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132 results for “Continental margin”
Predicted substrate types on the Norwegian continental margin
<p>Output data relating to R workflow for predicting substrate types on the Norwegian continental margin (https://github.com/diesing-ngu/GrainSizeReg). The following files are included:</p><p><strong>GrainSizeReg_folk8_classes_2023-06-28.tif </strong>- Georeferenced Tiff-file of the predicted substrate classes</p><p><strong>GrainSizeReg_folk8_probabilities_2023-06-28.tif </strong>- Georeferenced Tiff-file of the prediction probabilities of the predicted substrate classes</p><p><strong>GrainSizeReg_folk8_max_probabilities_2023-06-28.tif </strong>- Georeferenced Tiff-file of the maximum probabilities, i.e., the probability of the class that was mapped. Can be used as an indicator of map confidence.</p><p><strong>GrainSizeReg_folk8_AOA_2023-06-28.tif </strong>- Georeferenced Tiff-file of the area of applicability of the model <a href="https://doi.org/10.1111/2041-210X.13650">(Meyer & Pebesma, 2021)</a></p><p><strong>GrainSizeReg_folk8_AOA_2023-06-28.shp</strong> - Same as above but as polygon shapefile</p>
Strain partitioning, transfer and implications for ongoing processes of the intra-continental graben formation in the NW margin of the Ordos block, China: insights from densified GNSS measurements
<p><strong><span>GNSS data and processing</span></strong></p> <p><strong><span>1. Intensive observations</span></strong></p> <p><span>In this study, in addition to GNSS data surveyed around the Ordos block provided by <span>Hao et al. (2021)</span>, we collected GNSS data surveyed west of 103°E from </span><span>Phases</span><span> I and II of <span>the Crustal Movement Observation Network of China (CMONOC)</span></span><span>, which</span><span> has conducted measurements every one or two years from 1999 to 2019.</span><span> In particular</span><span>, we also collected data from 70 GNSS sites </span><span>deployed by<span> <a name="OLE_LINK49"></a><a name="OLE_LINK50"></a><a name="OLE_LINK82"></a><span><span>the National Geodetic Control Network of China (NGCNC)</span></span>. These sites were distributed in the northwestern boundary of the Ordos block and the interior of the Alashan and Ejina blocks and </span></span><span>first</span><span> measured 72 hours of data in 2014 or 2015. From September to October 2021, we conducted the second set of measurements for these GNSS sites of 96 continuous hours.</span></p> <p><span> </span></p> <p><strong><span>2. Data processing</span></strong></p> <p><span>T</span><span>he GAMIT </span><span>package </span><span>(</span><span>Herring et al., 2015</span><span>a</span><span>) </span><span>was employed </span><span>to process</span><span> the </span><span>double-differenced carrier phase observations</span><span>, and daily </span><span>loosely constrained solutions</span><span> were obtained</span><span>. </span><span>The primary geophysical models and parameters used in the processing, such as</span><span> the </span><span>FES2004 tidal loading model, GPT2 global pressure and temperature model (</span><span>Lagler et al., 2013</span><span>), and VMF1 </span><span>mapping</span><span> function (</span><span>Boehm et al., 2006</span><span>),</span><span> are</span><span> the</span><span> same </span><span>as </span><span>those in </span><span>Hao et al. (2021)</span><span>. Instead of incorporating global daily solutions provided by the IGS analysis centers, we also processed data from ~</span><span>70 evenly distributed global International Terrestrial Reference Frame (ITRF) core tracking </span><span>GNSS sites</span><span> using the GAMIT package with the same models. </span><span>We estimated</span><span> daily coordinates and uncertainties by constraining the daily regional solutions with global solutions, and the daily free network solutions were transformed into </span><span>the </span><span>ITRF2014 (</span><span>Altamimi et al., 2017</span><span>) </span><span>reference frame by utilizing</span><span> the GLOBK package</span><span> (</span><span>Herring et al., 2015</span><span>b</span><span>)</span><span>.</span><span> For campaign GNSS sites, the weighted least-squares adjustment was used to solve the linear velocity with respect to the ITRF2014.</span></p> <p><span>To analyze the differential crustal motion between blocks, we selected the stable Ordos block as the regional reference frame and transformed the GNSS velocity field referenced to the ITRF2014 into the Ordos-fixed frame through Euler rotation. The absolute Euler pole of the Ordos block is located at 75.083°N ± 0.850°</span><span> and</span><span> 139.692°W ± 3.701°, with an angular rotation rate of 0.352 ± 0.</span><span>006°/Ma </span><span>(</span><span>Hao et al., 2021</span><span>).