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PANGAEA - Publishing Network for Geoscientific & Environmental Data (843.301 recursos)

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PANGAEA tech-keyword 'citableWithChilds' (56524 data sets)

Mostrando recursos 1 - 20 de 147.251

  1. (Table S4) Glycolipid concentration data from sediment samples across the tropical North Atlantic

    Bale, Nicole Jane; Villareal, Tracy A; Hopmans, Ellen C; Brussaard, Corina P D; Besseling, Marc; Dorhout, Denise J C; Sinninghe Damsté, Jaap S; Schouten, Stefan

  2. (Table S3) Glycolipid concentration data from water column across the tropical North Atlantic

    Bale, Nicole Jane; Villareal, Tracy A; Hopmans, Ellen C; Brussaard, Corina P D; Besseling, Marc; Dorhout, Denise J C; Sinninghe Damsté, Jaap S; Schouten, Stefan

  3. (Table S2) Diazotroph enumeration data across the tropical North Atlantic

    Bale, Nicole Jane; Villareal, Tracy A; Hopmans, Ellen C; Brussaard, Corina P D; Besseling, Marc; Dorhout, Denise J C; Sinninghe Damsté, Jaap S; Schouten, Stefan

  4. (Table S1) Phytoplankton composition across the tropical North Atlantic

    Bale, Nicole Jane; Villareal, Tracy A; Hopmans, Ellen C; Brussaard, Corina P D; Besseling, Marc; Dorhout, Denise J C; Sinninghe Damsté, Jaap S; Schouten, Stefan

  5. C5 glycolipids of heterocystous cyanobacteria track symbiont abundance in the diatom Hemiaulus hauckii across the tropical North Atlantic

    Bale, Nicole Jane; Villareal, Tracy A; Hopmans, Ellen C; Brussaard, Corina P D; Besseling, Marc; Dorhout, Denise J C; Sinninghe Damsté, Jaap S; Schouten, Stefan
    TS2Diatom-diazotroph associations (DDAs) include marine heterocystous cyanobacteria found as exosymbionts and endosymbionts in multiple diatom species. Heterocysts are the site of N2 fixation and have thickened cell walls containing unique heterocyst glycolipids which maintain a low oxygen environment within the heterocyst. The endosymbiotic cyanobacterium Richelia intracellularis found in species of the diatom genus Hemiaulus and Rhizosolenia makes heterocyst glycolipids (HGs) which are composed of C30 and C32 diols and triols with pentose (C5) moieties that are distinct from limnetic cyanobacterial HGs with predominantly hexose (C6) moieties. Here we applied a method for analysis of intact polar lipids to the study...

  6. Heavy mineral analysis and detrital U-Pb ages of detrital zircon

    Deng, Bin; Chew, David; Jiang, Lei; Mark, Chris; Cogn, Nathan; Wang, Zijian; Liu, Shugen

  7. Heavy mineral analysis and detrital U-Pb ages of detrital rutile

    Deng, Bin; Chew, David; Jiang, Lei; Mark, Chris; Cogn, Nathan; Wang, Zijian; Liu, Shugen

  8. Heavy mineral analysis and detrital U-Pb ages of detrital apatite

    Deng, Bin; Chew, David; Jiang, Lei; Mark, Chris; Cogn, Nathan; Wang, Zijian; Liu, Shugen

  9. Organic UV stabilizers and UV filters in the sediment of Chinese Bohai and Yellow Seas in 2016

    Apel, Christina; Tang, Jianhui; Ebinghaus, Ralf
    Organic UV stabilizers and UV filters are applied to industrial materials and cosmetics worldwide. In plastics they prevent photo-induced degradation, while in cosmetics they protect human skin against harmful effects of UV radiation. This study reports on the occurrence and distribution of organic UV stabilizers and UV filters in the surface sediment of the Chinese Bohai and Yellow Seas for the first time. In total, 16 out of 21 analyzed substances were positively detected. Concentrations ranged from sub-ng/g dw to low ng/g dw. The highest concentration of 25 ng/g dw was found for octocrylene (OC) in the Laizhou Bay. In...

  10. Heavy mineral analysis and detrital U-Pb ages of the intracontinental Paleo-Yangzte basin, eastern margin of Tibetan Plateau

    Deng, Bin; Chew, David; Jiang, Lei; Mark, Chris; Cogn, Nathan; Wang, Zijian; Liu, Shugen
    The Paleo-Yangtze basin connected the Sichuan, Xichang and Chuxiong basins during the Late Mesozoic to Early Cenozoic. The Paleo-Yangtze basin subsequently fragmented later in the Cenozoic which makes it challenging to decipher its provenance shifts and the exhumation of the surrounding hinterlands. 47 Heavy mineral analyses combined with detrital (16 apatite, 8 rutile and 8 zircon) U-Pb dating were employed to elucidate the stratigraphic signatures and exhumation patterns along the eastern margin of the Tibetan Plateau during the Upper Cretaceous to Paleogene. Two key horizons have been identified across these basins based on their detrital mineralogy: a garnet-rich horizon within...

