Shelf sea extent rasters (SLW140 2021)

DESCRIPTION:  



Global paleoreconstruction of shelf sea extent for every 500 yr time period using the global bathymetric model (GEBCO 2021) and a state-of-the-art global spatiotemporal sea level curve. The global sea level curve was generated using the software SELEN4 (10.5281/zenodo.3520451) and raster DEMSRE3a (10.5281/zenodo.1637816). 



MAPPED CATEGORIES:  



0 = > 0 m BPSL (Below Past Sea Level) 

1 = Between 0 and -140 m BPSL  



MAPPED NA VALUES:  



No Data = < -140 m BPSL  



SPATIAL RESOLUTION:  



The spatial resolution of the dataset is a factor 8 of the original GEBCO.  



TEMPORAL RESOLUTION:  



A reconstruction is made for every 500 years from 0 BP to 26000 BP.  



The dataset is provided in two formats:  



1. TILED IN ASCII (SLW_tiles.zip):  



53 tiles of 10x10 degrees per folder each representing shallow water for a 500 yr time period.  



Directory naming: 

structure: //SLW..asc 

example: 10/010-020/SLW.005.asc 

description: Tile with shelf sea extent from 0 to 10 degrees latitude, and 10 to 20 degrees longitude, for 500 yr BP.  



2. MOSAIC IN TIF (SLW_mosaic.zip):  



53 global maps each presenting shallow water for a 500 yr time period.  



File naming: 

structure: SLW.tif 

example: SLW005.tif 

description: Global shelf sea extent map for 500 yr BP.