GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Document type
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Multi-element geochemical analysis of snow samples: Use of discriminant analysis in interpreting the results (1993)
    Springer
    Environmental monitoring and assessment 27 (1993), S. 159-174 
    Details
    ISSN: 1573-2959
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract This paper records the concentrations of major and trace elements determined from snow samples collected during a comprehensive survey undertaken in the Scottish Highlands during the winter and spring period of 1987. The configuration of calculated back-trajectories allowed the samples to be categorized into one of five geographical sectors. Discriminant analysis was used to check the validity of these calculations, to isolate potentially deviant samples, and to predict the possible source of one sample whose back-trajectory could not be computed with confidence. Limitations of the statistical method are discussed, but we conclude that the technique justifies more use by environmental scientists involved in the evaluation of data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00548363
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    facet.materialart.
    Unknown
    Marine iodine emissions in a changing world (2021)
    Royal Society of London
    In:  Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 477 (2247). Art.Nr. 20200824.
    Details
    Publication Date: 2022-01-07
    Description: Iodine is a critical trace element involved in many diverse and important processes in the Earth system. The importance of iodine for human health has been known for over a century, with low iodine in the diet being linked to goitre, cretinism and neonatal death. Research over the last few decades has shown that iodine has significant impacts on tropospheric photochemistry, ultimately impacting climate by reducing the radiative forcing of ozone (O3) and air quality by reducing extreme O3 concentrations in polluted regions. Iodine is naturally present in the ocean, predominantly as aqueous iodide and iodate. The rapid reaction of sea-surface iodide with O3 is believed to be the largest single source of gaseous iodine to the atmosphere. Due to increased anthropogenic O3, this release of iodine is believed to have increased dramatically over the twentieth century, by as much as a factor of 3. Uncertainties in the marine iodine distribution and global cycle are, however, major constraints in the effective prediction of how the emissions of iodine and its biogeochemical cycle may change in the future or have changed in the past. Here, we present a synthesis of recent results by our team and others which bring a fresh perspective to understanding the global iodine biogeochemical cycle. In particular, we suggest that future climate-induced oceanographic changes could result in a significant change in aqueous iodide concentrations in the surface ocean, with implications for atmospheric air quality and climate.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1098/rspa.2020.0824
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
    facet.materialart.
    Unknown
    Global sea-surface iodide observations, 1967–2018 (2019)
    Nature Research
    In:  Scientific Data, 6 (1). Art.Nr. 286.
    Details
    Publication Date: 2022-01-31
    Description: The marine iodine cycle has significant impacts on air quality and atmospheric chemistry. Specifically, the reaction of iodide with ozone in the top few micrometres of the surface ocean is an important sink for tropospheric ozone (a pollutant gas) and the dominant source of reactive iodine to the atmosphere. Sea surface iodide parameterisations are now being implemented in air quality models, but these are currently a major source of uncertainty. Relatively little observational data is available to estimate the global surface iodide concentrations, and this data has not hitherto been openly available in a collated, digital form. Here we present all available sea surface (〈20 m depth) iodide observations. The dataset includes values digitised from published manuscripts, published and unpublished data supplied directly by the originators, and data obtained from repositories. It contains 1342 data points, and spans latitudes from 70°S to 68°N, representing all major basins. The data may be used to model sea surface iodide concentrations or as a reference for future observations.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1038/s41597-019-0288-y
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 4
    facet.materialart.
    Unknown
    Cd/Ca ratios and element analyses of ODP Hole 115-709C (1990)
    PANGAEA
    In:  Supplement to: Andrews, Julian E; Funnell, Brian M; Jickells, Timothy D; Shackleton, Nicholas J; Swallow, Jane E; Williams, Ann C; Young, Kathryn A (1990): Preliminary assessment of cyclic variations in foraminifers, barite, and cadmium/calcium ratios in Early Pleistocene sediments from Hole 709C (equatorial Indian Ocean). In: Duncan, RA; Backmann, J; Peterson, LC; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 115, 611-619, https://doi.org/10.2973/odp.proc.sr.115.176.1990
    Details
    Publication Date: 2024-01-09
    Description: During three to four d18O cycles (determined on Globigerinoides ruber), more positive d18O (= higher global ice volume) values correlated with higher Globorotalia menardii percentages, total numbers of benthic foraminifers, number of benthic foraminifer species, and the percent of total foraminifers composed of benthic foraminifers. During the same intervals, barite and insoluble residues also generally recorded higher values; however, there was no clear evidence of systematic variation in cadmium/calcium ratios (in benthic foraminifers). Maximum percentages of Globigerinoides sacculifer and Globigerinoides ruber correlate with more negative d18O (= lower global ice volume) values, although they sometimes appear to lead the d18O changes by 〈 =4,000 yr. The increase in percentage of the tropical "divergence" planktonic foraminifer species G. menardii and the reduction of the "nondivergence" tropical species G. ruber and G. sacculifer at times of inferred ice growth is attributed to periodic intensification of divergence associated with the Equatorial Counter Current. Barite and insoluble residue sedi- mentation at the site also generally show a relative increase at those times.
