The biogeography of major diatom taxa in Southern Ocean sediments

Autor: Xavier Crosta, Oscar E Romero, Jean-Jacques Pichon, Leanne K. Armand

Publikováno v: Palaeogeography, Palaeoclimatology, Palaeoecology
Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 2005, 223 (1-2), pp.93-126. ⟨10.1016/j.palaeo.2005.02.015⟩

International audience; Diatoms from 228 Southern Ocean core-top sediment samples were examined to determine the geographic distributions of 32 major diatom species/taxa preserved in the sediments of three zonally-distinct regions; Sea Ice, Open Ocea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5eb5fca11039dbe6bbb7bb6e911878a8
https://doi.org/10.1016/j.palaeo.2005.02.015

Late Quaternary sea ice history in the Indian sector of the Southern Ocean as recorded by diatom assemblages

Autor: Jean Jacques Pichon, Arne Sturm, Leanne K. Armand, Xavier Crosta

Publikováno v: Marine Micropaleontology
Marine Micropaleontology, Elsevier, 2004, 50 (3-4), pp.209-223. ⟨10.1016/S0377-8398(03)00072-0⟩

International audience; A Modern Analog Technique (MAT 5 201/31) has been applied to fossil diatom assemblages to provide down-core estimates of February sea-surface temperatures (SSTs) and of sea ice duration over the past 220 000 years at 56 ‡40P

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3dc37a8af4e1b5bc7e2d13b72b18728
https://doi.org/10.1016/s0377-8398(03)00072-0

Enregistrements sédimentologiques des changements climatiques et océanographiques au nord-ouest de Kerguelen (océan Indien sud) pendant les dernières 620 000 années

Autor: Aïcha Gendron-Badou, François Fröhlich, Jean-Jacques Pichon

Publikováno v: Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science. 325:343-349

Resume La comparaison des teneurs en carbonates et en silice biogenique avec les paleotemperatures superficielles estimees par la flore siliceuse, d'une carotte sedimentaire situee au nord-ouest de Kerguelen (juste au sud du front subantarctique), es

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::145d5b0b11fe5c1dd4e842ae853ed608
https://doi.org/10.1016/s1251-8050(97)81382-1

Alkenones and alkenes in surface waters and sediments of the Southern Ocean: Implications for paleotemperature estimation in polar regions

Autor: Elisabeth L. Sikes, L G Robertson, John K. Volkman, Jean-Jacques Pichon

Publikováno v: Geochimica et Cosmochimica Acta. 61:1495-1505

The concentration of C37-C39 long-chain alkenones and alkenes were determined in surface water and surface sediment samples from the subpolar waters of the Southern Ocean. Distributions of these compounds were similar in both sample sets indicating l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0ec18ae263f42fe111d151ad8c7ab2a1
https://doi.org/10.1016/s0016-7037(97)00017-3

Surface water temperature changes in the high latitudes of the southern hemisphere over the Last Glacial-Interglacial Cycle

Autor: Monique Labracherie, Jean-Jacques Pichon, Jean Jouzel, Gilles Bareille, Laurent Labeyrie, Josette Duprat

Publikováno v: Paleoceanography
Paleoceanography, American Geophysical Union, 1992, 7 (3), pp.289-318. ⟨10.1029/92PA00709⟩
Paleoceanography, 1992, 7 (3), pp.289-318. ⟨10.1029/92PA00709⟩

International audience; A set of numerical equations is developed to estimate past sea surface temperatures (SST) from fossil Antarctic diatoms. These equations take into account both the biogeographic distribution and experimentally derived silica d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f2c3538ae51211ea5629d8a5f258daa
https://doi.org/10.1029/92pa00709