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1,572 results for “Sedimentation”
In-stream tidal energy resources in macrotidal non-cohesive sediment environments: effect of morphodynamic changes at two bays in the upper Gulf of California
<p>Project_info: This dataset was obtained during the project CeMIE-Oceano (2017-2021), and was party financed by SENER-CONACyT (contract no. 249795).<br> License: The authors appreciate that users of these data: 1) Contact Vanesa Magar (vmagar@cicese.edu.mx) to follow the uses of the data, and 2) Include the requested acknowledgment (cite using the DOI of this dataset) in any presentations or publications.</p> <p>This dataset includes data used for producing Figures 4,5 and Tables 1,2 of paper "IN-STREAM TIDAL ENERGY RESOURCES IN MACROTIDAL NON-COHESIVE SEDIMENT ENVIRONMENTS: EFFECT OF MORPHODYNAMIC CHANGES AT TWO BAYS IN THE UPPER GULF OF CALIFORNIA" published in<br> Journal of Marine Science and Engineering.</p> <p>Bermúdez-Romero, Anahí; Vanesa Magar; Markus S. Gross; Victor M. Godínez; Manuel López-Mariscal; Julio Candela. In-Stream tidal energy resources in macrotidal non-cohesive sediment environment: Effect ofmorphodynamic changes at two bays in the upper Gulf of California. Journal of Marine Science and Enginnering, 9:411. https://doi.org/10.3390/jmse9040411</p>
A simplified palaeoceanography archiving system (PARIS) and GUI for storage and visualisation of marine sediment core proxy data vs age and depth.
<p>Scientific discovery can be aided when data is shared following the principles of findability, accessibility, interoperability, reusability (FAIR) data (Wilkinson et al., 2016). Recent discussions in the palaeoclimate literature have focussed on defining the ideal database format for storing data and associated metadata. Here, we highlight an often overlooked primary process in widespread adoption of FAIR data, namely the systematic creation of machine readable data at source (i.e. at the field and laboratory level). We detail a file naming and structuring method that was used at LSCE to store data in text file format in a way that is machine-readable, and also human-friendly to persons of all levels of computer proficiency, thus encouraging the adoption of a machine-readable ethos at the very start of a project. Thanks to the relative simplicity of downcore palaeoclimate data, we demonstrate the power of this simple but powerful file format to function as a basic database in itself: we provide a Matlab-based GUI tool that allows users to search and visualise data by sediment core location, proxy type and species type. The adoption of similarily accessible, machine-readable file formats at other laboratories will promote data sharing within projects, while also allowing for the automation of submission of data to online database repositories with particular formatting and/or metadata requirements, thus reducing post-hoc workload.</p>
Fig. 4 in Among-Genotype Variation For Sediment Rejection In The Reef-Building Coral Diploastrea Heliopora (Lamarck, 1816)
Fig. 4. Percentage area cleared of sediment over the five-hour duration of the experiment calculated from 12 fragments (four replicates × three treatment) per genotype. Significantly more sediment was cleared under the 'low' sediment load compared to the 'medium' and 'high' loads (Table 2).
Fig. 5 in Among-Genotype Variation For Sediment Rejection In The Reef-Building Coral Diploastrea Heliopora (Lamarck, 1816)
Fig. 5. Percentage of sediment mass cleared after five hours (the duration of the experiment) calculated from 12 fragments (four replicates × three treatment) per genotype.
Fig. 2 in Among-Genotype Variation For Sediment Rejection In The Reef-Building Coral Diploastrea Heliopora (Lamarck, 1816)
Fig. 2. Profiles of natural sediments retrieved from sediment traps positioned at Pulau Hantu (solid line) and the artificial silicon carbide mixture (dotted line).
Text-fig. 6. Distribution of Oligocene continental sediments of Africa, revealing the patchy and incomplete coverage of the occurrences. The Tunisian sedimentary outcrops represent an important resource for the north-western part of the continent. in Arsinoitherium (Embrithopoda) And Other Large Mammals And Plants From The Oligocene Of Tunisia
Text-fig. 6. Distribution of Oligocene continental sediments of Africa, revealing the patchy and incomplete coverage of the occurrences. The Tunisian sedimentary outcrops represent an important resource for the north-western part of the continent.
Text-fig. 1. Geological map of the Staniantsi Coal Basin (redrawn from Angelov et al. 1993): 1 – Pleistocene sediments, 2 – Neogen sediments, 3 – Cretaceous sediments, 4 – Jurassic sediments, 5 – Triassic sediments. in Castor-Like Postcranial Adaptation In An Uppermost Miocene Beaver From The Staniantsi Basin (Nw Bulgaria)
Text-fig. 1. Geological map of the Staniantsi Coal Basin (redrawn from Angelov et al. 1993): 1 – Pleistocene sediments, 2 – Neogen sediments, 3 – Cretaceous sediments, 4 – Jurassic sediments, 5 – Triassic sediments.
