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  SAR4Tectonics (S4T)

The SAR4Tectonics project aims to provide open-access, global measurements of ground deformation in high-strain areas near tectonic plate boundaries. By leveraging the capabilities of the Persistent and Distributed Scatterer (PS/DS) technique with Sentinel-1 SAR images, the project seeks to deliver comprehensive and accurate data on ground deformation, which is crucial for understanding geological processes, assessing seismic risks in these regions, and advance our understanding of Earth's dynamic processes in general. The PS/DS technique offers significantly denser spatial coverage than GNSS, enabling the detection of more localized deformation signals. For the first time, such a vast and detailed dataset is made publicly available. By making this data openly accessible, the SAR4Tectonics project hopes to reduce the burden of SAR data processing for geoscientists, facilitating future studies.The project involved processing 6.5 years of SAR data, focusing on areas where the second invariant of strain exceeds 3 nanostrain per year. Various error corrections were employed, including tropospheric delay correction using ECMWF reanalysis data, ionospheric mitigation via CODE total electron content maps, and solid earth tide modeling. Additionally, the impact of vegetation and soil moisture on distributed scatterers was minimized through a full covariance matrix (phase linking) approach, and the results were calibrated using GNSS data. The final dataset includes line-of-sight average velocity maps, deformation time series, projection vectors, and reference plate modeled velocities.
 
Citation proposal
German Aerospace Center (DLR). SAR4Tectonics (S4T). https://gdk.gdi-de.org/geonetwork/srv/api/records/6b3b599e-b334-458d-beea-b43a7588b0ae
 
  • Identification
  • Distribution
  • Quality
  • Spatial rep.
  • Ref. system
  • Content
  • Portrayal
  • Metadata
  • Md. constraints
  • Md. maintenance
  • Schema info

Identification

Data identification

Citation

Date ( Creation )
2025-06-02T00:00:00
Edition
Identifier
https://geoservice.dlr.de/catalogue/srv/metadata/6b3b599e-b334-458d-beea-b43a7588b0ae
Presentation form
Digital map
Other citation details
DOI: TBD
Status
Completed

  Author

German Aerospace Center (DLR) -  

  Point of contact

German Aerospace Center (DLR)  

Maintenance and update frequency
As needed
Keywords
  • DLR
  • EOC
  • Land
  • SAR4Tectonics
  • ground deformation
  • high-strain areas
  • tectonic plate boundaries
  • PS/DS
  • InSAR
  • seismic risk assessment
  • Sentinel-1
  • opendata
GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Geology
  • Natural risk zones
Spatial scope ( Place )
  • Global
Use limitation
Nutzungseinschränkungen: Das DLR ist nicht haftbar für Schäden, die sich aus der Nutzung ergeben. / Use Limitations: DLR not liable for damage resulting from use.
Use limitation
Nutzungsbedingungen: License, https://creativecommons.org/licenses/by/4.0/

Legal constraints

Access constraints
Other restrictions
Other constraints
License

Legal constraints

Use constraints
License
Use constraints
Other restrictions
Other constraints
Nutzungsbedingungen: License, https://creativecommons.org/licenses/by/4.0/
Other constraints

{"id": "cc-by/4.0",

"name": "Creative Commons Namensnennung – 4.0 International (CC BY 4.0)",

"url": "http://dcat-ap.de/def/licenses/cc-by/4.0",

"quelle": "Copyright DLR (year of production)"}

Spatial representation type
Grid
Denominator
200000
Metadata language
eng
Character set
UTF8
Topic category
  • Geoscientific information

Extent

N
S
E
W


 

Distribution

Distribution

Distribution format
  • ()

Digital transfer options

OnLine resource
EOC Download Service  

EOC Download Service

OnLine resource
EOC STAC Collection  

EOC STAC Collection

OnLine resource
EOC STAC Collection  

EOC STAC Collection

OnLine resource
https://geoservice.dlr.de/eoc/land/wms?SERVICE=WMS&REQUEST=GetCapabilities  
OnLine resource
EOC Geoservice Dataset  

EOC Geoservice Dataset

OnLine resource
SAR4TEC_EURASIA_EAST_ASCE  

S4T Eurasia (EURA) - Ascending

OnLine resource
SAR4TEC_EURASIA_EAST_DESC  

S4T Eurasia (EURA) - Descending

 

Quality

Data quality

Hierarchy level
Dataset

Domain consistency

Measure identification
INSPIRE / Conformity_001

Conformance result

Citation

Date ( Publication )
2010-12-08
Explanation
See the referenced specification.
Pass
true

Lineage

Statement
The SAR4Tectonics dataset is based on Copernicus Sentinel-1 SAR images and Digital Elevation Model, ECMWF reanalysis data, CODE total electron content maps, solid earth tide modeling, and GNSS deformation measurements.
Description
The dataset was processed using the IWAP processor, employing the PS/DS and phase linking techniques, also using ECMWF reanalysis data, CODE total electron content maps, and solid earth tide modeling.The authors gratefully acknowledge the computational and data resources provided through the joint high-performance data analytics (HPDA) project "terrabyte" of the German Aerospace Center (DLR) and the Leibniz Supercomputing Center (LRZ).
 

Ref. system

Reference system identifier
EPSG / WGS 84 / World Mercator (EPSG:4326) / 8.6
 

Metadata

Metadata

File identifier
6b3b599e-b334-458d-beea-b43a7588b0ae   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Hierarchy level name
Dataset
Date stamp
2025-06-24T11:59:43
Metadata standard name
19115-1:2014/19139
Metadata standard version
1.0

  Point of contact

German Aerospace Center (DLR)  

 
 

  Overviews

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  Views

  • INSPIRE
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6b3b599e-b334-458d-beea-b43a7588b0ae   Access to the portal Read here the full details and access to the data.

  Associated resources

Not available


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