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144 Research products, page 1 of 15

  • Digital Humanities and Cultural Heritage
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  • European Marine Science

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  • Other research product . Other ORP type . 2011
    Dutch
    Authors: 
    Veteranen Instituut;
    Publisher: Data Archiving and Networked Services (DANS)

    Deze uit zuidelijk Nederland afkomstige man had geen gelukkige jeugd. Hij kon geen opleiding volgen. Toen defensie ermee adverteerde dat als men zich aanmeldde bij de marine, men 50 verschillende opleidingen kon volgen, sprak hem dat aan en meldde hij zich vrijwillig. Hij vertrok naar Indonesië, waar hij voornamelijk in veldhospitalen werkte en ook op patrouille ging. Thuisgekomen was hij zich bewust van de verdeeldheid in Nederland wat betreft de missie. Hierdoor en vanwege economische redenen koos hij ervoor om naar Australië te emigreren. Hij heeft geen spijt van zijn diensttijd.

  • English
    Authors: 
    (Ifpo), Institut Français du Proche-Orient; du Levant, Armée;
    Publisher: HAL CCSD

    18x24 cm, plaque de verre (cassée)

  • Open Access English
    Authors: 
    Weißbach, Stefanie; Wegner, Anna; Opel, Thomas; Oerter, Hans; Vinther, Bo Møllesøe; Kipfstuhl, Sepp;
    Publisher: PANGAEA - Data Publisher for Earth & Environmental Science

    We present for the first time all 12 d18O records obtained from ice cores drilled in the framework of the North Greenland Traverse (NGT) between 1993 and 1995 in northern Greenland. The cores cover an area of 680 km × 317 km, 10 % of the Greenland ice sheet. Depending on core length (100-175 m) and accumulation rate (90-200 kg/m**2/a) the single records reflect an isotope-temperature history over the last 500-1100 years. Lowest d18O mean values occur north of the summit and east of the main divide as a consequence of Greenland's topography. In general, ice cores drilled on the main ice divide show different results than those drilled east of the main ice divide that might be influenced by secondary regional moisture sources. A stack of all NGT records and the NGRIP record is presented with improved signal-to-noise ratio. Compared to single records, this stack represents the mean d18O signal for northern Greenland that is interpreted as proxy for temperature. Our northern Greenland d18O stack indicates distinctly enriched d18O values during medieval times, about AD 1420 ± 20 and from AD 1870 onwards. The period between AD 1420 and AD 1850 has depleted d18O values compared to the average for the entire millennium and represents the Little Ice Age. The d18O values of the 20th century are comparable to the medieval period but are lower than that about AD 1420.

  • Other research product . Other ORP type . 2011
    Authors: 
    Veteranen Instituut;
    Publisher: Data Archiving and Networked Services (DANS)

    De geïnterviewde vertelt over zijn uitzending naar Voormalig Joegoslavië. De geïnterviewde gaat ook kort in op eerdere uitzendingen en zijn tijd in Aruba. De geïnterviewde was marinier. De geïnterviewde vertelt over de aankomst in Bosnië en beschrijft het gebied en de legering. Naast zijn taken ontfermde de geïnterviewde zich ook over de stroomvoorziening, op het kamp, en later ook bij de lokale bevolking. Tijdens de patrouilles moest men heel alert zijn. De geïnterviewde is zelf niet beschoten, maar hoorde het wel vaak. Later tijdens de missie kwam de lokale bevolking langzaam weer terug. De geïnterviewde vertelt over de sporen van de oorlog die hij tegenkwam. De geïnterviewde gaat in op zijn eigen houding tijdens de missie en de verwerking van de gebeurtenissen. Met de geïnterviewde zijn twee of meer interviews gehouden. Zie relations.