FIG. 5 in A Boreal serpulid fauna from Volgian-Ryazanian (latest Jurassic-earliest Cretaceous) shelf sediments and hydrocarbon seeps from Svalbard
FIG. 5. — Ecology of serpulids from latest Jurassic-earliest Cretaceous seep carbonates from Spitsbergen, Svalbard: A, specimen of Propomatoceros sp. attached to exposed carbonate surface (white arrow) (PMO 225.171), seep 3; B, serpulid tube attached to bioclast (black arrow) with surface covered with smaller serpulid tubes (white arrows) (PMO 214.757), seep 9; C, serpulid tube partially filled with dark authigenic micrite; some microborings visible close to the surface (white arrow) are filled with dark authigenic micritie (PMO 214.723),seep 9; D, serpulid tube filled with authigenic botryoidal cement (PMO 171.023B), seep 13. Scale bars:A, B, 2 mm; C, D, 1 mm.
FIG. 3 in A Boreal serpulid fauna from Volgian-Ryazanian (latest Jurassic-earliest Cretaceous) shelf sediments and hydrocarbon seeps from Svalbard
FIG. 3. — Serpulids from background sediments and seep carbonate bodies, Spitsbergen, Svalbard: A-C,?Pyrgopolon decorata (Stolley, 1912): A, two large specimens showing the shape and external ornament of the tube (PMO 217.355A, B), Konusdalen; B, details of the external ornament of?Pyrgopolon decorata (PMO 317.355 A); C, acetate peel of the tube wall of?Pyrgopolon decorata (PMO 217.355 B). D-G,?Pyrgopolon aff. nodulosum (Lundgren, 1883): D, fragment of a tube (PMO 217.357), seep 3; E, acetate peel of the tube wall (PMO 217.357), seep 3; F, mass accumulation of?Pyrgopolon aff. nodulosum (PMO 226.601), Echinoderm bed, Janusfjellet; G, thin section of the tube wall of?Pyrgopolon aff. nodulosum (PMO 214.847), Echinoderm bed, Janusfjellet. Scale bars: A, 5 mm; B, 1 mm; C, E, G, 200 µm; D, 2 mm; F, 15 mm.
FIG. 1 in A Boreal serpulid fauna from Volgian-Ryazanian (latest Jurassic-earliest Cretaceous) shelf sediments and hydrocarbon seeps from Svalbard
FIG. 1. — Map showing the location of study areas (A), geological map of Sassenfjorden (B) and Agardhbukta (C) areas of Spitsbergen, Svalbard with the serpulid-bearing localities in the paper marked;K, locality with?Pyrgopolon decorata in Konusdalen;E, mass accumulation of?Pyrgopolon aff.nodulosum from the Echinoderm bed; M, Myklegardfjellet seep;3, 8, 9, seep numbers.Modified from Dallmann et al.(2001).
FIG. 4 in A Boreal serpulid fauna from Volgian-Ryazanian (latest Jurassic-earliest Cretaceous) shelf sediments and hydrocarbon seeps from Svalbard
FIG. 4. — Serpulids from seep carbonate bodies, Spitsbergen, Svalbard: A-E,?Pyrgopolon sp. A: A, large specimen showing the shape and external surface of the tube (PMO 217.365), seep 8; B, details of the outer surface of?Pyrgopolon sp. A, showing the smooth outer surface (PMO 217.365), seep 8; C, cross-section of the tube showing the thickness relation of inner and outer layers (PMO 217.365), seep 8; D, details of the outer prismatic layer (PMO 217.365), seep 8; E, details of the inner microgranular layer (PMO 217.365), seep 8. F, Propomatoceros sp. A, apertural view (PMO 217.354), seep 3. G, H, Nogrobs aff. quadricarinata Münster in Goldfuss, 1831: G, specimen showing shape and external ornament of the tube (PMO 217.356), Myklegardfjellet seep; H, details of the outer surface showing ornament composed of incomplete rings and concave surface of the tube (PMO 217.356), Myklegardfjellet seep. Scale bars: A, 5 mm; B, C, H, 1 mm; D, 200 µm; E, 100 µm; F, G, 2 mm.
