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Ground subsidence in Mekong delta, Vietnam (2018-10-26)

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Activation date: 2018-10-26

Event type: Other

Activation reason:

The EMSN057 service provides geospatial information facilitating assessment of drivers of ground subsidence and to supporting analysis of the relation between detected ground subsidence and land use changes in Ca Mau, Long Xuyen and Rach Gia areas in the Mekong delta, Vietnam. The primary objective of the service is provision of spatially and temporally consistent, dense and synoptic results giving insight on the distribution and variance of subsidence phenomena in space and its dynamics in time. The persistent scatterers interferometry (PSI) technique, measuring ground deformations from stacks of archive SAR imagery (Sentinel-1 and TerraSAR-X), was utilized to estimate displacements. Products should complement ground based measurements, information from previous InSAR studies and contribute to evidence-based risk assessment.Annual Ground Subsidence Displacement The raster product, with 10 x 10m resolution, shows annual ground subsidence displacements in the vertical direction. The product was interpolated from displacement values of persistent scatterer points detected by the PSI technique from a stack of archived satellite SAR images.Annual Ground Subsidence Displacement ChangeThe change product shows differences of annual ground subsidence displacements in the vertical direction. It was obtained by deduction of previous from subsequent annual versions of Displacement products.In addition, average annual subsidence displacement velocity and displacement trend were evaluated from the PSI results, as demonstrated below. 

How to cite

European Commission, Joint Research Centre (2026): Ground subsidence in Mekong delta, Vietnam (2018-10-26). [Dataset] doi: 10.2905/JRC.Q8ZMS9R PID: http://data.europa.eu/89h/0f97c8d8-6470-400b-bea3-54ea8fac4294

Keywords

CEMSCopernicusCopernicus Emergency Management ServiceCopernicus Emergency Management Service Risk and Recovery Mapping ActivationCopernicus EMSCopernicus ServiceEmergencyEmergency ManagementEMSN057MappingOtherRisk and Recovery MappingVietnamVNM

Data access

Copernicus EMS Risk and Recovery Mapping Activation [EMSN057]: Ground subsidence in Mekong delta, Vietnam (2018-10-26)
Esri File Geodatabase

GDB is an Esri's file-based geodatabase format, stored as folders in a file system. It shall be used for Esri file geodatabases. The file is a zip archive that contains the gdb directory.

Use conditions
European Commission reuse notice

According to the European Commission reuse notice, reuse is authorised, provided the source is acknowledged. The reuse policy of the European Commission is implemented by the Decision of 12 December 2011. The general principle of reuse can be subject to conditions which may be specified in individual copyright notices. Therefore users are advised to refer to the copyright notices of the individual websites maintained under Europa and of the individual documents. Reuse is not applicable to documents subject to intellectual property rights of third parties.

Access conditions
No limitations

Anybody can directly and anonymously access the data, without being required to register or authenticate.

  • Maps produced in scope of this Copernicus EMS Risk and Recovery Mapping activation downloadable as georeferenced PDFs, TIFFs and JPEGs together with relevant geodatabase (GDB) and complete final report as well.

Spatial coverage

Lineage information

No additional information

Additional information

Published by
European Commission, Joint Research Centre
Contact email
jrc-data-support (at) ec.europa.eu
Update frequency
unknown

The event occurs with unknown regularity.

Language(s)
English

English is a member of the West Germanic group of the Germanic languages. It is an official language of almost 60 sovereign states and is now a global lingua franca.It is the third-most-common native language in the world and it is widely learned as a second language.

Data theme(s)
Regions and cities

dataset theme covering the domains of regions and cities, where regions is defined by political geography units including sovereign states, subnational administrative areas, and multinational groupings, and cities are characterised as large human settlements
Science and technology

dataset theme covering the domains of science and technology, with science being the systematic pursuit of knowledge through testable explanations and predictions across natural, social, and formal disciplines, and technology encompassing the collective techniques, skills, methods, and processes used in producing goods, providing services, or achieving objectives like scientific research

Issued date
2018-10-26
Created date
02 Mar 2026 17:07
Modified date
16 Aug 2021 06:51
Landing page
https://emergency.copernicus.eu/EMSN057 
Dataset identifier
http://data.europa.eu/89h/0f97c8d8-6470-400b-bea3-54ea8fac4294
Other identifiers
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