Sökning: "Watershed transformation"

Hittade 3 avhandlingar innehållade orden Watershed transformation.

  1. 1. Landscape from space : geographical aspects on scale, regionalization and change detection

    Författare :Ola Hall; Risto Kalliola; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Regionalization; Scale; Change detection; Multiscale analysis; Objectspecific analysis; Watershed transformation; Landscape; Satellite data; Geography; Complex systems theory; Fuzzy set theory; Multicriteria-evaluation.; Human geography; Kulturgeografi; Human Geography; kulturgeografi;

    Sammanfattning : Landscapes are complex systems composed of multiscale hierarchically organized entities that interact within unique spatial and temporal scales. These interactions result in scaledependent spatial patterns that visually change depending upon the scale at which they are observed. LÄS MER

  3. 2. An inductive approach to the modeling of lake water quality in dimictic, glacial/boreal lakes

    Författare :Tomas K. E. Thierfelder; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Geovetenskap; Earth sciences; Geovetenskap; Sedimentology; sedimentologi;

    Sammanfattning : To explore the interaction between elements of the watershed and lake water quality, a database large enough to approximate the generic population of dimictic, glacial/boreal lakes is assembled and analyzed with multivariate statistical methods in an inductive top-down approach. Utilizing the analytical capabilities of geographical information systems, the spatially distributed characteristics of land cover, soil and bedrock elements are identified and parameterized with respect to element morphology and hydrology. LÄS MER

  4. 3. Mass balance of perfluoroalkyl acids in the Baltic Sea

    Författare :Marko Filipovic; Urs Berger; Michael McLachlan; Bert Ove Lund; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PFOA; PFOS; mass balance; Baltic Sea; PFOA; PFOS; massbalans; Östersjön; miljökemi; Environmental Chemistry;

    Sammanfattning : Perfluoroalkyl acids (PFAAs) are man-made chemicals. Their unique properties make them beneficial for a wide range of industrial and consumer applications, such as constituents in fire fighting foams, hydraulic oils and food packaging materials. LÄS MER