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| Registros recuperados: 374 | |
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| CORDEIRO, G. G.; SOARES, J. M.; RICHE, G.. |
| Descricao do perfil do solo, condutividade hidraulica, estudo do lencol freatico, estudo de drenagem na Fazenda Frutivale, analise quimica da agua do lencol e de drenagem, salinidade dos solos, profundidade dos drenos, altura maxima do lencol no ponto medio entre drenos, espacamento entre drenos recomendados para cada area da Fazenda Frutivale. |
| Tipo: Outras publicações técnicas (INFOTECA-E) |
Palavras-chave: Solo; Lençol Freático; Salinidade; Salinity; Soil; Water table. |
| Ano: 1994 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131824 |
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| VALDIVIESO SALAZAR, C. R.; FELIX, S. G.; CORDEIRO, G. G.. |
| Como parte do programa de controle da salinidade e recuperacao de solos salinos, adotado pelo Departamento Nacional de Obras Contras as Secas- DNOCS, foram instalados 106 ha de drenagem subterranea no Setor I, do Perimetro Irrigado de Vaza-Barris PIVB. No acompanhamento e supervisao da instalacao, foram levantados os custos envolvidos da drenagem e avaliados em testes de campo, o potencial de recuperacao dos solos drenados, as limitacoes e o retorno da atividade na primeira fase de recuperacao com a conducao de uma cultura de sorgo, a partir da qual projetou-se um esquema de avaliacao economica, para um periodo de dez anos. O custo total de recuperacao foi 220,07 OTN/ha, dos quais 184,5 OTN/ha constituiram o custo da drenagem subterranea. Cada lavagem sem... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Recuperação; Vaza-barris; Bahia; Reclamation; Natural resource.; Solo; Recurso natural; Drenagem; Irrigação; Salinidade.; Drainage; Irrigation; Salinity; Soil.. |
| Ano: 1988 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133657 |
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| SOARES, J. M.; CORDEIRO, G. G.. |
| Verificou-se nos tres sistemas de manejo (drenagem natural com lamina de irrigacao Li) (aproximadamente igual ao uso consuntivo das culturas); drenagem com manilhas, com a mesma lamina de irrigacao; e drenagem com manilhas, com lamina de irrigacoa igual a 1, 2, Li>), uma elevada influencia das chuvas no processo de lixiviacao dos sais, o que abre boas perspectivas para o aproveitamento de agua salina para irrigacao, nas condicoes em que os experimentos estao sendo realizados. Nos testes, tem sido utilizados os capins elefante e Panicum colaratum. |
| Tipo: Artigo de divulgação na mídia (INFOTECA-E) |
Palavras-chave: Irrigação; Água; Drenagem; Salinidade; Irrigation; Salinity; Water. |
| Ano: 1983 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133420 |
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| De Vernal, A; Hillaire-marcel, C; Peltier, Wr; Weaver, Aj. |
| During the Last Glacial Maximum, the northwestern North Atlantic constituted a major conduit for Labrador and Greenland ice sheet meltwaters. Vertical density gradients in its upper water masses have been reconstructed by combining information from transfer functions based on dinocysts and from oxygen isotope measurements (delta(18)O) in planktonic foraminifera. Transfer functions yield temperature and salinity and thus potential density (sigma(theta)) for the warmest (August) and coldest (February) months in the photic zone. The delta(18)O values in different size fractions of epipelagic (Globigerina bulloides) and mesopelagic (Neogloboquadrina pachyderma left-coiled (Np1)) foraminifera allow us to assess sigma(theta) gradients through the pycnocline... |
| Tipo: Text |
Palavras-chave: Last Glacial Maximum; LGM; North Atlantic; Salinity; Density; Pycnocline. |
| Ano: 2002 |
URL: https://archimer.ifremer.fr/doc/00223/33405/31861.pdf |
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| Boulais, Myrina; Suquet, Marc; Arsenault-pernet, Marie Eve Julie; Malo, Florent; Queau, Isabelle; Pignet, Patricia; Ratiskol, Dominique; Le Grand, Jacqueline; Huber, Matthias; Cosson, Jacky. |
| Investigating the roles of chemical factors stimulating and inhibiting sperm motility is required to understand the mechanisms of spermatozoa movement. In this study, we described the composition of the seminal fluid (osmotic pressure, pH, and ions) and investigated the roles of these factors and salinity in initiating spermatozoa movement in the Pacific oyster. The acidic pH of the gonad (5.82 ± 0.22) maintained sperm in the quiescent stage and initiation of flagellar movement was triggered by a sudden increase of spermatozoa external pH (pHe) when released in seawater (SW). At pH 6.4, percentage of motile spermatozoa was three times higher when they were activated in SW containing 30 mM NH4Cl, which alkalinizes internal pH (pHi) of spermatozoa, compared... |
| Tipo: Text |
Palavras-chave: Seminal fluid; Spermatozoa; Motility; PH; Salinity; Ions. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00428/53976/55137.pdf |
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| Ropert, Michel; Kopp, Joel. |
| The Shellfish Laboratory of Normandy (LCN : Laboratoire Conchylicole de Normandie) observed unusual hydrologic anomalies associated with important oyster mortalities during the winter of 1999. These anomalies were described as sudden salinity variations during the lidal cycle, particularly on the rising tide. Starting in 1996 a multi-parameter probe was used to monitor salinity, temperature and depth every 10 to 20 minutes in the inter-tidal zone. Alter data processing and filtering, two criteria concerning low salinity were chosen : amplitude and duration. Application of a cumulative function (Ibanez et al., 1993) to this time series data treatment showed the 3 year trend (1996-1999). Salinity variation data and climatic data were used in a multivariate... |
| Tipo: Text |
Palavras-chave: Crassostrea gigas; Mortalités; Salinité; Baie des Veys; Suivi; Crassostrea gigas; Mortality; Salinity; Baie of Veys; Monitoring. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00102/21310/18928.pdf |
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| Fichaut, Michele; Garcia, Maria-jesus; Giorgetti, Alessandra; Iona, Athanasia; Kuznetsov, Alexander; Rixen, Michel; Medar Group,. |
