27 documents found, page 1 of 3
Environmental change in SW Portugal during the last 3900 years BP: an ostracoda...
Fernandes Martins, Maria João; Cabral, Maria Cristina; Magalhães, Vitor Hugo; Drago, Teresa; Fatela, Francisco; Oliveira, AnabelaOstracod, geochemical, mineralogical, and sedimentological proxies from a sediment core collected off Sagres (southwestern Portugal) were used to reconstruct Holocene environmental and hydrodynamic changes. Reduced variability of geochemical elements between ~4000 and ~1290 calibrated years before present suggests relatively stable conditions, regularly disturbed by higher-energy events. At ~1290 cal yrs BP, a ...
Sobre a geodiversidade da Ria Formosa
Andrade, César; Teixeira, Sebastião Braz; Silveira, Tanya; Drago, TeresaQuando se fala sobre a Ria Formosa, o foco recai muitas vezes sobre a sua rica biodiversidade — aves migratórias, peixes, cavalos marinhos, moluscos e uma flora única. No entanto, para para compreender verdadeiramente essa riqueza natural, é fundamental olhar também para a geodiversidade, um elemento essencial, mais abrangente, mas muitas vezes esquecido. A Ria Formosa é um sistema dinâmico, constituído por uma...
Neoichnology and sediment distribution in tidal flats of the mud‐dominated meso...
Shchepetkina, Alina; Drago, Teresa; Santos, Jacqueline; Alberto, Ana; Fatela, Francisco; Freitas, Maria da ConceiçãoInvertebrate burrow morphologies and distributions are presented for the tidal flats of the middle and lower reaches of the tide-influenced (mesotidal), mud-dominated Mira River estuary (SW Portugal) as an analogue for interpreting the ichnology of palaeoestuarine successions. Burrow distributions are revealed using field observations of biogenic and physical sedimentary structures, trace makers, collected grab...
Multiproxy characterization of high energy layers in the nner continental shelf...
Santos, Jacqueline; Drago, Teresa; Moura, Delminda; Magalhães, Vitor; Roque, Cristina; Silva, Pedro F.; Rodrigues, Ana Isabel; Terrinha, PedroThe occurrence of sedimentary layers indicating high energy events is common in the continental shelves sedimentary record. Their presence has been usually related either to tsunami waves or storm waves. In both cases, the identification of the transport mechanism requires a variety of proxies. This work presents the preliminary results of the analysis of a gravity core (MW-107) collected at ca. 57 m water dept...
Exploring offshore sediment evidence of the 1755 CE tsunami (Faro, Portugal): i...
Kümmerer, Vincent; Drago, Teresa; Veiga-Pires, C.; Silva, Pedro; Magalhaes, Vitor; Mena, Anxo; Lopes, Ana; Rodrigues, Ana Isabel; Schmidt, SabineOuter shelf sedimentary records are promising for determining the recurrence intervals of tsunamis. However, compared to onshore deposits, offshore deposits are more difficult to access, and so far, studies of outer shelf tsunami deposits are scarce. Here, an example of studying these deposits is presented to infer implications for tsunami-related signatures in similar environments and potentially contribute to...
Offshore 1755 CE Lisbon Tsunami deposit in the southern portuguese continental ...
Kümmerer, Vincent; Drago, Teresa; Veiga-Pires, Cristina; Silva, Pedro; Lopes, Ana; Magalhães, Vitor; Roque, Cristina; Rodrigues, Ana IsabelThe importance of tsunami hazard assessment is only possible if a complete dataset of events is available, allowing the determination of the recurrence intervals of the tsunamis adapted to local and regional conditions. One possible way to know these intervals is to study the offshore sedimentary record, looking for sediment remobilised and transported by the incoming tsunami waves and generated backwash curren...
Exploring offshore sediment evidence of the 1755 CE Tsunami (Faro, Portugal): i...
Kümmerer, Vincent; Drago, Teresa; C. Veiga-Pires, C.; Silva, Pedro F.; Magalhães, Vitor; Mena, Anxo; Lopes, Ana; Rodrigues, Ana Isabel; Schmidt, SabineOuter shelf sedimentary records are promising for determining the recurrence intervals of tsunamis. However, compared to onshore deposits, offshore deposits are more difficult to access, and so far, studies of outer shelf tsunami deposits are scarce. Here, an example of studying these deposits is presented to infer implications for tsunami-related signatures in similar environments and potentially contribute to...
Multidisciplinary characterization of Quaternary mass movement deposits in the ...
Silva, Pedro; Roque, C.; Drago, Teresa; Belen, A.; Ercilla, Gemma; Lopes, Ana; Lopez-Gonzalez, Nieves; CASAS, DAVID; Naughton, F.; Vazquez, Juan-TomasWe present a multidisciplinary study of the seismic stratigraphy, sedimentology, geochemistry and magnetism to characterize the Quaternary mass movement deposits (MMD) and the associated deformation in the Portimão Bank (Gulf of Cadiz, offshore SW Iberia). Two scales of approach have been applied. At large-scale (m to km) approach, were recognized and characterized a series of important and subsequent slide sca...
Projeto A Minha Praia: A Ciência Cidadã enquanto promotora do civismo ambiental...
Gouveia, Licínia; Lourenço, Carla; Afonso, João; Freitas, Ricardo; Cavaquinho, Vanessa; Fernandes, Aurélie; Domingues, Pedro; Veiga-Pires, C.À escala global, a conjugação das atividades humanas com o rápido incremento da população e os sucessivos avanços tecnológicos exercem uma crescente pressão sobre os ambientes marinhos. Atualmente, o lixo marinho é uma das maiores ameaças à vitalidade do Oceano Global: leva à destruição de habitats, à mortalidade de várias espécies, a efeitos adversos na nossa saúde e à quebra geral da produtividade económica p...
A ciência-cidadã ao serviço da mudança: o exemplo do projeto A Minha Praia
Gouveia, Licínia; Lourenço, Carla R.; Afonso, João; Freitas, Ricardo; Veiga-Pires, C.; Reis, Emanuel; Rodrigues, Miguel; Gomes, Tiago; Rodrigues, LuísVencedor da 1ª edição do Orçamento Participativo Portugal (2017), A Minha Praia é um projeto de monitorização ambiental que pretende sensibilizar para a conservação do meio marinho e estimular hábitos de consumo responsáveis, através de ações de ciência cidadã e civismo ambiental.