Sökning: "Paleoceanografi"

Hittade 4 uppsatser innehållade ordet Paleoceanografi.

  1. 1. Marine Geology and Holocene Paleoceanographyof the Southern Quark, Baltic Sea

    Master-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Anton Wagner; [2022]
    Nyckelord :Bottom currents; Sortable silt; Radiocarbon dating; Baltic Sea stages; Estuarine circulation; Marine sediment cores; Marine geophysical mapping;

    Sammanfattning : The Understen-Märket trench is located in the Southern Quark and is the only deep-water connection between the Baltic Propper and the Gulf of Bothnia. Bathymetric mapping reveals a number of eroded channels and drift deposits exists on the seafloor, indicating that the area is heavily affected by current activity. LÄS MER

  3. 2. Diatoms from the late Holocene of the western Chukchi Sea, Arctic Ocean: environmental signals and palaeoceanography

    Master-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Erik Browaldh; [2022]
    Nyckelord :diatoms; late holocene; SWERUS-L2-2-PC1; Herald Canyon; Chukchi Sea; ice-algae; sympagic; cryophilic; warm water diatom; Bering Sea Water species; bottom water temperature; BWT; benthic foraminifera; palaeothermometry; ice dynamics; Fragilariopsis; Fossula arctica; Paralia sulcata; Shionodiscus oestrupii; Thalassiosira simonsenii; Chaetoceros; Chaetoceros sp. 7;

    Sammanfattning : The sediment Core SWERUS-L2-2-PC1 (2PC) retrieved from the Chukchi Sea, Arctic Ocean sits in an oceanographically dynamic location at the Arctic-Pacific Ocean gateway. The 8.3 m-long core was retrieved in Herald Canyon at the marginal ice zone at 57 m depth. LÄS MER

  4. 3. Quaternary Arctic foraminiferal isotopes: species reliability and palaeoceanographic application

    Master-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Aron Varhelyi; [2018]
    Nyckelord :Palaeoceanography; Arctic; foraminifera; stable isotopes; Paleoceanografi; Arktis; foraminiferer; stabila isotoper;

    Sammanfattning : To investigate whether foraminiferal stable isotope (δ18O/δ13C) variations have potential as a chronostratigraphic tool in the Arctic Ocean, this thesis presents new δ18O/δ13C data from five marine sediment cores. Three of those are downcore analyses (PS92/54-1; TC/PC-03; PC-07) and the remaining two are core top analyses (PC-04; PC-08). LÄS MER

  5. 4. The paleoceanography of Kattegat during the last deglaciation from benthic foraminiferal stable isotopes

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Yasmin Bokhari Friberg; [2015]
    Nyckelord :δ13C; δ18O; Kattegat; Baltic Sea; stable isotopes; foraminifera; deglaciation; paleoceanography; Earth and Environmental Sciences;

    Sammanfattning : En borrkärna från Anholt (Kattegatt) togs upp under IODP-expedition 347 i Östersjön. Kärnan är daterad till ~18-14 ka BP och representerar deglaciationen i slutet av Weichselistiden. LÄS MER