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  • American Geophysical Union  (2)
  • Kiel : Inst. für Meereskunde  (2)
  • Institut für Meereskunde  (1)
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  • 1
    Online Resource
    Online Resource
    GATE : CTD data measured on the F.R.G. ships shipboard operations - calibration - editing : technical report (2017)
    Kiel : Inst. für Meereskunde
    Details Availability
    Type of Medium: Online Resource
    Pages: Online-Ressource , Diagramme
    Series Statement: Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel 22
    URL: https://oceanrep.geomar.de/13685/
    URL: http://dx.doi.org/10.3289/IFM_BER_22
    DOI: 10.3289/IFM_BER_22
    Language: English
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  • 2
    Book
    Book
    GATE : CTD data measured on the F.R.G. ships ; shipboard operations, calibration, editing ; technical report (1976)
    Kiel : Inst. für Meereskunde
    Details Availability
    Description / Table of Contents: The primary aim of this report is to inform the interested GATE scientist about the complete procedures of gaining, calibrating and editing the CTD data from the three FRG research vessels involved in GATE. It is thought to be an integral part of the data sets, and will form part of the documentation sent with the data to the data centers. This report was written according to the recommendations given by the US GATE/C-Scale Workshop at Miami, Fl, 19760202 - 19760206. The user of the data should note that in several respects both the instruments and the ship-board procedures were non-standard. This situation led to special routines for editing the data. Attention should also be given to the comments on the data quality. However, the process of data validation is not finished. An investigation about the interconsistency of the C-scale CTD data is presently underway. (MOD)
    Type of Medium: Book
    Pages: 16, [12] Bl , 15 graph. Darst , 30 cm
    Series Statement: Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel 22
    Language: English
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  • 3
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    Zur Kinematik eines stochastischen Feldes interner Wellen in einer Scherströmung (1981)
    Institut für Meereskunde
    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 117 pp . Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 082 . DOI 10.3289/ifm_ber_82 〈http://dx.doi.org/10.3289/ifm_ber_82〉.
    Details
    Publication Date: 2019-03-20
    Description: OceanRep OceanRep Home Contact Quick Search Simple Search Advanced Search Browse Author Research division Document type Year Course of Study Latest Peer-reviewed Articles All About us GEOMAR Library Open Access Policies Statements Help FAQs Statistics Directions | Contact | Sitemap | Imprint Zur Kinematik eines stochastischen Feldes interner Wellen in einer Scherströmung. Logged in as Barbara Schmidt Manage depositsManage recordsManage shelvesProfileSaved searchesReviewAdminLogout - Tools Peters, Hartmut (1981) Zur Kinematik eines stochastischen Feldes interner Wellen in einer Scherströmung. (Doctoral thesis/PhD), Christian-Albrechts-Universität Kiel, Kiel, Germany, 118 pp. [img] Text Diss. 1981 Peters, H.pdf - Published Version Restricted to Registered users only Download (7Mb) Abstract Für die im Atlantik im Bereich des Äquatorialen Gegenstroms während GATE beobachtete mittlere Schichtung und Scherströmung werden vertikale Eigenschwingungen (Moden) und Dispersionskurven hochfrequenter (0.3 bis 15 cph) interner Wellen berechnet. Ein spektrales Modell der Kinematik freier, linearer interner Wellen wird durch die stochastische Überlagerung so gewonnener Moden erzeugt. Modellrechnungen werden zu Vergleichs- und Testzwecken für einfache Grundzustände (N 2 = const.; u = const.) durchgeführt. Die den Verhältnissen während GATE entsprechenden Rechnungen ergeben folgende Resultate: In den Energiespektren wird eine Schulter bei Frequenzen zwischen 1.5 und 4 cph beobachtet, die einen nicht unbeträchtlichen Teil der Gesamtenergie des Wellenfeldes repräsentiert. Diese Schulter kann im wesentlichen nicht durch kinematische Effekte erklärt werden, sie muß dynamische Ursachen haben. Im Frequenzbereich 1.5 bis 4 cph wird das Wellenfeld praktisch ausschließlich von der ersten Mode beherrscht. Nach den Beobachtungen sind die Wellen überwiegend gegen die mittlere Strömung gerichtet. Zur Erklärung dessen müssen sowohl dynamische als auch kinematische Effekte herangezogen werden. Das beobachtete Maximum der Kohärenz zwischen Strömung in der Deckschicht und Temperatur in der Sprungschicht zwischen 1. 5 und 4 cph ist prinzipiell der Kinematik des Systems zuzuschreiben. Die Skalen des Wellenzahlspektrums, die sich aus der Anpassung des Modells an die Daten ergeben, sind derart, daß nur ein Teil der Anisotropie des Systems von Moden und Dispersionskurven wirksam wird. Die Vertikalstruktur der beobachteten Strömungsfluktuationen kann mit dem Modell nicht vollständig beschrieben werden. Das Modell wird kritisch diskutiert.
