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Found 22 results.

Late Glacial and Holocene lead isotopes and lead concentration data from Füramoos, Southwestern Germany

Lead concentration and stable isotopes were analysed using inductively coupled plasma mass spectrometry (ICP-MS) in samples from an ombrotrophic peat bog at Füramoos (southern Germany).

Major and trace element concentrations and Sr, Nd, Hf, Pb isotope ratios of global mid ocean ridge and ocean island basalts

Iso-2-Drone: UAV-based gas monitoring systems for the underpinning of urban, agricultural and industrial emission roadmaps

Das Projekt "Iso-2-Drone: UAV-based gas monitoring systems for the underpinning of urban, agricultural and industrial emission roadmaps" wird/wurde gefördert durch: Österreichische Forschungsförderungsgesellschaft mbH (FFG). Es wird/wurde ausgeführt durch: Combinnotec GmbH.Gas emission measurements at an ecosystem or site relevant scale, currently require substantial infra-structure investment in terms of flux towers or hiring airplanes for measurements, which renders the methods logistically difficult, inflexible and ultimately rare. Although there are moves towards satellite based technologies for measuring gas concentrations these methods do not provide information on the potential sources, sinks and processes driving the gas emissions that stable isotope based Keeling Plot techniques do. Consequently site specific methods for gas sampling and flux portioning are still required. Given this, hundreds if not thousands of researchers and authorities around the world are seeking new technologies to accurately measure gas emissions easily, from a vast variety of urban, natural and agro ecosystems across the globe. In the last couple of years easy access to unmanned aerial vehicles (UAV) has opened up new opportunities for remote gas sampling. These measurements could all be achieved at any remote site with minimal infrastructure costs, personnel training and possibilities for outsourcing of gas analysis and flux calculations. The ultimate vision of a plug and play Iso-2-Drone coupled with a full service package would open up a much larger potential market and allow local governments, industries and research organizations to secure realistic measurements of their gas fluxes at reasonable costs. With the original FFG Iso-Drone innovation check we at CombInnoTec GmbH and the AIT took this novel state of the art idea of Iso-Drone off the drawing board to create a functional primary prototype, which established the proof of principle that an independently operated gas sampling system could be constructed. With our combined expertise in mechatronics and stable isotope greenhouse gas measurements. We proved that Iso-Drone was fit for purpose in terms of providing appropriate number and volume of gas samples needed for Keeling Plots. With significant CombInnoTec investment and two subsequent small exploratory grants from the UN we further improved the technology and demonstrated that the system was light enough to fit onto an available drone and that it was capable of accurate sampling for isotope analysis and thus calculation of GHG flux measurements specifically carbon dioxide. Now in this project we want to develop these nascent innovations and early prototypes into a commercially packaged, thoroughly tested and easily integrated gas sampling module that could fit onto any UAV's with appropriate payload capability and explore the possibilities of offering a full service package; rendering Iso-2-Drone the go to product for GHG flux measurements. We therefore want to team up with one of the forefront UAV companies in the environmental research sector in the USA, namely M3 Consulting Group, to further develop, test and place our product in a strategic position in the global market.

Chemical and Isotopic Composition of Gas in Salt Beds of a Potash Mine

Stable carbon and oxygen isotopes of modern pollen from nine European tree species collected in 2015 and 2016

Carbon and oxygen stable isotope ratios of modern pollen from abundant European tree species (Abies alba, Acer pseudoplatanus, Alnus glutinosa, Betula pendula, Carpinus betulus, Corylus avellana, Fagus sylvatica, Picea abies, Pinus sylvestris, Quercus robur). The pollen samples were collected in 2015 and 2016 in their respective flowering period in natural habitats. The dataset comprises additional information about the sampling surrounding and environmental factors for each sample.

How vulnerable is Swiss soil organic matter to climate and land use changes?

Das Projekt "How vulnerable is Swiss soil organic matter to climate and land use changes?" wird/wurde gefördert durch: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung. Es wird/wurde ausgeführt durch: Universität Zürich, Geographisches Institut.Soil organic matter is very important for many soil functions. How long carbon remains in the soil is a key factor, but until now this has been little understood. Samuel Abiven and his team would like to raise the understanding of the dynamics of soil carbon. They are particularly concerned with the reaction of the soil organic matter to climate change and to changes in land use. The soil organic matter consists of a mixture of organic molecules that come from plant residues, as well as micro-organisms that decompose these residues in the soil and transform them. The soil organic matter contains a significant amount of the carbon, which, in terms of quantity comes globally to almost three times more than the amount contained in the atmosphere in the form of carbon dioxide and methane. In the soil, the carbon is however turning over much more slowly than in the atmosphere or with plant biomass. Soils can therefore be a sink for carbon, but also serve as a source, if conditions change and decomposition is accelerated. Climate change, for instance, can modify micro-organism activity as well as the structure of the soil organic matter. Changes in land use can change the physico-chemical properties, as well as the kind of litter material that penetrates the soil. The investigations will be coordinated with the research team of Frank Hagedorn (WSL) and Tim Eglinton (ETH Zurich). It is currently difficult to characterise the development of soil organic matter underlying these changes. It depends to a large part on the vulnerability of the organic soil matter to these changes. The project examines the vulnerability of soils, which - just like forest soils - possess a very high level of organic matter and therefore have a higher risk of losing soil matter as a consequence of climate and land use changes. The team, in so doing, is searching for possibilities to ascertain the vulnerability of the soils by examining their properties. It is be possible in this way to identify the most endangered soils and take suitable protective measures.

U-Th-Pb isotope and age determinations on sample Leit6

U-Th-Pb isotope and age determinations on sample Leit8

LA-MC-ICPMS Lu-Hf isotope data of selected concordant zircon grains, run 2

U-Th-Pb isotope and age determinations on sample Strieg5

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