| Автор | Jansen, J. H. F. |
| Автор | Van Iperen, J. M. |
| Дата выпуска | 1991 |
| dc.description | Accumulation rates of microfossil associations are independent of each other and, in addition to percentages, give indispensable information about the significance of micropaleontological data. Marine diatoms reveal that coastal upwelling in the Zaire fan region was strong during glacial stages and weaker during interglacial stages. Oceanic upwelling was intense in stages 6 and 2 and at the stage 5d–5c transition but not in stage 4. The Benguela Current did not penetrate into the Gulf of Guinea during the last 220,000 years. The PhFD index, based on the contribution of freshwater diatoms and phytoliths, is a measure of aridity in equatorial Africa. The production in the low‐salinity river plume was high in the most humid periods on land and low when the continent was arid. On the long term, nutrient supply of the Zaire River to the ocean was probably larger in humid than in arid periods. Periods of strong seasonal variability in river fluxes and coastal upwelling coincide with arid intervals, except in the very humid interval with strong seasonal contrasts 35,000–20,000 years B.P. |
| Формат | application.pdf |
| Копирайт | Copyright 1991 by the American Geophysical Union. |
| Тема | ATMOSPHERIC PROCESSES |
| Тема | Instruments and techniques |
| Тема | OCEANOGRAPHY: GENERAL |
| Тема | 4267 |
| Тема | GEOGRAPHIC LOCATION |
| Тема | Atlantic Ocean |
| Тема | Africa |
| Название | A 220,000‐Year Climatic Record for the East Equatorial Atlantic Ocean and Equatorial Africa: Evidence from Diatoms and Opal Phytoliths in the Zaire (Congo) Deep‐Sea Fan |
| Тип | article |
| DOI | 10.1029/91PA01631 |
| Electronic ISSN | 1944-9186 |
| Print ISSN | 0883-8305 |
| Журнал | Paleoceanography |
| Том | 6 |
| Первая страница | 573 |
| Последняя страница | 591 |
| Выпуск | 5 |
| Библиографическая ссылка | Abrantes, F., Diatom assemblages as upwelling indicators in surface sediments off Portugal, Mar. Geol, 85, 15–39, 1988. |
| Библиографическая ссылка | Baker, G., Fossil opal phytoliths, Micropaleontology, 6, 79–85, 1960. |
| Библиографическая ссылка | Bjørklund, K. R., J. H. F.Jansen, Radiolaria distribution in Middle and Late Quaternary sediments and palaeoceanography in the eastern Angola Basin, Neth. J. Sea Res., 17, 299–312, 1984. |
| Библиографическая ссылка | Blasco, D., M.Estrada, B. H.Jones, Short time variability of phytoplankton populations in upwelling regions ‐the xample of Northwest Africa, Coastal Upwelling, Coastal and Estuarine Ser., 1F. A.Richards, 339–347, AGU, Washington, D. C., 1981. |
| Библиографическая ссылка | Brockmann, C. H. R., Brackwasser Studien, Sep. Sehr. Ver. Naturk. Unterweser, 4, 1–71, 1914. |
| Библиографическая ссылка | Bukry, D., Opal phytoliths from the tropical eastern Pacific Ocean, Deep Sea Drilling Project Leg 54, Initial Rep. Deep Sea Drill. Proj., 54, 575–589, 1980. |
| Библиографическая ссылка | Cadée, G. C., Primary production and chlorophyll in the Zaire river, estuary and plume, Neth. J. Sea Res., 12, 368–381, 1978. |
| Библиографическая ссылка | Cadée, G. C., Particulate and dissolved organic carbon and chlorophyll a in the Zaire river, estuary and plume, Neth. J. Sea Res., 17, 426–440, 1984. |
| Библиографическая ссылка | Delaney, A. C., Audrey, C.Delaney, D. W.Parkin, J. J.Griffin, E. D.Goldberg, B. E. F.Reimann, Airborne dust collected at Barbados, Geochim. Cosmochim. Acta, 31, 885–909, 1967. |
| Библиографическая ссылка | De Ruiter, R.S.C., J. H. F.Jansen, Two Pleistocene silicoflagellate biohorizons from the Angola Basin (SE Atlantic), Mar. Micropaleontol, 9, 365–368, 1985. |
| Библиографическая ссылка | De Ruiter, R.S.C., J. H. F.Jansen, T.C.E.vanWeering, Middle and Late Quaternary silicoflagellates from the Angola Basin, Neth. J. Sea Res., 17, 293–298, 1984. |