  11. 1.5 Ekman model response to the extratropical thermal forcing

    Shin, Yechul; Kang, Sarah
    We examine how the Ekman transport modulates the tropical response to hemispherically differential thermal forcing. The 1.5 layer ocean model is implemented to a gray atmospheric model, with no radiative feedbacks, coupled to an aquaplanet slab ocean. The control climate with no surface flux adjustment is perturbed by southern hemisphere cooling and northern hemisphere warming at the surface. We examine the sensitivity to the forcing amplitude, forcing location, and Ekman flux strength in the control climate. The tropics-to-midlatitude component of Ekman transport, which is a negative feedback that counteracts the prescribed forcing, dominates over the equatorial component, which is a...

  12. Carbon:Chlorophyll ratios of Subarctic Pacific surface waters

    Burt, William J; Westberry, Toby K; Behrenfeld, Michael J; Zeng, Chen; Izett, Robert; Tortell, Philippe Daniel
    We present optically-derived estimates of phytoplankton carbon (Cphyto) and chlorophyll a concentration (Chl) across a wide range of productivity and hydrographic regimes in the Subarctic Pacific Ocean. Our high-frequency measurements capture changes in Cphyto and Chl across regional gradients in macro- and micronutrient limitation, and sub-mesoscale hydrographic frontal zones. Throughout the majority of our survey region, carbon to chlorophyll ratios (Cphyto:Chl) ranged between 50-100. Lower values (10-20) were constrained to the highly productive coastal upwelling system along Vancouver Island, whereas higher estimated values (>200) were found directly off the southern British Columbia continental shelf. Further offshore, Cphyto:Chl was less variable,...

  13. (Table S2) Numbers and carapace widths of Hemigrapsus sanguineus sampled around Helgoland, August 2014

    Jungblut, Simon; Beermann, Jan; Boos, Karin; Saborowski, Reinhard; Hagen, Wilhelm

  14. (Table S2) Numbers and carapace widths of Carcinus maenas sampled around Helgoland, August 2014

    Jungblut, Simon; Beermann, Jan; Boos, Karin; Saborowski, Reinhard; Hagen, Wilhelm

  15. (Table S2) Numbers and carapace widths of Hemigrapsus sanguineus sampled around Helgoland, August 2009

    Jungblut, Simon; Beermann, Jan; Boos, Karin; Saborowski, Reinhard; Hagen, Wilhelm

  16. (Table S2) Numbers and carapace widths of Carcinus maenas sampled around Helgoland, August 2009

    Jungblut, Simon; Beermann, Jan; Boos, Karin; Saborowski, Reinhard; Hagen, Wilhelm

  17. (Table S2) Numbers and carapace widths of C. maenas and H. sanguineus sampled around Helgoland.

    Jungblut, Simon; Beermann, Jan; Boos, Karin; Saborowski, Reinhard; Hagen, Wilhelm
    The Asian shore crab Hemigrapsus sanguineus (De Haan, 1853) has recently established populations in the North Sea and now occurs within the native ranges of the green crab Carcinus maenas (Linnaeus, 1758). To determine potential competitive effects and to assess the progress of the invasion, species-specific population characteristics (numerical abundances, biomasses, and size distributions) of the two species around the island of Helgoland (German Bight, southern North Sea) were compared for surveys conducted in 2009 and 2014. Sampling sites were chosen based on accessibility and differed in their topography and wave exposure, which allowed testing for the influence of these...

  18. Velocity data for two tidewater glacier surges in Svalbard, 2012-2015

    Benn, Douglas I; Luckman, Adrian; Sevestre, Heidi
    A time-series of velocity data spanning recent surges of two tidewater glaciers in Svalbard: Aavatsmarkbreen (Dec 2012-Oct 2015) and Wahlenbergbreen (Sept 2013-Oct 2015). The data were obtained by feature tracking using pairs of TerraSAR-X backscatter intensity images, typically at 11 day intervals. The GeoTiff files are spatially filtered maps of surface speed. Filenames reveal satellite beams (strips) as well as dates and times.

  19. Pollen species of sediment core Latrobe-1

    Frieling, Joost; Huurdeman, Emiel P; Rem, Charlotte C M; Donders, Timme H; Pross, Jörg; Bohaty, Steven M; Holdgate, Guy R; Gallagher, Stephen J; McGowran, Brian; Bijl, Peter K

  20. Dinoflagellate cyst species of sediment core Latrobe-1

    Frieling, Joost; Huurdeman, Emiel P; Rem, Charlotte C M; Donders, Timme H; Pross, Jörg; Bohaty, Steven M; Holdgate, Guy R; Gallagher, Stephen J; McGowran, Brian; Bijl, Peter K

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