Banca de DEFESA: MAYARA SILVA DE OLIVEIRA
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.STUDENT : MAYARA SILVA DE OLIVEIRA
DATE: 10/08/2023
TIME: 09:00
LOCAL: Pós-Graduação Engenharia Civil
TITLE:
KEY WORDS:
PAGES: 134
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:
Terrestrial Water Storage (TWS), consisting of water stored in the soil, groundwater, surface reservoirs, in the canopy, and water equivalent of ice and snow, is an important state of the Earth system. Its components influence water and energy flows and represent important renewable freshwater reserves. In semi-arid lands, understanding the dynamics of variations in these water stocks and planning for long-term sustainable use is essential for local populations. Therefore, this work aims to evaluate the behavior of the TWS and its components for the Northeast Region of Brazil and the north of the state of Minas Gerais, during the period from February 2003 to March 2021, using data from the GLDAS 2.2. Soil moisture anomaly (SMA) series from the ESA CCI SM were validated against in situ stations. Then series of SMA, anomalies of groundwater (GWSA) and terrestrial water storage (TWSA) from GLDAS 2.2 were validated using ESA CCI SM data, in situ monitoring wells and products from GRACE mission, respectively. Validations were performed by analyzing Pearson’s correlation and Willmott’s d index. After validation, the GLDAS 2.2 series were used to calculate the drought indices of soil moisture, groundwater and continental water storage: SMI, GWI and WSDI, respectively. The SMI and GWI indices were compared with the SPI index for different time scales, and their periodic structures were analyzed using the continuous wavelet transform. Soil moisture and TWS validations showed that the studied sources have well correlated data. As for groundwater, the GWSA of the GLDAS and the wells had a very weak to strong correlation, with the main divergences occurring when the GLDAS simulated wetter trends than those demonstrated by the wells. Drought indices showed that, for most hydrographic regions, the second decade of the 21st century was drier than the first. The greater correlation of SMI and GWI with SPI 3 and SPI 12, respectively, in addition to the periodic structures revealed by wavelet analysis suggest reliability of the GWSA and SMA obtained from the GLDAS 2.2 data.
COMMITTEE MEMBERS:
Externo à Instituição - LUIZ ANTÔNIO CÂNDIDO - INPA
Presidente - 2726911 - ANDERSON LUIZ RIBEIRO DE PAIVA
Externo à Instituição - DIEGO CEZAR DOS SANTOS ARAÚJO