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  • Other Sources  (181)
  • Articles (OceanRep)  (167)
  • CITATION GEO-LEO  (14)
  • 1995-1999
  • 1980-1984  (181)
  • 1980  (181)
  • 1
    Publication Date: 2022-07-15
    Description: Investigations on the systematic position of the foraminifer generally refered to as Hastigerina demens known from the Aquitanian of the Mayence basin have shown, that a new classification has to be made. Based on the shown protoforamina the species has to be considered as belonging to the family Polystomellidae EIMER & FICKERT, 1899. The aberrant test of the species which above all appears in the evolute arrangement of the chambers, has induced the author to place the species in a new genus Nonionoides n. gen. For N. demens a benthonic way of life has to be assumed. Therefore no autochthon planctonic living foraminifers are known from the Hydrobia beds and Corbicula beds of the Mainz basin.
    Description: research
    Keywords: ddc:562
    Language: German
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  • 2
    Publication Date: 2022-09-16
    Description: Der erste bestimmbare Tetrapode des Oberrotliegenden ein kleinwüchsiger Dissorophide (Labyrinthodontia, Amphibia) wird mit seinem Schädeldach und disartikulierten Elementen des Gliedmaßenskelettes beschrieben. Abweichend von den bekannten Dissorophidae besitzt er ein wahrscheinlich unverknöchertes Quadratum und eine kräftige, teilweise radiale Schädelskulptur. Auch die Existenz eines aus kleinen Partikeln bestehenden Knochenmosaiks oberhalb des Auges (,,‚Sklerotikalpflaster‘‘), die mediale Begrenzung des Ohrschlitzes und die Form des Ilium sind ungewöhnlich für die Dissorophidae. Von den verschiedenen, bei Dissorophiden vorkommenden Merkmalen sind hervorzuheben: die abgeflachten und breit zugerundeten Zahnspitzen und die Existenz eines ‚‚nasal flange‘ auf Nasale und Praefrontale.
    Description: Abstract: The first determinable tetrapod from the upper Rotliegendes, a small dissorophid (Amphibia, Labyrinthodontia), is described. Only the skull roof and disarticulated limb bones are preserved. Several features distinguish this species from known dissorophids. The quadrate appears to be unossified and the sculpturing of the skull roof is more pronounced and has a partially radial pattern. Unusual for dissorophids are a mosaic of small bony particles in the eye lid, the pattern of the medial rim of the otic notch and the shape of the ilium. Among the common characteristics of dissorophids are the laterally compressed monocuspid tooth crowns and a nasal flange projecting from undersurface of nasal and prefrontal.
    Description: research
    Keywords: ddc:567
    Language: German
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  • 3
    Publication Date: 2022-07-25
    Description: research
    Keywords: ddc:562
    Language: German
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  • 4
    Publication Date: 2022-07-25
    Description: research
    Keywords: ddc:554.3
    Language: German
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  • 5
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    Publication Date: 2023-01-16
    Description: Die Rehbergschichten treten im linksrheinischen Buntsandstein zwischen Trifels- und Karlstalschichten auf. Es ist ein Wechsel von Felsbänken und Dünnschichten, wobei die Felsbänke die petrographischen Merkmale der Trifelsschichten, die Dünnschichten die sedimentologischen Merkmale der Unteren Karlstalschichten enthalten. Die Untergrenze der Rehbergschichten bildet die tiefste Lage von Dünnschichten (Scheidter Niveau). Die Obergrenze der Rehbergschichten bildet die stratigraphisch höchste Felsbank mit den petrographischen Merkmalen der Trifelsschichten oder des smi. Stratigraphisch markante Felsbänke bestehen innerhalb der Rehbergschichten nicht, eine stratigraphische und kartographische Unterteilung der Rehbergschichten ist nicht möglich. Genetisch werden die Rehbergschichten als Wechsel zwischen äolisch und fluviatil sedimentierten Schichten verstanden. Die Rehbergschichten tragen in der Landschaft weite Verebnungsflächen, wobei Verebnungen und Hangverflachungen in verschiedenen Niveaus übereinander vorkommen.
    Description: Abstract: The Rehberg sandstone is found in the Southwest German and Alsatian Buntsandstein between Trifels and Karlstal sandstones. Banquettes and lamelliform layers relieve one another, the banquettes containing the petrographic characteristics of the Tifels sandstone and the fine bedded layers the sedimentological characteristics of the lower Karlstal layers. The lower boundary of the Rehberg sandstone forms the lowest deposit of the fine bedded layers (Scheidter Niveau). The upper boundary of the Rehberg sandstone forms the stratigraphically highest banquette with the petrographic characteristics of the Trifels sandstone or the sny. Within the Rehberg sandstone stratigraphically noticeable banquettes do not exist. A Stratigraphie and cartographic division of the Rehberg sandstone is not possible. As far as genesis is concerned, the Rehberg sandstone are regarded as an alternation of eolian and fluviatile sedimented layers. The morphological structure of the landscape formed by the Rehberg sandstone shows wide peneplanations which occur at different levels.
    Description: research
    Keywords: ddc:554.3 ; Buntsandstein ; Pfalz ; Stratigraphie
    Language: German
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  • 6
    Publication Date: 2023-01-20
    Description: In der vulkanischen Westeifel wurden seit 1823 kraterförmige Erweiterungen einiger Täler, sogenannte Kesseltäler, als vermutlich den Maaren nahestehend beschrieben; ihre Genese blieb jedoch unklar. Die geomagnetische Vermessung, einige Bohrungen und neue, bisher unbekannte Aufschlüsse weisen im Untergrund von 4 der 5 bearbeiteten Kesseltälern Pyroklastite nach. Diese Kesseltäler sind eindeutig als Maare anzusehen, deren ursprünglich vorhandene, ausgeworfene Pyroklastite bereits überwiegend erodiert wurden. Folglich werden die meisten Kesseltäler als alte Maare interpretiert.
    Description: Abstract: In the volcanic field of the Western Eifel, Germany, local crater-shaped enlargements of valleys, so-called “Kesseltäler", have been known since 1823. A genetic relationship with the maar volcanoes was always assumed but owing to the lack of ejecta could not be substantiated. Geomagnetic studies, a few bore holes and new or so far unknown outcrops of pyroclastic rocks prove that most "Kesseltäler" in the westem Eifel are rather old maars the ejecta of which having been largely or completely eroded.
    Description: 1. Einleitung 2. Bisherige Vorstellungen über Kesseltäler der Westeifel 3. Untersuchung der Kesseltäler 3.1. Lage 3.2. Untersuchungsmethoden 3.3. Kesseltal südlich des Hohen List 3.4. Kesseltal südöstlich Mehren 3.5. Kesseltal südsüdöstlich Steineberg 3.6. Kesseltal bei Wollmerath 3.7. Kesseltal bei Kennfus 4. Diskussion
    Description: research
    Keywords: ddc:551.210901 ; Eifel ; Vulkanismus ; Maare
    Language: German
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  • 7
    Publication Date: 2024-02-12
    Description: Sandmischkulturen unterschiedlichen Alters sowie einige Ausgangstorfe der kultivierten Moorböden wurden auf den Gehalt und die Verteilung an organisch gebundenem Stickstoff in verschiedenen N-Fraktionen untersucht. Mit zunehmendem Alter der Sandmischkulturen steigt der Humifizierungsgrad und der Gesamtstickstoffgehalt der organischen Substanz. Parallel dazu steigt in Relation zum Gesamt-Stickstoff der Anteil des insgesamt nicht-hydrolysierbaren, vorwiegend heterozyklisch organisch gebundenen Stickstoffs stärker an, und entsprechend stärker verringert sich der Anteil des insgesamt hydrolysierbaren Stickstoffs. Im Zuge dieser Umstrukturierung der organischen Substanz nähert sich die Verteilung des organisch gebundenen Stickstoffs auf die einzelnen N-Fraktionen auch in Moorkulturböden dem Muster, wie es an isolierten Huminsäuren aus Podsolen oder Schwarzerden bekannt ist. Auch der absolute Gehalt an Aminosäure-N pro g organischer Substanz nimmt mit zunehmendem Alter der Sandmischkulturen zu, eine typische Veränderung am Verteilungsmuster der einzelnen Aminosäuren zueinander ist jedoch nicht zu erkennen. Bei den Aminozuckern tritt dagegen eine charakteristische Veränderung ein. Während die Relation von Glukosamin zu Galaktosamin im sauren Hochmoortorf etwa 1 ist, liegt diese Relation in der Fehnkultur bei 2,5.
