Satellite data for dam safety monitoring

Abstract

The use of datasets from satellites to aid the monitoring of dams has been possible for many years. Within the last five years there has been a rapid development in the type and accuracy of the data available, led by an influx of new satellites and improved access to these datasets. This paper gives an overview of the different types of satellite datasets and satellite infrastructure relevant to dam safety that are currently available, explains the complex processes of converting raw satellite data into useable information and summarises the advantages and disadvantages of each data type along with indications of the level of accuracy and cost. The information presented by the authors is based on experience gained undertaking a 3 year, £4 m, UK-government-funded research project to investigate and combine many types of space data to improve the monitoring of dams.

Using GPS and Run-Off Rates Data to Study the Close Monitoring Networks for Dams – Al-Kut Barrages as a Case Study

“…The main objective of studying the difference between the observations is to detect unexpected horizontal and vertical deformations at an early stage, and thus assess the infrastructure and integrity of the barrage. Where the results of measurements of deformations is important for engineering installations and constitute the basis for evaluating the safety of these facilities [Bayik et al, 2021;Goff et al, 2021], thus addressing the deformations at an early time, before it is too late. The cracks and movements in the elements of the facility may lead to its exit from service or may lead to its collapse, causing major disasters and human disasters, especially in dams and barrages [Goff et al, 2021].…”