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„Polarstern“ 1987/1988 the Expedition ANTARKTIS-VI of RV

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„Polarstern“ 1987/1988 the Expedition ANTARKTIS-VI of RV Die Expedition ANTARKTIS-VI mit FS „Polarstern“ 1987/1988 The Expedition ANTARKTIS-VI of RV “Polarstern” in 1987/1988 Herausgegeben von Dieter Karl Fütterer mit Beiträgen der Fahrtteilnehmer Ber. Polarforsch. 58 (1988) ISSN 0176-5027 - 3 - Inhalt Einführung .............................................................................................. 7 Introduction ............................................................................................. 9 1. Fahrtabschnitt ANT-VI/1 (Bremerhaven - Santander- Rio de Janeiro- Rio Grande do Sul 11 1.1 Zusammenfassung und Fahrtverlauf ............................................. 11 1.2 Ozonverteilung in der Stratosphäre ................................................. 12 2. Fahrtabschnitt ANT-VII/2 (Rio Grande do Sul - Ushuaia) (Fahrtleiter: D. Sahrhage) 15 2.1 Zusammenfassung und Fahrtverlauf ............................................. 15 2.2 Summary and itinerary ......................................................................... 25 2.3 Wetterablauf und Wetterberatung .................................................... 28 2.4 Geologische Untersuchungen an Land .................................... 30 2.4.1 Das Grundgebirge und Deckgebirge im Umkreis der Station Esperanza und Trinity Hut ............................................................ 30 2.4.2 Geologie einzelner Nunataker der Trinity Peninsula .......... 31 2.4.3 Geochronologische Korrelation der fossilführenden oberju­ rassischen Nordenskjoeld-Formation mit Zirkonen begleitender Tuffe (Longing Gap) ......................................................................... 31 2.4.4 Sonstige besuchte Aufschlüsse .................................................... 32 2.4.5 Hinterland von Faraday (Argentine Islands) ............................ 32 2.4.6 Süd Shetland Inseln beiderseits des Antarctic Sound und in der Elephant Island Group ............................................................. 32 2.5 Physiogeographlsche, geomorphologlsche und pedologische Untersuchungen ............................................................................... 34 2.5.1 Periglaziale und perimarine Reliefentwicklung ...................... 34 2.5.2 Daten zur Modellierung der kryogenen Hangentwicklung ..... 38 2.5.3 Physikalische und chemische Verwitterung sowie kryogene Bodenbildung ..................................................................................... 38 2.6 Holocene glacial history and climate variation on the Antarctic Peninsula ..................................................................................................... 40 2.7 Biologische Forschungen auf See ........................................................ 41 2.7.1 Ozeanographie ............................................................................................ 41 2.7.2 Krilluntersuchungen .................................................................................... 43 2.7.3 Pelagische Ostracoden .............................................................................. 45 2.7.4 Fischereibiologische Untersuchungen an den Fischbeständen um Elephant Island .................................................................................... 45 2.7.5 Der Nährstoffstatus planktischer Algen ................................................ 48 2.7.6 Antarktisches Benthos ............................................................................... 50 2.7.7 Verbreitung und Biologie benthlscher Amphlpoden ...................... 51 2.7.8 Nematoden der Meiofauna ........................................................................ 52 2.8 Marine Geologie ............................................................................................ 53 2.8.1 Sedimentprobennahme .............................................................................. 53 2.8.2 Beschreibung und Beprobung der Schwerelotkerne ..................... 54 2.8.3 Verbreitung benthischer Foraminiferen ................................................ 55 2.8.4 Adsorption und Partikelfluß In der Wassersäule .............................. 56 - 4 - 2.9 Marin-geophysikalische Untersuchungen ............................................ 5 8 2..9.1 Der zeitliche Ablauf der Messungen ....................................................... 5 8 2.9.2 Vorläufige Ergebnisse ................................................................................ 61 2.9.3 Ausblick ........................................................................................................... 67 2.10 Untersuchung niedermolekularer, halogenierter Kohlenwasser­ stoffe in Luft und Meerwasser ................................................................. 