    Description: Sand-mixed cultivated soils of different age and the original peat Substrates were analysed for their nitrogen content and for their distribution of organically bound nitrogen in different nitrogen fractions. With increasing age of sand-mixed cultivated bogs the degree of humification and the total nitrogen content of the organic matter increase as well in these soils. Corresponding with these changes the relative amounts of non hydrolysable , heterocyclically bound nitrogen increase more than the relative amounts of total hydrolysable nitrogen. In the course of this structural change of the organic matter the distribution pattern of organically bound nitrogen in different nitrogen fractions of the sand-mixed cultivated soils becomes simular to that which is known from isolated humic acids of podsolic soils or chernozems. The absolute amount of amino-acid-ni trogen per g organic matter increases with the age of sand-mixed cultivated soils too. A typical change in the distribution pattern of the different amino acids was not observed. On the other side a typical change in the distribution pattern of amino sugars takes place. Whereas the ratio of glucosamine to galacto samine in the original high moor peat is near 1, the corresponding ratio in the older sand-mixed cultivated soil is about 2,5.
    Description: research
    Description: DFG, SUB Göttingen, DGMT
    Keywords: ddc:553.21 ; Moor ; Torf ; peat ; peatland ; Bodenkunde ; Stickstoff ; nitrogen
    Language: German
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  • 8
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    Universität Göttingen,Abteilung Bodenphysik
    In:  Universität Göttingen
    Publication Date: 2024-04-21
    Description: research
    Keywords: Tropischer Regenwald ; Sediment ; Pleistozän-Holozän-Grenze ; Pleistozän ; Kordilleren ; Amazonastiefland ; Peru
    Language: German
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  • 9
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    Universität Göttingen,Abteilung Bodenphysik
    In:  Universität Göttingen
    Publication Date: 2024-04-25
    Description: research
    Keywords: Stoffhaushalt ; Ökosystemforschung ; Heidekraut ; Heide ; Nordwestdeutschland
    Language: German
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  • 10
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    Universität Göttingen,Abteilung Bodenphysik
    In:  Universität Göttingen
    Publication Date: 2024-04-25
    Description: research
    Keywords: Gülle ; Schwein ; Nährstoffhaushalt ; Auswaschung ; Düngung ; Lysimeteruntersuchung ; Kulturboden ; Sandboden ; Nordwestdeutschland
    Language: German
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  • 11
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    In:  Herausgeberexemplar
    Publication Date: 2024-03-07
    Description: Zwei Forschungsreisen (1974, 1979) führten den Verfasser nach Feuerland. Dabei wurden besonders die bipolaren Pflanzensippen studiert, die sich vorwiegend auf den dortigen Mooren finden. Das Inventar dieser amphi-arktischen Taxa umfaßt 19 Blütenpflanzen und 9 Moose, die sich zu Pflanzengesellschaften zusammenfinden und denen der Holarktis sehr ähnlich sind.
    Description: The author made two research expeditions to Tierra del Fuego. The amphi-arctic plant taxa were studied, which predominate in the peatlands. The inventory of the amphi-arctic plant taxaincludes 19 angiosperms and 9 mosses in plant associations resembling those of the holarctic regions.
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: ddc:553.21 ; ddc:581.7 ; Moor ; Torf ; Vegetation ; peatland ; peat
    Language: German
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  • 12
    Publication Date: 2024-04-19
    Description: Einer Anregung des 11. Arbeitskurses Niederdollendorf folgend, wurde eine Methode der Bearbeitung farbiger Originale kartographischer Landschaftsdarstellung entwickelt und erprobt. Eine erste Bestandsaufnahme hatte einen Bedarf an solchen Darstellungen bestätigt; geeignete Techniken stehen zur Verfügung, es fehlt jedoch eine lern- und lehrbare Methode der Bearbeitung, die unabhängig von der Person des Bearbeiters vergleichbare Ergebnisse liefert. Hier wurde nun ein in der thematischen Kartographie als Anleitung zu planmäßigen Vorgehen bewährtes System von Arbeitsschritten mit einigen Modifikationen als Richtlinie für die Bearbeitung von Landschaftskarten eingesetzt. Nicht zuletzt wird die Arbeitsweise von den verfügbaren Unterlagen beeinflußt und entweder der Ableitung topographischer Folgemaßstabskarten oder der freien Bearbeitung thematischer Karten entsprechen.
    Description: According to a suggestion made by the 11th study group of Niederdollendorf a method of how to treat coloured originals of cartographic landscape representation has been developed and testet. A first stocktaking had confirmed the demand for such types of representation; although suitable techniques are available, a learnable and teachable method of treatment is needed which provides comparable results independent of the person incharge. In this case a slightly modified system of working steps has been used as a guideline for the treatment of maps which is a time-tested instruction for systematic procedure in thematic cartography. This method is not least influenced by the available records, corresponding either to a derivation of topographic maps on a consecutive scale or to the free treatment of thematic maps.
    Description: PUHLMANN, G.: Eine Methode der Bearbeitung farbiger Originale kartographischer Landschaftsdarstellung ... 5 ; KOCHLER, J.: "Landschaften" in China und die Präzisierung dieser Kategorie in verschiedenen Typologien zur Gliederung des chinesischen Territoriums ... 13 ; STRAUB, W.: Eine Vegetationskarte der Volksrepublik China ... 23 ; MERTINS, M.: Eine Landschaftskarte der Volksrepublik China ... 71 ; BETKE, D. : Anmerkungen zu zwei kartographischen Neuerscheinungen zur Landnutzung und Vegetation der VR China ... 123 ;
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: ddc:526 ; ddc:555 ; Landschaftskartierung ; Kartografie ; China
    Language: German
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  • 13
    Publication Date: 2024-04-18
    Description: Ausgehend von der Überlegung, daß sich unterschiedliche Faziesbedingungen nicht nur in sedimentologischen Merkmalen, sondern auch in ingenieurgeologischen Eigenschaften und damit im bodenmechanischen Verhalten widerspiegeln müssen, wird für die Sedimente des Küstenholozäns ein ingenieurgeologisches Ordnungsprinzip auf der Basis bodenmechanischer Kennziffern entwickelt. Für drei Gebiete der südlichen Nordsee (Emden, Wilhelmshaven, Bremerhaven) wird bodenmechanisches Datenmaterial aus eigenen Untersuchungen und aus zahlreichen Baugrundgutachten in das gültige geologisch lithologische Ordnungsschema (BARCKHAUSEN et a l . 1977) eingepaßt und dann auf seine ingenieurgeologische Gruppenstruktur hin untersucht. Von insgesamt 1200 lithofaziell zugeordneten Proben aus dem Untersuchungsschwerpunkt Emden-Krummhörn und den Vergleichsgebieten Wilhelmshaven-Voslapp und Bremerhaven liegen Daten über Korngrößenverteilung, Glühverlust, Porenziffer, Wassergehalt, Wichte, Konsistenzgrenzen, Aktivität, Kohäsion, Reibungswinkel, c -Festigkeit und Steifemoduln von vier Laststufen vor, die mit multivariaten statistischen Methoden gruppiert und korreliert werden…
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: ddc:624.151 ; ddc:551.3
    Language: German
    Type: doc-type:book
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  • 14
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    Berlin: Reimer
    In:  Herausgeberexemplar
    Publication Date: 2024-04-18
    Description: Anatektische Schmelzen haben bei der Entstehung granitischer bis dioritischer Magmen in der Erdkruste eine entscheidende Bedeutung. Die große Tiefe und breite Ausdehnung, in der sich sialische Granitisations-Prozesse vollziehen, bedingen aber auch die Seltenheit ihres Aufschlusses an der Erdoberfläche. An Stelle dieser Übergänge metamorph -〉 magmatisch in situ (ERDMANNSDÖRFFER, 1948) wurden daher stets die wesentlich kleinräumigeren Erscheinungen in Migmatiten untersucht. Man ging dabei von der Voraussetzung aus, daß diese als "Modell Systeme" anzusehen sind (MEHNERT, 1968/71). Die meisten geochemischen Untersuchungen zu diesem Thema berücksichtigten bisher nur die Hauptelemente. Angaben über Spurenelement-Konzentrationen basieren meist nur auf wenigen Einzelanalysen. Als Grundlage der hier vorgelegten Zusammenfassung geochemischer Daten zur Migmatitgenese dienten im wesentlichen die petrologischen Untersuchungen anatektischer Gesteine von MEHNERT und von BÜSCH (Zitate im Text). Diese Basis wurde durch Hinzunahme von neueren Literaturdaten erweitert. Die Analyse einer möglichst großen Anzahl von Einzelproben von Gneisen, Leukosomen und Melanosomen auf Haupt-, Neben- und Spurenelemente und die Berücksichtigung der Auswirkungen der Streuungen erbrachte neue Erkenntnisse…
    Description: thesis
    Description: DFG, SUB Göttingen
    Keywords: ddc:552.4 ; ddc:551.9 ; Geochemie ; Migmatit ; Schwarzwald
    Language: German
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  • 15
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    Texas A & M University, Ocean Drilling Program
    In:  Initial Reports of The Deep Sea Drilling Project, 51/52/53 (Part 2) . pp. 1253-1263.