  • Open Access English
    Authors: 
    Holme, Christian T; Gkinis, Vasileios; Lanzky, Mika; Morris, Valerie; Olesen, Martin; Thayer, Abigail; Vaughn, Bruce H; Vinther, Bo Møllesøe;
    Publisher: PANGAEA - Data Publisher for Earth & Environmental Science
    Project: EC | ICE2ICE (610055)

    This study examines the stable water isotope signal (δ18O) of three ice cores drilled on the Renland peninsula (East Greenland coast). While ice core δ18O measurements qualitatively are a measure of the local temperature history, the δ18O variability in precipitation actually reflects the integrated hydrological activity that the deposited ice experienced from the evaporation source to the condensation site. Thus, as Renland is located next to a fluctuating sea ice cover, the transfer function used to infer past temperatures from the δ18O variability is potentially influenced by variations in the local moisture conditions. The objective of this study is therefore to evaluate the δ18O variability of ice cores drilled on Renland and examine what amount of the signal that can be attributed to regional temperature variations. In the analysis, three ice cores are utilized to create stacked summer, winter and annually averaged δ18O signals (AD 1801-2014). The imprint of temperature on δ18O is first examined by correlating the δ18O stacks with instrumental temperature records from East Greenland (AD 1895-2014) and Iceland (AD 1830-2014) and with the regional climate model HIRHAM5 (AD 1980-2014). The results show that the δ18O variability correlates with regional temperatures on both a seasonal and an annual scale between 1910-2014 while δ18O is uncorrelated with Iceland temperatures between 1830-1909. Our analysis indicates that the unstable regional δ18O-temperature correlation does not result from changes in weather patterns through respectively strengthening and weakening of the North Atlantic Oscillation. Instead, the results imply that the varying δ18O-temperature relation is connected with the volume flux of sea ice exported through Fram Strait (and south along the coast of East Greenland). Notably, the δ18O variability only reflects the variations in regional temperature when the temperature anomaly is positive and the sea ice export anomaly is negative. It is hypothesized that this could be caused by a larger sea ice volume flux during cold years which suppresses the Iceland temperature signature in the Renland δ18O signal. However, more isotope-enabled modeling studies with emphasis on coastal ice caps are needed in order to quantify the mechanisms behind this observation. As the amount of Renland δ18O variability that reflects regional temperature varies with time, the results have implications for studies performing regression-based δ18O-temperature reconstructions based on ice cores drilled in the vicinity of a fluctuating sea ice cover.

  • Open Access English
    Authors: 
    Romahn, Sarah; Mackensen, Andreas; Groeneveld, Jeroen; Pätzold, Jürgen;
    Publisher: PANGAEA - Data Publisher for Earth & Environmental Science

    The importance of intermediate water masses in climate change and ocean circulation has been emphasized recently. In particular, Southern Ocean Intermediate Waters (SOIW), such as Antarctic Intermediate Water and Subantarctic Mode Water, are thought to have acted as active interhemispheric transmitter of climate anomalies. Here we reconstruct changes in SOIW signature and spatial and temporal evolution based on a 40 kyr time series of oxygen and carbon isotopes as well as planktic Mg/Ca based thermometry from Site GeoB12615-4 in the western Indian Ocean. Our data suggest that SOIW transmitted Antarctic temperature trends to the equatorial Indian Ocean via the "oceanic tunnel" mechanism. Moreover, our results reveal that deglacial SOIW carried a signature of aged Southern Ocean deep water. We find no evidence of increased formation of intermediate waters during the deglaciation.

  • Open Access English
    Authors: 
    Popoitai, Yasap; Ofosu-Amaah, Waafas;
    Publisher: World Bank, Washington, DC
    Country: United States

    In mining communities, women in particular often bear the negative consequences associated with mismanagement of extractive industries. Women need to be part of the processes and strategies aimed at transforming the negative aspects of the extractive industries into visible social and economic benefits in affected communities. With the permission of senior management of the Ok Tedi mining company, a World Bank consultant was included in the final 5-week long mine life extension (MLE) negotiations as an observer. The purpose was to observe women's roles in the negotiations and, through interviews with the participants, document the women negotiators' aspirations and expectations from the process. The ultimate goal is to provide a forward-looking assessment of the outcomes and draw lessons for analysis and program design not only in the Community Mine Continuation Agreement (CMCA) regions but elsewhere in Papua New Guinea (PNG) resource areas. This report documents the unique and pioneering experience in PNG of women and their roles in negotiating mining operations' benefit streams for local communities. The lessons it draws for development policy-making, planning, and program implementations are relevant both for PNG and for other countries in their attempts to make policy decisions about translating mineral wealth into inclusive and sustainable development for local communities.

