in the coldest water that flows northward through the Vema Channel. In the latter, measurements over the past 20 years suggest little variation (〈0.005°C) so the 0.03°C change over a 2 year period is considered quite significant.
    Type: Article , PeerReviewed
    Format: text
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  • 7
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    In:  Tech-Report Technologien und Innovationen aus Schleswig-Holstein, 3 . p. 3.
    Publication Date: 2016-06-15
    Type: Article , NonPeerReviewed
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  • 8
    Publication Date: 2018-04-18
    Description: Sea surface salinity (SSS) was measured since 1896 along 60°N between Greenland and the North Sea and since 1993 between Iceland and Newfoundland. Along 60°N away from the shelves, and north of 53°N, the amplitude of the seasonal cycle is comparable to or less than interannual variability. In these parts of the North Atlantic subpolar gyre, large-scale deviations from the seasonal cycle correlate from one season to the next. This suggests that in these regions, summer and autumn surface data are useful for monitoring changes in upper ocean salinity best diagnosed from less common winter surface data. Further south near the subarctic front, the Labrador Current or near shelves where seasonal variability is strong, this is not the case. Along 60°N, the multiannual low-frequency variability is well correlated across the basin and exhibits fresher surface water since the mid 1970s than in the late 1920s to 1960s. SSS in the Irminger Sea along 60°N lags by 1-year SSS farther east in the Iceland Basin. Variability between Iceland and Newfoundland within the Irminger Sea north of 54°N presents similar characteristics to what is observed along 60°N. Variability near the northwest corner of the North Atlantic Current (52°N/45°W) is larger and is not correlated to what is found further north. Maps of SSS were constructed for a few recent seasons between July 1996 and June 2000, which illustrate the fresh conditions found usually during that period across the whole North Atlantic subpolar gyre, although this includes an episode of higher salinity. The SSS anomaly maps have large uncertainties but suggest that the highest SSS occurred before the spring of 1998 in the Iceland Basin, and after that, in the Irminger Sea. This is followed by fresher conditions, first in the Labrador and Iceland Basin, reaching recently the Irminger Sea.
    Type: Article , PeerReviewed
    Format: text
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  • 9
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    American Meteorological Society
    In:  Journal of Physical Oceanography, 29 . pp. 145-157.
    Publication Date: 2018-04-06
    Description: As a contribution to the WOCE Deep Basin Experiment, an array of current meters with individual record lengths exceeding ii years was set across the southern boundary of the Brazil Basin between early 1991 and early 1996. The array spanned the Santos Plateau, the Vema Channel, and the Hunter Channel, all areas believed to be important for transport of Antarctic Bottom Water between the Argentine and Brazil Basins. From the combination of geostrophic velocities computed from hydrographic stations and those directly measured, the total transport of bottom water (potential temperature below 2 degrees C) is estimated to be about 6.9 Sv (Sv = 10(6) m(3) s(-1)) northward, with about 4 Sv coming through the Vema Channel and the remainder through the Hunter Channel. Properties of the eddy field are also discussed. Eddy energy levels and their spatial distribution are similar to comparable regimes in the North Atlantic. Integral timescales vary from a few days to several weeks with distance from the Brazil Current and the western boundary. The eddy heat Bur is in the same direction as the heat advection by the mean flow but considerably smaller.
    Type: Article , PeerReviewed
    Format: text
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  • 10
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    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 288 . , 129 pp.
    Publication Date: 2016-06-23
    Type: Report , NonPeerReviewed
    Format: text
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