    Publication Date: 2017-02-14
    Description: Secondary minerals found in fracture fillings and in fragments of altered basalt from Holes 417A and 417D were studied by both X-ray diffraction and chemical techniques. Minerals found in fracture fillings from Hole 417A are dominated by montmorillonite, "protoceládonite," analcite, and lesser saponite; celadonite and ferrosaponite are the characteristic secondary minerals in Hole 417D fracture fillings. Assuming that minerals found in such fracture fillings reflect the composition of the secondary fluids that produced them, it is apparent that those from Hole 417A were dominantly Al-rich, while those from Hole 417D were more enriched in Fe, Mg, and K. X-ray diffraction study of bulk samples support such fundamental differences in secondary mineralogy. In addition, the X-ray data on bulk samples suggest that primary plagioclase is the feldspar in Hole 417D rocks, and secondary potassium feldspar is the feldspar in Hole 417A altered rocks. Using available published data on secondary miner?1" found in other altered oceanic crust, it is possible to interpret the differences in secondary mineralogy that exist between the two sites. Secondary minerals present in Hole 417D rocks are believed to have formed under hydrothermally influenced, low temperature, nonoxidative diagenesis; whereas, those present in Hole 417A were produced under similarly low temperatures, but much more highly oxidizing conditions. The fundamental differences in secondary mineralogy between the two sites can be best explained by the accompanying remobilization of elements that involved plagioclase alteration in Hole 417A rocks. A comparison of the composition of Hole 417A and 417D secondary minerals with those found in younger crust suggests that the age of crust, influenced by the changing conditions of alteration, control the chemistry of secondary minerals found in available pore spaces in altered rocks. Minerals found in young crust (〈15 m.y.B.P.) are highly Mg-rich; minerals found in crust of intermediate age (—15-50 m.y.B.P.) are dominantly enriched in Fe and Mg; and those found in older crust have higher contents of Al and K.
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  • 16
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 149 pp
    Publication Date: 2018-01-10
    Type: Thesis , NonPeerReviewed
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  • 17
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 119 pp
    Publication Date: 2018-01-10
    Type: Thesis , NonPeerReviewed
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  • 18
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität, Kiel, Kiel, Germany, 57 pp
    Publication Date: 2018-01-15
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  • 19
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 100 pp
    Publication Date: 2018-01-17
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  • 20
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 127 pp
    Publication Date: 2018-01-17
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  • 21
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    Taylor & Francis
    In:  Marine Behaviour and Physiology, 7 (1). pp. 15-24.
    Publication Date: 2018-04-18
    Description: Foraging rate was highly variable among shore crabs of the same size category and for individual crabs from day to day. Possible physiological reasons for this variability are discussed. Shore crab foraging rate, both in terms of mussels eaten per day and energy intake per day, was estimated to be higher at 17°C than at 10°C. The shape of diet curves and their mode for male shore crabs at 17°C closely resembled those for 10°C, indicating that the temperature increase had no effect on their previously demonstrated optimal foraging strategy. Female and certain male shore crabs showed a preference for prey smaller than for other equivalent sized males. These suboptimally feeding male and female crabs attained a relatively higher prédation rate (mussels day‐1), although their energy intake (KJ day‐1) remained lower than that of optimally feeding males. Preferred mussel size, number of mussels eaten per day and energy intake were strongly related to master chela height. The diet curves for female and suboptimally feeding male shore crabs could be explained by these crabs’ proportionately smaller master chelae.
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  • 22
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    American Geophysical Union (AGU)
    In:  Geophysical Research Letters, 7 (10). pp. 797-800.
    Publication Date: 2020-07-30
    Description: The rate of reaction of OH with CS2 to form OCS by reaction (1) has been measured through observation of O14CS following 254 nm equation image photolysis of mixtures of H2O2 with 14CS2. The OH concentrations have been monitored through simultaneous measurement in the same cell of either (a) the oxidation of CO to CO2, or (b) the removal of a hydrocarbon such as C3H8 or iso-C4H10. The upper limit for the formation of OCS based on (a) corresponds to a rate constant k1 〈 0.3 × 10−14 cm³ molecule−1 sec−1. Other chemical reactions in the system have led to the formation of both 14CO and 14CO2, indicating the existence of a complex combination of reactions such that the observed O14CS need not have been formed by (1). The rate of reaction (1) is sufficiently slow that it is neither an important atmospheric sink for CS2 nor an important source for atmospheric OCS. The reaction of OH with OCS has not been measured in these experiments, but by analogy with k1 it is probably not an important atmospheric sink for OCS nor an important source of SO2.
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  • 23
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    Izdat. Moskovskogo Univ.
    In:  Bulletin of Moscow Society of Naturalists : Biological series , 85 (4). pp. 1-17.
    Publication Date: 2020-04-20
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  • 24
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    Senckenbergische Naturforschende Gesellschaft
    In:  Courier Forschungsinstitut Senckenberg, 40 . Senckenbergische Naturforschende Gesellschaft, Frankfurt a.M., Germany, 35 pp.
    Publication Date: 2017-03-10
    Type: Report , NonPeerReviewed
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  • 25
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    Elsevier
    In:  Animal Behaviour, 28 (4). pp. 1123-1126.
    Publication Date: 2017-02-01
    Description: Pairs of individually recognizable male Octopus vulgaris were observed in a large seawater tank containing two suitable homes (brick pots or plastic buckets). None of the animals established exclusive occupancy of one home and for much of the time both animals were associated together at the same site. Usually one of the two homes was preferred and its occupant was most likely to be the larger animal, or the earlier resident if they were of equal size. Large animals were observed to take food forcefully from smaller octopus. An arm alignment interaction is described which, it is suggested, may be a means by which two octopuses establish their relative sizes.
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  • 26
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    Northwest Atlantic Fisheries Organization
    In:  Serial / Northwest Atlantic Fisheries Organization : N, 153 . pp. 1-22.
    Publication Date: 2020-06-29
    Description: The spatial distribution of shortfin squids in the area between the Gulf Stream and Nova Scotian shelf is analysed based on the data collected during the joint Soviet-Canadian cruise aboard the RTM "Belogorsk" in 1979. A detailed analysis of the hydrological data is made indicating a close correlation between the squid distribution and the structure of water masses in the area. Relationships between the squid distribution and oxygen minimum and temperature profile, as well as between the squid abundance and proportion (per cent) of the North Atlantic Central Water in the slope water masses are established. A method of estimating the young shortfin squid abundance in the given area based on T-S analysis of water masses is proposed. The hypothesis is suggested that larval squids are transported from the continental slope to the northern boundary of the Gulf Stream.
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  • 27
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 149 pp
    Publication Date: 2018-01-09
    Type: Thesis , NonPeerReviewed
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 449 pp
    Publication Date: 2018-01-10
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    Publication Date: 2018-01-10
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 170 pp
    Publication Date: 2018-01-10
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  • 31
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 123 pp
    Publication Date: 2018-01-09
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  • 32
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 202 pp
    Publication Date: 2018-01-10
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  • 33
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 176 pp
    Publication Date: 2018-01-10
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  • 34
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    Elsevier
    In:  Journal of Colloid and Interface Science, 76 (2). pp. 541-556.
    Publication Date: 2016-11-30
    Description: A general method for simulating aerosol size distribution dynamics is developed. The method, based on dividing the particle size domain into sections and dealing only with one integral quantity in each section (e.g., number, surface area, or volume), has the advantages that the integral quantity is conserved within the computational domain and coagulations between all particle sizes are properly accounted for. To demonstrate the simplicity and accuracy of the method for a practical problem, the evolution of a power plant plume aerosol undergoing coagulation is simulated.
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    Scientific American
    In:  Scientific American, 242 (2). pp. 146-154.
    Publication Date: 2017-05-30
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  • 36
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    Brill
    In:  Crustaceana - Supplement, 6 . pp. 84-107.
