Subsidencia

Five Sentinel-1A radar scans acquired between 3 October and 2 December 2014 were combined to create this image of ground deformation in Mexico City. The deformation is caused by ground water extraction, with some areas of the city subsiding at up to 2.5 cm/month (red). Image: Copernicus data (2014)/ESA/DLR Microwave and Radar Institute–SEOM InSARap study.

Definition

Subsidence refers to the sinking of the ground due to groundwater removal, mining, dissolution of limestone (e.g. karst, sinkholes), extraction of natural gas, and earthquakes. (IRDR)

UN-SPIDER Regional Support Offices with hazard-specific expertise

Title: Centro Asiático para la Reducción de Desastres (ADRC)

Title: Oficina de Apoyo Regional de los Estados Unidos de América

Title: Oficina Regional de Apoyo de Grecia

Title: Oficina Regional de Apoyo de Indonesia

Title: Oficina Regional de Apoyo de Rumanía

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Italy uses Sentinel-1 satellite data to monitor sinking ground surfaces

The lowering or sinking of the ground’s surface, referred to as land subsidence, can cause serious damage to infrastructure and private property, and in turn, have an adverse impact on communities, individuals, and the economy. The European Space Agency’s (ESA) Sentinel-1 satellite, part of the Copernicus programme, is being used to monitor cases of land subsidence and contribute to risk assessment and urban development efforts.
From Sentinel-1 radar data collected over time, ground deformation maps can be created, which provide important insights to local authorities charged with implementing hazard mitigation and management strategies. For example, such maps recently helped authorities in...
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30/05/2019
Thematic Exploitation Platform (TEP - ESA)

ESA's Earth Observation Thematic Exploitation Platform (TEP) is a browser for satellite imagery and specific products on an environmental topic. The TEP platforms are divided into 7 categories: Coastal; Forstry; Geohazards; Hydrology; Polar; Urban; and Food Security. Each platform is a collaborative, virtual work environment providing access to EO data and the tools, processors and Information and Communication Technology resources required to work with them. TEP aims to bridge the gap between the users and the data and tools.
Publishing institution:
1. European Space Agency (ESA)
United States of America Regional Support Office
Greece Regional Support Office
Indonesia Regional Support Office
Romania Regional Support Office
The UN-SPIDER Regional Support Office (RSO) in Romania is hosted by the Romanian Space Agency (ROSA). The cooperation agreement between ROSA and UNOOSA was signed on occasion of the 52nd COPUOS, 4 June 2009.

Established in 1991, by the Government Decision no. 923/ 20 Nov 1995, ROSA is an independent public institution.

The mission of the Agency:

to coordinate the national space research and applications programs

to promote space development

to be the Government representative in the international space cooperation

to develop specific project oriented research

ROSA is authorized to establish research and development centres oriented on specific objectives of the Romanian Space Programme.
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Asian Disaster Reduction Center (ADRC)

The Asia Disaster Reduction Center (ADRC) and the United Nations Office of Outer Space Affairs (UNOOSA) signed the cooperation agreement on establishment of the ADRC UN-SPIDER Regional Support Office (RSO) on the occasion of the 52nd session of the Committee on the Peaceful Uses of Outer Space (COPUOS) on 4th June 2009.