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Glaciated valleys in Europe and western Asia.

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  • معلومة اضافية
    • المصدر:
      Publisher: School of Earth Sciences and Geography, Kingston University Country of Publication: England NLM ID: 101595920 Publication Model: Print-Electronic Cited Medium: Print ISSN: 1744-5647 (Print) Linking ISSN: 17445647 NLM ISO Abbreviation: J Maps Subsets: PubMed not MEDLINE
    • بيانات النشر:
      Original Publication: Surrey, U.K. : School of Earth Sciences and Geography, Kingston University, 2005-
    • نبذة مختصرة :
      In recent years, remote sensing, morphometric analysis, and other computational concepts and tools have invigorated the field of geomorphological mapping. Automated interpretation of digital terrain data based on impartial rules holds substantial promise for large dataset processing and objective landscape classification. However, the geomorphological realm presents tremendous complexity and challenges in the translation of qualitative descriptions into geomorphometric semantics. Here, the simple, conventional distinction of V-shaped fluvial and U-shaped glacial valleys was analyzed quantitatively using multi-scale curvature and a novel morphometric variable termed Difference of Minimum Curvature (DMC). We used this automated terrain analysis approach to produce a raster map at a scale of 1:6,000,000 showing the distribution of glaciated valleys across Europe and western Asia. The data set has a cell size of 3 arc seconds and consists of more than 40 billion grid cells. Glaciated U-shaped valleys commonly associated with erosion by warm-based glaciers are abundant in the alpine regions of mid Europe and western Asia but also occur at the margins of mountain ice sheets in Scandinavia. The high-level correspondence with field mapping and the fully transferable semantics validate this approach for automated analysis of yet unexplored terrain around the globe and qualify for potential applications on other planetary bodies like Mars.
    • References:
      Nature. 2003 Dec 18;426(6968):797-802. (PMID: 14685228)
      Geomorphology (Amst). 2014 Mar 15;209(100):53-65. (PMID: 24748703)
    • Contributed Indexing:
      Keywords: Europe; automation; geomorphology; geomorphometry; glaciation; semantics
    • الموضوع:
      Date Created: 20160329 Latest Revision: 20201001
    • الموضوع:
      20250114
    • الرقم المعرف:
      PMC4786831
    • الرقم المعرف:
      10.1080/17445647.2014.921647
    • الرقم المعرف:
      27019665