Dataset title: GIS dataset of shallow closed depressions on the Nullarbor Plain, Australia - vector format (updated)

Creator
Name and surname: Matej Jelovčan
ORCID: 0009-0001-7228-1046
Institution: Karst Research Institute 
Address: Titov trg 2, SI-6230 Postojna
Contact e-mail: matej.jelovcan@zrc-sazu.si

Description: Polygon layer of mapped shallow closed karst depressions derived from digital surface model (DSM, TanDEM-X and TanDEM-X EDEM). Updated version excludes some non-carboante dominated areas providing an improved dataset.

Licence: CC-BY 4.0

Link to journal publication: TBD

Citation: Jelovčan, M., Lipar, M. & Stepišnik, U. (2026). GIS dataset of shallow closed depressions on the Nullarbor Plain, Australia - vector format. Zenodo. DOI: 10.5281/zenodo.18605526

Method: Semi-automatic depression detection from DSM, manual verification, GIS-based morphometric analysis.

Coordinate reference system: GDA2020 GA LCC

Attributes:
FID – feature identifier
ID – unique identifier
AREA_m2 – surface area (m2)
PERIM_m – perimeter (m)
CI – circularity index, formula C = 4πS/P^2; where C is the circularity index, S is the surface area, and P is the perimeter length
LENGTH_m – length (m)
WIDTH_m – width (m)
DEPTH_m – depth (m)
ORIENT_DEG – orientation (°), clockwise from north

List of data and files: 
-shallow_karst_depressions_nullarbor_updated.zip
-ReadMe.txt