    Keywords: 115-709C; DRILL; Drilling/drill rig; Joides Resolution; Leg115; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 5
    facet.materialart.
    Unknown
    Biogenic opal, carbonate fluxes, time series (1995)
    PANGAEA
    In:  Supplement to: Deuser, Werner G; Jickells, Timothy D; King, P; Commeau, J A (1995): Decadal and annual changes in biogenic opal and carbonate fluxes to the deep Sargasso Sea. Deep Sea Research Part I: Oceanographic Research Papers, 42(11-12), 1923-1932, https://doi.org/10.1016/0967-0637(95)00093-3
    Details
    Publication Date: 2024-02-01
    Description: Analyses of samples from a 14-year series of sediment-trap deployments in the deep Sargasso Sea reveal a significant trend in the ratio of the sinking fluxes of biogenic calcium carbonate and silica. Although there are pronounced seasonal cycles for both flux components, the overall opal/CaCO3 ratio changed by 50% from 1978 to 1991 (largely due to a decrease of opal flux), while total flux had no significant trend. These results suggest that plankton communities respond rapidly to subtle climate change, such as is evident in regional variations of wind speed, precipitation, wintertime ventilation and midwater temperatures. If the trends we observe in the makeup of sinking particulate matter occur on a large scale, they may in turn modify climate by modulating ocean-atmosphere CO2 exchange and albedo over the ocean.
    Keywords: BATS; Calcium carbonate, flux; compiled data; DATE/TIME; DEPTH, water; Duration, number of days; JGOFS; Joint Global Ocean Flux Study; MOOR; Mooring; Opal, flux; Sargasso Sea; see reference(s); Silicon Cycling in the World Ocean; SINOPS; Total mass, flux per day
    Type: Dataset
    Format: text/tab-separated-values, 328 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 6
    facet.materialart.
    Unknown
    (Table 3) Insoluble residue and elemental analyses of ODP Hole 115-709C (1990)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 115-709C; Aluminium; Barium; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Insoluble residue; Iron; Joides Resolution; Leg115; Magnesium; Manganese; Ocean Drilling Program; ODP; Potassium; Sample code/label; South Indian Ridge, South Indian Ocean; Strontium; Titanium; Zinc
    Type: Dataset
    Format: text/tab-separated-values, 406 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 7
    facet.materialart.
    Unknown
    (Table 2) Cd/Ca ratios of Uvigerina hispidocostata of ODP Hole 115-709C (1990)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 115-709C; Cadmium/Calcium ratio; Cadmium/Calcium ratio, standard deviation; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg115; Ocean Drilling Program; ODP; Sample code/label; South Indian Ridge, South Indian Ocean
    Type: Dataset
    Format: text/tab-separated-values, 45 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 8
    facet.materialart.
    Unknown
    Particle fluxes of 28°N22°W_trap (2003)
    PANGAEA
    Details
    Publication Date: 2024-02-06
    Keywords: 28°N22°W; 28°N22°W_trap; Calcium carbonate, flux; Calculated; Carbon, organic, particulate, flux; DEPTH, water; Duration, number of days; Lithogenic, flux; Northeast Atlantic; Opal, flux; Organic matter, particulate, flux; Total mass, flux per day; Trap, sediment; TRAPS
    Type: Dataset
    Format: text/tab-separated-values, 7 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 9
    facet.materialart.
    Unknown
    Particle fluxes of 19°N20°W_trap (2003)
    PANGAEA
    Details
    Publication Date: 2024-02-06
    Keywords: 19°N20°W; 19°N20°W_trap; Calcium carbonate, flux; Calculated; Carbon, organic, particulate, flux; DEPTH, water; Duration, number of days; Lithogenic, flux; Northeast Atlantic; Opal, flux; Organic matter, particulate, flux; Total mass, flux per day; Trap, sediment; TRAPS
    Type: Dataset
    Format: text/tab-separated-values, 7 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 10
    facet.materialart.
    Unknown
    Species flux measured on samples from sediment trap CD53_25#1 (2004)
    PANGAEA
    Details
    Publication Date: 2024-02-01
    Keywords: 25#1; Biogeochemical Ocean Flux Study; BOFS; Calcidiscus leptoporus, flux; CD53; CD53_25#1; Charles Darwin; Coccolith, fluxes; Coscinodiscus lineatus, flux; Coscinodiscus radiatus, flux; DATE/TIME; Date/time end; DEPTH, water; Diatoms, pennales, cell, flux; Duration, number of days; Fecal pellets, flux; Globigerina sp., flux; Helicosphaera carteri, flux; JGOFS; Joint Global Ocean Flux Study; Sample code/label; Silicoflagellate cell, flux; Trap, sediment; TRAPS
    Type: Dataset
    Format: text/tab-separated-values, 312 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...