Fig. 2 in Lower Sarmatian Bryozoa from brackish sediment in the northern part of the Danube Basin (Dubová, Slovakia)
Fig. 2: Bryozoa: (1-2) Tubulipora cumulus (Sinzow 1892). Note marked concentric grown lines, apertures arranged in fascicles and porous frontal walls. (3) Hippadenella regularis (Reuss 1874). General view showing wide apertures with characteristic key-shaped suboral avicularium (visible on lower rows of zooecia). (4) Hippopleurifera cf. semicristata (REUSS 1848), fragment of colony with characteristically developed apertures and large pores on frontal wall. (5) Celleporina sp. general view showing small suboral avicularia, lateral areolar pores and ovicells with semicircular windows. (6) Schizoporella tetragona (REUSS 1848). Detail of few zooecia with visible characteristic aperture with wide sinus and large oral avicularia with prominent pivotal bar. All pictures were made in Paleontological Institute of Vienna University in SEM Jeol type JSM-6400 by Dr. K. Zágoršek. Scale bar 100 µm.
Figure 4 in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 4. Ophelina margaleffi sp. nov. A, general view. B, lateral view of anterior region. C, mid-region parapodia showing cirriform branchiae and ciliary bands. D, lateral organ observed in the middle of every parapodial lobe (from left to right dorsoventral orientation). E, hirsute capillary chaetae. F, pygidium with six subequal papillae. Scale bars: A, 1 mm; B, C, 100 Mm; F, 50 Mm; E, 10 Mm; and D, 5 Mm.
Figure 3 in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 3. Paradoneis hirsuta sp. nov. A, general view. B, dorsal view of the branchiate region. C, dorsal view of mid-region parapodia. D, long capillary chaetae of both rami of parapodia. E, lyrate chaeta of posterior parapodia. F, pygidium, with three cirri and ciliated dorsal rounded organ. Scale bars: A, 1 mm; D, 500 Mm; B, 300 Mm; C and F, 100 Mm; and E, 10 Mm.
Figure 2 in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 2. Aricidea (Allia) longisetosa sp. nov. A, general view. B, dorsal view of the anterior region. C, mid-region parapodia with long capillary chaetae. D, fascicle of capillary chaetae and modified neurochaetae in medium parapodia. E, detail of modified posterior-region neurochaeta. F, group of branchiae showing cilia. Scale bars: A, 1 mm; B, C, and F, 200 Mm; D, 20 Mm; and E, 10 Mm.
Figure 7 in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 7. Exogone (Parexogone) canyonincolae sp. nov. A, general view. B, dorsal view of the prostomium and the first chaetigers. C, posterior chaetigers showing smooth natatory chaetae. D, mid-region parapodia showing the simple dorsal chaeta and the compound chaetae: one with a spiniger-like blade, and the rest with shorter blades. E, end of the dorsal simple chaeta. F, compound chaetae of mid-region parapodia. Scale bars: A, B, 50 Mm; C, D, 30 Mm; F, 5 Mm; and E, 3 Mm.
Figure 6. Pelagobia longicirrata. A in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 6. Pelagobia longicirrata. A, prostomium with two pairs of antennae. B, gland formations at the anterior of the prostomium. C, detail of B, showing glands and holes with cilia-like structures. D, lateral view of the nuchal organs, including the first chaetiger, where the simple chaeta position is observed (arrow). E, reticulate field of pits with cilia at the nuchal organ. F, view of reticulate area with the extensible cilia-like structure. Scale bars: A, D, 100 Mm; B, 20 Mm; C, F, 5 Mm; and E, 3 Mm.
Figure 5. Pelagobia longicirrata. A, general view. B in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 5. Pelagobia longicirrata. A, general view. B, lateral view of anterior region. C, uniramous group of parapodia showing long dorsal and ventral cirri, and shorter simple chaeta in the anterior region. D, fascicle of heterogomph chaetae showing unidentate tip in the inset. E, pygidium. F, internal jaw. Scale bars: A, 500 Mm; B, 300 Mm; C, 200 Mm; E, 100 Mm; and D, F, 50 Mm (inset D, 3 Mm).
Figure 1 in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 1. Map of the area studied, showing the location of the mooring line sites (black squares). Site A, Planier submarine canyon (traps 1, 2 and 3-vicinity). Site B, Lacaze-Duthiers submarine canyon (traps 5, 6, and 7-vicinity). Site C, Foix submarine canyon (traps 8-vicinity, 9, and 10).
Dataset for a flume experiment on sediment augmentation
<p>Dataset for the paper "Influence of hydrograph shape and sediment augmentation repetition frequency on sediment transport dynamics and bed morphology evolution". It includes coordinates of the defined areas of interest and digital elevation models from the scanned channel topographies.</p>
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.