EFG M3.6 Hadal – current maps

M3. Deep sea floors biome

M3
valid
Published

June 7, 2024

This page provides information about the valid indicative distribution map for the ecosystem functional group M3.6 Hadal trenches and troughs. For older or alternative maps, see here.

Methods

Here is the methods summary for Map code and version: M3.6.web.orig v1.0.

Major occurrences of Hadal trenches and troughs was based on the ‘hadal’ and ‘trenches’ geomorphic units of Harris et al. (2014b). Occurrences were converted to 30 arc second spatial resolution.

Datasets

GSFM-2014 (Harris PT et al. 2014):

Source of topography and geomorphology. Resolution: variable (polygons), static. Accuracy evaluation: quantitative (subsets).

dataset url
GSFM-2014 http://www.bluehabitats.org/?page_id=9 :: https://www.grida.no/publications/112 :: https://www.dropbox.com/s/jvaprrz8snnzvfo/global%20seafloor%20geomorphic%20features%20map.zip?dl=0

Processing

Processing steps used in this map are: NA.

Map evaluation

This map is considered to be a Fine quality map based on the following characteristics:

Concept alignment is Direct,specific.

Ground observations are yes.

The accuracy evaluation Quantitative accuracy assessment,documented,quantitative.

How to use the data

Available files

Following maps are considered current and valid indicative distribution maps for this ecosystem functional group. Web navigation maps are optimised for use in webapps, but they have similar methods and differ only in details of format and processing.

  • Indicative Map (code: M3.6.IM.orig, version v1.0)
  • Web navigation (code: M3.6.web.orig, version v1.0)

You can download geospatial data for this map from the following sources:

M3.6.IM.orig (v1.0): Google Cloud bucket :: Zenodo repository (bundle of maps)

M3.6.web.orig (v1.0): Google Cloud bucket :: Zenodo repository (bundle of maps) :: Zenodo repository (EFG map) :: Mapbox tileset :: GitHub repository :: GitHub repository :: Earth Engine assets

Note that you need to login to some services like mapbox or earthengine, and in some cases you also need to request access to the files.

License information

Indicative maps have been released with a Creative Commons Attribution 4.0 International license.

Datasets used to create this map have similar licenses, but please check the license information below.

dataset license_info
GSFM-2014 https://creativecommons.org/licenses/by/4.0/

References

References used in this version of the maps.

  • Harris PT, Macmillan-Lawler M, Rupp J, Baker EK (2014) Geomorphology of the oceans. Marine Geology 352: 4-24. 10.1016/j.margeo.2014.01.011