Selected glacier from the digital glacier dataset compiled and released in König et al. (2013).
Format
An object of class sf with POLYGON geometries
with 25 rows and 3 columns:
- name
Glacier name
- year
The year of glacier delineation
- length
Maximum glacier length from the glacier tongue to the head of the accumulation area
- fwidth
Average width of the glacier tongue
- geom
the geometry list column
Details
When the glaciers share the same name for a single year,
the polygons are combined into a MULTIPOLYGON.
In these cases, the maximum LENGTH and FWIDTH are taken
for the feature.
The two detached glaciers from Midtre Lovenbreen for the year 2007 where delineated originally in 2009. The year was changed to 2007 to keep congruent data.
References
König, M., Kohler J., and Nuth C. (2013). “Glacier Area Outlines - Svalbard 1936-2010.” Norwegian Polar Institute. https://doi.org/10.21334/npolar.2013.89f430f8.
König, M., Nuth, C., Kohler, J., Moholdt, G. and Pettersen, R. (2014). “A Digital Glacier Database for Svalbard.” Global Land Ice Measurements from Space, 229–39. Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-540-79818-7_10.
Examples
library(sf)
svalbard = st_read(system.file("extdata/svalbard.gpkg", package="post"))
#> Reading layer `svalbard_glaciers_subset' from data source
#> `/home/runner/work/_temp/Library/post/extdata/svalbard.gpkg'
#> using driver `GPKG'
#> Simple feature collection with 15 features and 4 fields
#> Geometry type: MULTIPOLYGON
#> Dimension: XY
#> Bounding box: xmin: 428910.1 ymin: 8754278 xmax: 440637.1 ymax: 8762561
#> Projected CRS: WGS 84 / UTM zone 33N