  • Open Access English
    Authors: 
    Münch, Thomas; Kipfstuhl, Sepp; Freitag, Johannes; Meyer, Hanno; Laepple, Thomas;
    Publisher: PANGAEA - Data Publisher for Earth & Environmental Science

    In low-accumulation regions, the reliability of d18O-derived temperature signals from ice cores within the Holocene is unclear, primarily due to the small climate changes relative to the intrinsic noise of the isotopic signal. In order to learn about the representativity of single ice cores and to optimise future ice-core-based climate reconstructions, we studied the stable-water isotope composition of firn at Kohnen station, Dronning Maud Land, Antarctica. Analysing d18O in two 50 m long snow trenches allowed us to create an unprecedented, two-dimensional image characterising the isotopic variations from the centimetre to the hundred-metre scale. This data set includes the complete trench oxygen isotope record together with the meta data used in the study. This work was supported by the Initiative and Networking Fund of the Helmholtz Association Grant VG-NH900 and is part of the "Coldest Firn Associated Projects" (CoFiAP).

  • Open Access English
    Authors: 
    Riethdorf, Jan-Rainer; Nürnberg, Dirk; Max, Lars; Tiedemann, Ralf; Gorbarenko, Sergey A; Malakhov, Mikhail I;
    Publisher: PANGAEA - Data Publisher for Earth & Environmental Science

    We used piston cores recovered in the western Bering Sea to reconstruct millennial-scale changes in marine productivity and terrigenous matter supply over the past ~180 kyr. Based on a geochemical multi-proxy approach, our results indicate closely interacting processes controlling marine productivity and terrigenous matter supply comparable to the situation in the Okhotsk Sea. Overall, terrigenous inputs were high, whereas export production was low. Minor increases in marine productivity occurred during intervals of Marine Isotope Stage 5 and interstadials, but pronounced maxima were recorded during interglacials and Termination I. The terrigenous material is suggested to be derived from continental sources on the eastern Bering Sea shelf and to be subsequently transported via sea ice, which is likely to drive changes in surface productivity, terrigenous inputs, and upper-ocean stratification. From our results we propose glacial, deglacial, and interglacial scenarios for environmental change in the Bering Sea. These changes seem to be primarily controlled by insolation and sea-level forcing which affect the strength of atmospheric pressure systems and sea-ice growth. The opening history of the Bering Strait is considered to have had an additional impact. High-resolution core logging data (color b*, XRF scans) strongly correspond to the Dansgaard-Oeschger climate variability registered in the NGRIP ice core and support an atmospheric coupling mechanism of Northern Hemisphere climates.

  • Open Access English
    Authors: 
    Atar, Elizabeth; März, Christian; Aplin, Andrew C; Dellwig, Olaf; Herringshaw, Liam; Lamoureux-Var, Violaine; Leng, Melanie J; Schnetger, Bernhard; Wagner, Thomas;
    Publisher: PANGAEA - Data Publisher for Earth & Environmental Science

    The Ebberston 87 Core, drilled in the Cleveland Basin (Yorkshire, UK), was sampled between the Pectinatus wheatleyensis and Pectinatus pectinatus ammonite zones (Tithonian, Late Jurassic). 116 samples were analysed for total organic carbon, total carbon, major and trace element contents (Si, Ti, Al, Fe, Ca, Mn, As, Co, Cr, Cu, Mo, Ni, V, U, Zn, Zr) and organic carbon isotopes. A subset of 50 samples were analysed for further trace element contents (As, Cd, Co, Cr, Cu, Mo, Ni, Re, Sb, U, V, Zn and Zr), sulphur contents and mercury (Hg) contents.