Shelf sea extent rasters (SLW140 2019)

dataset

posted on 2022-07-12, 12:36 authored by Johannes De GroeveJohannes De Groeve, Buntarou KusumotoBuntarou Kusumoto, Erik Koene, W.D. KisslingW.D. Kissling, A.C. SeijmonsbergenA.C. Seijmonsbergen, Bert W. Hoeksema, Moriaki YasuharaMoriaki Yasuhara, Sietze Johannes Norder, Sri Yudawati Cahyarini, Alexandra van der GeerAlexandra van der Geer, Hanneke J. M. Meijer, Yasuhiro Kubota, Kenneth F Rijsdijk

DESCRIPTION:

Global paleoreconstruction of shelf sea extent for every 500 yr time period using the global bathymetric model (GEBCO 2019) 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.