    Publication Date: 2017-07-04
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  • 37
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    In:  (Diploma thesis), Christian-Albrechts-Universität Kiel, Kiel, 102 pp
    Publication Date: 2020-01-30
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  • 38
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität, Kiel, Kiel, Germany, 124 pp
    Publication Date: 2018-01-15
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  • 39
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 200 pp
    Publication Date: 2018-01-17
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  • 40
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    Akademie-Verlag
    In:  Beiträge zur Meereskunde, 44/45 . pp. 75-88.
    Publication Date: 2016-02-18
    Description: An 88 Proben eines Stechrohrkernes vom Westrand des Arkona Beckens wurden Diatomeenuntersuchungen durchgeführt. Aus den einzelnen Arten- und Individuenspektren wurde die Paläosalinität während der Zeit der Produktion und Sedimentation errechnet. Die so erzielten ökologischen Aussagen und die Zusammensetzung der Diatomeen-Thanatocoenosen wurden genutzt, um die durchteuften Sedimenthorizonte stratigraphisch zuzuordnen.
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  • 41
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    Pergamon Press
    In:  Deep Sea Research Part A: Oceanographic Research Papers, 26A (Suppl. 1). pp. 217-224.
    Publication Date: 2020-08-04
    Description: Current and wind stress time series obtained from the F1-mooring are analysed with the aim of examining linear correspondences and testing the adequacy of linear coupling models at near-inertial frequencies. Significant linear correlations are found in the data set which are consistent with a linear winddriven model of the current system. The current in the mixed layer can be described by inertial oscillations directly forced by the local wind stress. A wind-driven simulation model of the mixed layer currents yields an energy input of 3.10-3 W/m2. The current in the thermocline can be described by a linear internal wave field of downward propagating wave groups driven via Ekman suction by the wind stress field. Internal waves are generated at a rate of 10-3 W/m2, consistently estimated from both kinematic and dynamic considerations.
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  • 42
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    Geological Society of London
    In:  Journal of the Geological Society, 137 (4). pp. 385-402.
    Publication Date: 2016-02-26
    Description: Results of ongoing interdisciplinary investigation of the TAG Hydrothermal Field since discovery in 1972 by the NOAA Trans-Atlantic Geotraverse (TAG) Project are synthesized to document the first and only known active submarine hydrothermal field on a slow-spreading oceanic ridge. The structural setting of the field is the E wall of the rift valley of the Mid-Atlantic Ridge at lat. 26°N where high-intensity hydrothermal activity is favoured by exceptionally close spacing of faults (tens of metres) that enhances permeability and facilitates voluminous circulation, and by projection of the wall directly over intrusive heat sources beneath the rift valley that increases thermal gradients which vigorously drive the upwelling limb of a sub-seafloor hydrothermal convection cell discharging through faults in the wall. A low in residual magnetic intensity coincides with the field and is attributed to hydrothermal alteration of the magnetic mineral component of basalt in the discharge zone. Hydrothermal precipitates in the form of manganese oxide crusts of extreme purity (40% Mn) and rapid deposition rate (200 mm 10-6 yr) cover about 10% of the sea-floor within the field, distributed along faults sub-parallel to the rift valley. The composition and mineralogy of basalts exposed at the sea-floor is indicative of low-temperature zeolite metamorphic facies. Thin sediments of the field exhibit average metal-to-aluminum ratios and non-detrital metal accumulation rates (Fe, Mn, Ni, Co, Cu, Cr) that are high relative to other areas of the Mid-Atlantic Ridge. Present hydrothermal activity is evidenced in the near-bottom water by temperature anomalies and excesses of the primordial isotope 3He, and in the surrounding water column by increases in weak-acid soluble suspended particulate matter enriched in certain metals (Fe × 10; Mn 10%). The observed distribution of hydrothermal products indicates that the special structural and thermal conditions that have concentrated hydrothermal activity in the TAG Hydrothermal Field have persisted for at least 1.4 × 106yr.
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  • 43
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    Nature Publishing Group
    In:  Nature, 288 (5788). pp. 260-263.
    Publication Date: 2016-03-01
    Description: Organic detritus passing from the sea surface through the water column to the sea floor controls nutrient regeneration, fuels benthic life and affects burial of organic carbon in the sediment record. Particle trap systems have enabled the first quantification of this important process. The results suggest that the dominant mechanism of vertical transport is by rapid settling of rare large particles, most likely of faecal pellets or marine snow of the order of 〉200 μm in diameter, whereas the more frequent small particles have an insignificant role in vertical mass flux4–6. The ultimate source of organic detritus is biological production in surface waters of the oceans. I determine here an empirical relationship that predicts organic carbon flux at any depth in the oceans below the base of the euphotic zone as a function of the mean net primary production rate at the surface and depth-dependent consumption. Such a relationship aids in estimating rates of decay of organic matter in the water column, benthic and water column respiration of oxygen in the deep sea and burial of organic carbon in the sediment record.
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  • 44
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    Geochemical Society of Japan
    In:  Geochemical Journal, 14 (3). pp. 129-137.
    Publication Date: 2020-07-31
    Description: Nutrient profiles in Southwest Pacific interstitial solutions suggest that in environments of oxic pelagic sedimentation microbially mediated nitrification is recognizable as a two-step process. During the first step partially oxidized nitrogenous intermediaries accumulate in distinctive ammonia and nitrite maxima along with nitrate. During the second step nitrification continues and all intermediate species are fully oxidized to nitrate. Both steps occur within a zone that corresponds in thickness to the biologically active surface layer. Similarly, experimental nitrogen regeneration from decomposition of plankton in seawater (VON BRAND and RAKESTRAW, 1941: VON BRAND et al., 1942) suggests that each step corresponds to a distinct reaction in the microbially mediated transformation of N-org → NH3 → NO2 → NO3. The resolution of distinct reaction zones in pore water nutrient profiles possibly depends on the nature and mode of supply of the organic matter undergoing nitrification or reflects the spatial succession downcore of microbial populations capable of deamination, ammonium oxidation and nitrite oxidation, respectively. Finally, stoichiometric ratios of nutrients in the free water column - here demonstrated on published data from Saanich Inlet - reflect the same two steps of nitrification as delineated by the dissolved pore water species. Future pore water studies should include dissolved oxygen measurements as well as accurate ∑CO2, PO4 and nitrogenous species profiles, to verify and better quantify these separate steps in nitrification mechanism of oxic pelagic sediments.
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  • 45
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    Pergamon Press
    In:  Deep Sea Research Part A: Oceanographic Research Papers, 26A (Suppl. 1). pp. 217-224.
    Publication Date: 2020-08-04
    Description: During a multi-institutional air-sea interaction experiment (GATE) in the central Atlantic North Equatorial Countercurrent in September 1974, vector-averaging current meter (VACM) measurements were made within the 30-m thick mixed layer from three different types of surface moorings. The moorings consisted of a single-point taut-line flexible mooring (E3), a spar-buoy (El), and a 2-legged mooring (Fl). Although the kinetic energy density spectral estimates of the E3, El, and Fl records in the low frequency range were equivalent with 95% confidence, the mean progressive vector diagrams differed by 6 % in length and 4 in direction. At frequencies above 1 cph the variances of the 7.2 m Fl current vectors were about 1.5 times larger than the 7.6 m E3 data and the spectral levels of the 20 m El and 21.4 m E3 record were equivalent, suggesting that VACM current vectors recorded near the surface beneath a surface-following buoy do not contain detectable amounts of aliased high-frequency mooring motion.
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  • 46
    Publication Date: 2016-04-12
    Description: Large Neogene slumps have affected over 260,000 km2 of the outer continental margin and adjacent Cape Basin off southwestern Africa. Individual structures cover areas up to 68,700 km2 and proximally are commonly composed of huge rotated sediment blocks up to 450 m thick and several kilometers across. Seismic shocks, possibly in conjunction with lower-slope undercutting by bottom-current erosion, are suggested as possible trigger mechanisms for these features which are all thought to be post-Pliocene (possibly Pleistocene) in age. Older slumps are also recognized along the margin and four cycles of sedimentation/slumping are identified: early Upper Cretaceous (I); late Upper Cretaceous (II); Palaeogene (III); and Neogene (IV). In the main part of the Orange Basin depocentre (west of Childs Bank) the Cretaceous slump styles are thought to represent Mississippi delta-type down-slope sediment cascades (with reverse faulting and mud diapirism) over 1 km thick which resulted from very rapid dumping of terrigenous material from the Orange River. Cainozoic slumps show a different tectonic style and locus and this is thought to reflect a change in sedimentation patterns which resulted from lower terrigenous input onto the margin, higher biogenic/authigenic sedimentation, and slowed crustal subsidence. A connection possibly exists between low sea level stands and the Cainozoic episodes of slumping.
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  • 47
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    VCH Verl.-Ges.