67 2.11 Stationsliste/Station List ............................................................................. 69 3. Fahrtabschnitt ANT-VI/3 (Ushuaia - Kapstadt) (Fahrtleiter : D.K. Fütterer) 79 3.1 Zusammenfassung und Fahrtverlauf .................................................... 79 3.2 Wetterablauf und Tätigkeit der Bordwetterwarte .............................. 91 3.3 Zoobenthos auf dem antarktischen Schelf ......................................... 93 3.3.1 Benthos-Probennahme und erste Ergebnisse ................................. 94 3.3.2 Direktbeobachtungen an benthischen Besiedlungs­ strukturen 1 00 3.3.3 Lebendhälterung im Laborcontainer ..................................................... 105 3.4 Marin-geowissenschaftliche Arbeiten ................................................... 107 3.4.1 Probennahme und Geräte .................................... 107 3.4.2 Süd-Orkney-Block ........................................................................................ 109 3.4.3 Queen Maud Rise ........................................................................................ 112 3 .4.4 Alfred-Wegener- Canyon ........................................................................... 115 3.4.5 "Deutschland Canyon" ............................................................................... 118 3.4.6 Filchner Rinne ............................................................................................... 120 3.4.7 Antarktische Konvergenz - Agulhas Becken ...................................... 123 3.4.8 Frühdiagenese von Silikaten im Weddellmeer .................................. 124 3.4.9 Niederfrequente Sedimentechographie ............................................... 130 3.4.10 Positionsbestimmung mit INDAS und GPS ........................................ 131 3.4.11 Bathymetrische Vermessung mit dem Fächersonar SEABEAM und dem Schelfrandecholot NBS ................................. 132 3.4.11.1 Geostatistische Verfahren im SEABEAM-post-processing 133 3.4.12 Seegravimetrie und marine Magnetik ................................................ 139 3.4.13 Verankerungsarbeiten und Sedimentfallen ....................................... 142 3.5 Das Sommerprogramm auf der Georg-von-Neumayer- Station ........................................................................................................... 148 3.5.1 Reflexionsseismische Untersuchungen auf dem Ekström- Schelfeis ....................................................................................................... 1 48 3.5.2 Glazialgeodätische Arbeiten auf dem Ekström-Schelfeis 152 3.5.3 Anorganische Spurenstoffe in Luft-und Schneeproben 158 3.5.4 Das Geophysikalische Observatorium ................................................. 1 59 3.5.5 Untersuchungen atmosphärischer Aitkenpartikel an der Georg-von-Neumayer-Station ................................................................ 1 62 3.5.6 Hydrophonaufnahmen vom Lautton der Weddellrobben in der Atka-Bucht ............................................................................................ 163 3.5.7 Bestandszählungen an den Kaiserpinguinkolonien in der Atka-Bucht ................................................................................................... 164 3.6 Die geowlssenschaftliche Expedition in die Kottasberge/ Heimefrontfjella und die KraulbergeA/estfjella ............................... 165 3.6.1 Anliegen und Ziele der Expedition ....................................................... 165 3.6.2 The Swedish participation in the expedition ................................... 167 - 5 - 3.6.3 Logistic experiences ................................................................................. 168 3.6.4 Strukturgeologische Untersuchungen an mylonitischen Gesteinen in den Kottasbergen und Sivorgfjella ......................... 1 71 3.6.5 Erzpetrographische Untersuchungen ................................................. 173 3.6.6 Sedimentology, stratigraphy and paleomagnetism in the Heimefrontfjella Range ........................................................................... 1 74 3.6.7 Fazielle Untersuchungen in den jungpaläozoischen Sedimenten der Heimefrontfjella und der Kraulberge ............... 1 80 3.6.8 Glazialmorphologische Untersuchungen ........................................... 183 3.6.9 Glaciological and geomorphological studies of Scharffen- bergbotnen .................................................................................................. 1 86 3.6.10 Radio-Echo soundings between Basen and Fossilryggen 193 3.6.11 Literatur.......................................................................................................... 194 3.7 Geologische Expedition in die Shackleton Range (GEISHA). 196 3.7.1 Einführung in die Geologie der Shackleton Range und Zielsetzung von GEISHA .......................................................................
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