| Библиографическая ссылка | Diester‐Haass, L., K.Heine, P.Rothe, H.Schrader, Late Quaternary history of continental climate and the Benguela Current off South West Africa, Palaeogeogr., Palaeoclimatol., Palaeoecol, 65, 81–91, 1988. |
| Библиографическая ссылка | Eisma, D., A. J.vanBennekom, The Zaire river and estuary and the Zaire outflow in the Atlantic Ocean, Neth. J. Sea Res., 12, 255–272, 1978. |
| Библиографическая ссылка | Emiliani, C., Pleistocene temperatures, J. Geol., 63, 538–578, 1955. |
| Библиографическая ссылка | Fenner, J., H. J.Schrader, H.Wienegk, Diatom phytoplankton studies in the Southern Pacific Ocean, composition and correlation to the Antarctic Convergence and its paleoecological significance, Initial Rep. Deep Sea Drill. Project, 35, 757–813, 1976. |
| Библиографическая ссылка | Folger, D. W., Wind transport of land‐derived mineral, biogenic, and industrial matter over the North Atlantic, Deep Sea Res., 17, 337–352, 1970. |
| Библиографическая ссылка | Gardner, J. V., L. H.Burckle, Upper Pleistocene Ethmodiscus Rex oozes from the eastern equatorial Atlantic, Micropaleontology, 21, 236–242, 1975. |
| Библиографическая ссылка | Gardner, J. V., J. D.Hays, Responses of sea‐surface temperature and circulation to global climatic change during the past 200,000 years in the eastern equatorial Atlantic Ocean, Mem. Geol. Soc. Am., 145, 221–246, 1976. |
| Библиографическая ссылка | Gasse, F., B.Stabell, J.vanIperen, E.Fourtanier, Freshwater diatom influx in the intertropical Atlantic: relationships with continental records from Africa, Quat. Res., 32, 229–243, 1989. |
| Библиографическая ссылка | Giresse, P., J. H. F.Jansen, G.Kouyoumontzakis, G.Moguedet, Les fonds du plateau continental congolais et le delta sous‐marin du fleuve Congo, Milieu marin et ressources halieutiques dela République Populaire du Congo, Trav. Doc. ORSTOM., 138A.Fontana, 13–45, 1981. |
| Библиографическая ссылка | Hasle, G. R., B. R.Mendiola, The fine structure of some Thalassionema and Thalassiothrix species, Phycologia, 6, 107–125, 1967. |
| Библиографическая ссылка | Heip, C., P.Engels, Comparing species diversity and evenness indices, J. Mar. Biol. Assoc. U. K., 54, 559–563, 1974. |
| Библиографическая ссылка | Hustedt, F., Untersuchungen über die Natur der Harmattantrübe, Deutsche Überseeische Meteorologische Berichte, Bremen, 1921. |
| Библиографическая ссылка | Jansen, J. H. F., Quaternary geology and oceanography of the Zaire deep‐sea fan and adjacent Atlantic, Neth. J. Sea Res., 17, 145–440, 1984. |
| Библиографическая ссылка | Jansen, J. H. F., Middle and Late Quaternary carbonate production and dissolution, and paleoceanography of the eastern Angola Basin, South Atlantic Ocean, South Atlantic PaleoceanographyK. J.Hsü, H. J.Weissert, 25–46, Cambridge University Press, New York, 1985. |
| Библиографическая ссылка | Jansen, J. H. F., Glacial‐interglacial oceanography of the southeastern Atlantic Ocean and the paleoclimate of west central Africa, Paysages quaternaires de l'Afrique centrale atlantiqueR.Lanfranchi, D.Schwartz, 110–123, Office de la Recherche Scientifique et Technique Outre‐Mer, Paris, 1990. |
| Библиографическая ссылка | Jansen, J. H. F., S. J.van derGaast, Accumulation and dissolution of opal in Quaternary sediments of the Zaire deep‐sea fan (NE Angola Basin), Mar. Geol., 83, 1–7, 1988. |
| Библиографическая ссылка | Jansen, J. H. F., T.C.E.vanWeering, R.Gieles, J.vanIperen, Middle and Late Quaternary oceanography and climatology of the Zaire‐Congo fan and adjacent eastern Angola Basin, Neth. J. Sea Res., 17, 201–249, 1984. |
| Библиографическая ссылка | Jansen, J. H. F., C.Alderliesten, C. M.Houston, A.F.M.deJong, K.van derBorg, J. M.vanIperen, Aridity in equatorial Africa during the last 225,000 years: a record of opal phytoliths/freshwater diatoms from the Zaire (Congo) deep‐sea fan (northeast Angola Basin), Radiocarbon, 31, 557–569, 1989. |