    In:  Erdöl & Kohle, Erdgas, Petrochemie, 33 (10). pp. 457-463.
    Publication Date: 2020-07-31
    Description: The continental margins of southern Africa were formed by three tectonic styles: rifted, sheared, and vertical motion. Large Mesozoic-Cenozoic sedimentary accumulations occur on these margins, and their stratigraphy and lithofacies are summarized in relation to taphrogenic (mid-Jurassic to Albian) and epeirogenic (Upper Cretaceous to Cenozoic) basin development and contemporaneous continental separation between Africa and South America (commenced ca. 140 my BP). The most extensive potential hydrocarbon source rock/reservoir combinations are reckoned to be upper Jurassic-Albian anoxic sediments with interbedded sands on prograding delta fronts. A less likely possibility is thought to be organic-rich Oligo-Neogene sediments that have been involved in large-scale slumps along the west coast.
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  • 48
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    Schweizerbart
    In:  In: Die Fahrten des Forschungsschiffes Valdivia 1971 - 1978 : geowissenschaftliche Experimente / zusammengestellt von Wolfgang Schott. Geologisches Jahrbuch, Reihe D: Mineralogie, Petrographie, Geochemie, Lagerstättenkunde, 38 . Schweizerbart, Stuttgart, pp. 23-34.
    Publication Date: 2014-12-19
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    Institut für Meereskunde an der Universität Kiel
    In:  Institut für Meereskunde an der Universität Kiel, Kiel, 42 pp.
    Publication Date: 2015-05-29
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    Institut für Meereskunde an der Universität Kiel, Zoologische Abteilung
    In:  Institut für Meereskunde an der Universität Kiel, Zoologische Abteilung, Kiel, 3 pp.
    Publication Date: 2015-07-20
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    Institut für Meereskunde an der Universität Kiel
    In:  Institut für Meereskunde an der Universität Kiel, Kiel, 8 pp.
    Publication Date: 2015-07-20
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    Institut für Meereskunde an der Universität Kiel, Zoologische Abteilung
    In:  Institut für Meereskunde an der Universität Kiel, Zoologische Abteilung, Kiel, 3 pp.
    Publication Date: 2015-07-20
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    Institut für Meereskunde an der Universität Kiel
    In:  Institut für Meereskunde an der Universität Kiel, Kiel, 3 pp.
    Publication Date: 2015-07-20
    Description: Die 68. Reise des F.S. "Poseidon" fand zwischen dem 27. und dem 29. Oktober 1980 in der Kieler Bucht statt. Erprobungen mit dem elektromagnetischen Log wurden durchgeführt.
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  • 54
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    Institut für Geophysik der CAU
    In:  Institut für Geophysik der CAU, Kiel, Germany, 3 pp.
    Publication Date: 2020-02-13
    Description: 21. - 28. November 1980
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  • 55
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    IfM
    In:  IfM, Kiel, 5 pp.
    Publication Date: 2015-07-20
    Description: Arbeitsgebiet: Skagerrak - Ziel: Erprobung und Vergleich akustischer Auslösesysteme
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    Institut für Meereskunde an der Universität Kiel, Abteilung Regionale Ozeanographie
    In:  Institut für Meereskunde an der Universität Kiel, Abteilung Regionale Ozeanographie, Kiel, 15 pp.
    Publication Date: 2015-06-26
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  • 57
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    In:  UNSPECIFIED, Kiel, Germany, 2 pp.
    Publication Date: 2019-06-21
    Description: Erprobungsfahrt nach erfolgter Klasse, Überführung nach Kiel, 03.-04.07.1980
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  • 58
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    Springer
    In:  In: Fjord Oceanography. , ed. by Freeland, H. J., Farmer, D. M. and Levings, C. D. Springer, New York, pp. 299-304.
    Publication Date: 2016-01-12
    Description: M. Dunbar (1957) called attention to the existence of a small circular polynya about 50 m in diameter in Cambridge Fiord in northern Baffin Island for which there was no obvious explanation. Other small polynyas are known in arctic fjords which are usually the result of turbulent mixing in areas of strong currents (Sadler 1974), but Cambridge Fiord is 100 km long, its tidal range is small, and the polynya is situated within 300 m of the delta face at the head of the fjord so that strong turbulence is very unlikely. The annual reappearance of the polynya in late winter is confirmed by a series of aerial survey photographs taken by the Royal Canadian Air Force between 1952 and 1957 and also by reports from Inuit hunters from Pond Inlet. It is first seen within about two weeks of 15 March appearing in exactly the same position each year as a circle with a diameter of about 40 m. Over a period of about a week, a lead extends from the polynya to the shore and open water is visible in the tide crack for several hundred metres either side of the shore end of the lead. The lead, unlike the polynya, changes its position from year to year, but once formed it remains fixed until general break-up (Figure 1).
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  • 59
    Publication Date: 2015-03-03
    Description: Wer im geschichtsträchtigen Reichssaal des Alten Rathauses von Regensburg über das Meer nachdenken will, erlebt besonders eindringlich, wie schwer sich die Deutschen mit dem Meer tun. Der Kontinent stand immer im Mittelpunkt ihres Interesses.
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  • 60
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    Institut für Geophysik der Christian-Albrechts-Universität Kiel
    In:  Institut für Geophysik der Christian-Albrechts-Universität Kiel, Kiel, Germany, 7 pp.
    Publication Date: 2020-02-13
    Description: 1. 24.02.-05.03.1980 (Fahrtleiter: Dr. Theilen) 2. 05.03.-13.03.1980 (Fahrtleiter: Dr. Rumohr) 1. Allgemeines Die Reise in das Skagerrak vom 24.02. bis 05.03.1980 enthält die nachstehend aufgeführten Teilprogramme: a) Die Erfassung oberflächennaher Schichtstrukturen unter dem Meeresboden südlich des Oslo-Fjords sowie im zentralen und westlichen Teil des Skagerraks mit flachseismischen Verfahren. b) Bestimmung der Dämpfung seismischer Wellen und der seismischen Geschwindigkeiten aus Weitwinkelmessungen mit einem 400 Meter langen Streamer. Diese Messungen sollten auf besonderen Profilabschnitten erfolgen, die nach den kontinuierlichen reflexionsseismischen Messungen ausgewählt wurden. c) Magnetische Messungen zur Erfassung magnetischer Anomalien des kristallinen Untergrundes. d) Entnahme von Bodenproben zur Bestimmung der Feinschichtung des Meeresbodens. e) Untersuchungen mit der Multisonde zur Aufnahme der hydrographischen Situation und der Untersuchung der partikulären Substanzen. Gleichzeitig soll die räumliche und zeitliche Varianz der hydrographischen Situation erfaßt werden.
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  • 61
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    Geologisch-Paläontologisches Institut und Museum der Universität Kiel
    In:  Geologisch-Paläontologisches Institut und Museum der Universität Kiel, Kiel, 5 pp.
    Publication Date: 2015-07-20
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    Publication Date: 2015-07-20
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  • 63
    Publication Date: 2015-07-20
    Type: Report , NonPeerReviewed
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  • 64
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    Institut für Meereskunde an der Universität Kiel, Abt. Meeresphysik
    In:  Institut für Meereskunde an der Universität Kiel, Abt. Meeresphysik, Kiel, Germany, 2 pp.
    Publication Date: 2019-06-21
    Description: 1. Ziele a.) Meereszoologische Untersuchungen des Benthos im Kattegat und im Skagerrak (Meereszoologie) b.) Erprobung der Freifall-Profilsende (Meeresphysik) c.) Erprobung eines Multinetzes (Planktologie)
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  • 65
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    Geologisch-Paläontologisches Institut und Museum der Universität Kiel
    In:  Geologisch-Paläontologisches Institut und Museum der Universität Kiel, Kiel, 5 pp.
    Publication Date: 2015-10-14
    Description: 18.2.80 - 23.2.80 - Auf diesen Fahrten sollten geologisch-geophysikalische Untersuchungen in der Mecklenburger Bucht und in der Kieler Bucht (Vejsnäs Flak), im Zuge einer Zusammenarbeit zwischen den Geologischen und Geophysikalischen Instituten durchgeführt werden. Ziel der Arbeiten ist die Vertiefung unserer Kenntnisse über die Oberflächensedimentverteilung und deren Zusammenhang mit der Struktur des glazialen, flachgrundigen Untergrundes. Dabei wurden auf die akustischen Eigenschaften der Oberflächensedimente besonders Wert gelegt. In Erweiterung des kombinierten Meßsystems, das auf früheren Fahrten ("Poseidon 40" Planet 5/79) erprobt worden ist, wurden auf dieser Fahrt zusätzliche geophysikalische Geräte eingesetzt.
