ÍslandsDEM v1.0 10m¶

Since 2015, elevation data from the Arctic (north of 60°N, including Iceland) started to be openly available through the ArcticDEM project, led by the Polar Geospatial Center, University of Minnesota (https://www.pgc.umn.edu/data/arcticdem/).

This data consists of a large amount of Digital Elevation Models (DEMs) repeatedly acquired (multitemporal), typically from 2012-present, and the oldest data reaching back to 2008. The DEMs are derived from satellite sub-meter stereo imagery, particularly from WorldView 1-3 and GeoEye-1. The processing of the DEMs was done using SETSM, an open-source digital photogrammetric software, in the Bluewaters supercomputer (University of Ilinois). Each DEM has 2x2m resolution and a footprint of ~18x100km.

In a collaborative effort between the National Land Survey of Iceland, the Icelandic Meteorological Office and the Polar Geospatial Center, we developed methods to handle and process a large amount of data available for Iceland. The methods developed consisted of

Spatial adjustment of all the available DEMs, for homogeneity and consistency in the location of each individual DEM.
Robust mosaicking into one single DEM of Iceland, by taking advantage of the multi-temporal coverage of DEMs. Each pixel of the mosaic corresponds to a median elevation value from the possible elevations available from the ArcticDEM. More details on the dataset available here. This DEM is resampled for 10x10m resolution.

iceland_dem

Earth Engine Snippet¶

var DEM_10m_isn93 = ee.Image("projects/ee-landmaelingar/assets/IslandsDEMv1_10m_isn93")

Projection used: EPSG 3057 (ISN93/Lambert 1993)

Sample Code: https://code.earthengine.google.com/34517ab5c05be78e5f7d9227a4ca7b7e

License¶

The datasets are distributed under a Attribution 4.0 International (CC BY 4.0) license.

Produced by : National Land Survey of Iceland & PGC

Curated in GEE by : National Land Survey of Iceland

Keywords: : Elevation, DEM, ArticDEM, Iceland, Geophysical

Last updated on GEE: 2022-03-29