Sandra Heleno
Sandra Heleno
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A past giant lateral collapse and present-day flank instability of Fogo, Cape Verde Islands
SJ Day, SIN Heleno da Silva, J Fonseca
Journal of Volcanology and Geothermal Research 94 (1-4), 191-218, 1999
Separation between water and land in SAR images using region-based level sets
M Silveira, S Heleno
IEEE Geoscience and Remote Sensing Letters 6 (3), 471-475, 2009
Persistent scatterers interferometry detects and measures ground subsidence in Lisbon
SIN Heleno, LGS Oliveira, MJ Henriques, AP Falcão, JNP Lima, ...
Remote Sensing of Environment 115 (8), 2152-2167, 2011
Monitoring recent changes of vegetation in Fildes Peninsula (King George Island, Antarctica) through satellite imagery guided by UAV surveys
V Miranda, P Pina, S Heleno, G Vieira, C Mora, CEGR Schaefer
Science of the Total Environment 704, 135295, 2020
Semiautomated object-based classification of rain-induced landslides with VHR multispectral images on Madeira Island
S Heleno, M Matias, P Pina, AJ Sousa
Natural Hazards and Earth System Sciences 16 (4), 1035-1048, 2016
Large Holocene earthquakes in the Lower Tagus Valley fault zone, central Portugal
GM Besana-Ostman, SP Vilanova, ES Nemser, A Falcao-Flor, S Heleno, ...
Seismological Research Letters 83 (1), 67-76, 2012
Fogo Volcano, Cape Verde Islands: seismicity-derived constraints on the mechanism of the 1995 eruption
SINH da Silva, SJ Day, J Fonseca
Journal of volcanology and geothermal research 94 (1-4), 219-231, 1999
Systematic InSAR monitoring of African active volcanic zones: What we have learned in three years, or an harvest beyond our expectations
N d'Oreye, J Fernandez, P Gonzalez, F Kervyn, C Wauthier, ...
2008 Second Workshop on Use of Remote Sensing Techniques for Monitoring …, 2008
Multiparameter monitoring of Fogo Island, Cape Verde, for volcanic risk mitigation
JFBD Fonseca, BVE Faria, NP Lima, SIN Heleno, C Lazaro, NF d’Oreye, ...
Journal of Volcanology and Geothermal Research 125 (1-2), 39-56, 2003
Seasonal tropospheric influence on SAR interferograms near the ITCZ–The case of Fogo Volcano and Mount Cameroon
SIN Heleno, C Frischknecht, N d’Oreye, JNP Lima, B Faria, R Wall, ...
Journal of African Earth Sciences 58 (5), 833-856, 2010
Comparison and cross-checking of historical, archaeological and geological evidence for the location and type of historical and sub-historical eruptions of multiple-vent …
SJ Day, JC Carracedo, H Guillou, FJ Pais Pais, ER Badiola, J Fonseca, ...
Geological Society, London, Special Publications 171 (1), 281-306, 2000
The 20 February 2010 Madeira Island flash-floods: VHR satellite imagery processing in support of landslide inventory and sediment budget assessment
C Lira, M Lousada, AP Falcão, AB Gonçalves, S Heleno, M Matias, ...
Natural Hazards and Earth System Sciences 13 (3), 709-719, 2013
The Eastern Lower Tagus Valley Fault Zone in central Portugal: Active faulting in a low-deformation region within a major river environment
C Canora, SP Vilanova, GM Besana-Ostman, J Carvalho, S Heleno, ...
Tectonophysics 660, 117-131, 2015
A seismological investigation of the Fogo Volcano, Cape Verde Islands: preliminary results
SIN Heleno, J Fonseca
Volcanol. Seismol 20, 199-217, 1999
Water/land segmentation in SAR images using level sets
M Silveira, S Heleno
2008 15th IEEE International Conference on Image Processing, 1896-1899, 2008
Hydroacoustic detection of volcanic ocean-island earthquakes
G Helffrich, SIN Heleno, B Faria, JFBD Fonseca
Geophysical Journal International 167 (3), 1529-1536, 2006
Assessment of the influence of survey design and processing choices on the accuracy of tree diameter at breast height (DBH) measurements using UAV-based photogrammetry
BM Moreira, G Goyanes, P Pina, O Vassilev, S Heleno
Drones 5 (2), 43, 2021
Calibration of 2D hydraulic inundation models in the floodplain region of the lower Tagus River
R Pestana, M Matias, R Canelas, A Araújo, D Roque, E Van Zeller, ...
Proceedings of the ESA Living Planet Symposium, Edimburgh, UK, 9-13, 2013
Observations of high-frequency harmonic tremor in Fogo, Cape Verde Islands
SIN Heleno, BVE Faria, Z Bandomo, JFBD Fonseca
Journal of volcanology and geothermal research 158 (3-4), 361-379, 2006
OBIA flood delimitation assisted by threshold determination with principal component analysis
D Roque, N Afonso, AM Fonseca, S Heleno
Photogrammetric Engineering & Remote Sensing 80 (6), 551-557, 2014
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