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  • 66
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    Geologisches Institut, CAU Kiel
    In:  Meyniana, 32 . pp. 1-5.
    Publication Date: 2015-03-03
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  • 67
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    Urban & Fischer
    In:  Zentralblatt für Bakteriologie: I. Abt. Originale C: Allgemeine, angewandte und ökologische Mikrobiologie, 1 (1). pp. 61-69.
    Publication Date: 2015-03-24
    Description: Enrichment cultures inoculated with fragments of the sponge Ircinia spec, under autotrophic culture conditions and with thiosulfate as sole electron donor yielded the predominant development of a small cell Chromatium strain, which is described herein as the new species Chromatium purpuratum. Autotrophically grown cells are 1.2–1.7 μm wide and 3–4 μm long. The cells are motile by means of one single polar flagellum. Intracytoplasmic membranes are present as vesicles as in the other Chromatium species. Multiplication occurs by binary fission. The photopigments are bacteriochlorophyll a and carotenoids of the okenone series. The G + C content of the type strain BN 5500 is 68.9 mole%. Chromatium purpuratum grows well photoautotrophically with sulfide or thiosulfate as electron donor. Photoheterotrophic growth is possible with various fatty acids serving as electron donor and carbon source. The new species is a marine isolate with an optimal salinity of 5% NaCl. It is compared with other known species of the genus Chromatium
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  • 68
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    Institut für Meereskunde an der Universität Kiel, Zoologische Abteilung
    In:  Institut für Meereskunde an der Universität Kiel, Zoologische Abteilung, Kiel, 3 pp.
    Publication Date: 2015-05-29
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  • 69
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    Institut für Meereskunde an der Universität Kiel
    In:  Institut für Meereskunde an der Universität Kiel, Kiel, 3 pp.
    Publication Date: 2015-05-29
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  • 70
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    Geologisch-Paläontologisches Institut und Museum der Univ. Kiel
    In:  Geologisch-Paläontologisches Institut und Museum der Univ. Kiel, Kiel, 9 pp.
    Publication Date: 2015-06-11
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  • 71
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    Balkema
    In:  In: Sahara and Surrounding Seas, Sediments and Climatic Changes. , ed. by Sarnthein, J., Seibold, E. and Rognon, P. Balkema, Rotterdam, pp. 21-30.
    Publication Date: 2015-02-26
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    Wiley
    In:  Wiley, New York, USA, 626 pp. 2nd revised edition
    Publication Date: 2013-05-17
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    Pergamon Press
    In:  Deep Sea Research Part A. Oceanographic Research Papers, 27 (9). pp. 671-691.
    Publication Date: 2016-10-14
    Description: The maximum counterillumination intensities of three species of mesopelagic squids and one species of mesopelagic fish were determined in a shipboard laboratory. The values were compared with the intensity of downwelling irradiance in the ocean measured off Oahu, Hawaii. The upper depth limits of the mesopelagic fauna were determined by mid-day and moonlit-night trawling. The data support the hypothesis that limits on concealment from predation through counterillumination determine the upper depth limits of this fauna during the day. At night near full moon, however, animals may be found at light levels higher than those at which counterillumination seems to be an effective strategy.
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  • 74
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    Wiley
    In:  Internationale Revue der gesamten Hydrobiologie und Hydrographie, 65 (6). pp. 835-848.
    Publication Date: 2017-05-31
    Description: Tubificid and enchytraeid oligochaetes are common members of the interstitial fauna of sandy beaches. Their abundance dynamics, life cycles and distribution patterns were investigated at two beaches on the western Baltic Sea and at a North Sea beach (Isle of Sylt). Populations of 115,000 ind./m2 were found at protected Baltic beaches. Reproduction of the tubificids, Phallodrilus monospermathecus and Spiridion insigne takes place within a well defined breeding period once a year. The market horizontal and vertical distribution patterns of various tubificid and enchytraeid species are elucidated by preference reactions to several physiographic parameters, such as oxygen and water content of the sediment, and salinity.
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  • 75
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    In:  Verhandlungen des naturwissenschaftlichen Vereins in Hamburg, NF23 . pp. 249-2554.
    Publication Date: 2016-05-17
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  • 76
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    Pergamon Press
    In:  Deep Sea Research Part A: Oceanographic Research Papers, 26 (Suppl. 1). pp. 1-8.
    Publication Date: 2020-08-04
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  • 77
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    In:  (Diploma thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 122 pp
    Publication Date: 2021-03-23
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  • 78
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    Institut für Meereskunde
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 075 . Institut für Meereskunde, Kiel, Germany, 137 pp.
    Publication Date: 2016-03-18
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  • 79
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    Institut für Meereskunde Kiel
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 077 (90). Institut für Meereskunde Kiel, Kiel, Germany, 73 pp.
    Publication Date: 2013-07-24
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  • 80
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    Pergamon Press
    In:  Deep Sea Research Part A: Oceanographic Research Papers, 26 (Suppl. 1). pp. 161-189.
    Publication Date: 2020-08-04
    Description: Horizontal velocity and temperature measurements observed from a two-dimensional array of moored instruments, mooring Fl, are analysed to describe the near-surface internal wave field in the GATE (GARP Atlantic Tropical Experiment) C-scale area. Spectral properties indicate strong deviations from the Garrett and Munk (1972, 1975) deep ocean internal wave models. The frequency spectrum in the upper pycnocline is dominated by three energetic bands centered at 0.0127 (inertial frequency), 0.08 (M2-tidal frequency) and 3 cph. The latter frequency band does not correspond to the local Brunt Väisälä frequency (〈 10 cph) and contains about one half of the total internal wave energy of fluctuations with periods less than 10 hours. Cross-spectral analysis of the high frequency internal waves yields corresponding wavelengths of order 1 km consistent with westward propagating first mode wave groups, if the effect of Doppler shift due to a strong mean current is taken into account
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  • 81
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    Institut für Meereskunde
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 078 . Institut für Meereskunde, Kiel, Germany, 107 pp.
    Publication Date: 2016-03-18
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  • 82
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    Institut für Meereskunde
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 079 . Institut für Meereskunde, Kiel, Germany, 128 pp.
    Publication Date: 2016-03-18
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  • 83
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    Pergamon Press
    In:  In: The Gas Situation in the ECE Region Around the Year 1990: proceedings of an International Symposium of the Committee on Gas of the Economic Commission for Europe, held in Evian, France. Pergamon Press, Oxford, pp. 327-342. ISBN 0-08-024465-3
    Publication Date: 2016-09-12
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  • 84
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    Danish Institut for Fisheries Research
    In:  Dana, 1 . pp. 39-51.
    Publication Date: 2020-07-30
    Description: In this paper a direct age determination method for squid is introduced. Periodical growth rings in statoliths of the squid Gonatus fabricii (Lichtenstein, 1818) are described. By comparison with the previously determined growth rate of juvenile specimens and a bimodal monthly size distribution, growth rings, called first-order bands, are for the first time shown to be daily whereas bands of second and third order are fortnightly and monthly, respectively. The relationship between the pen length and both statolith length and the number of growth rings are shown. Presence of organic material in statoliths and its significance for banding are demonstrated. Periodical growth rings are also shown in statoliths of Rossia glaucopis (Lovén, 1845) and Alloteuthis subulata (Lamarck, 1798).
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  • 85
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    In:  Initial Reports of The Deep Sea Drilling Project, 56/57 . pp. 569-613.
    Publication Date: 2016-10-10
    Description: All sites drilled on Leg 57 were logged as weather conditions permitted. The logging was done by the Singapore office of Schlumberger, and because of short notice the special logging tools required to pass through the Challenger drill pipe were not available. The standard centralizer, excentralizer, and caliper tools were not appropriate, and those modified aboard ship were not completely satisfactory. In addition, we suspected that vertical motion from the ship's heave degraded the quality of logs. Both the sonic and neutron density tools were operated beyond their normal working ranges. Despite these operational difficulties, the logs from different runs in a hole, both repeat sections and runs with different tools, show generally the same features. Over intervals of 5 to 10 meters the field logs seem to be good indicators of the physical character of the section penetrated (Carson and Bruns, this volume). The recovery of continuous core as well as logs differs from normal industrial drilling practice, in which a major purpose of logging is to establish lithology. Since lithology is best established by direct examination, the log analysis focused less on identifying a specific lithology than on continuous measurement of in situ physical properties, especially at Sites 438, 439, and 440, where recovery was good. However, the logs were used to establish the lithology of missing intervals, especially at Site 441, where recovery was poor. Lithology and physical properties aspects of the log analysis are covered in the individual site chapters and in a comparative analysis of laboratory measurements of physical properties and logged physical parameters (Carson and Bruns, this volume). In the present chapter we concentrate on log precision, correlation of key horizons in seismic records and core lithology, and on fracturing as indicated by the logs. We do this by using the results of a study of corrected logs and the derivative products from computer programs developed by the Scientific Software Corporation (SSC) and Technology Research Center and of corrected logs from Schlumberger (available from DSDP).