</span></p> <p><span> </span></p> <p><strong><span>References</span></strong></p> <p><span>Altamimi, Z., Métivier, L, Rebischung, P., Rouby, H., Collilieux, X., 2017. ITRF2014 plate motion model.Geophys. J. Int. 209:1906–1912</span></p> <p><span>Boehm, J., Werl, B., and Schuh, H. (2006). Troposphere mapping functions for GPS and very long baseline interferometry from European Centre for Medium-Range Weather Forecasts operational analysis data. Journal of Geophysical Research, 111, B0240</span><span><a href="https://doi.org/10.1029/2005JB003629"><span>. doi:10.1029/2005JB003629</span></a></span><span>.</span></p> <p><span>Hao, M., Wang, Q., Zhang, P., Li, Z., Li, Y., Zhuang, W., 2021.“Frame wobbling” causing crustal deformation around the Ordos block. Geophysical Research Letters 48, e2020GL091008. https://doi.org/10.1029/2020GL091008.</span></p> <p><span>Herring, T.A., King, R.W., McClusky, S.C., 2015b.GAMIT reference manual, global Kalman filter VLBI and GPS analysis program, Release 10.6.Massachusetts Institute of Technology, Cambridge.</span></p> <p><span>Herring, T.A., King, R.W.,McClusky, S.C., 2015a.GAMIT reference manual, GPS analysis at MIT, Release 10.6.Massachusetts Institute of Technology, Cambridge.</span></p> <p><span>Lagler, K., Schindelegger, M., Böhm, J., Kr</span><span>á</span><span>sn</span><span>á</span><span>, H., and Nilsson, T. (2013). GPT2: empirical slant delay model for radio space geodetic techniques. GeophysicalResearchLetters, 40, 1069-1073. doi: 10.1002/grl.50288.</span></p>
FIGURE 5 in Two new species of deep-sea sponges (Porifera, Demospongiae) from submarine canyons of the Sardinian continental margin (western Mediterranean Sea)
FIGURE 5. Hymedesmia (Hymedesmia) quadridentata n. sp., SEM images of spicules made from the SARD10b (9) [MSNG 57362]: (A) Acanthostyles I and detail of heads; (B) Acanthostyles II; (C) Ectosomal tylotes; (D) Unguiferate chelae; (E) Isochelae; (F) Sigmas I; (G) Sigmas II. Scale bars: A = 50 µm; B = 20 µm; C = 30 µm; D, E, G = 10 µm; F = 20 µm.
FIGURE 4 in Two new species of deep-sea sponges (Porifera, Demospongiae) from submarine canyons of the Sardinian continental margin (western Mediterranean Sea)
FIGURE 4. Hymedesmia (Hymedesmia) quadridentata n. sp., (A) Holotype SARD10b (9) [MSNG 57362]; (B) Skeletal architecture (transverse section). Scale bars: A = 1.5 cm; B = 50 µm
FIGURE 2. Poecillastra tavianii n in Two new species of deep-sea sponges (Porifera, Demospongiae) from submarine canyons of the Sardinian continental margin (western Mediterranean Sea)
FIGURE 2. Poecillastra tavianii n. sp., (A) Holotype SARD10b (12) [MSNG 57361], (B) Paratype MUZAC 6314 (rectangle) (arrows indicate paratypes MUZAC 6315 (named 1) and MUZAC 6316 (named 2) inside the corallites of M. oculata); (D) detail of Paratype [MUZAC 6314] in the M. oculata corallite; (C), skeletal architecture of the holotype (transverse section). Scale bars: A = 1 mm; B = 1 cm; C = 500 µm, D = 1.5 mm.
FIGURE 1 in Two new species of deep-sea sponges (Porifera, Demospongiae) from submarine canyons of the Sardinian continental margin (western Mediterranean Sea)
FIGURE 1. Map of Sardinia coast with collecting localities of Poecillastra tavianii n. sp. (square, Coda Cavallo and Nora Canyons) and Hymedesmia (Hymedesmia) quadridentata n. sp. (circle, Coda Cavallo Canyon).
FIGURE 3. Poecillastra tavianii n in Two new species of deep-sea sponges (Porifera, Demospongiae) from submarine canyons of the Sardinian continental margin (western Mediterranean Sea)
FIGURE 3. Poecillastra tavianii n. sp., SEM images of spicules: (A) Dichotriaenes; (B) Pseudocalthrop; (C) Mesodichotriaenes (paratype MUZAC 6314); (D) Oxeas I; (E) Oxeas II; (F) Acanthomicroxea; Spirasters (G) type I; (H) type II; (I) type III; (J) Plesiasters. Scale bars: A, B, C, D, E = 100 µm; F = 20 µm; G, H, I, J = 5 µm.
Figures in "Gulf Stream mesoscale variabilities drive bottom marine heatwaves in Northwest Atlantic continental margin methane seeps"
<p>Data and code for figures in "Gulf Stream mesoscale variabilities drive bottom marine heatwaves in Northwest Atlantic continental margin methane seeps".</p>
FIGURE 4 in The sand shrimp genus Philocheras (Caridea: Crangonidae) from the continental margin of Western Australia including the description of a new species and a key to Australian species*
FIGURE 4. Carapace (dorsal view) of Philocheras species reported from Australian waters: P. modestus redrawn from De Man (1918: pl. 22 fig. 65); P. obliquus redrawn from Poore (2004: fig. 36i); P. pilosus redrawn from Kemp (1916: pl. 8 fig. 4); P. plebs redrawn from Kemp (1916: pl. 8 fig. 5); P. planoculminus redrawn from Bruce (1994: fig 3a); P. poorei redrawn from Komai (2008: fig 2a); P. triangulus redrawn from Komai (2006: fig 3a); P. victoriensis redrawn from Poore (2004: fig 36c).