| Библиографическая ссылка | Kolbe, R. W., Fresh‐water diatoms from Atlantic deep‐sea sediments, Science, 126, 1053–1056, 1957. |
| Библиографическая ссылка | Kufferath, H., Algues et protistes de fleuve Congo dans le Bas‐Congo et de son estuaire, Première et Deuxième partie, Expédition Océanographique Belge dans les Eaux Côtières Africaines de l'Atlantique Sud (1948–1949), Résultats Scientifiques, Facs. 1, 5, 1–75, Institut Royal des Sciences Naturelles de Belgique, Bruxelles, Belgium, 1956. |
| Библиографическая ссылка | Margalef, R., Phytoplankton communities in upwelling areas. The example of NW Africa, Oecol aquatica, 3, 97–132, 1978. |
| Библиографическая ссылка | Martinson, D. G., N. G.Pisias, J. D.Hays, J.Imbrie, T. C.Moore, N. J.Shackleton, Age dating and the orbital theory of ice ages: development of a high‐resolution 0 to 300,000‐year chronostratigraphy, Quat. Res., 27, 1–29, 1987. |
| Библиографическая ссылка | Melia, M. B., The distribution and relationship between palynomorphs in aerosols and deep‐sea sediments off the coast of Northwest Africa, Mar. Geol., 58, 345–371, 1984. |
| Библиографическая ссылка | Mikkelsen, N., Diatoms in the Zaire deep‐sea fan and Pleistocene palaeoclimatic trends in the Angola Basin and west equatorial Africa, Neth. J. Sea Res., 17, 280–292, 1984. |
| Библиографическая ссылка | Mix, A. C., W. F.Ruddiman, A.McIntyre, Late Quaternary paleoceanography of the tropical Atlantic, 1: spatial variability of annual mean sea‐surface temperatures, 0–20,000 years B.P., Paleoceanography, 1, 43–66, 1986. |
| Библиографическая ссылка | Morley, J. J., J. D.Hays, Comparison of glacial and interglacial oceanographic conditions in the South Atlantic from variations in calcium carbonate and radiolarian distributions, Quat. Res., 12, 396–408, 1979. |
| Библиографическая ссылка | Nkounkou, R. R., J. L.Probst, Hydrology and geochemistry of the Congo River system, Mitt. Geol. Paläont. Inst. Univ. Hamburg, 64, 483–508, 1987. |
| Библиографическая ссылка | Olausson, E., Oxygen and carbon isotope analysis of a Late Quaternary core in the Zaire (Congo) fan, Net. J. Sea Res., 7, 276–279, 1984. |
| Библиографическая ссылка | Parmenter, C., D. W.Folger, Eolian biogenic detritus in deep sea sediments: a possible index of equatorial ice age aridity, Science, 185, 695–698, 1974. |
| Библиографическая ссылка | Pitcher, G. C., Sedimentary flux and the formation of resting spores of selected Chaetoceros species at two sites in the southern Benguela system, S. Afr. J. Mar. Sci, 4, 231–244, 1986. |
| Библиографическая ссылка | Platt, T., D. V.Suba Rao, Energy flow and species diversity in a marine phytoplankton bloom, Nature, 227, 1059–1060, 1970. |
| Библиографическая ссылка | Pokras, E. M., Diatom record of Late Quaternary climatic change in the eastern equatorial Atlantic and tropical Africa, Paleoceanography, 2, 273–286, 1987. |
| Библиографическая ссылка | Pokras, E. M., Source areas and transport mechanisms for freshwater and brackish‐water diatoms deposited in pelagic sediments of the equatorial Atlantic, Quat. Res., 35, 144–156, 1991. |
| Библиографическая ссылка | Pokras, E. M., A. C.Mix, Eolian evidence for spatial variability of Late Quaternary climates in tropical Africa, Quat. Res., 24, 137–149, 1985. |
| Библиографическая ссылка | Pokras, E. M., A. C.Mix, Earth's precession cycle and Quaternary climatic change in tropical Africa, Nature, 326, 486–487, 1987. |
| Библиографическая ссылка | Pokras, E. M., B.Molfino, Oceanographic control of diatom abundances and species distributions in surface sediments of the tropical and southeast Atlantic, Mar. Micropaleontology, 10, 165–188, 1986. |
| Библиографическая ссылка | Sancetta, C., Oceanography of the north Pacific during the last 18,000 years: Evidence from fossil diatoms, Mar. Micropaleontol., 4, 103–123, 1979. |
| Библиографическая ссылка | Sancetta, C., Diatoms as hydrographic tracers: Example from Bering Sea sediments, Science, 211, 279–281, 1981. |