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  • 86
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    National Science Foundation
    In:  Initial Reports of The Deep Sea Drilling Project, 56/57 . pp. 473-488.
    Publication Date: 2020-07-29
    Description: Studies of convergent margin tectonics along the Japan Trench Transect are based on geophysical as well as on drill and conventional sampling data. The large number of geophysical and geological studies in the 1960's made this area an attractive target for convergent margin drill core sampling. Once the transect was scheduled for drilling by the Glomar Challenger, the earth science community in Japan intensified its efforts to collect geophysical and geological data within the transect area. Many of these data are published in Japanese and international journals. This chapter describes both the seismic reflection records along which Legs 56 and 57 drilling took place and the reflection records made after drilling. The seismic data are interpreted in light of the drilling results.
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  • 87
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    Pergamon Press
    In:  Deep Sea Research Part A: Oceanographic Research Papers, 27 (1). pp. 97-98.
    Publication Date: 2020-08-04
    Description: Letter to the Editor
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  • 88
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    AMS (American Meteorological Society)
    In:  Journal of Physical Oceanography, 10 (10). pp. 1686-1690.
    Publication Date: 2016-05-10
    Description: The temporal changes in the low-frequency thermal structure during a two-week period in August-September 1978 are discussed from moored data collected during the JASIN experiment. While some changes in the thermal structure appear to be related to local winds, the dominant low-frequency variability in the seasonal thermocline can be explained as horizontal advection of a spatially varying temperature field, and associated thermal wind, by geostrophic currents with little vertical motion or mixing required.
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  • 89
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    PalAss
    In:  Palaeontology, 23 (2). pp. 237-271.
    Publication Date: 2016-10-07
    Description: This paper describes the detailed skeletal anatomy of chasmopinid trilobites from the Ordovician of the Oslo region, and Phacops from the Polish Devonian. Lamination of the cuticle is similar to that previously reported, and the outermost prismatic layer has been conclusively proved. Several types of tubercles or pustules on the surface of the exoskeleton have been identified, for which a classification is proposed. Canals through the exoskeleton range from about 1-40 micro-m in diameter. In Chasmops spp. apparently smooth tubercles have a thin central canal through the outer zone changing downwards into a wide canal. This smooth tubercle organ shows some resemblance with the sensory campanular organ (mechanoreceptor) in Recent arthropods. Sections of the big composite tubercles or pustules in Phacops have revealed two sets of ducts, partly with different directions: (1) numerous close-set fine (4 micro-m) canals in a fan-like arrangement, and (2) diffuse ramifying branches or tubes with distal bundles of tubules, the blunt terminals of which are inserted into the lower surface of the outer zone of the exoskeleton. This internal tubules organ might possibly, in general features, be analogous with the much smaller campanular organ in the halteres in Diptera. Just below the prismatic layer there are numerous small (10-20 micro-m) subsphaeric cavities apparently connected with the epidermis by a single thin (1.5-2.0 micro-m) perpendicular canal, which are termed Osmolska cavity organs.There is a considerable variation in muscle-scar pattern. Some species have calluses on the inner surface corresponding to shallow pits on the outer surface. Similar pits and dark patches, and knobs or calluses on the inner surface of the exoskeleton, are scars or small apodemes of muscles leading from the dorsal exoskeleton to the presumed thin membrane representing the ventral body wall inside the marginal doublure.
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  • 90
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    National Science Foundation
    In:  Initial Reports of The Deep Sea Drilling Project, 56/57 . pp. 489-503.
    Publication Date: 2020-07-28
    Description: The evolution of Neogene and Quaternary sedimentation in the fore-arc region off northern Honshu is evaluated using multichannel and single-channel seismic records in conjunction with the drill holes of the Japan Trench Transect (DSDP/IPOD Legs 56-57). The outer forearc region, which consisted of older sedimentary rocks and some calc-alkaline volcanic rocks, was subaerially exposed and eroded during the Paleogene and part of the Neogene. The deep sea terrace (fore-arc basin) region subsided below sea level in the early Miocene; most rapid subsidence occurred during the early to middle Miocene. Submergence progressed seaward so that the last vestige of the Oyashio landmass, which is now under the upper trench slope, was below sea level in the latest Miocene. Sediment sources to the outer fore-arc basin changed progressively from lithic, predominantly nonvolcanic material derived from the uplifted landmass during the late Paleogene-early Neogene to volcanic, arc-derived sediment rich in volcanic glass, Plagioclase, and volcanic lithic fragments. The volcaniclastic sediment was probably derived both from Honshu to the west and Hokkaido to the northwest. In response to subsidence the sedimentary depocenters in the fore-arc basin migrated generally seaward through time; the greatest relative seaward migration occurred between the late Miocene and Pliocene. Thick sediment sequences accumulated in slope basins on the trench inner slope. Sediment from the arc moved seaward to spill over the slope via large channels. An abrupt change in morphology and patterns of sedimentation apparently took place in the late Pliocene, coincident with a peak in explosive volcanism recorded in the form of ash layers and increased glass contents in sediment. The deep sea terrace was uplifted several hundreds of meters and a major channel crossing the fore-arc region was tilted landward and filled. At about the same time the midslope terrace basin was created and began rapidly accumulating sediment. The older basins, lower on the trench inner slope, were destroyed, possibly by steep seaward tilting, or filled. Large slump masses were sloughed-off downslope to the trench. Little sediment now accumulates on the trench inner slope in the vicinity of the sites, and older strata crop out on the slope. The locus of deposition has shifted northward off Hokkaido where a large channel feeds sediment to the slope. Large slump masses now fill the trench and are being accreted, creating a "toe" to the slope in this region. The evolution of the fore-arc region off northern Honshu has not been steady state. Tectonic accretion has been discontinuous, and tectonic erosion of the continental margin edge may have occurred periodically. Slope basins have been both created and abruptly destroyed at different points on the trench inner slope. There appears to be little possibility of distinguishing most sediment "scraped off" the oceanic plate from hemipelagic sediment deposited in the fore-arc region of Japan.
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  • 91
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    National Science Foundation
    In:  Initial Reports of The Deep Sea Drilling Project, 56/57 . pp. 521-568.
    Publication Date: 2020-07-28
    Description: Diatomaceous mudstones at depth under the deep sea terrace and the trench inner slope off Japan have been variably affected by tectonic stress. Veins, healed fractures, and microfaults occur at all sites except the shallow Site 435 on the upper trench inner slope and Site 436 on the Pacific Plate. Veins, fractures, and faults occur in cores from below 620 meters (lower to middle Miocene) in the landward sites (438 and 439) on the deep sea terrace, and are probably related to normal faulting seen in seismic records. The depth to "consolidated" sediment and to the first occurrence of veins and healed fractures shallows progressively toward the trench. The intensity of deformation also appears to increase seaward. However, no sediments younger than upper Pliocene are deformed. Open fractures may exist in situ at Sites 434 and 441 at levels between about 150 and 500 meters sub-bottom. The Japan Transect sediments—in contrast to deposits in the zone of initial deformation at other convergent margins though highly deformed, are not highly overconsolidated. However, sediment at depth in the trench inner slope sites is overconsolidated relative to that at the same depth in the landward reference site. None of the deformed Japan margin sediments recovered at Legs 56 and 57 sites originated by accretion of oceanic plate material—also in contrast to sediments at some of the margins previously studied. We suggest that tectonic stress related to convergence has been communicated to the slope sediments on the trench inner slope, either continuously or periodically, causing rapid tectonic dewatering and inducing fracturing and faulting. If episodic, the latest of these deformational periods may have occurred during the late Pliocene. The faults and fractures are either rehealed by continued overburden pressure (sediment loading) or may remain open at shallower levels. Fracturing and dewatering of semiconsolidated sediment beneath an unconsolidated but impermeable mud veneer may cause overpressured zones at depths of 200 to 500 meters. These overpressured zones possibly locally reduce shear strength and cause downslope mass movement of sediment, even on low-angle slopes on the trench inner slope.
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  • 92
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    Wiley
    In:  Journal of Fish Biology, 17 (4). pp. 411-429.
