{
    "@context": "http://schema.org/",
    
      "@type": "Dataset",
    
    
    "url": "https://antcat.antarcticanz.govt.nz/geonetwork/srv/eng/catalog.search#/metadata/d5409f49-303f-4b69-b679-9455f3ed07a9",
    "includedInDataCatalog":{
      "@type":"DataCatalog",
      "url":"https://antcat.antarcticanz.govt.nz/geonetwork/srv/"
      
    },
    
    "inLanguage":"eng",
    
    "name": "GNSS Data collected at Priestley Glacier November 2018",

    
    
      "dateCreated": 
	  "2021-09-22T00:00:00",
	
      "datePublished": 
	  "2021-09-22T00:00:00",
	
      "thumbnailUrl": 
	  "https://antcat.antarcticanz.govt.nz:/geonetwork/srv/api/records/d5409f49-303f-4b69-b679-9455f3ed07a9/attachments/d5409f49-303f-4b69-b679-9455f3ed07a9.png",
	
    "description": "This is GNSS data of four stations covering the grounding zone of Priestley Glacier Antarctica.\n\nTidal modulation of ice streams and their adjacent ice shelves is a real-world experiment to understand ice-dynamic processes. We observe the dynamics of Priestley Glacier, Antarctica, using Terrestrial Radar Interferometry (TRI) and GNSS. Ocean tides are predominantly diurnal but horizontal GNSS displacements oscillate also semi-diurnally. The oscillations are strongest in the ice shelf and tidal signatures decay near-linearly in the TRI data over >10 km upstream of the grounding line. Tidal flexing is observed >6 km upstream of the grounding line including cm-scale uplift. Tidal grounding line migration is small and <40 % of the ice thickness. The frequency doubling of horizontal displacements relative to the ocean tides is consistent with variable ice-shelf buttressing demonstrated with a visco-elastic Maxwell model. Taken together, this supports previously hypothesized flexural ice softening in the grounding-zone through tides and offers new observational constraints for the role of ice rheology in ice-shelf buttressing.\n\nRelated Publication:\nDrews, R., Wild, C. T., Marsh, O. J., Rack, W., Ehlers, T. A., Neckel, N., & Helm, V. (2021). Grounding-zone flow variability of Priestley Glacier, Antarctica, in a diurnal tidal regime. Geophysical Research Letters, 48, e2021GL093853. https:\/\/doi.org\/10.1029\/2021GL093853\n\nGET DATA:\nhttps:\/\/doi.pangaea.de\/10.1594\/PANGAEA.936090",

    
    
    
    
      "identifier": {
        "@id": "https://doi.org/10.1594/PANGAEA.936090",
        "@type": "PropertyValue",
        "propertyID": "https://registry.identifiers.org/registry/doi",
        "value": "doi:10.1594/PANGAEA.936090",
        "url": "https://doi.org/10.1594/PANGAEA.936090"
      },
    


    
    "keywords":[
    "PRIESTLEY GLACIER","INSTALLATION","K050A","GLACIERS","TIDES","OCEANS","GLACIER MOTION\/ICE SHEET MOTION","Global Positioning System (GPS)","GPS","GNSS","ANTARCTICA"
    ]


    
    ,"creator": {
          
          
          "@type":"Person"
          
            ,"name": "Drews, Reinhard."
            ,"email":  "reinhard.drews@uni-tuebingen.de"

          
          ,"contactPoint": {
          "@type" : "PostalAddress"
          
          }
          }
        ,"publisher": {
          

          
          "@type":"Organization"
          
            ,"name": "PANGAEA"
            ,"email":  "info@pangaea.de"

          
          ,"contactPoint": {
          "@type" : "PostalAddress"
          
          }
          }
        

    
    
    ,"distribution": 
      {
      "@type":"DataDownload",
      "contentUrl": "https://doi.org/10.1594/PANGAEA.936090",
      "encodingFormat": "WWW:LINK-1.0-http--link",
      "name": "Distribution Metadata"
      
      }


    ,"spatialCoverage":
    
      {"@type": "Place",
      
      "geo": 
        {"@type": "GeoShape",
        "box": "-74.526 163.4182 -74.3934 163.458"
        }
      }
    

    ,"temporalCoverage": 
      "2018-11-01T00:00:00/2018-12-29T12:00:00"
      
      ,"license": 
          "https://creativecommons.org/licenses/by/4.0/"
        
    , "citation": "Drews, Reinhard., Wild, Christian T., Marsh, Oliver., Rack, Wolfgang., Ehlers, Todd A., Neckel, Niklas., Helm, Veit., ( 2021 ) GNSS Data collected at Priestley Glacier November 2018. PANGAEA. https://doi.org/10.1594/PANGAEA.936090, Accessed: 2026-07-28+12:00"

    }