3 documents found, page 1 of 1
A Land Cover Change Detection Approach to Assess the Effectiveness of Conservat...
Tiengo, Rafaela; Merino De Miguel, Silvia; Uchôa, Jéssica; Gil, Artur José FreireSmall oceanic islands, such as São Miguel Island in the Azores (Portugal), face heightened susceptibility to the adverse impacts of climate change, biological invasions, and land cover changes, posing threats to biodiversity and ecosystem functions and services. Over the years, persistent conservation endeavors, notably those supported by the EU LIFE Programme since 2003, have played a pivotal role in alleviati...
Detection of Geothermal Anomalies in Hydrothermal Systems Using ASTER Data: The...
Uchôa, Jéssica; Viveiros, Fátima; Tiengo, Rafaela; Gil, Artur José FreireABSTRACT: Current-day volcanic activity in the Azores archipelago is characterized by seismic events and secondary manifestations of volcanism. Remote sensing techniques have been widely employed to monitor deformation in volcanic systems, map lava flows, or detect high-temperature gas emissions. However, using satellite imagery, it is still challenging to identify low-magnitude thermal changes in a volcanic sy...
Using Sentinel-1 GRD SAR data for volcanic eruptions monitoring: the case-study...
Tiengo, Rafaela; Pacheco, José M. R.; Uchôa, Jéssica Garcia; Gil, Artur José FreireThe last eruption in the Fogo Volcano, which began in November 2014, was the first eruptive event captured by the Sentinel-1 (S1) mission. The present work sought to complement previous research and explore the potential of utilizing data from the Synthetic Aperture Radar (SAR) S1 mission to better monitor active volcanic areas. S1 Ground Range Detected (GRD) data was used to analyze the changes that occurred i...