    Publication Date: 2018-05-16
    Description: Methods for analysing fish stomach contents are listed and critically assessed with a view to their suitability for determining dietary importance—this term is defined. Difficulties in the application of these methods are discussed and, where appropriate, alternative approaches proposed. Modifications which have practical value are also considered. The necessity of linking measurements of dietary importance to stomach capacity is emphasized and the effects of differential digestion upon interpretation of stomach contents outlined. The best measure of dietary importance is proposed as one where both the amount and bulk of a food category are recorded.
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  • 93
    Publication Date: 2019-09-23
    Description: In two closely spaced moorings in the Kiel Bight, four different current meterstwo rotor current meters (Aanderaa and Vector averaging), an acoustic current meter (designed by Gytre), and a pendulum current meter (designed by Niskin) were moored for 22 days. The Vector averaging current meter (VACM) was used as reference instrument on one mooring with the floatation at 7 m depth. The floatation of the second mooring was at 5 m depth in the first 17 days of the experiment, but in 2.7 m depth in the last 5 days to make their mooring more effected by surface waves. The Niskin wing current meter was most effected by wave-induced mooring motion. The Gytre instrument showed the smallest surface-wave effects. The vector variances of this instrument in 7.4 m depth on the surface-wave effected mooring and those of the VACM in 10 m depth on the reference mooring were about equal.
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  • 94
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    Cushman Foundation for Foraminiferal Research
    In:  Journal of Foraminiferal Research, 10 (3). pp. 163-172.
    Publication Date: 2016-08-08
    Description: A study of benthonic foraminifera in 837 samples from the U Cenozoic deposits of 9 DSDP holes located in the middle bathyal zone of the S Atlantic, S Pacific and Indian Oceans revealed that the Oligocene and Quaternary assemblages consist of nearly all the same species. These species do not show any important morphological changes. This means that the Quaternary fauna developed not later than the Oligocene. Late Cenozoic benthonic foraminiferal assemblages contain, in total, more than 400 taxa; however, less than 5% of them can be used as stratigraphic guide fossils and even those with some reservations.
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  • 95
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    Taylor & Francis
    In:  Alcheringa: An Australasian Journal of Palaeontology, 4 (4). pp. 289-297.
    Publication Date: 2016-08-08
    Description: The distribution of benthic foraminifera in Miocene deposits of the continental margin of southeastern South America is compared with that in the Recent. The comparison indicates that Miocene zoogeographic boundaries were located in higher latitudes than at present, suggesting that the climate at that time was warmer than now. In the Pliocene, temperatures were lower than at present. This signifies that a considerable decrease in water temperature took place in the latest Miocene or at the Miocene/Pliocene boundary in the southwestern Atlantic. The main reason for this drop in temperature was the opening of the Drake Passage and the establishment of the Circumpolar Antarctic Current and a branch — the Malvin Current. The opening resulted from strong orogenic movements, in the latest Miocene, which created the main part of the Andes. Prior to the opening of the passage, the anticyclonic (counterclockwise) gyre of surface currents in the South Atlantic was much larger and warm Brazilian waters reached higher latitudes. The Austral Strait, connecting the Pacific and Atlantic Oceans, may have existed from the Cretaceous in the southern part of South America, but its location and character did not permit the establishment of the true Circumpolar Antarctic Current. The Austral Strait was closed simultaneously with the opening of the Drake Passage.
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  • 96
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    ITGE
    In:  Revista Espanola de Micropaleontologia, 12 (2). pp. 283-304.
    Publication Date: 2016-08-09
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  • 97
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    Elsevier
    In:  Journal of Volcanology and Geothermal Research, 7 (1-2). pp. 107-137.
    Publication Date: 2016-09-12
    Description: Glass separates from 115 ash layers derived from the Kamchatkan (DSDP Site 192; 34 layers), the eastern Aleutian (DSDP Site 183; 56 layers) and the Alaska Peninsula (DSDP Site 178; 25 layers) volcanic arcs have been analyzed for up to 28 elements. In addition, the abundance and diversity of associated mafic phenocrysts have been evaluated. The resulting data set has made possible an evaluation of the late Miocene to Recent changes in composition of ashes derived from North Pacific volcanic arcs and of the factors controlling the evolution of highly siliceous magmas. We find no evidence for a general transition from arc tholeiite to calc-alkalic magma parentage of ashes derived from the volcanic arcs during the last 10 m.y., but instead find 0.1- to 0.5-m.y. intervals during which particular types of volcanism are prevalent. Most convincing is the transition from arc tholeiite to calc-alkalic for ashes derived from Kamchatka during the last 0.8 m.y., a change believed to be associated with a landward shift in the site of magma generation. Considered together, ashes derived from North Pacific volcanic arcs have been becoming more siliceous during the last 1.5 m.y. and may be associated with accelerated subduction during the same time interval. Hydrous phenocrysts (e.g., biotite) are typically associated with low-silica deep-sea ashes, but not with terrestrial volcanic rocks of comparable silica contents, suggesting the important role of water in the evolution of siliceous magma. REE patterns and relative abundances of mafic phenocrysts demonstrate the importance of fractional crystallization in controlling the evolution of highly siliceous arc magmas. REE increase with increasing silica, but become less concentrated in ashes with SiO2 〉 64%. Eu anomalies increase throughout the SiO2 range. Initial fractionation is dominated by clinopyroxene and plagioclase with amphibole strongly influencing fractionation above 64% SiO2.
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  • 98
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    Wiley
    In:  Biological Journal of the Linnean Society, 14 (1). pp. 103-131.
    Publication Date: 2016-09-09
    Description: At the sub-Antarctic island of South Georgia 25 of the 29 breeding species are seabirds. Fifteen of these have recently been studied in some detail. By examining the timing of their breeding seasons and their diet and feeding ecology (especially feeding techniques and potential foraging ranges), the nature of their ecological isolating mechanisms, and in particular the way in which they partition the resources of the marine environment, are reviewed. Although breeding season adaptations occur (winter breeding in Wandering Albatross and King Penguin; out of phase breeding in two species-pairs of small petrels) these are less important than dillerences in food and feeding ecology. There is a fundamental distinction between the niche of pursuit-diving species (mainly penguins) and the remainder which are basically surface-feeders. The two abundant krill-eating penguins show clear differences in feeding zones. Three albatrosses and a petrel feed mainly on squid and there are differences in both the species and size of the prey of each. The remaining seabirds chiefly take krill (although the giant petrels are extensive scavengers and some smaller petrels specialize on copepods) and utilize different feeding methods and areas to do so. Various adaptations related to inshore and offshore feeding zones are discussed. Although most species possess a combination of ecological isolating mechanisms additional evidence for the particular importance of dietary differences is presented.
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  • 99
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    Northwest Atlantic Fisheries Organization
    In:  Journal of Northwest Atlantic Fishery Science (6). pp. 7-13.
    Publication Date: 2020-07-16
    Description: Precocious maturation of male and female I. illecebrosus , induced in the laboratory in about 50 days, was followed by mating and spawning and yielded jelly-like egg masses up to 1 m in diameter containing 100,000 eggs. Fully mature males contained several hundred spermatophores, generally more than were implanted in the mantle of a female. The jelly released by the nidamental glands appears to trigger sperm release from implanted spermatophores. More than one egg mass was produced by single females and eggs remained in the ovary when the females died after spawning. The egg masses were neutrally buoyant and tended to drift with the weak current present in the pool. Larvae hatched in 6-7 days after spawning at about 13 C with mantle length of 1.1 mm. Eight days after hatching (maximum survival time), they had a mantle length of 1.25 mm and were similar to, but younger than, specimens found in plankton collections in late winter. All stages in the life cycle of I. illecebrosus have now been characterized, and the available information is consistent with the hypothesis of a 1-year life cycle with spawning possibly occurring in February. Major gaps in knowledge at present are the spawning time and location. Identification of egg masses and larvae may be useful in determining the time of spawning but the capture of mated females may be the best indicator of spawning sites.
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  • 100
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    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 60 (01). p. 151.
    Publication Date: 2020-07-16
    Description: This is the first detailed analysis of cephalopod beaks from the stomach of a northern bottlenosed whale, Hyperoodon ampullatus (Forster, 1770). The digestive action of many predators barely affects the chitinous beaks of cephalopods and some cetaceans accumulate the beaks in considerable numbers in their stomachs. The present beaks are clean and unbroken. Identification of cephalopod beaks from stomachs of predators such as sperm whales (see Clarke, 1977), seals (Clarke & Trillmich, 1980) and albatrosses (Clarke, Croxall & Prince, 1980) throws considerable light on the biology and relative ecological importance of the species of cephalopods concerned as well as providing useful information on the diet of the predators.
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