Sökning: "bulk sediment"

Visar resultat 21 - 24 av 24 avhandlingar innehållade orden bulk sediment.

  1. 21. Investigations of temporal changes in climate and the geomagnetic field via high-resolution radiocarbon dating

    Författare :Anette Mellström; Kvartärgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; wiggle-matching; Radiocarbon dating; 14C; 2800 cal BP; climate change; solar activity; palaeomagnetism; lake sediments; varves; post-depositional remanent magnetisation; PDRM; lock-in; peat deposits; Sweden;

    Sammanfattning : Geological archives have shown periods of abrupt climate change in the relatively stable Holocene epoch (last ca. 11 700 years). One of these periods was around 2800 cal BP. Several records, mainly from Europe, reveal a shift towards wetter, cooler and windier conditions. LÄS MER

  3. 22. Suspended solids and indicator bacteria in stormwater runoff : Sources of bias in field measurements

    Författare :Helen Galfi; David Stransky; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VA-teknik; Urban Water Engineering;

    Sammanfattning : Stormwater quality monitoring and control is a prerequisite for sustainable water resources management in urban areas. Stormwater monitoring programs are based on general water sampling guidance and, in the absence of standard procedures, employ various sampling and analytical methods. LÄS MER

  4. 23. Benthic invertebrate food webs in the Baltic Sea : Anthropogenic pressure effects and methodological advancements

    Författare :Julie Garrison; Francisco Nascimento; Ángel Borja; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; food web; trophic network; detritivore; Baltic Sea; macrofauna; marinbiologi; Marine Biology;

    Sammanfattning : Trophic interactions are ecologically important, as they structure communities, and globally important for the ecosystem functions that they facilitate. Anthropogenic pressures are altering the structure of food webs, their stability, and resilience to change. LÄS MER

  5. 24. Characterization of Pathfinders and Indicators of Gold

    Författare :Gabriel Kofi Nzulu; Martin Magnuson; Per Eklund; Hans Högberg; Farid Akhtar; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Pathfinder; Indicator; Gold; Hydrothermal; X-ray; Diffraction; Kubi; Ghana;

    Sammanfattning : Research on natural minerals and their chemical bonding to economically critical raw materials is a viable industrially relevant research area due to its increasing demand. Meeting demands requires fast, robust, and efficient techniques to explore new ore deposits and continuous operation of active mines as well as recycling. LÄS MER