Svalbard tidewater glacier front database

Tidal glacier fronts in Svalbard are mapped using Landsat 8 orthorectified imagery. Fronts are determined for places where the ice is apparently in contact with seawater. This might not be 100% correct: there are some places where there may be sediment emerging, but if this can’t be seen clearly in the L8 image the glacier front is retained as being “in contact”, especially if it is only a short stretch.

Simple

Date (Revision)
2018-09-19
Credit

Jack Kohler
Credit

Max König
Credit

Chris Nuth
Credit

Glennda Villaflor
Status
Completed
Publisher
  Norwegian Polar Institute - Jack Kohler
Theme

  • shapefile

  • bad-utf8

  • terrestrial

  • remote-sensing

  • glaciology

  • marine

  • climate
Global Change Master Directory (GCMD) Keywords

  • CLIMATE INDICATORS | CRYOSPHERIC INDICATORS | GLACIAL MEASUREMENTS | GLACIER MASS BALANCE/ICE SHEET MASS BALANCE

  • CLIMATE INDICATORS | CRYOSPHERIC INDICATORS | GLACIAL MEASUREMENTS

  • CLIMATE INDICATORS | PALEOCLIMATE INDICATORS | LAND RECORDS | GLACIAL RETREAT

  • CRYOSPHERE | GLACIERS/ICE SHEETS | GLACIERS
Topic category
  • Climatology, meteorology, atmosphere
  • Environment
  • Geoscientific information
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Begin date
2015-01-01
End date
2015-12-31
Distribution format
OnLine resource
https://api.npolar.no/dataset/7cd67b1a-1b9b-4dfd-b7a1-f9469597ed4d ( WWW:DOWNLOAD-1.0-http--download )
Statement

Fronts are determined for places where the ice is apparently in contact with seawater. This might not be 100% correct: there are some places where it looks like there may be sediment emerging, but if I can't see it clearly in the L8 image I retain it as being "in contact", especially if it is only a short stretch.


I also cleaned up the glacier boundaries close to the fronts, and in a very few cases, further upglacier.


Then I have tidied up the shapefile attributes to include just the following (exemplified by the first glacier):


```

NAME: 'Pedašenkobreen'

IDENT: 11101

Geometry: 'Polygon'

X: [1×316 double]

Y: [1×316 double]

BoundingBox: [2×2 double]

NumLines: 316

TIDEWATER: 1

Comment: 'Fronts updated from SGD 2000-2010 (Nuth et al TC 2013) using 2015 L8 images.'

ANALYZED: 'June 2017'

ANALYST: '2000s: M. König, C. Nuth. 2015: G. Villaflor, J. Kohler'

SOURCE_200X: 'SPOT5HRS-IPY_SPIRIT_PROJECT (Korona et. al.,2009)'

SCENE_200X: 'SPI08-025-Svalbard'

SOURCE_2015: 'LANDSAT 8 orthorectified image'

SCENE_2015: 'LC82170032015252LGN00_B8'

GLIMSID: 'G021039E78743N'

xGLIMS: 631382.399872

yGLIMS: 8748098.834891

LENGTH_2015: 9822.8

LENGTH_200X: 9822.8

AREA_2015: 50520059

AREA_200X: 50864568

DATE_2015: '09-Sep-2015'

DATE_200X: 2008

FJORD_DEPTH: 8

DIST_2_FD: 468

```

AREA is calculated from the X and Y, I will add LENGTH in a later version when I have cleaned up the centerline data. I removed attributes which either weren’t needed or which also needed to be updated, like the DEM stuff. These can come in a later version, as separate files.
File identifier
7cd67b1a-1b9b-4dfd-b7a1-f9469597ed4d XML
Metadata language
English
Hierarchy level
Dataset
Date stamp
2022-05-27
Metadata standard name

CEOS IDN DIF
Metadata standard version

9.8.4
 
 

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Spatial extent

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Keywords

bad-utf8 climate glaciology marine remote-sensing shapefile terrestrial

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