Banca de DEFESA: JOSÉ RAURIUM BACALHAU

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : JOSÉ RAURIUM BACALHAU
DATE: 05/08/2022
TIME: 08:30
LOCAL: Pos Graduação Engenharia Civil
TITLE:

Volumetric Characterization of Reservoirs using Remote Sensing

KEY WORDS:

Elevation-area-volume relationships. ICESat-2. Digital Terrain Model. 3D bathymetry.

PAGES: 106
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

The water resources are increasingly used in extreme conditions. The demographic increase with increased demand for consumption, food production, navigation and energy generation, mainly, has called for innovative and efficient responses in the management and monitoring of water resources. The Brazilian semiarid region is highly dependent on reservoirs, and accurate bathymetric data are essential to study the dynamics and storage variability of these water bodies. In recent decades, studies have used remote sensing products to calculate these data; however, in situ water level and field survey are often necessary to adjust the elevation-area-volume (EAV). This study aimed to develop the application of bathymetric calculation using the observed water level and ICESat-2 satellite terrain profile data of large and medium-sized reservoirs. The combination of satellite images with altimetric data allows for the extraction of water contours, whose points contain elevation information. A digital terrain model (DTM) was generated, and an elevation-area-volume (EAV) curve was calculated for two reservoirs in Northeast Brazil, Sobradinho and Poço da Cruz, which have capacities of 34.116 and 0.4837 km3, respectively. The water level from ICESat-2 was compared to that of the observed data from the Sobradinho, and DTM and EAV curves were analyzed for the two reservoirs. Using the water level from Sobradinho reservoir stations, this method covered 99% of the useful volume. The ICESat-2 data covered 50% of the storage capacity in the Sobradinho and 89% in Poço da Cruz. The in-situ and ICESat-2 data-based EAV curves showed volumes with Pearson’s correlations equal to 0.99 for both reservoirs, and normalized root mean square errors of 2.62% and 4.13% for Sobradinho and Poço da Cruz, respectively. The results revealed that this strategy can be economic and viable, as it uses available free data with the potential to generate high-resolution bathymetry in reservoirs with different geometric characteristics.

BANKING MEMBERS:
Externo à Instituição - BRUNO COLLISCHONN
Externo à Instituição - DANIEL MEDEIROS MOREIRA
Externa ao Programa - 2103925 - ANA LUCIA BEZERRA CANDEIAS
Interno - 2130589 - JOSE ALMIR CIRILO
Presidente - 2193972 - LEIDJANE MARIA MACIEL DE OLIVEIRA