Highlights It is possible to monitor the structure of a dam using space-based remote sensing. GPS data can be used for compute displacements and reservoir water level. Determination of displacements using GAMIT/GLOBK for the N, E and U components. Computation of daily reservoir level measurements based on GNSS reflectometry. The deformation of the dam in the North component is related to the reservoir level.

    Abstract In order to find a possible relation between the reservoir level and the deformation of the Sanalona dam, the horizontal and vertical displacements for a period of 3.5 years using GPS observations were calculated. The GAMIT/GLOBK scientific software was used for the relative processing of GPS observations and annual speeds over the dam of −6.77 mm/yr, −9.95 mm/yr and −1.62 mm/yr were calculated for the N, E and U components, respectively. In addition, the GNSS reflectometry inversion technique was applied to determine the daily reservoir level of the dam, the values obtained were compared with the real reference values of graduated rulers in situ. The GNSS-R achieved a correlation coefficient ( ρ ) of 0.97 with a root-mean-square error (RMSE) of 1.36 m and a regression slope of 0.932 m/m. The deformation in the x Dam component obtained a greater relation with the reservoir level due to the thrust force generated on the crest. The results demonstrate that it is possible to use a GPS antenna to carry out two monitoring processes together on a dam: (1) determination of displacements and (2) calculation of reservoir level.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Monitoring of local deformations and reservoir water level for a gravity type dam based on GPS observations



    Published in:

    Advances in Space Research ; 69 , 1 ; 319-330


    Publication date :

    2021-09-16


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Pre-gravity compensation type large reservoir sewage self-purification equipment

    LUO QUANFU / JIN FAN / YANG NING et al. | European Patent Office | 2022

    Free access


    METHOD FOR MEASUREMENTS INTRODUCTION DURING MONITORING LOCAL RESIDUAL DEFORMATIONS OF THE SHIP HULL

    BURAKOVSKIJ PAVEL EVGENEVICH / BURAKOVSKIJ EVGENIJ PETROVICH / MYSNIK ARTEM VLADIMIROVICH | European Patent Office | 2019

    Free access


    Monitoring Small Deformations In An Instrument

    Hagopian, John G. / Northcutt, William | NTRS | 1990