Results 1 to 10 of about 163,621 (161)

Spatially Stratified and Multi-Stage Approach for National Land Cover Mapping Based on Sentinel-2 Data and Expert Knowledge

open access: yesRemote Sensing, 2022
Portugal is building a land cover monitoring system to deliver land cover products annually for its mainland territory. This paper presents the methodology developed to produce a prototype relative to 2018 as the first land cover map of the future annual
Hugo Costa   +4 more
doaj   +1 more source

Development of flume model of inclined capillary barrier (clay silt/CDW) in a subtropical climate scenario [PDF]

open access: yesMATEC Web of Conferences, 2021
Interest in research on capillary barrier (CB) in regions with humid climates (tropical and subtropical) is increasing. One of the main advantages of such cover type is the greater flexibility regarding the materials that could compose it.
Oliveira Thays C.F.   +2 more
doaj   +1 more source

INTRODUCING AUTOMATIC SATELLITE IMAGE PROCESSING INTO LAND COVER MAPPING BY PHOTO-INTERPRETATION OF AIRBORNE DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
A series of five land cover maps, widely known as COS (Carta de Uso e Ocupação do Solo), have been produced since 1990 for mainland Portugal. Previous to 2015, all maps were produced through photo-interpretation of orthophotos.
H. Costa   +5 more
doaj   +1 more source

Living in the Mountains. Late Mesolithic/Early Neolithic Settlement in Northwest Portugal: Rock Shelter 1 of Vale de Cerdeira (Vieira do Minho)

open access: yesOpen Archaeology, 2022
In the 1990s, a research project was developed to identify, in the mountainous areas of the Northwest (NW) of Portugal, the existence of an occupation model associated with the last hunter–gatherer prehistoric communities in the region.
Xavier Pedro   +2 more
doaj   +1 more source

Indicador qualitativo de tensões no uso das águas em identidades territoriais de vida rural e urbana: evidências empíricas na Região Metropolitana de Salvador, Bahia (Brasil)

open access: yesDesenvolvimento e Meio Ambiente, 2021
The objective of this paper is to understand the distribution of the empirical evidence that intends rural and urban ways of life in relation to the use of waters and territorial identities in the Metropolitan Region of Salvador (MRS), Bahia, Brazil.
Débora Carol Luz da Porciuncula   +2 more
doaj   +1 more source

Land Cover Mapping from Remotely Sensed and Auxiliary Data for Harmonized Official Statistics

open access: yesISPRS International Journal of Geo-Information, 2018
This paper describes a general framework alternative to the traditional surveys that are commonly performed to estimate, for statistical purposes, the areal extent of predefined land cover classes across Europe.
Hugo Costa   +4 more
doaj   +1 more source

Magnetic mineralogy of Variscan granites from northern Portugal: an approach to their petrogenesis and metallogenic potential

open access: yesGeologica Acta, 2020
Northern Portugal is characterized by the occurrence of numerous W hydrothermal deposits spatially associated with granites. The primary goal of this work is to establish a relationship between the magnetic behavior of the granites and the redox ...
C. Cruz, H. Sant’Ovaia, F. Noronha
doaj   +1 more source

Metodologia para avaliação dos fatores condicionantes da velocidade em regime livre em ambiente periurbano

open access: yesTransportes, 2012
Neste artigo, apresenta-se uma metodologia para a avaliação macroscópica da influência das características geométricas e ambientais e da sinalização de velocidade limite legal na velocidade em regime livre praticada pelos condutores em zonas periurbanas ...
António Lobo   +3 more
doaj   +1 more source

Construção de instrumentos de política educativa local: processos participados em contexto de pandemia

open access: yesRevista Portuguesa de Investigação Educacional, 2021
A construção de instrumentos de política educativa local (Cartas Educativas e Planos Estratégicos Educativos Municipais) tem sido reforçada com a participação de atores da comunidade educativa, em várias etapas do processo.
Ana Grifo   +2 more
doaj   +1 more source

Turismo Rural em Portugal no contexto de incerteza decorrente da COVID-19

open access: yesBiblos, 2022
Este artigo associa o conceito de incerteza aos territórios rurais, ao turismo e à situação pandémica atual, e tem como objetivo principal refletir sobre o desenvolvimento do turismo rural em Portugal num contexto de incerteza, marcado pela COVID-19 ...
Susana Silva, Paulo Carvalho
doaj   +1 more source

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