| Библиографическая ссылка | Sancetta, C., Distribution of diatom species in surface sediments of the Bering and Okhotsk seas, Micropaleontology, 28, 221–257, 1982. |
| Библиографическая ссылка | Schrader, H. J., Proposal for a standardized method of cleaning diatom bearing deep‐sea and land‐exposed marine sediments, Nova Hedwigia Beih., 45, 403–409, 1974. |
| Библиографическая ссылка | Schrader, H. J., Handbook for Diatom Studies, Methods, Minimum Required Standards, Appendix 7, Geologisch Paläontologisches Institut und Museum der Universität Kiel, Kiel, Federal Republic of Germany, 1975. |
| Библиографическая ссылка | Schrader, H. J., R.Gersonde, Diatoms and silicoflagellates, Utrecht Micropaleontol. Bull., 17, 129–176, 1978. |
| Библиографическая ссылка | Schuette, G., H.Schrader, Diatom taphocoenoces in the coastal upwelling area off South West Africa, Mar. Micropaleontol., 6, 131–155, 1981a. |
| Библиографическая ссылка | Schuette, G., H.Schrader, Diatoms in surface sediments: A reflection of coastal upwelling, Coastal Upwelling, Coastal and Estuarine Ser., 1F. A.Richards, 372–380, AGU, Washington, D. C., 1981b. |
| Библиографическая ссылка | Shackleton, N. J., N. D.Opdyke, Oxygen‐isotope and paleomagnetic stratigraphy of equatorial Pacific core V28–238: oxygen isotope temperatures and ice volumes on a 105 year and 106 year scale, Quat. Res., 3, 39–55, 1973. |
| Библиографическая ссылка | Stabell, B., Variations of diatom flux in the eastern equatorial Atlantic during the last 400,000 years ("Meteor ”cores 13519 and 13521), Mar. Geol, 72, 305–323, 1986. |
| Библиографическая ссылка | Swift, E., The marine diatom Ethmodiscus rex: its morphology and occurrence in the plankton of the Sargasso Sea, J. Phycol., 9, 456–460, 1973. |
| Библиографическая ссылка | Van Bennekom, A. J., G. W.Berger, Hydrography and silica budget of the Angola Basin, Neth. J. Sea Res., 17, 149–200, 1984. |
| Библиографическая ссылка | Van Bennekom, A. J., G. W.Berger, W.Helder, R.T.P.deVries, Nutrient distribution in the Zaire estuary and river plume, Neth. J. Sea Res., 12, 296–323, 1978. |
| Библиографическая ссылка | Van Bennekom, A. J., J. H. F.Jansen, S. J.van derGaast, J. M.vanIperen, J.Pieters, Aluminium‐rich opal: an intermediate in the preservation of biogenic silica in the Zaire (Congo) deep‐sea fan, Deep Sea Res., 36, 173–190, 1989. |
| Библиографическая ссылка | Van der Gaast, S. J., J. H. F.Jansen, Mineralogy, opal, and manganese of Middle and Late Quaternary sediments of the Zaire (Congo) deep‐sea fan: origin and climatic variation, Neth. J. Sea Res., 17, 313–341, 1984. |
| Библиографическая ссылка | Van Iperen, J. M., T.C.E.vanWeering, J. H. F.Jansen, A. J.vanBennekom, Diatoms in surface sediments of the Zaire deep‐sea fan (SE Atlantic Ocean) and their relation to overlying water masses, Neth. J. Sea Res., 21, 203–217, 1987. |
| Библиографическая ссылка | Van Leeuwen, R.J.W., Sea‐floor distribution and Late Quaternary faunal patterns of planktonic and benthic foraminifers in the Angola Basin, Utrecht Micropaleontol Bull, 3824, 1–287, 1989. |
| Библиографическая ссылка | Van Weering, T.C.E., J.vanIperen, Fine‐grained sediments of the Zaire deep‐sea fan, southern Atlantic Ocean, Fine‐Grained Sediments: Deep Water Processes and Fades, Geol. Soc. Spec. Publ, 15D.A.V.Stow, D. J. W.Piper, 95–113, 1984. |
| Библиографическая ссылка | Wiseman, J. D. H., N. I.Hendey, The significance and diatom content of a deep‐sea floor sample from the neighbourhood of the greatest oceanic depth, Deep Sea Res., 1, 47–59, 1953. |
| Библиографическая ссылка | Zachariasse, W. J., R. R.Schmidt, R.J.W.vanLeeuwen, Distribution of Foraminifera and calcareous nannoplankton in Quaternary sediments of the eastern Angola Basin in response to climatic and oceanic fluctuations, Neth. J. Sea Res., 17, 250–275, 1984. |