| A comprehensive database of temperature, salinity and bio-chemical parameters in the Mediterranean and Black Sea has been constructed through comprehensive co-operation between the bordering countries. Statistical climatologies have been computed with all assembled and quality controlled data. The database, designed to initiate and validate prediction models, also represents a system to quality-check new incoming data produced by ocean observing systems. |
| Tipo: Text |
Palavras-chave: Database; Temperature; Salinity; Nutrients; Climatology; Quality control. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00351/46177/45876.pdf |
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| Zine, S; Boutin, J; Font, J; Reul, Nicolas; Waldteufel, P; Gabarro, C; Tenerelli, Joseph; Petitcolin, F; Vergely, J; Talone, M; Delwart, S. |
| The L-band interferometric radiometer onboard the Soil Moisture and Ocean Salinity mission will measure polarized brightness temperatures (Tb). The measurements are affected by strong radiometric noise. However, during a satellite overpass, numerous measurements are acquired at various incidence angles at the same location on the Earth's surface. The sea surface salinity (SSS) retrieval algorithm implemented in the Level 2 Salinity Prototype Processor (L2SPP) is based on an iterative inversion method that minimizes the differences between Tb measured at different incidence angles and Tb simulated by a full forward model. The iterative method is initialized with a first-guess surface salinity that is iteratively modified until an optimal fit between the... |
| Tipo: Text |
Palavras-chave: Salinity; Oceanography; Microwave radiometry. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-3914.pdf |
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| Schmidtko, Sunke; Johnson, Gregory C.; Lyman, John M.. |
| A monthly, isopycnal/mixed-layer ocean climatology (MIMOC), global from 0 to 1950dbar, is compared with other monthly ocean climatologies. All available quality-controlled profiles of temperature (T) and salinity (S) versus pressure (P) collected by conductivity-temperature-depth (CTD) instruments from the Argo Program, Ice-Tethered Profilers, and archived in the World Ocean Database are used. MIMOC provides maps of mixed layer properties (conservative temperature, , absolute salinity, SA, and maximum P) as well as maps of interior ocean properties (, SA, and P) to 1950dbar on isopycnal surfaces. A third product merges the two onto a pressure grid spanning the upper 1950dbar, adding more familiar potential temperature () and practical salinity (S) maps.... |
| Tipo: Text |
Palavras-chave: Climatology; Global; Temperature; Salinity; Mapping; Objective mapping. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00383/49447/49930.pdf |
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| Sultan, Nabil. |
| In the IODP 372A proposal, working hypotheses used with respect to actively deforming gas hydrate‐bearing landslides were based on an initial calculation considering gas hydrate to occur in fresh water. This initial inaccuracy leads to predict the base of methane hydrate stability zone (MHSZ) to be at around 162 meters below the seafloor (mbsf) at site U1517 while it is expected to be between 85 and 128 mbsf. It is most interesting that important negative chloride anomalies were measured well below the theoretical MHSZ without direct evidence of the presence of gas hydrate. These anomalies are usually a strong indication of gas hydrate occurrence. This initial inaccurate hypothesis provides the opportunity to evaluate the effectiveness of the indirect... |
| Tipo: Text |
Palavras-chave: Hikurangi; Hydrate; IODP; Salinity. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00628/74043/73389.pdf |
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| Ayache, Nour; Hervé, Fabienne; Lundholm, Nina; Amzil, Zouher; Caruana, Amandine. |
| oxic Pseudo‐nitzschia australis strains isolated from French coastal waters were studied to investigate their capacity to adapt to different salinities. Their acclimation to different salinity conditions (10, 20, 30, 35 and 40) was studied on growth, photosynthetic capacity, cell biovolume and domoic acid (DA) content. The strains showed ability to acclimate to a salinity range from 20 to 40, with optimal growth rates between salinities 30 and 40. The highest cell biovolume was observed at the lowest salinity 20 and was associated with the lowest growth rate. Salinity did not affect the photosynthetic activity; Fv/Fm values and the pigment contents remained high with no significant difference among salinities. An enhanced production of zeaxanthin was,... |
| Tipo: Text |
Palavras-chave: Acclimation; Climate change; Domoic acid; Pseudo-nitzschia australis; Physiology; Salinity. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00585/69684/67552.pdf |
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| Hernandez, Olga; Boutin, Jacqueline; Kolodziejczyk, Nicolas; Reverdin, Gilles; Martin, Nicolas; Gaillard, Fabienne; Reul, Nicolas; Vergely, J. L.. |
| Sea surface salinity (SSS) measured from space by the Soil Moisture and Ocean Salinity (SMOS) mission is validated in the subtropical North Atlantic Ocean. 39 transects of ships of opportunity equipped with thermosalinographs (TSG) crossed that region from 2010 to 2012, providing a large database of ground truth SSS. SMOS SSS is also compared to Aquarius SSS. Large seasonal biases remain in SMOS and Aquarius SSS. In order to look at the capability of satellite SSS to monitor spatial variability, especially at scales less than 300 km (not monitored with the Argo network), we first apply a monthly bias correction derived from satellite SSS and In Situ Analysis System (ISAS) SSS differences averaged over the studied region. Ship SSS averaged over 25 km is... |
| Tipo: Text |
Palavras-chave: SMOS; Salinity; Remote sensing; Subtropical North Atlantic. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00210/32150/34082.pdf |
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| Registros recuperados: 374 | |
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