Blar i forfatter "Skirbekk, Kari"

Viser treff 1-6 av 6

    • Benthic foraminifera as bio-indicators of chemical and physical stressors in Hammerfest harbor (Northern Norway) 

      Dijkstra, Noortje; Junttila, Juho; Skirbekk, Kari; Carroll, JoLynn; Husum, Katrine; Hald, Morten (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-01)
      We investigated benthic foraminiferal assemblages in contaminated sediments in a subarctic harbor of northern Norway to assess their utility as indicators of anthropogenic impacts. Sediments in the harbor are repositories for POPs and heavy metals supplied through discharges from industry and shipping activities. Sediment contaminant concentrations are at moderate to poor ecological quality ...

    • Benthic foraminiferal growth seasons implied from Mg/Ca-temperature correlations for three Arctic species 

      Skirbekk, Kari; Hald, Morten; Thomas Jr., Marchitto; Junttila, Juho; Klitgaard Kristensen, Dorthe; Sørensen, Steffen Aagaard (Peer reviewed; Journal article; Tidsskriftsartikkel, 2016-11-22)
      Core-top sediment samples from Kongsfjorden, Svalbard, and adjacent fjord and shelf areas were collected in order to investigate a potential relationship between Mg/Ca-ratios of Arctic benthic foraminifera and the ambient bottom water temperatures (BWT). The area is influenced by large seasonal variation in factors such as light and temperature, which is further strengthened by oceanographic shifts, ...

    • The impact of submarine copper mine tailing disposal from the 1970s on Repparfjorden, northern Norway 

      Sternal, Beata; Junttila, Juho; Skirbekk, Kari; Forwick, Matthias; Carroll, JoLynn; Pedersen, Kristine Bondo (Journal article; Tidsskriftartikkel, 2017-05-10)
      We investigate the state of sedimentological environment and contaminant status of Repparfjorden (N Norway) impacted by submarine disposal of mine tailings during the 1970s using sedimentological and geochemical properties of seventeen sediment cores. The impact of tailings disposal is mainly restricted to the inner fjord where the discharge occurred. Sediment cores retrieved from the inner fjord ...

    • The marine sedimentary environments of Kongsfjorden, Svalbard: an archive of polar environmental change 

      Husum, Katrine; Howe, John A; Baltzer, Agnes; Forwick, Matthias; Jensen, Maria; Jernas, Patrycja; Korsun, Sergei; Miettinen, Arto; Mohan, Rahul; Morigi, Caterina; Myhre, Per Inge; Prins, Maarten A.; Skirbekk, Kari; Sternal, Beata; Boos, Michel; Dijkstra, Noortje; Troelstra, Simon R. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-16)
      Kongsfjorden, a fjord in north-western Svalbard, is characterized by large environmental gradients driven by meltwater processes along the margins of tidewater glaciers and the inflow of relatively warm Atlantic Water, the main heat source for the European Arctic. These factors make Kongsfjorden a key area to investigate changes in the polar climate–ocean–glacier system and to examine the resulting ...

    • A multi-proxy approach for reconstructing oceanographic dynamics during the Holocene Development and Application of benthic foraminifera as proxies in the Polar North Atlantic 

      Skirbekk, Kari (Doctoral thesis; Doktorgradsavhandling, 2014-10-23)
      Two sediment cores and several sediment surface samples have been retrieved in order to develop and apply benthic foraminifera as proxies in the Polar North Atlantic. The purpose of the surface samples was to develop the Mg/Ca method for cold water environments, as this has been proven a valuable paleo-thermometer for several marine environments. This was done for three species of Benthic foraminifera: ...

    • Rekonstruksjon av paleomiljø i Kongsfjordrenna, vest for Svalbard, de siste ~11 800 år, basert på bentiske foraminiferer og sedimentologiske undersøkelser 

      Skirbekk, Kari (Master thesis; Mastergradsoppgave, 2007-11-15)
      Sedimentkjerne NP05-11-21GC fra Kongsfjordrenna vest for Spitsbergen er analysert for å kartlegge utviklingen av paleomiljø de siste ~11 800 år. Analysene er basert på undersøkelser av bentiske foraminiferer og sedimentologiske egenskaper. Kjernen er 5,15 meter lang og 104 prøver er analysert med hensyn på fauna, droppstein og kornfordeling. Sedimentenes fysiske egenskaper er målt ved hjelp av en ...