Understanding the 3D Structure of a Thermal Water Fissured Granite Aquifer by Use of Geophysical Studies     

E. C. Ramalho  J. P. Carvalho  R. Gon?alves  F. A. Monteiro Santos 《Pure and Applied Geophysics》2012,169(11):2031-2046

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Lithosphere conductivity structure using the CAM-1 (Lisbon-Madeira) submarine cable     

Fernando A. Monteiro Santos  António Soares  Rita Nolasco  Helena Rodrigues  Rafael Luzio  Nick Palshin  the ISO-D team 《Geophysical Journal International》2003,155(2):591-600

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Determination of Gold in Ores by Isobutyl Methyl Ketone Extraction and Electrothermal Atomic Absorption Spectrometry: A Stability Study of the Metal in Organic Media     

Maria Inês C. Monteiro  Marcos Paulo A. Lavatori  Nilza Maria M. de  Oliveira 《Geostandards and Geoanalytical Research》2003,27(3):245-249

A method involving gold extraction into isobutyl methyl ketone (IBMK), after partial dissolution with aqua regia , with determination by electrothermal atomic absorption spectrometry is described. The pyrolysis and atomisation temperatures were optimized using a pyrolytic graphite forked platform. The stability study of gold in isobutyl methyl ketone extract indicated that closed polypropylene containers (3% absorbance measurement changes) were better than both open polypropylene and closed glass containers over periods of up to 22 hr. Satisfactory recoveries of 99 and 102% were obtained when Au, in the IBMK extracts from CH-3 and MA-2 reference materials, were determined after storage of the extracts in closed polypropylene containers for 22 hr, respectively.  相似文献   

A geochemical and geophysical approach to derive a conceptual circulation model of CO2-rich mineral waters: A case study of Vilarelho da Raia, northern Portugal     

J. Marques  Monteiro F. Santos  R. Graça  R. Castro  L. Aires-Barros  L. Mendes Victor 《Hydrogeology Journal》2001,9(6):584-596

The Vilarelho da Raia-Chaves region, located in northern Portugal adjacent to the Spanish border, is characterized by both hot and cold CO₂-rich mineral waters issuing from springs and drilled wells. The present paper updates the conceptual circulation model of the Vilarelho da Raia cold CO₂-rich mineral waters. Vilarelho da Raia mineral waters, dominated by Na and HCO₃ ions, have formed mainly by interaction with CO₂ of deep-seated mantle origin. The δ ¹⁸O, δ ²H and ³H values indicate that these waters are the result of meteoric waters infiltrating into Larouco Mountain, NW of Vilarelho da Raia, circulating at shallow depths in granitic rocks and moving into Vilarelho da Raia area. The conceptual geochemical and geophysical circulation model indicates that the hot and cold CO₂-rich mineral waters of Chaves (76 °C) and Vilarelho da Raia (17 °C) should be considered manifestations of similar but not the same geohydrological systems. Electronic Publication  相似文献   

Motional induction voltage measurements in estuarine environments: the Ria de Aveiro Lagoon (Portugal)     

Rita Nolasco  António Soares  João M. Dias  Fernando A. Monteiro Santos  N. A. Palshin  Patricia Represas  Nuno Vaz 《Geophysical Journal International》2006,166(1):126-134

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Joint inversion of gravity and geoelectrical data for groundwater and structural investigation: application to the northwestern part of Sinai, Egypt   总被引：2，自引：0，他引：2  

F. A. Monteiro Santos  S. A. Sultan  Patrícia Represas  A. L. El Sorady 《Geophysical Journal International》2006,165(3):705-718

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Groundwater response to climate variability in Mediterranean type climate zones with comparisons of California (USA) and Portugal     

Malmgren  Katherine A.  C. Neves  Maria  Gurdak  Jason J.  Costa  Luis  Monteiro  Jos&#; P. 《Hydrogeology Journal》2022,30(3):767-782

Hydrogeology Journal - Aquifers are a fundamental source of freshwater, yet they are particularly vulnerable in coastal regions with Mediterranean type climate, due to both climatic and...  相似文献   

A comparison of direct macrofaunal mortality using three types of clam dredges     

Gaspar  M.B; Leitao  F; Santos  M.N; Chicharo  L; Dias  M.D; Chicharo  A; Monteiro  C.C 《ICES Journal of Marine Science》2003,60(4):733-742

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Epibiotic assemblages on the pen shell Pinna rudis (Bivalvia,Pinnidae) at Matiota Beach,São Vicente Island,Cabo Verde     

EP Lopes  N Monteiro  AM Santos 《African Journal of Marine Science》2020,42(1):13-21

The rough pen shell Pinna rudis Linnaeus, 1758 (family Pinnidae), a mollusc with an Atlantic–Mediterranean distribution, is able to live in coarse sandy substrates. Considering its shell structure and ecological characteristics, P. rudis can enhance biodiversity by providing a substrate for settlement on its shell. For this reason, we compared the diversity of benthic taxa around P. rudis shells with the species diversity on P. rudis shells, at Matiota Beach, São Vicente Island, Cabo Verde. We sampled an area of 900 m2 and recorded data in situ to estimate the population size of P. rudis and the epibiotic and benthic community diversity. The average density of P. rudis estimated in the sampled area was 6.6 ind. 100 m–2 and the highest density was found at between 2 and 3 m depth, mostly in biogenic and sandy substrates. The epibiotic species diversity on P. rudis shells was significantly higher than the species diversity in the microhabitat around the shells. The P. rudis shell seems to play an important role in increasing the biodiversity of the ecosystem, with some species found only as epibionts on P. rudis.  相似文献   

Environmental assessment of two artificial reef systems off southern Portugal (Faro and Olhão): A question of location     

M. Vicente  M. Falcão  M.N. Santos  M. Caetano  D. Serpa  C. Vale  C. Monteiro 《Continental Shelf Research》2008

This study investigates environmental assessment of artificial reef systems deployed at different areas in terms of nutrient cycling and seabed organic enrichment. Two identical artificial reef systems: Olhão Artificial Reef—OAR (37°00′55″N and 007°44′54″W) and Faro Artificial Reef—FAR (36°58′65″N and 008°00′91″W) were deployed in southern Portuguese coast, adjacent to a highly productive coastal lagoon (Ria Formosa) in 1990 and monitorized over two years (1992–1993). Water samples were collected within OAR and FAR systems, inside the lagoon (L) and in a non-reef area (NRA) to evaluate nutrient dynamics. Settled particles and sediment cores were also sampled within OAR and FAR to determine aluminium, calcium, silicon and chlorophyll a and organic and inorganic carbon, nitrogen and phosphorous. Results obtained showed that: (i) water column nutrients evidenced seasonal and spatial variability. The maximum nutrients concentration was recorded inside the lagoon and in OAR, mainly during warmer periods. Ammonium, nitrate and silicate in OAR were statistically higher (p<0.01, n=18) than in FAR and NRA; (ii) particulate organic carbon and nitrogen in FAR settled particles were significantly higher (p<0.005) than those collected at OAR; and (iii) organic carbon and nitrogen, calcium, aluminium and chlorophyll a in OAR upper sediment were higher than at FAR. The overall results suggest that OAR is a productive system, emphasizing its contribution to the trophic chain pull out, while FAR presented oceanic oligotrophic water.  相似文献