European Ground Motion Service - Mosaic of Iceland

The Earth’s surface is in constant motion. Whether due to natural phenomena such as tectonic activity or volcanism, or because of human activities such as groundwater extraction or mining, the dynamism of the surface can have significant impacts on infrastructure and natural ecosystems. In recent years, increasing awareness of the potential risks related to ground motion has led to a demand for comprehensive and reliable information on these movements.

The European Ground Motion Service (EGMS) was created in response to user needs voiced at the Copernicus User Forum. This product represents the bleeding edge of space-based remote sensing technology, using Synthetic Aperture Radar Interferometry (InSAR) data derived from Sentinel-1 to detect and measure ground movements across Europe with milimetre precision. The product is updated annually and can be used for a variety of applications; city, regional, or state authorities can use it to monitor the structural integrities of dams, bridges, railways, and buildings. It allows urban planners to make data-driven decisions about where to build new infrastructure by assessing the likelihood of natural hazards such as landslides or subsidence. Researchers can also use EGMS data to study the impacts of climate change, such as thawing permafrost and coastal subsidence. More info here: https://land.copernicus.eu/en/products/european-ground-motion-service

https://sdi.eea.europa.eu/catalogue/srv/eng/catalog.search#/metadata/943e9cbb-f8ef-4378-966c-63eb761016a9

The EGMS Ortho exploits the information provided by ascending and descending orbits of the EGMS Calibrated to derive two further layers; one of purely vertical displacements (EGMS Ortho Vertical), the other of purely east-west displacements (EGMS Ortho East/West). Both layers are resampled to a 100 m grid, so that the final resolution is 100 by 100 m.

This dataset is processed from the Copernicus EGMS vector dataset resulting in a raster mosaic of the mean velocity of the ground in Iceland between 2018 and 2022 in mm/year in the up and down direction and the east west direction. It has been reprojected to EPSG:3057 from EPSG:3035.

Date (Publication): 2023-10-25

Edition: 2018-2022

Purpose: Monitoring ground movement in Iceland between 2018 and 2022

Status: Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Náttúrufræðistofnun		natt@natt.is	Point of contact
European Environmental Agency		copernicus@eea.europa.eu	Originator

Maintenance and update frequency: Annually

Theme

Place

Iceland
EGMS
Ground Motion
Ísland
jarðskorpuhreyfingar
Copernicus
Europe
InSAR
Sentinel 1
Landslide
Subsidence
Geological process

Access constraints: Copyright

Use constraints: Copyright

Other constraints: http://inspire.ec.europa.eu/metadata-codelist/LimitationsOnPublicAccess/noLimitations

https://land.copernicus.eu/en/data-policy

“Generated using European Union's Copernicus Land Monitoring Service information;

DOI (Ortho Vertical): https://doi.org/10.2909/943e9cbb-f8ef-4378-966c-63eb761016a9

DOI (Ortho East/West): https://doi.org/10.2909/fef95698-bcb5-4e68-9575-f7dbbf835dd7”

Spatial representation type: Grid

Language: eng

Character set: UTF8

Topic category

Elevation
Geoscientific information
Location

Begin date: 2018-01-01

End date: 2022-12-31

Reference system identifier: EPSG:3057

Number of dimensions: 3

Dimension name: Row

Dimension size: 6000

Resolution: 100 m

Dimension name: Column

Dimension size: 5000

Resolution: 100 m

Dimension name: Vertical

Dimension size: 1

Cell geometry: Area

Digital transfer options

OnLine resource

Protocol	Linkage	Name
OGC:WMS	https://gis.lmi.is/geoserver/wms?request=GetCapabilities&service=WMS	LMI_raster:U_EGMS_L3_2018_2022_1
OGC:WMS	https://gis.lmi.is/geoserver/wms?request=GetCapabilities&service=WMS	LMI_raster:E_EGMS_L3_2018_2022_1
FILE:RASTER	https://gis.lmi.is/geoserver/wcs?service=WCS&version=2.0.1&request=GetCoverage&CoverageId=E_EGMS_L3_2018_2022_1&format=image/tiff	E_EGMS_L3_2018_2022_1.tiff
FILE:RASTER	https://gis.lmi.is/geoserver/wcs?service=WCS&version=2.0.1&request=GetCoverage&CoverageId=U_EGMS_L3_2018_2022_1&format=image/tiff	U_EGMS_L3_2018_2022_1.tiff

Hierarchy level: Dataset

Statement: The Ortho product is based on the decomposition of the Calibrated product to provide two discrete geospatial layers containing purely vertical (the one described in this metadata) and purely east-west displacements resampled to a 100 m grid. In summary, the process involves the following tasks:

i*) identify all the cells with at least one measurement point per orbit,

ii*) average the time series per orbit,

iii*) interpolate ascending and descending time series to a common six-day sampling and

iv*) estimate the vertical and east-west components following equations weighted on the estimated accuracy of the input measurements.

v) mosaic of iceland from geotiff

vi) reproject to EPSG:3057 for icelandic users

*done by EEA and Copernicus