Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Michel Bernat"'
Autor:
Michel Bernat, Christian J. Sanders, Julio Cesar Wasserman, Emmanoel V. Silva-Filho, Silvia M. Sella, Ana Maria Graciano Figueiredo
Publikováno v:
Environmental Earth Sciences. 64:1257-1267
Elemental contents were determined in two mangrove habitats along Sepetiba Bay, SE Brazil, an area impacted by local industrial activities, as well as hinterland water diversion networks. This study demonstrates how specific REEs (La, Ce, Nd, Sm, Eu,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7bdd575ad12d74d18d2bdc9ca9a677f
https://doi.org/10.1007/s12665-011-0942-y
https://doi.org/10.1007/s12665-011-0942-y
Publikováno v:
Hydrological Processes. 17:17-31
Two expeditions (October 1989 and May 1992) were carried out to two points of the main Amazon River channel and four tributaries. The Solimoes and Madeira rivers, taking their origin in the Andes, are whitewater rivers. The Negro River is a typical a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4c8e6c8eeec974a21343297622f940c
https://doi.org/10.1002/hyp.1112
https://doi.org/10.1002/hyp.1112
Publikováno v:
Environmental Geology. 23:241-247
In the last decade, the Atlantic coast of south-eastern Brazil has been affected by increasing deforestation and anthropogenic effluents. Sediments in the coastal lagoons have recorded the process of such environmental change. Thirty-seven sediment s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d29fa8e8d859e5659b7c1a35de868ae
https://doi.org/10.1007/bf00766738
https://doi.org/10.1007/bf00766738
Publikováno v:
Thermochimica Acta. 221:255-262
Resume L'eau incluse est l'un des constituants des coraux fossiles. Nous avons mesure par thermogravimetrie, la part d'eau adsorbee et surtout le pourcentage d'eau incluse qui semble constant pour les coraux qui ne contiennent que de l'aragonite (1,7
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::496be4cc0f3f71cb459c0461a02af016
https://doi.org/10.1016/0040-6031(93)85070-p
https://doi.org/10.1016/0040-6031(93)85070-p
Publikováno v:
Hydrobiologia. 242:69-76
The ammonification rates in surficial sediments of the Marica lagoon (Rio de Janeiro, Brazil) were estimated using two methods: (1) A direct evaluation of the ammonia productivity in sediments by means of an incubation procedure: the ammonia producti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff46cd48014d9c0fa1b3234c63dd803a
https://doi.org/10.1007/bf00018062
https://doi.org/10.1007/bf00018062
Publikováno v:
Pure and Applied Geophysics PAGEOPH. 135:625-638
We report two examples from the south of the French Alps, showing that radon emanation monitored by alpha-sensitive film may be used to locate certain discrete structural features revealed in data collected by remote sensing from a satellite. The var
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9722469b6354a304bfdffdf9ffa4f885
https://doi.org/10.1007/bf01772411
https://doi.org/10.1007/bf01772411
Autor:
Michel Bernat, Max Ganteaume, Christian Zahra, Dominique Lapraz, Jean-Emmanuel Bokilo, Philibert Iacconi, Alain Baumer
Publikováno v:
Thermochimica Acta. 170:121-137
The aragonite fossil corals exhibit an intense natural thermoluminescence between 300°C and 450°C. The transformation of this biogenic aragonite into calcite begins at 260°C and is completed around 450°C. It is accompanied by a rapid loss of wate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af259758bcb4d63d202af1c15428ce1e
https://doi.org/10.1016/0040-6031(90)80530-c
https://doi.org/10.1016/0040-6031(90)80530-c
Publikováno v:
Journal of Volcanology and Geothermal Research. 40:39-53
K-feldspars separated from Plio-Quaternary pumice flows of the Monts-Dore massif (Massif Central, France) give 40 Ar/ 39 Ar saddle-shaped age spectra. Laser-probe analysis of hand-picked single grains gives ages in agreement with those of overlying a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b61ac90de9853936004427614f9ccf97
https://doi.org/10.1016/0377-0273(90)90105-o
https://doi.org/10.1016/0377-0273(90)90105-o
Autor:
Michel Bernat, Claude J. Allègre
Publikováno v:
Earth and Planetary Science Letters. 21:310-314
The mineral separates of a core have been systematically dated by the Io/Th chronology method. The results show that authigenic minerals, though not always completely authigenic, are suitable for dating. We give some evidence against the hypothesis o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfb2a5206852ad4a53ad937fd1ce6a9f
https://doi.org/10.1016/0012-821x(74)90166-6
https://doi.org/10.1016/0012-821x(74)90166-6
Publikováno v:
Journal of Geophysical Research. 79:817-824
A 9-m core was recovered from sediments overlying a salt dome in the western Mediterranean basin (2560 m) and was found to have marked pore water gradients of alkaline-earth metals and sulphate ions, and an unsupported 230Th sedimentation rate of 8 c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c06cd9e596784f83090dd71d1a2e9918
https://doi.org/10.1029/jc079i006p00817
https://doi.org/10.1029/jc079i006p00817