    Type: Thesis , NonPeerReviewed
    Format: text
    DOI: 10.3289/ifm_ber_82
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  • 4
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    A regional modeling study of the entraining Mediterranean outflow (2010)
    American Geophysical Union
    Details
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2007. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 112 (2007): C12005, doi:10.1029/2007JC004145.
    Description: We have evaluated a regional-scale simulation of the Mediterranean outflow by comparison with field data obtained in the 1988 Gulf of Cádiz Expedition. Our ocean model is based upon the Hybrid Coordinate Ocean Model (HYCOM) and includes the Richardson number–dependent entrainment parameterization of Xu et al. (2006). Given realistic topography and sufficient resolution, the model reproduces naturally the major, observed features of the Mediterranean outflow in the Gulf of Cádiz: the downstream evolution of temperature, salinity, and velocity profiles, the mean path and the spreading of the outflow plume, and most importantly, the localized, strong entrainment that has been observed to occur just west of the Strait of Gibraltar. As in all numerical solutions, there is some sensitivity to horizontal and vertical resolution. When the resolution is made coarser, the simulated currents are less vigorous and there is consequently less entrainment. Our Richardson number–dependent entrainment parameterization is therefore not recommended for direct application in coarse-resolution climate models. We have used the high-resolution regional model to investigate the response of the Mediterranean outflow to a change in the freshwater balance over the Mediterranean basin. The results are found in close agreement with the marginal sea boundary condition (MSBC): A more saline and dense Mediterranean deep water generates a significantly greater volume transport of the Mediterranean product water having only very slightly greater salinity.
    Description: National Science Foundation via grant OCE0336799 and the National Ocean Partnership Program (NOPP) via award N000140410676.
    Keywords: Mediterranean outflow ; Entrainment parameterization ; Climate
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
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  • 5
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    Somali Current rings in the eastern Gulf of Aden (2010)
    American Geophysical Union
    Details
    Publication Date: 2022-05-26
    Description: Author Posting. © American Geophysical Union, 2006. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 111 (2006): C09039, doi:10.1029/2005JC003338.
    Description: New satellite-based observations reveal that westward translating anticyclonic rings are generated as a portion of the Somali Current accelerates northward through the Socotra Passage near the mouth of the Gulf of Aden. Rings thus formed exhibit azimuthal geostrophic velocities exceeding 50 cm/s, are comparable in overall diameter to the width of the Gulf of Aden (250 km), and translate westward into the gulf at 5–8 cm/s. Ring generation is most notable in satellite ocean color imagery in November immediately following the transition between southwest (boreal summer) and northeast (winter) monsoon regimes. The observed rings contain anomalous fluid within their core which reflects their origin in the equator-crossing Somali Current system. Estimates of Socotra Passage flow variability derived from satellite altimetry provide evidence for a similar ring generation process in May following the winter-to-summer monsoon transition. Cyclonic recirculation eddies are observed to spin up on the eastern flank of newly formed rings with the resulting vortex pair translating westward together. Recent shipboard and Lagrangian observations indicate that vortices of both sign have substantial vertical extent and may dominate the lateral circulation at all depths in the eastern Gulf of Aden.
    Description: This investigation is a component of the Red Sea Outflow Experiment (REDSOX) sponsored by the U.S. National Science Foundation through grants OCE 98-18464 and OCE 04-24647 to the Woods Hole Oceanographic Institution and OCE 98-19506 and OCE 03-51116 to the University of Miami.
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
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