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
 

INSPIRE

Identification

File identifier
6b3b599e-b334-458d-beea-b43a7588b0ae   XML
Hierarchy level
Dataset
Online resource
Protocol
WWW:LINK-1.0-http--link
Protocol
WWW:LINK-1.0-http--link
Protocol
WWW:LINK-1.0-http--link
Protocol
OGC:WMS-http-get-capabilities
Protocol
WWW:LINK-1.0-http--link
Protocol
OGC:WMS
Protocol
OGC:WMS
Resource identifier
code
https://geoservice.dlr.de/catalogue/srv/metadata/6b3b599e-b334-458d-beea-b43a7588b0ae
Metadata language
eng
Spatial representation type
Grid
Encoding
Projection
code
WGS 84 / World Mercator (EPSG:4326)
 

Classification of data and services

Topic category
  • Geoscientific information
 

Classification of data and services

Coupled resource
Coupled resource
 
 

Classification of data and services

Coupled resource
Coupled resource
 
 

Keywords

GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Geology
  • Natural risk zones
Spatial scope ( Place )
Other keywords
Keywords
  • DLR
  • EOC
  • Land
  • SAR4Tectonics
  • ground deformation
  • high-strain areas
  • tectonic plate boundaries
  • PS/DS
  • InSAR
  • seismic risk assessment
  • Sentinel-1
  • opendata
 
 

Geographic coverage

N
S
E
W


 

Temporal reference

Temporal extent
Temporal extent
Date ( Creation )
2025-06-02T00:00:00
 

Quality and validity

Lineage
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.
Denominator
200000
 

Conformity

Conformity
Conformity
 

Conformity

Conformity
Conformity
Explanation
See the referenced specification.
 

Restrictions on access and use

Access constraints
License
Access constraints
Nutzungsbedingungen: License, https://creativecommons.org/licenses/by/4.0/
Access 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)"}

 

Restrictions on access and use

 

Responsible organization (s)

Contact for the resource
Organisation name
German Aerospace Center (DLR)
Email
giorgio.gomba@dlr.de
Organisation name
German Aerospace Center (DLR)
Email
geoservice@dlr.de
 

Responsible organization (s)

Contact for the resource
Organisation name
German Aerospace Center (DLR)
Email
giorgio.gomba@dlr.de
Organisation name
German Aerospace Center (DLR)
Email
geoservice@dlr.de
 

Metadata information

Contact for the metadata
Organisation name
German Aerospace Center (DLR)
Email
geoservice@dlr.de
Date stamp
2025-06-24T11:59:43
Metadata language
English
Character set
UTF8
 
 

SDS

Conformance class 1: invocable

Access Point URL
Endpoint URL
Technical specification
 

Conformance class 2: interoperable

Coordinate reference system
 
Quality of Service
 
Access constraints
Limitation
 
Use constraints
Limitation
 
Responsible custodian
Contact for the resource
 
 

Conformance class 3: harmonized

 
 

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  Associated resources

Not available