FIGURE 1 in The sand shrimp genus Philocheras (Caridea: Crangonidae) from the continental margin of Western Australia including the description of a new species and a key to Australian species*
FIGURE 1. Philocheras anthonyi sp. nov., holotype male, 10.6 mm, WAM C40390, Northwestern Australia: A, entire animal in lateral view (pereopod 3 missing); B, carapace and rostrum, dorsal view; C, pleonal somites 1-3, dorsal view; D, pleonal somites 4-5, dorsal view; E, pleonal somite 6, dorsal view; F, telson and uropods, dorsal view.
FIGURE 2 in The sand shrimp genus Philocheras (Caridea: Crangonidae) from the continental margin of Western Australia including the description of a new species and a key to Australian species*
FIGURE 2. Philocheras anthonyi sp. nov., holotype male, 10.6 mm, WAM C40390, Northwestern Australia: A, subchela of left first pereopod, mesial view; B, subchela of left first pereopod, lateral view; C, left second pereopod, lateral view; D, left third pereopod, lateral view; E, right fourth pereopod, lateral view; F, left fifth pereopod, lateral view; G, left first pleopod (some setae omitted); H, left second pleopod (some setae omitted); I, left third pleopod (some setae omitted).
Datasets: Wedge-shaped southern Indian continental margin without proper weakness hinders subduction initiation
<p>The numerical model results of "Wedge-like southern Indian continental margin without proper weakness hinders subduction initiation".</p>
Nature of Paleo-Pacific subduction along the East Asian continental margin Insights from the sedimentary record of West Sarawak,Borneo
<p>The Table S1, S2, S3, S4 in the manuscript "Nature of Paleo-Pacific subduction along the East Asian continental margin: Insights from the sedimentary record of West Sarawak, Borneo"</p>
Malkowski et al., 2023, Flexural response to erosional unloading of continental margins -- Dataset
<p>Jupyter Notebooks and datasets used in Malkowski, M.A., Steelquist, A.T., Hilley, G.E., 2023, Flexural response to erosional unloading of continental margins: An example from the Bering Sea, USA, Geophysical Research Letters</p>
Power spectral density estimates of underwater wind and rain noise from the northeast Pacific continental margin
<p>Power spectral density (PSD) estimates of of underwater wind and rain noise used in the papers</p> <ul> <li> <p>Schwock, F., & Abadi, S. (2021a). Characterizing underwater noise during rain at the northeast Pacific continental margin. <em>The Journal of the Acoustical Society of America</em>, <em>149</em>(6), 4579–4595. https://doi.org/10.1121/10.0005440</p> </li> <li> <p>Schwock, F., & Abadi, S. (2021b). Statistical analysis and modeling of underwater wind noise at the northeast pacific continental margin. <em>The Journal of the Acoustical Society of America</em>, <em>150</em>(6), 4166–4177. https://doi.org/10.1121/10.0007463</p> </li> </ul> <p>The PSD estimates were computed using raw data from the Ocean Observatories Initiative (https://ooinet.oceanobservatories.org/). The data and documentation can be downloaded here:</p> <p>https://drive.google.com/drive/u/1/folders/19jvgp_86Ou2zW_GugETP29ZwVK2_GmUb</p>
Data from: Biodiversity response to natural gradients of multiple stressors on continental margins
Open the record for dataset details and reuse information.
Data from: The oceanic biological pump: rapid carbon transfer to depth at continental margins during winter
Open the record for dataset details and reuse information.
Data from: A global phylogeny of turtles reveals a burst of climate-associated diversification on continental margins
Open the record for dataset details and reuse information.
Research data for: "Quaternary seismo-stratigraphy and tectono-sedimentary evolution of the north Tunisian continental margin"
<p>The data are the figures in high-resolution for the article: "Quaternary seismo-stratigraphy and tectono-sedimentary evolution of the north Tunisian continental margin".</p>
Fig. 11 in New and known Halichoanolaimus de Man, 1886 species (Nematoda: Selachinematidae) from New Zealand's continental margin
Fig. 11. Halichoanolaimus pumilussp. nov. Light micrographs of holotype ♂ (NIWA 139250). A. Junction of pharynx and intestine, showing position of secretory-excretory gland (seg) and pseudocoelomocyte (pc). B. Mid-body cuticle, showing position of pore complexes (arrows). C. Cuticle near tail region, showing position of pore complexes (arrows). D. Spicular apparatus and precloacal supplements (numbered 1 to 3). Scale bar = 20 µm.
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