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Article Reference Variability of Suspended Particulate Matter in the Bohai Sea from the Geostationary Ocean Color Imager (GOCI)
This study assesses the performance of the Geostationary Ocean Imager (GOCI) for mapping of suspended particulate matter in the Bohai Sea, a turbid water region. GOCI imagery for remote sensing reflectance and Total Suspended Solids (TSS) is analysed in detail for two days in June 2011 (8 images per day). Both instantaneous and daily composite maps are considered and a comparison is made with corresponding reflectance and TSS products from MODIS-AQUA. Results show TSS distributions corresponding to previous studies of the region. The advantage of the higher acquisition frequency (8 images/day instead of 1) offered by GOCI is clearly demonstrated in the daily composite which is more complete during this period of scattered but moving clouds. Consideration of temporal variation over the day indicates low natural variability but some artificial variability from processing errors - this analysis provides a first indication of how the higher frequency of data from geostationary ocean colour could lead to improved data quality control via temporal coherency outlier detection. While there is room for improvement on the GOCI calibration, atmospheric correction and retrieval algorithms, the current study suggests that the GOCI data can already be used now to study qualitatively sediment dynamics except in the extremely turbid waters which are masked out of the current dataset. In a wider context, it is considered that the technical challenges of geostationary ocean colour have been met by the GOCI concept, and, notwithstanding potential improvements on the concept and data processing methods, it is recommended that this mission serve as a model for future geostationary ocean colour sensors over Europe/Africa and the Americas.
Located in Library / RBINS Staff Publications
Article Reference Variability of the inherent and apparent optical properties in a highly turbid coastal area: impact for the calibration of remote sensing algorithms
Located in Library / RBINS Staff Publications
Article Reference Variation in ostracod (Crustacea, Ostracoda) communities in the alluvial valleyof the upper Parana River (Brazil) in relation to substrate
Located in Library / RBINS Staff Publications
Misc Reference Vertical distribution of termites in a Panamanian rainforest
Located in Library / RBINS Staff Publications
Misc Reference Vertical stratification of termites in a Panamanian rainforest
Located in Library / RBINS Staff Publications
Article Reference Vertical stratification of the termite assemblage in a neotropical rainforest
Located in Library / RBINS Staff Publications
Inproceedings Reference Vestibular sensitivity and locomotor behavior in early paleocene mammals
The end-Cretaceous extinction triggered the collapse of ecosystems and a drastic turnover of mammalian communities. During the Mesozoic, mammals were ecologically diverse, but less than extant species. Modern ecological richness was established by the Eocene, but questions remain about the ecology of the first wave of mammals radiating after the extinction. Postcranial fossils are often used to determine locomotor behavior; however, the semicircular canals of the inner ear also represent a reliable proxy. These canals detect the angular acceleration of the head during locomotion and transmit neuronal signals to the brain to allow stabilization of the eyes and head. Accordingly, vestibular sensitivity to rapid rotational head movements is higher in species with a larger canal radius of curvature and more orthogonal canals. We used high-resolution computed tomography scanning to obtain inner ear virtual endocasts for 30 specimens. We supplemented these with data from the literature to construct a database of 79 fossils from the Jurassic to the Eocene and 262 extant mammals. We compared data on canal morphology and another lifestyle proxy, the size of the petrosal lobules, which have a role in maintaining eyes’ movements and position. We find that Paleocene mammals exhibited a lower average and more constricted range of Agility Indices (AI), a new measure of canal radius size relative to body size, compared to Mesozoic, Eocene and extant taxa. In the early Paleocene, body mass and canal radius increased, but the former outpaced the latter leading to an AI decline. Similarly, their petrosal lobules were relatively smaller on average compared to other temporal groups, which suggests less ability for fast movements. Additionally, Paleocene mammals had similar AIs to extant scansorial and terrestrial quadrupeds. In contrast, the lack of canal orthogonality change from the Mesozoic to the Paleocene indicates no trend toward lower vestibular sensitivity regardless of changes in body size. This result may reflect functional differences between canal orthogonality and radius size. Our results support previous work on tarsal morphology and locomotor behavior ancestral state reconstruction suggesting that ground dwelling mammals were more common than arboreal taxa during the Paleocene. Ultimately, this pattern may indicate that the collapse of forested environments immediately after extinction led to the preferential survivorship of more terrestrially adapted mammals. Funding Sources Marie Sklodowska-Curie Actions: IF, European Research Council StG, National Science Foundation, Belgian Science Policy Office, DMNS No Walls Community Initiative.
Located in Library / RBINS Staff Publications 2022 OA
Article Reference Vingt siècles d’exploitation des argiles plastiques d’Andenne (Belgique) : du gisement au musée de la céramique.
Arranged in strings, the plastic clay deposits from Andenne are fillings of cryptokarsts of white and colored clays associated with three layers of Dinantian Frasnian limestone oriented EW. Sands, brown coal and Tertiary (Neogene) clays have accumulated according to thekarstic dissolution forming a pocket of up to 100m deep. The sulphuric acid stemming from the oxidation of sulphides of brown coals is the main responsible for the formation of kaolinitic clays at the expense of clay minerals and the feldspathic sands. The circulation of water induced the leaching of the iron and their accumulation in certain horizons. White clays rich in alumina and of low iron and alkali content were the most looked for their refractory properties. Exploitedat first on surface then in subterranean galleries, the extraction reached its maximal development around the 19 and 20th centuries to stop definitively in 1970. The clay and the white sand were used in the industries of fire: glassware, crystal, metallurgy... and fed the pottery, brick, tile, earthenware factory, porcelain factories, pipe factory and the industrial refractories. The white clay first and then the final products have been exported since the Middle Ages in Holland, Germany and France, contributing to the international reputation of the clays from Andenne. Depressions generated by the subsidence as a consequence of the underground extractions form a string of pools and ponds, sources of biodiversity. Finally, the Ceramics Museum preserves the traces of this remarkable geological, mining, industrial and artistic with its outstanding collections of pottery, porcelain and pipes. Living museum holder of memory, it provides educational and cultural functions from its exhibitions.
Located in Library / RBINS Staff Publications
Article Reference Viroinval/Treignes : campagne de fouilles 2019 à la grotte Genvier.
Located in Library / RBINS Staff Publications 2020
Inproceedings Reference Virtual biomechanical analysis of the lower limbs of a Neandertal
Located in Library / RBINS Staff Publications